2008年北京航空航天大学博士研究生考试(北航考博)英语真题

考博英语（语法）历年真题试卷汇编2(题后含答案及解析)题型有：1. GrammarGrammar1．That grand-sized pine tree______the horizon.(北京大学2005年试题)A．stands up well againstB．stands out good toC．stands out well againstD．stands up good to正确答案：C解析：stand out against sth．的意思是“突出，显眼”，符合题意。

stand up against 的意思是“抵抗，反对，同……对抗”；stand out to sth．无此搭配；stand up to sth．的意思是“经得起磨损”。

本题是说巨大的松树突出地显现在地平线上。

因此C项为正确答案。

2．“The effect of this medicine______by midnight,”the doctor told Emma, “You had better not try to read tonight. “(北京大学2005年试题)A．will wear offB．wears offC．will have worn offD．will be worn off正确答案：B解析：当表示普遍规律时应用一般现在时，因此B项为正确答案。

3．______, the guest speaker was ushered into the auditorium hall to give the lecture.(北京大学2005年试题)A．Being shown around the campusB．Having shown to the campusC．After been shown around the campusD．Having been shown around the campus正确答案：D解析：因为在was ushered into the auditorium hall之前就发生了be shown aroundthe campus这一动作，所以应用完成时的被动语态。

考博士英语试题及答案一、词汇和语法（共20分，每题2分）1. The word "innovate" is most closely related to which of the following?A. CreateB. ImitateC. DuplicateD. Annihilate答案：A2. Which sentence is grammatically correct?A. She has been working here since she graduated.B. She has been working here since she graduated from university.C. She has been working here since she graduated university.D. She has been working here since she was graduated.答案：B3. The correct usage of the word "subsequent" is demonstrated in which sentence?A. The subsequent event was unexpected.B. The subsequent events were unexpected.C. The subsequent event was not expected.D. The subsequent events were not expected.答案：B4. What is the antonym of "abundant"?A. ScarceB. AbundantC. PlentifulD. Ample答案：A5. The phrase "at the mercy of" means:A. To be in a position of power.B. To be controlled by someone or something.C. To show mercy to someone.D. To be in a state of uncertainty.答案：B...二、阅读理解（共30分，每篇阅读5题，每题2分）Passage 1[文章内容略]6. What is the main idea of the passage?A. [选项A]B. [选项B]C. [选项C]D. [选项D]答案：[正确答案]7. According to the passage, which of the following statements is true?A. [选项A]B. [选项B]C. [选项C]D. [选项D]答案：[正确答案]8. The author's attitude towards the subject can be best described as:A. SkepticalB. OptimisticC. NeutralD. Pessimistic答案：[正确答案]9. What does the term "paradigm shift" refer to in the context of the passage?A. [选项A]B. [选项B]C. [选项C]D. [选项D]答案：[正确答案]10. What conclusion can be drawn from the passage?A. [选项A]B. [选项B]C. [选项C]D. [选项D]答案：[正确答案][其他Passage及问题略]三、完形填空（共20分，每题2分）[文章内容略]11. The blank [ ] should be filled with:A. [选项A]B. [选项B]C. [选项C]D. [选项D]答案：[正确答案]12. The word that best completes the sentence is:A. [选项A]B. [选项B]C. [选项C]D. [选项D]答案：[正确答案]...四、翻译（共20分，每题5分）13. Translate the following sentence into English: [中文句子]答案：[英文翻译]14. Translate the following sentence from English to Chinese: [英文句子]答案：[中文翻译]...五、写作（共10分）15. Write an essay of about 300 words on the topic "The Impact of Technology on Education".[写作指导略][学生作文略]注意：以上试题及答案仅为示例，实际考试内容会有所不同。

考博士英语试题及答案一、阅读理解（共40分）1. 阅读下列短文，然后根据短文内容回答问题。

（每题2分，共10分）[短文内容略](1) What is the main idea of the passage?(2) What does the author suggest about the future of technology?(3) Why are some people hesitant to adopt new technologies?(4) What is the role of education in technological advancement?(5) How can individuals contribute to the development of technology?2. 阅读以下文章，然后根据文章内容选择最佳答案。

（每题2分，共10分）[文章内容略](1) A(2) B(3) C(4) D(5) E3. 阅读以下文章，并根据文章内容回答问题。

（每题3分，共20分） [文章内容略](1) What is the primary purpose of the article?(2) How does the author describe the impact of globalization?(3) What are some of the challenges faced by developing countries?(4) What solutions does the author propose to address the issues?(5) What is the author's conclusion regarding the futureof globalization?二、词汇与语法（共30分）1. 根据句子意思，选择正确的词汇填空。

北京航空航天大学博士研究生入学考试英语模拟试题一PART 1 Listening Comprehension (20 points) (略)PART II Reading Comprehension(30 points)Directions:There are four passages in the part. Each passage is followed by some questions or unfinished statements. For each of them, there are 4 choices marked A, B, C and D. Read the passages carefully and decide on the best choice. Then mark the corresponding letter on the ANSWER SHEET with a single line through the center.Passage 1Unless we spend money to spot and prevent asteroids(小行星) now, one might crash into Earth and destroy life as we know it, say some scientists.Asteroids are bigger versions of the meteoroids(流星) that race across the night sky. Most orbit the sun far from Earth and don't threaten us. But there are also thousands whose orbits put them on a collision course with Earth.Buy $ 40 million worth of new telescopes right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we'll have a way to change its course.Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn't be cheap.Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 400, 000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. "If we don't take care of these big asteroids, they'll take care of us," says one scientist. "It's that simple."The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? "The world has less to fear from doomsday (毁灭性的) rocks than from a great nuclear fleet set against them," said a New Y ork Times article.21. What does the passage say about asteroids and meteoroids?A. They are heavenly bodies different in composition.B. They are heavenly bodies similar in nature.C. There are more asteroids than meteoroids.D. Asteroids are more mysterious than meteoroids.22. What do scientists say about the collision of an asteroid with Earth?A. It is very unlikely but the danger exists.B. Such a collision might occur once every 25 years.C. Collisions of smaller asteroids with Earth occur more often than expected.D. It's still too early to say whether such a collision might occur.23. What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?A. It sounds practical but it may not solve the problem.B. It may create more problems than it might solve.C. It is a waste of money because a collision of asteroids with Earth is very unlikely.D. Further research should be done before it is proved applicable.24. We can conclude from the passage that _.A. while pushing asteroids off course nuclear weapons would destroy the worldB. asteroids racing across the night sky are likely to hit Earth in the near futureC. the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetimeD. workable solutions still have to be found to prevent a collision of asteroids with Earth.25. Which of the following best describes the author's tone in this pass age?A. Optimistic.B. Critical.C. Objective.D. Arbitrary.Passage 2Believe it or not,optical illusion (错觉) can cut highway crashes.Japan is a case in point. It has reduced automobile crashes on some roads by nearly 75 percent using a simple optical illusion. Bent stripes, called chevrons (人字形)painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down.Now the American Association Foundation for Traffic Safety in Washington D. C. is planning to repeat Japan's success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes.Excessive speed plays a major role in as much as one fifth of all fatal traffic accidents, according to the foundation. To help reduce those accidents, the foundation will conduct its tests in areas where speed-related hazards are the greatest-curves, exit slopes, traffic circles, and bridges. Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half. However, traffic often returns to full speed within months as drivers become used to seeing the painted bar.Chevrons, scientists say，not only give drivers the impress ion that they are driving faster than they really are but also make a lane appear to be narrower. The result is a longer lasting reduction in highway speed and the number of traffic accidents.26. The passage mainly discusses .A. a new way of highway speed controlB. a new pattern for painting highwaysC. a new approach to training driversD. a new type of optical illusion27. On roads painted with chevrons drivers tend to feel that .A. they should avoid speed-related hazardsB. they are driving in the wrong laneC. they should slow down their speedD. they are approaching the speed limit28. The advantage of chevrons over straight, horizontal bars is that the former .A. can keep drivers awakeB. can cut road accidents in halfC. will have a longer effect on driversD. will look more attractive29. The American Association Foundation for Traffic Safety plans to .A. try out the Japanese method in certain areasB. change the road signs across the countryC. replace straight horizontal bars with chevronsD. repeat the Japanese road patterns30. What does the author say about straight, horizontal bars painted across roads?A. They are falling out of use in the United States.B. They tend to be ignored by drivers in a short period of time.C. They are applicable only on broad roads.D. They cannot be applied successfully to traffic circles.Passage 3There are a number of formats for reporting research, such as articles to appear in journals, reports addressed to funding agencies, theses or dissertations as part of the requirements for university degrees, and papers to be presented at conferences. These formats differ from one another mostly in their purposes and the audiences whom they address. We will now briefly describe them.The journal article is a way of reporting research for professional journals or edited collections. The research is reporting in a brief, yet informative way, focusing mostly on the main features of the research such as the purpose, review of the literature ( often referred to as "background" ), procedures used for carrying out the research accompanied by tables, charts, and graphs, and interpretations of the results ( often referred to as discussion).The content and emphasis of the journal article will vary according to the intended readers (research or practitioners) and it is important for the researcher to be aware of the background and interest of the readers of the journal. Articles intended to be read by practitioners will emphasize the practical implications and recommendations of the research, while articles intended to be read by researchers will describe in detail the method used to collect data, the construction of data collection procedures, and the techniques used for analyzing the data. It is important for the novice researcher to be aware of the fact that articles submitted to journals go through a process of evaluation by experts who make a judgment and recommend whether they should be published or not.The thesis or dissertation is a format for reporting research which graduate students write as part of fulfilling the requirements for an advanced academic degree. The student is expected to describe in great detail all the phases of the research so it can be examined and evaluated carefully by the reader. Thus the thesis or dissertation includes the purpose and significance of the study, the rationale, a thorough review of the literature, detailed information as to the research tools and the procedures involved in their development, a description of data analysis and the results, and an interpretation of the results in the form of conclusions, implications, and recommendation. Thisdetailed description of the process of the research is needed to provide the professors with an indication of the student's ability to carry out research.The conference paper is a way of reporting research at conferences, seminars and colloquia. At such meetings research papers are usually presented orally. They are similar to the research 'article since research is reported in a concise, yet informative way, focusing on the most essential elements of the research. Handouts and transparencies can also accompany the presentations. As with the research article, here too, the content and emphasis of the oral report will depend to a large extent on the type of audience present at the meeting .and whether they are researchers or practitioners.31. The best title for this passage could beA. Types of Research ReportsB. Types of Journal ArticlesC. Writing of research ReportsD. Writing of Different Artic les32. The common aspect for the journal articles, theses and conference papers lies in thatA. they are all for the practitionersB. they are all to be read by researchersC. they are all for being publishedD. they are all forms of reporting research33. We can distinguish those research reports from each other mainly throughA. their writing style and lengthB. their aims and possible audiencesC. their presented places and timeD. their content and purposes34. Which of the following statements is NOT mentioned in this passage?A. Both journal articles and conference papers are reported in a brief and informative way.B. All the theses or dissertations and conference papers are reported in spoken languages.C. Both the journal articles and conference papers are influenced greatly by the intended receivers.D. The various formats of research reports may be presented in different ways.35. How can a professor evaluate a student's capability of implementing the research?A. By concentrating on the main factors like the purpose, background, procedures and discussion.B. By emphasizing the practical implications and recommendations of the research.C. By focusing on the detailed description of the process of the research such as the tools, procedures, the process of data analysis, the results, conclusions, etc.D. By noticing the detailed method used to collect the data, the construction of the data collection procedures, the techniques for analyzing the date and results, etc.Passage 4In recent years, many Americans of both sexes and various ages have become interested in improving their bodies. They have become devoted to physical fitness. The need to exercise has almost become compulsive with many persons who have a strong desire to be more physically fit.By nature, Americans are enthusiastic and energetic about their hobbies and pastimes. They apply this enthusiasm, and energy to jogging/running. As a result, there are running clubs to join andmany books and magazines to read about running.The desire to be physically fit is explained by a "passion" for good health. The high rate of heart attacks in the 1960s caused an increase on the part of the public in improving the human body.Middle-aged men especially suffer from heart attacks. Thus, they are one group strongly interested in more physical exercise. In fact, many doctors encourage their patients to become more physically active, especially those who have sedentary jobs. It is interesting to note that the rate of heart attacks began to decrease in the 1970s and it is still decreasing.Physical fitness currently enjoys a favored role in the United States. It is a new "love" that many Americans have cherished. Will it last long? Only time will tell or until another "new passion" comes along.36. In recent years, many Americans have become interested in improving their bodies becauseA. they are enthusiastic about their hobbies and pastimesB. they have a strong desire to be more physically fitC. there are many running clubs to joinD. there are many books and magazines to read about running37. The passage implies that is a great favorite of many Americans, men and women, old and young.A. jogging/runningB. joining running clubsC. reading books and magazines about runningD. going in for all kinds of sports38. Middle-aged men suffering from heart attacksA. are compulsive joggersB. are encouraged by their doctors to go in for jogging/runningC. are interested in taking more physical exerciseD. are enthusiastic and energetic about hobbies and pastimes39. In the sentence "In fact, many doctors encourage their patients to become more physically active, especially those who have sedentary jobs", the word "sedentary" meansA. involving physical workB. needing much sittingC. energy-consumingD. sleep-producing40. According to the passage, will the love for physical exercise last long for Americans?A. Y es.B. No.C. Somebody can tell.D. It is hard to tell.PART III Vocabulary (10 points)Directions: In this part, there are 20 sentences with four choices below each sentence. Choose the best one from the 4 choices. Then mark the corresponding letter oil the ANSWER SHEET witha single line through the center.41. Not until the game had begun __ at the sports ground.A. should he have arrivedB. had he arrivedC. did he arriveD. would he had arrived42. Neither at this meeting nor at the previous one _ the proposal.A. they did not discussB. did they discussC. do they discussD. would they discuss43. The molecules of gases move more freely than __A. do liquids and solidsB. liquids and solids doC. do those of liquids and solidsD. those do of liquids and solids44. The taller the container, _________ at the bottom.A. the greater will the water pressure beB. the water pressure will be greaterC. the greater will be the water pressureD. greater the water pressure will be45. from the tenth floor when the policeman pointed his pistol at him.A. Jumped down the burglarB. Down the burglar jumpedC. The burglar jumped downD. Down jumped the burglar46. To the north of the city __ a small island.A. lainB. liesC. was thereD. there lays47. she first heard of the man referred to as a specialist.A. That was from StephenB. It was Stephen whomC. It was from Stephen thatD. It was Stephen that48. Was it __ the professor regarded with such contempt?A. them whoB. them whomC. he whoD. those49. __ the Europeans began to learn how to use the compass on their ships.A. It was not until the 12th century whenB. Hardly it was the 12th century thanC. No sooner it was the 12th century whenD. It was not until the 12th century that50. When I try to understand _ _ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.A. why it doesB. what it doesC. what it isD. why it is51. More often it is the President, and not the members of his cabinet, __ the populace.A. who appeal toB. to whom appeal toC. whom appeals toD. who appeals to52. On the large board in the main hall of the airport .you can easily find the different Destinations __which airlines can take you.A. inB. ofC. toD. by53. Not until actually faced with water scarcity __ appreciate the value of water to a region.A. one canB. one can notC. can oneD. can not one54. Most people don't think of a stamp as a receipt, but that is __ it really is a proof of just how much money you have paid in advance for mail delivery.A. whatB. whyC. howD. who55. Without water from the Nile River, Egypt __ a farming country and become a desert.A. will cease to beB. would cease to beC. will cease beingD. would cease being56. Although he refused to act on my suggestion, he had to admit that what I said.A. it was something inB. there was something asC. it was something asD. there was something in57. There is little, __, farming in that area and all you can see is miles of wild countryside.A. if soB. if suchC. if notD. if any58. In his lecture, the education expert emphasized the fact that nowadays children are exposed to many influences that of their families.A. rather thanB. other thanC. except forD. but for59. The singer on the stage has a young __ face and a voice of an __A. boy...angelB. boy's…angelC. boy…ang el'sD. boy's…angel's60. A new material __, we have good reason to be optimistic.A. developedB. being developedC. was being developedD. was developed PART IV Cloze (10 points)Directions: In this part, there are incomplete sentences in the following passage. For each sentence there arefour choices marked A, B, C and D. Choose the one that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center.What attracts customers? Obviously the quality of a product does, but visual images 61a great deal. It is not only the image provided by the packaging that 62 but the whole corporate63 of the company. There are now many products and services on the market which are similar in content 64 produced by different companies. It is vital, therefore, for a company to 65 itself from its competitors by having a strong company image which is immediately 66 Logos are part of this image. They are 67 which often include a name or initials to identify a company. The logo establishes a 68 identity for the company, just as different groups of young people express their identity through hairstyles and clothes. All groups from all cultures and 69 the ages have used colors and symbols to show their identity. In different cultures, different colors 70 different meanings. Some colors may be connected with coldness in one culture and with 71 in another:some colors represent 72 in one culture but death in another. International companies have, 73 , to make sure that their logos will not be misunderstood or misinterpreted in different countries.Many companies have, over the years, 74 their logos to fit in with contemporary design and to present more powerful images. Company logos can be emotive and can 75 loyalty by 76 the instinct. Some logos 77 an idea of the product, and a case in point is the steering wheel in the Mercedes logo. Logos are used on letterheads, packaging and 78 as well as on the product itself. They may also appear in newspapers or on television as part of an advertising 79 .Companies need to have a strong corporate identity. The logo helps to promote this image andto fix it in the minds of the 80 . Logos, therefore, need to be original and to have impact and style.61. A. attribute B. contribute C. devote D. attract62. A. concerns B. involves C. counts D. means63. A. features B. quality C. identity D. status64. A. instead B. and C. though D. as65. A. exist B. isolate C. hold D. distinguish66. A. observable B. differentiable C. recognizable D. accountable67. A. symbols B. signs C. signals D. indications68. A. visible B. visual C. brief D. explicit69. A. in B. throughout C. for D. between70. A. contain B. carry C. predominate D. convey71. A. mildness B. consolation C. affection D. warmth72. A. life B. love C. live D. alive73. A. otherwise B. still C. therefore D. additionally74. A. continued B. kept C. changed D. refreshed75. A. promote B. inspire C. prompt D. stir76. A. regarding B. impressing C. influencing D. effecting77. A. combine B. collaborate C. incorporate D. blend78. A. covers B. brochures C. contents D. volumes79. A. movement B. plan C. campaign D. function80. A. consumers B. employers C. reporters D. manufacturersPART V T ranslation (15 points)Directions:Read the following passage carefully and then translate it into Chinese. Write your translation on the ANSWER SHEET (2).The fact known to us is that war, different from what many people believe it to be, is not completely an outcome of" humanity". Otherwise，war and violence among people would exist in all the human history or ahnost all societies. However, this is not the truth. Archaeologists' investigation results seem to suggest that men lived quite a peaceful life long ago. For example, among ancient French cave drawings which were earlier than 10, 000 B. C., there were no pictures describing people fighting with each other. This indicates that, in that early period of mankind, fight among people was comparatively rare.In a certain way, this discovery is not surprising at all:in the world of animals, it's rare for one to prey on another of its own species. They do kill other kinds of animals, but not their own. Like most animals, the proportion of inner violence among early human beings was relatively small. Therefore, war is not the inherent outcome of humanity but that of certain social and cultural conditions.PART VI Writing(15 points)Directions:A. Study the following graph carefully and write an essay in 200 words.B. Your essay should meet the requirements below.Outline:1. Interpret the graph.2. Suggest counter-measures.3. Give advice for jobseekers.参考答案及解析21．B 依据文章第二段第1行可以判断出两者性质相似只是体积不同，排除A项；文中并无两者数量上的比较，排除C项；也没有涉及D项的内容。

北京航空航天大学2023年博士研究生入学考试英语试题Part ⅠListening Comprehension (20 points)(略)Part ⅡReading Comprehension (30 points)Directions: There are four passages in the part. Each passage is followed by some questions or unfinished statements. For each of them, there are 4 choices marked A, B, C and D．Read the passages carefully and decide on the best choice. Then mark the corresponding letter on the ANSWER SHEET with a single line through the center.Passage 1Scientists now tend to agree that the noise level for potential hearing loss begins at about 70decibels. Some of them are very concerned because normal daily life often exposes people to noise levels of about 70 decibels even inside their homes. Cities have always been noisy, but noise is now spreading to areas that were quiet just a few years ago.Clearly, something must be done or noise will seriously and permanently maim the population. Fortunately, the knowledge and methods to control noise already exist. As a matter of fact, this is one instance where the knowledge of control methods exceeds the knowledge about the effects on human life and on the environment.There are two common means for control. The first is reducing noise at its source, and the second is changing the sound path by distance or by shielding.The second approach is being used more often today as people become more aware of the danger of noise. New building codes require better sound insulation in homes and apartments. More and more towns are passing zoning ordinances that try to segregate noisy factories or airports from residential areas. Sound-absorbent materials and construction designed to block sound paths are slowly coming into use in offices and homes. New highways are being built to redirect traffic noise up and away from nearby areas. Aircraft are increasingly being required touse reduced power flights around airports.There are many examples of available noise control methods that are not being used. More flexible building codes would permit the use of quieter kinds of plumbing pipes. Sound-absorbing materials can reduce the noise of motors and engines. Power generators can be quieted with baffles, exhaust silencers, and sound absorbers. Truck tires can be made with quieter treads. In many cases, the cost of building quieter machines is the same or only slightly higher than that of the current noisy ones. Even though the new equipment may cost more initially, it can prove more profitable in the long run. The new jumbo jets, for example, are quieter than the older ones, yet they are more powerful and carry twice as many passengers.All of these methods are only partial measures as noisy levels continue to rise. Most specialists in the field agree that much of the solution must come from eliminating some of the noise at its source, therefore saving through prevention the large costs of hearing loss.21．The noise level for possible hearing loss begins at about ______.A．30 decibels B．75 decibels C．100 decibels D．none of the above 22．Jet pilots are being advised to land ______.A．on longer runways B．from nearby areas C．after dark D．with reduced power 23．How many practical means for controlling noise does the author present?A．One. B．Two. C．Three. D．Four.24．The reader can assume that airport of the future will ______.A．have runways in a north-south patternB．be located in unpopulated areasC．be required to warn passengers of high noise levelsD．in nearby areas25．Jumbo jets are mentioned as examples of ______.A．efficient transportation with low levels of noiseB．vehicles that cause serious air pollutionC．scientific advances that do more harm than goodD．quieter and older vehiclePassage 2Every time a person eats something he makes a nutritional decision. He accepts or rejects the food available to him at home for meals or snacks. Or he selects food for himself at many places in the community, such as supermarkets, drive-ins, restaurants, and food counters in drugstores. These selections make a difference in how an individual looks, how he feels, and how well he can work and play.When a good assortment of food in appropriate amounts is selected and eaten, the consequences are more likely to be a desirable level of health and enough energy to allow one to be as active as one needs and wants to be. When choices are less than desirable, the consequences are likely to be poor health or limited energy or both.Studies of diets of individuals in the United States show that food selection is a highly individual matter, even among young children. Furthermore, far too many individuals of all ages are making poor choices day after day and are either now living with the consequences or will be in the future.Nutritionists and workers in allied professions have been concerned about helping people learn to select and enjoy a wide variety of food combinations that can add up to a good diet.Most people believe that they are well fed—that the choices they make are good ones. After all, they are not really sick, neither are they hungry. However, their nutrition is usually poor in one respect or another. Milk and milk products, such as cheeses, ice cream or milk, buttermilk, and yogurt, are often slighted. Then people may skip many fruits and vegetables, particularly those that are good sources of vitamins A and C．These include dark green leafy vegetables; deep yellow vegetables; and citrus fruits and vegetables, such as cabbage, tomatoes, and green peppers.Every American has the right to choose to be uniformed about nutrition as well as to be informed.If a person believes that she is well fed, attitudes, habits, and information cannot be forced upon her.There are life situations, however, that tend to cause all individual to want to know how to make the best choices. For example, a young couple is starting a family and must prepare food for young children.26．Food preference in America is ______.A．culturally oriented B．inherited C．individualistic D．according to ages 27．Good amounts of vitamin A can be found in ______.A．celery B．banana C．milk D．cabbage 28．According to the author, nutritionists are concerned with ______.A．improving the vitamin content of processed foodsB．restricting the manufacture of high cholesterol foodsC．informing the public about wholesome foodsD．helping people enjoying uninformed about nutrition29．Some people judge their nutrition by the ______.A．status of their health B．grocery stores where they shopC．amount of protein in their diets D．food they took30．The author advocatesA．requiring high school students to take courses on nutritionB．making information on nutrition available to the publicC．forcing food manufacturers to list ingredients on packagesD．people has the right to choose foodPassage 3Almost since the beginning of mankind, governments have been recording the numbers of their populace. The first known census report took place in 3800 B. C. in Babylonia for the purpose of deciding who should pay taxes. As time went by, governments found other, more creative usesfor knowing their numbers. Egyptian King Ramses Ⅱused the census not only to determine who should pay taxes, but also to figure out how to divide land for farming and to decide who could provide manpower for various government projects. These new ideas came about in the mid-1200s-B. C.William the Conqueror brought the concept of census taking to England in 1085. All landowners were required to name their holdings for the purpose of taxation. By the fifteenth century, Tudor kings found a new twist to the Egyptians' use of the census. They too used the population count as a means of getting ready manpower for important government project' namely, replenishing troops in the ongoing battles in western Europe.A rebellious tide swept over England, however, in the mid-1700s. A bill to authorize a regular census was defeated in Parliament on the grounds that it would give valuable information to England's enemies. But the tide of rebellion soon turned, and in 1800 England established its first regular census.Meanwhile the United States had already had an ongoing census for ten years. It was authorized in the Constitution for the purpose of deciding how many members of Congress would be needed for a fair representation of the American people. The constitutional article also established that the census would be taken in 1790 and every ten years thereafter. And so it has. Since its beginning, the American census has gone through many changes. Today the census provides more than a count of the people who live here. It takes polls on transportation, economic planning, and agriculture. The census also provides data for most government agency statistics, such as the unemployment rate.Counting costs have risen since 1790．The government spent about a penny per person to count post-Revolutionary Americans. Today the census costs $ 250 million—more than a dollar per person. That's a long way since 3800 B．C．.31．The first known census report took place in Babylonia in ______.A．1085 B．1200 B. C．3800 B.C. D．179032．The first census was created for the sole purpose of ______.A．counting available troops B．dividing farmlandC．providing manpower D．taxing the populace33．The American census today costs the government approximately ______.A．$0.01/person B．$0.10/person C．$1.00/person D．$10.00/person 34．Parliament defeated a bill authorizing a regular census because it ______.A．might give valuable news to EnglandB．would give England's enemies cause for rebellionC．would be too expensiveD．might disclose information to England's enemies35．The author implies the American census is ______.A．relatively inexpensive to conductB．important to various government branchesC．an exact count of the citizenryD．fairly expensive before 1790Passage 4It didn't happen overnight. The problem of polluted air has been festering for centuries. Suddenly the problem of air pollution is becoming critical and is erupting right before our eyes. Not only do our eyes burn as they focus through murky air, but when the air clears, we see trees and vegetation dying. We must realize that this destruction can no longer be pinned to some mysterious cause. The one major culprit is air pollution.Today's air pollution is an unfortunate by-product of the growth of civilization. Civilized mall desires goods that require heavy industrialization and mass production. Machines and factories sometimes pollute and taint the air with substances that are dangerous to man and the environment. These substances include radioactive dust, salt spray, herbicide and pesticide aerosols, liquid droplets of acidic matter, gases, and sometimes soil particles. These materials canact alone to irritate objects and forms of life. More dangerously, they join together to act upon the environment. Only lately have we begun recognizing some of their dangerous consequences. Scientists have not yet been able to obtain a complete report on the effects of air pollution on trees. They do know, however, that sulfur dioxide, fluorides, and ozone destroy trees and that individual trees respond differently to the numerous particulate and gaseous pollutants. Sometimes trees growing in a single area under attack by pollutants will show symptoms of injury or will die while their neighbors remain healthy. Scientists believe this difference in response depends on the kind of tree and its genetic makeup. Other factors, such as the tree's stage of growth and nearness to the pollution source, the amount of pollutant, and the length of the pollution attack also play a part. In short, whether or not a tree dies as a result of air pollution depends on a combination of host and environmental factors.For the most part, air pollutants injure trees. To conifers, which have year-round needles, air pollution causes early balding. In this event, trees cannot maintain normal food production levels. Undernourished and weakened, they are open to attack by a host of insects, diseases, and other environmental stresses. Death often follows.Air pollution may also cause hardwoods to lose their leaves. Because their leaves are borne only for a portion of the year and are replaced the following year, air pollution injury to hardwoods may not be so severe.36．The author attributes today's air pollution to ______.A．the growth of civilization B．man's carelessnessC．environmental imbalance D．some mysterious cause37．The resistance of some trees to disease can be traced to ______.A．protective foliage B．thick bark C．genetic makeup D．tainted air38．Air pollution causes the most damage to ______.A．hardwoods B．conifers C．fruit trees D．fluorides39．The author implies that the greatest source of pollution is ______.A．heavy industry B．chemical processing plantsC．urban expansion D．salt spray40．We can conclude that ______.A．air pollution is easier to control than water pollutionB．the problem of polluted air is a problem overnightC．the impact of air pollution has been known for centuriesD．research on the efforts of air pollution is incompletePart ⅢVocabulary (10 points)Directions: In this part, there are 20 sentences with four choices below each sentence. Choose the best one from the 4 choices. Then mark the corresponding letter on the ANSWER SHEET with a single line through the center.41．Hidden hotel costs can be a source of frustration to the frugal traveler.A．careful B．clever C．ignorant D．economical 42．Thick with trees and sparse with homes, this tranquil area 50 miles north of Houston could be a slice of heaven.A．molten B．serene C．isolated D．snobbish 43．Accommodations must be made for students with learning disabilities.A．criminal B．pump C．psychology D．lodgings44．History was being catalogued here, the missed opportunities, blunders, and outright mistakes.A．attempts B．insults C．mistakes D．arguments45．The press mocked his attempts to appeal to young voters.A．ridiculed B．entertained C．ignored D．drew46．The federal court has been putting pressure on the state to adhere to the population caps in the decree.A．encounter B．stick to C．prepare D．anticipate47．Widespread wage reductions were imposed during the recession of 1906～1909 and price inflation thereafter impeded the recovery of real wage levels.A．convoluted B．belied C．encumbered D．stoked 48．Helplessly she blinked up at him, feeling a slow lethargy creep through her whole body. A．provision B．cylinder C．contradiction D．exhaustion49．The attack was meticulously planned and executed.A．negligently B．slovenly C．fussily D．discreetly50．At the same time, medical and social science research began to indicate that retirement itself had detrimental effects.A．damaging B．magnificent C．useful D．relevant51．The batteries can be recharged when they run ______.A．over B．down C．out D．along52．The rioters headed downtown, ______ they attacked city hall.A．since B．as C．whereupon D．yet53．Monday's earthquake ______ windows and woke residents.A．slammed B．prosecuted C．rattled D．pierced 54．Environmentalists ______ that it will not be easy to persuade car drivers to use their vehicles less often.A．deliver B．deserve C．contrast D．concede 55．Lately, the restaurant chain, which______ mainly to blue-collar diners, has been hurt by competition.A．caters B．fabricates C．facilitates D．flees56．The nation ______ the death of its great war leader.A．protruded B．lamented C．rebuked D．racked57．The report ______ poor safety standards for the accident.A．blames B．charges C．complains D．accuses58．The new school building is ______ completion.A．nearly to B．close to C．almost at D．just about at 59．Walking is excellent for working ______ tension.A．out B．away C．down D．off60．Any negative statements and accusations made should be ______ and forthrightly answered, preferably at the level on which they originate.A．promptly B．thoroughly C．punctually D．exactlyPart ⅣCloze (10 points)Directions: In this part, there are incomplete sentences in the following passage. For each sentence there are four choices marked A, B, C and D．Choose the one that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center.It is not long since conditions in the mines were worse than they are now. There are still 61 a few very old women who in their youth have worked 62, with harness round their waists, and a chain 63 passed between their legs, crawling on all 64 and dragging tugs of coal. They used to go on 65 this even when they were pregnant.And 66 now, if coal could not be produced without pregnant women dragging it 67 and fro, I fancy we should let them do it 68 than deprive ourselves of coal. But most of the time, of course, we should 69 to forget that they were doing it. It is the 70 with all types of manual work; it keeps us alive, and we are oblivious of its existence. More than anything 71 perhaps, the miner can stand as the type of manual worker, not only because it is so vitally necessary and 72 so 73 , that we are capable 74 forgetting it as we forget the blood in our veins. In 75 way it is even humiliating to watch coal-miners working. It raises in you a momentary doubt 76 your own status as an “intellectual” and a superior person generally. For it is brought 77 to you, at least while you are watching, that it is only 78 miners sweat their guts out 79 superior persons can 80 superior.61．A．alive B．living C．walking D．breathing 62．A．underground B．above C．below D．late63．A．it B．this C．who D．that64．A．limbs B．fours C．legs D．bodies 65．A．making B．working C．do D．doing66．A．just B．even C．right D．well67．A．from B．for C．to D．at68．A．rather B．more C．would D．less69．A．ask B．prefer C．make D．willing70．A．same B．what C．so D．that71．A．more B．beside C．too D．else72．A．but B．yet C．however D．also 73．A．efficient B．silent C．black D．required74．A．to B．for C．of D．at75．A．the B．its C．a D．that76．A．about B．with C．for D．of77．A．point B．home C．much D．it78．A．for B．why C．because D．how79．A．so B．that C．why D．therefore 80．A．retain B．do C．remain D．makePart ⅤTranslation (15 points)Directions: Read the following passage carefully and then translate it into Chinese. Write your translation on the ANSWER SHEET(2).Two teams of astronomers using the Hubble Space Telescope have overturned several decades of conjecture and theory by ruling out the possibility that small, dim stars make up most of the mass in the universe.Until now, small stars known as faint red dwarfs were considered ideal candidates for the so-called “dark matter” that is believed to account for more than 90 percent of the mass of the universe.All visible celestial objects, such as planets, stars and galaxies, are believed to account for only 10 percent of the mass of the universe. The rest of the “missing mass” is presumably invisible because it does not emit or reflect light, or the light is too feeble to be detected. But dark matter can be indirectly detected due to its gravitational influence on other visible objects.According to Bacall, professor of natural science at the Institute of Advanced Study in Princeton, New Jersey and leader of one of the teams, the nature of dark matter, and its abundance, are among the most important questions in modern cosmology today.The ultimate fate of the universe will be determined by the amount of dark matter present. If there is not enough dark matter to bind the universe together gravitationally, it could continue expanding forever. If there is enough mass to hold the universe together gravitationally, the universe may slow down its expansion, come to a halt and begin to contract and eventually collapse.Part ⅥWriting (15 points)Directions: Write a composition of no less than 200 words on the following topic on the Answer Sheet(2): Opportunity and Success.。

北京航空航天大学考博英语真题2016年(总分：100.00，做题时间：180分钟)Ⅰ Reading Comprehension(总题数：0，分数：0.00)Test One(总题数：5，分数：0.00). Which is safer—staying home, traveling to work on public transport, or working in the office? Surprisingly, each of these carries the same risk, which is very low. However, what about flying compared to working in the chemical industry? Unfortunately, the former is 65 times riskier than the latter! In fact, the accident rate of workers in the chemical industry is less than that of almost any of human activity, and almost as safe as staying at home.The trouble with the chemical industry is that when things go wrong they often cause death to those living nearby. It is this that makes chemical accidents so newsworthy. Fortunately, they are extremely rare. The most famous ones happened at Texas City (1947), Flixborough (1974), Seveso (1976), Pemex (1984) and Bhopal (1984).Some of these are always in the minds of the people even though the loss of life was small. No one died at Seveso, and only 28 workers at Flixborough. The worst accident of all was Bhopal, where up to 3,000 were killed. The Texas City explosion of fertilizer killed 552. The Pemex fire at a storage plant for natural gas in the suburbs of Mexico City took 542 lives, just a month before the unfortunate event at Bhopal.Some experts have discussed these accidents and used each accident to illustrate a particular danger. Thus the Texas City explosion was caused by tons of ammonium nitrate (硝酸铵), which is safe unless stored in great quantity. The Flixborough fireball was the fault of management, which took risks to keep production going during essential repairs. The Seveso accident shows what happens if the local authorities lack knowledge of the danger on their doorstep. When the poisonous gas drifted over the town, local leaders were incapable of taking effective action. The Pemex fire was made worse by an overloaded site in all overcrowded suburb. The fire set off a chain reaction of exploding storage tanks. Yet, by a miracle, the two largest tanks did not explode. Had they caught fire, then 3,000 strong rescue teams and fire fighters would all have died.1. Which of the following statements is true? ______（分数：7.50）A.Working at the office is safer than staying at home.B.Traveling to work on public transport is safer than working at the office.C.Staying at home is safer than working in the chemical industry.D.Working in the chemical industry is safer than traveling by air.Test Two(总题数：5，分数：0.00). Of the thousands of different kinds of animals that exist in the world, man has learned to make friends with an enormous number. Some are pets and offer him companionship; some give him protection, and some do hard work which man cannot do for himself. Dogs, which serve man in all three capacities, are found in various breeds in all countries of the world. The Husky can live in the cold polar regions, and the Saluki is at home in the hottest parts of Central Africa. The inhabitants of certain countries are dependent for their very lives on the camel. In the West Indies the little donkey, strong and sure-footed, carrying heavy loads even in mountainous places, is a familiar sight.Trained and tamed for many generations, domestic animals are not accustomed to roaming in search of food and shelter. They look to their masters to provide for their needs, and as long as these are supplied, they are content to do what their masters require.All domestic animals need proper food. It must be suitable for them, sufficient in quantity, fresh and clean. Some people feed a pet dog or cat on odds and ends of table scraps, and then wonder why the animal seems listless and dull. The quantity of food depends on the size of the animal and the amount of exercise it takes. Overfeeding is as bad as underfeeding. Containers for food and water must be washed regularly if the animal is to maintain good health.Even well-cared-for animals may sometimes fall ill. If this happens, the wise master seeks the best advice he can get. All sorts of medicines and treatments are available for sick animals, and in some countries organizations exist to provide them free or at a cheap price. Useful, friendly, hardworking animals deserve to have some time, money and attention spent on their health.1. What main idea does the author want to convey in the first paragraph?（分数：7.50）A.There exists thousands of species of animals in the world.B.Man came to establish a close relationship with a number of animals.C.In some regions a donkey seems to be a very useful beast.D.An animal will be useless unless domesticated.Test Three(总题数：5，分数：0.00). Trees should only be pruned when there is a good and clear reason for doing so and, fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the center and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce that risk of death as far as possible. It is essential to make the area, which has been pruned, smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hours and then paint it with one of the substances available from garden shops produced especially for this purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.1. Pruning should be done to ______.（分数：7.50）A.make the tree grow tallerB.improve the shape of the treeC.get rid of the small branchesD.make the small branches thickerTest Four(总题数：5，分数：0.00). The human criterion for perfect vision is 20/20 for reading the standard lines on a Snellen eye chart without a hitch. The score is determined by how well you read lines of letters of different sizes from 20 feet away. But being able to read the bottom line on the eye chart does not approximate perfection as far as other species are concerned. Most birds would consider us very visually handicapped. The hawk, for instance, has such sharp eyes that it can spot a dime on the sidewalk while perching on top of the Empire State Building. It can make fine visual distinctions because it is blessed with one million cones per square millimeter in its retina (视网膜). And in water, humans are farsighted, while the kingfisher, swooping down to spear fish, can see well in both the air and water because it is endowed with two foveae (凹窝) areas of the eye, consisting mostly of cones that provide visual distinctions. One fovea permits the bird, while in the air, to scan the water below with one eye at a time. This is called monocular vision. Once it hits the water, the other fovea joins in, allowing the kingfisher to focus both eyes, like binoculars, on its prey at the same time. A frog's vision is distinguished by its ability to perceive things as a constant motion picture. Known as "bug detectors", a highly developed set of cells in a frog's eyes responds mainly to moving objects. So, it is said that a frog sitting in a field of dead bugs wouldn't see them as food and would starve.The bee has a "compound" eye, which is used for navigation. It has 15,000 facets that divide what it sees into a pattern of dots or mosaic. With this kind of vision, the bee sees the sun only as a single dot, a constant point of reference. Thus, the eye is a superb navigational instrument that constantly measures the angle of its line of flight in relation to the sun. A bee's eye also gauges flight speed. And if that is not enough to leave our 20/20 "perfect vision" paling into insignificance, the bee is capable of seeing something we can't—ultraviolet light. Thus, what humans consider to be "perfect vision" is in fact rather limited when we look at other species. However, there is still much to be said for the human eye. Of all the mammals, only humans and some primates can enjoy the pleasures of color vision.1. The Snellen eye chart measures one's eyesight by ______.（分数：7.50）A.the number of lines he readsB.the distance he stands away from the chartC.the speed at which he recognizes the lettersD.several integrative factorsⅡ Vocabulary(总题数：20，分数：0.00)1. The ______ cycle of life and death is a subject of interest to scientists and philosophers alike.（分数：1.00）A.incompatibleB.exceedingC.instantaneousD.eternal2. There is much I enjoy about the changing seasons, but my favorite time is the ______ from fall to winter.（分数：1.00）A.transitionB.transmissionC.transformationD.transfer3. Email is a convenient, highly democratic informal medium for conveying messages that ______ well to human needs.（分数：1.00）A.adheresB.conformsC.satisfiesD.reflects4. Having had her as a professor and adviser, I can tell you that she is an ______ force who pushes her students to excel far beyond their own expectations.（分数：1.00）A.inspirationalcationalC.excessiveD.instantaneous5. Hurricanes are killer winds, and their ______ power lies in the physical damage they can do.（分数：1.00）A.cumulativeB.destructiveC.turbulentD.prevalent6. He is very ______ in his family and never does anything against his wife.（分数：1.00）A.henceB.filledC.enormousD.humble7. Her smile ______ her secret even though she didn't admit the fact.（分数：1.00）A.revealedB.reversedC.reviewedD.responded8. The Japanese scientists have found that scents ______ efficiency and reduce stress among office workers.（分数：1.00）A.enhanceB.amplifyC.magnifyD.foster9. I found it difficult to ______ my career ambitions with the need to bring up my children.（分数：1.00）A.intensifyB.amendC.reconcileD.consolidate10. At present, it is not possible to confirm or to refute the suggestion that there is a causal relationship between the amount of fat we eat and the ______ of heart attacks.（分数：1.00）A.incidenceB.impetusC.ruptureD.emergence11. These varied racial groups have learned to live together in peace and ______, setting an example well worth following.（分数：1.00）A.harmonyB.graceC.rhythmD.relief12. In that country the coins are so ______ that one has to carry great quantities to make a single purchase.（分数：1.00）A.diminishedB.debasedC.degradedD.defaced13. The people for the experiment were chosen completely ______ random.（分数：1.00）A.atB.inC.byD.on14. Please refrain ______ smoking.（分数：1.00）A.fromB.ofC.atD.against15. The political dissidents decided to take ______ abroad.（分数：1.00）A.escapeB.refugeC.lifeD.hiding16. The unpleasant taste of the medicine prescribed by a famous doctor ______ in his mouth for hours.（分数：1.00）A.restedB.waitedC.prolongedD.lingered17. The language barrier made communication difficult, but finally, part of my message ______.（分数：1.00）A.passed awayB.went overC.came upD.got through18. These excursions will give you an even deeper ______ into our language and culture.（分数：1.00）A.inquiryB.investigationC.inputD.insight19. Why should anyone want to read ______ of books by great authors when the real pleasure comes from reading the originals?（分数：1.00）A.digestsB.insightsC.themesD.leaflets20. All the ceremonies at the 2000 Olympic Games had a unique Australian flavor, ______ of their multicultural communities.（分数：1.00）A.noticeableB.indicativeC.conspicuousD.implicitⅢ Cloze(总题数：20，分数：0.00). The front matter of a book consists of the title, subtitle, table of contents, and preface. But the 1 of readers who pay no attention to the signals is larger than you might expect, unless you happen to be one of those who are 2 to admit it. I have this experience again and again 3 students. I have asked them 4 a book was about. I have asked them to tell me, in the most general 5 , what sort of book it was. This, I have 6 , is a good way, almost an indispensable 7 , to begin a discussion.Many students are 8 to answer this first and simplest question about the book. Sometimes theyapologize 8 that they haven't finished reading it yet, and 10 do not know. That's no 11 , I point out. Did you look at the title? Did you study the 12 ? Did you read the preface 13 introduction? No, they did not. The front matter of a book 14 to be like the ticking of a clock, 15 you notice only when it is not there.One reason why titles and prefaces are 16 by so many readers is that they do not think 17 important to clarify the book they are reading. They do not follow this first 18 . If they tried to follow it, they 19 be grateful to the author 20 them.1. （分数：10.00）A.majorityB.amountC.numberD.figureⅣ Translation(总题数：5，分数：0.00).College pays off. Financially, sure, but also in ways that are impossible to measure.1 From the earliest days of our country, we have seen education as the foundation for democracy and citizenship, for social mobility and national prosperity. Higher education opens minds and opens doors. Yet high school students and families are increasingly questioning its value. Is investing in a college or university education still worth it?The short answer is "yes". There is no doubt that college pays off financially. A wide range of statistics shows the economic advantage of a four-year college education. Over a lifetime, students who graduate from college can expect to make about 60% more than those who do not, well over a million dollars more than they would otherwise. Completing college makes an even greater difference to the earning power of young women. A 25-to-34-year-old female with a bachelor's degree can expect to make 70% more than if she had only completed her high school diploma. College graduates also tend to lead more active lives. They vote more often, volunteer more often and are more likely to own a home. They are healthier and less likely to smoke by a margin of 17 percentage points. They and their children are less likely to be obese, and their children are more likely to go to college. 2 Education encourages people to engage as citizens and live healthier and longer lives—powerful reasons for earning a college degree.But what about the benefits of college that are more difficult to measure? They are equally significant and add up to a lot of value over the course of a lifetime.College teaches students the virtue of slowing down. 3 No one denies the value of speed, connectivity and the virtual world in an economy that thrives on all three. But "thinking" is a word that is too often forgotten, trammeled in our rush to communicate faster and left behind as our brains struggle to keep up with our devices. College teaches students to slow down, to convert information to insight and knowing or understanding. 4 It nurtures critical engagement, enlightened skepticism, and an endless desire to self-educate, preparing students for a lifetime of considering information and growing in knowledge and in wisdom.In these ways and in so many others, college helps students see themselves differently, giving them the room and the license to imagine new possibilities. Yes, it opens opportunities reflected in earning and employment statistics. But, perhaps even more valuable, it opens minds and worlds in ways that defy measurement. I often ask students as they are approaching graduation how they are different from when they arrived at college. They say they know more. Sometimes, they say they found a passion they had never imagined—a field, a profession to which they intend to devote their lives. But what is more important, they often tell me, is that they have a new way of approaching the world, through the power of learning, analyzing, changing to adapt to what they have come to understand. 5 The value of higher education is embodied by people who dream bigger and achieve more, who create their own futures and shape their own destinies.（分数：20.00）1. （分数：4.00）__________________________________________________________________________________________2. （分数：4.00）__________________________________________________________________________________________3. （分数：4.00）__________________________________________________________________________________________4. （分数：4.00）__________________________________________________________________________________________5. （分数：4.00）__________________________________________________________________________________________Ⅴ Writing(总题数：1，分数：0.00)1. Directions: Do you think people should buy things made in their own country, even when the price is higher than the same things made somewhere else? Write an essay of no less than 200 words based on this topic. Your essay should be written clearly on Answer Sheet2.（分数：20.00）__________________________________________________________________________________________。

北京航空航天大学2008年硕士研究生入学考试自动控制原理真题北京航空航天大学2008年硕士研究生入学考试试题自动控制原理部分（共90分）一、（本题15分，第（1）小题10分，第（2）小题5分）某控制系统结构图如题一图所示：题一图（1）试确定参数τ，使闭环系统的阻尼比ζ=输入下的调节时间s t （取5%±误差带）、峰值时间pt 及超调量%σ；（2）若输入为正弦信号()sin ,0r t t t =≥，试在本题（1）所确定参数τ的基础上，求系统输出()c t 的稳态分量()ss c t 和误差()()()e t r t c t =-的稳态分量()ss e t 。

二、（本题15分）某单位负反馈系统的开环传递函数如下：232()(1)s G s s Ts +=+试画出参数T 由零变化到正无穷时的闭环系统根轨迹。

三、（本题15分，第（1）小题10分，第（2）小题5分）某系统结构图如题三图所示：题三图其中，10()(1)G s s s =+，1()0.081cs Gs s τ+=+，0τ>（1）确定参数τ，使开环渐近幅频特性曲线的截止频率为5rad /s ；（2）根据本题（1）所确定的τ值计算系统的相稳定裕度γ。

四、（本题15分）某非线性系统如题四图所示：题四图其中，1M =、1h =。

若取c 、c 为相坐标，试画出满足初始条件(0)2c =-、(0)0c= 的相轨迹。

要求确定相轨迹与开关线的前两个交点，并根据相轨迹分析系统运动是收敛还是发散。

五、（本题15分，每小题5分）某系统动态方程如下：110001010110xx u ??=+，[]10y x=（1）判断系统的可控性和可观测性；（2）若系统不可控。

试进行可控性分解；（3）求该系统由输入u 到输出y 的传递函数，并求()()u t t δ=时的单位脉冲响应()y t 。

六、（本题15分，每小题5分）某被控对象的动态方程如下：10121xx u =+，[]01y x=（1）设计状态反馈向量k ，使得经状态反馈u kx r =+后，闭环系统极点在1j -±处，这里r 为参考输入；（2）对该被控对象构造一极点为5-、5-的状态观测器；（3）若采用控制?u kxr =+，其中k 为本题（1）求出的反馈向量、?x 为本题（2）所设计的观测器状态，求由被控对象、状态观测器、反馈?u kxr =+构成的闭环系统的传递函数。

博士生英语试题及答案一、选择题（每题1分，共10分）1. The word "phenomenon" is most closely related to which of the following?A. AppearanceB. EventC. PhenomenonD. Fact2. Which of the following is the correct usage of "affect"?A. The weather will affect tomorrow.B. The weather will be affected by tomorrow.C. The weather will affect tomorrow's plans.D. The weather will be affected to tomorrow's plans. ...10. In the sentence "He is one of the most talented students in the class," the word "talented" refers to:A. GiftedB. EducatedC. SkilledD. Trained答案：1. C2. C...10. A二、填空题（每题2分，共20分）1. The _______ of the new policy has caused a lot of controversy.A. implementationB. introductionC. executionD. application2. Despite his _______, he managed to finish the project on time.A. illnessB. healthC. sicknessD. disease...10. The _______ of the experiment was to determine the effects of different variables.A. purposeB. goalC. aimD. target答案：1. B2. A...10. C三、阅读理解（每篇5分，共20分）阅读以下文章，回答后面的问题。

博士学位英语考试真题及答案题目1：Which of the following statements is true about academic writing?A. It often uses informal language.B. It avoids using citations from other sources.C. It emphasizes clarity and precision.D. It does not require careful planning.答案：C题目2：The main purpose of a research paper is to ____.A. entertain the readerB. persuade the readerC. present new ideas or findingsD. describe personal experiences答案：C题目3：In academic writing, a citation is used to ____.A. add humor to the textB. support an argument with evidenceC. increase the word countD. make the text more creative答案：B题目4：When writing an abstract for a research paper, it is important to ____.A. include detailed experimental proceduresB. provide a summary of the main pointsC. discuss the limitations of the studyD. present personal opinions about the topic答案：B题目5：Plagiarism refers to the act of ____.A. copying someone else's work without proper citationB. using complex vocabulary to impress readersC. avoiding using citations in academic writingD. discussing personal opinions in a research paper答案：A题目6：In academic writing, a thesis statement is a sentence that ____.A. entertains the reader with a jokeB. presents the main argument or purpose of the paperC. provides background information about the topicD. discusses the limitations of previous research答案：B题目7：The passive voice is often used in academic writing to ____.A. sound more informalB. emphasize the actions of the subjectC. avoid mentioning who performed an actionD. make the text more creative答案：C题目8：Effective academic writing should be ____.A. vague and ambiguousB. concise and focusedC. full of unnecessary detailsD. written in a conversational style答案：B请注意，这些题目只是示例，并不代表真实的博士学位英语考试题目。

2008考研英语（一）真题及答案解析Section I Use of EnglishDirections:Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 points)The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is 1 to say it anyway. He is that 2 bird, a scientist who works independently 3 any institution. He helped popularize the idea that some diseases not 4 thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.5 he, however, might tremble at the6 of what he is about to do. Together with another two scientists, he is publishing a paper which not only7 that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in8 are a particular people originated from central Europe. The process is natural selection.This group generally do well in IQ test, 9 12-15 points above the 10 value of 100, and have contributed 11 to the intellectual and cultural life of the West, as the 12 of their elites, including several world-renowned scientists,13 they also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, 14 ave previously been thought unrelated. The former has been 15 social effects, such as a strong tradition of 16 ucation. The latter was seen as a (an) 17 genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately18 is argument is that the unusual history of these people has 19 em to unique evolutionary pressures that have resulted in this 20 ate of affairs.1.[A] selected[B] prepared[C] obliged[D] pleased2.[A] unique[B] particular[C] special[D] rare3.[A] of[B] with[C] in[D] against4.[A] subsequently[B] presently[C] previously[D] lately5.[A] Only[B] So[C] Even[D] Hence6.[A] thought[B] sight[C] cost[D] risk7.[A] advises[B] suggests[C] protests[D] objects8.[A] progress[B] fact[C] need[D] question9.[A] attaining[B] scoring[C] reaching[D] calculating10.[A] normal[B] common[C] mean[D] total11.[A] unconsciously[B] disproportionately[C] indefinitely[D] unaccountably12.[A] missions[B] fortunes[C] interests[D] careers13.[A] affirm[B] witness[C] observe[D] approve14.[A] moreover[B] therefore[C] however[D] meanwhile15.[A] given up[B] got over[C] carried on[D] put down16.[A] assessing[B] supervising[C] administering[D] valuing17.[A] development[B] origin[C] consequence[D] instrument18.[A] linked[B] integrated[C] woven[D] combined19.[A] limited[B] subjected[C] converted[D] directed20.[A] paradoxical[B] incompatible[C] inevitable[D] continuousSection II Reading ComprehensionPart ADirections:Read the following four texts. Answer the questions below each text by choosing A, B, C or D. Mark your answers on ANSWER SHEET 1. (40 points)Text 1While still catching-up to men in some spheres of modern life, women appear to be way ahead in at least one undesirable category. “Women are particularly susceptible to developing depression and anxiety disorders in response to stress compared to men,”according to Dr. Yehuda, chief psychiatrist at New York’s Veteran’s Administration Hospital.Studies of both animals and humans have shown that sex hormones somehow affect the stress response, causing females under stress to produce more of the trigger chemicals than do males under the same conditions. In several of the studies, when stressed-out female rats had their ovaries (the female reproductive organs) removed, their chemical responses became equal to those of the males.Adding to a woman’s increased dose of stress chemicals, are her increased “opportunities”for stress. “It’s not necessarily that women don’t cope as well. It’s just that they have so much more to cope with,”says Dr. Yehuda. “Their capacity for tolerating stress may even be greater than men’s,”she observes, “it’s just that they’re dealing with so many more things that they become worn out from it more visibly and sooner.”Dr. Yehuda notes another difference between the sexes. “I think that the kinds of things that women are exposed to tend to be in more of a chronic or repeated nature. Men go to war and are exposed to combat stress. Men are exposed to more acts of random physical violence. The kinds of interpersonal violence that women are exposed to tend to be in domestic situations, by, unfortunately, parents or other family members, and they tend not to be one-shot deals. The wear-and-tear that comes from these longer relationships can be quite devastating.”Adeline Alvarez married at 18 and gave birth to a son, but was determined to finish college. “I struggled a lot to get the college degree. I was living in so much frustration that that was my escape, to go to school, and get ahead and do better.”Later, her marriage ended and she became a single mother. “It’s the hardest thing to take care of a teenager, have a job, pay the rent, pay the car payment, and pay the debt. I lived from paycheck to paycheck.”Not everyone experiences the kinds of severe chronic stresses Alvarez describes. But most women today are coping with a lot of obligations, with few breaks, and feeling the strain. Alvarez’s experience demonstrates the importance of finding ways to diffuse stress before it threatens your health and your ability to function.21.Which of the following is true according to the first two paragraphs?[A] Women are biologically more vulnerable to stress.[B] Women are still suffering much stress caused by men.[C] Women are more experienced than men in coping with stress.[D] Men and women show different inclinations when faced with stress.22.Dr. Yehuda’s research suggests that women[A] need extra doses of chemicals to handle stress.[B] have limited capacity for tolerating stress.[C] are more capable of avoiding stress.[D] are exposed to more stress.23.According to Paragraph 4, the stress women confront tends to be[A] domestic and temporary.[B] irregular and violent.[C] durable and frequent.[D] trivial and random.24.The sentence “I lived from paycheck to paycheck.”(Line 6, Para. 5) shows that[A] Alvarez cared about nothing but making money.[B] Alvarez’s salary barely covered her household expenses.[C] Alvarez got paychecks from different jobs.[D] Alvarez paid practically everything by check.25.Which of the following would be the best title for the text?[A] Strain of Stress: No Way Out?[B] Responses to Stress: Gender Difference[C] Stress Analysis: What Chemicals Say[D] Gender Inequality: Women Under StressText 2It used to be so straightforward. A team of researchers working together in the laboratory would submit the results of their research to a journal. A journal editor would then remove the authors’names and affiliations from the paper and send it to their peers for review. Depending on the comments received, the editor would accept the paper for publication or decline it. Copyright rested with the journal publisher, and researchers seeking knowledge of the results would have to subscribe to the journal.No longer. The Internet - and pressure from funding agencies, who are questioning why commercial publishers are making money from government-funded research by restricting access to it - is making access to scientific results a reality. The Organization for Economic Co-operation and Development (OECD) has just issued a report describing the far-reaching consequences of this. The report, by John Houghton of Victoria University in Australia and Graham Vickery of the OECD, makes heavy reading for publishers who have, so far, made handsome profits. But it goes further than that. It signals a change in what has, until now, been a key element of scientific endeavor.The value of knowledge and the return on the public investment in research depends, in part, upon wide distribution and ready access. It is big business. In America, the core scientific publishing market is estimated at between $7 billion and $11 billion. The International Association of Scientific, Technical and Medical Publishers says that there are more than 2,000 publishers worldwide specializing in these subjects. They publish more than 1.2 million articles each year in some 16,000 journals.This is now changing. According to the OECD report, some 75% of scholarly journals are now online. Entirely new business models are emerging; three main ones were identified by thereport’s authors. There is the so-called big deal, where institutional subscribers pay for access to a collection of online journal titles through site-licensing agreements. There is open-access publishing, typically supported by asking the author (or his employer) to pay for the paper to be published. Finally, there are open-access archives, where organizations such as universities or international laboratories support institutional repositories. Other models exist that are hybrids of these three, such as delayed open-access, where journals allow only subscribers to read a paper for the first six months, before making it freely available to everyone who wishes to see it. All this could change the traditional form of the peer-review process, at least for the publication of papers.26.In the first paragraph, the author discusses[A] the background information of journal editing.[B] the publication routine of laboratory reports.[C] the relations of authors with journal publishers.[D] the traditional process of journal publication.27.Which of the following is true of the OECD report?[A] It criticizes government-funded research.[B] It introduces an effective means of publication.[C] It upsets profit-making journal publishers.[D] It benefits scientific research considerably.28.According to the text, online publication is significant in that[A] it provides an easier access to scientific results.[B] it brings huge profits to scientific researchers.[C] it emphasizes the crucial role of scientific knowledge.[D] it facilitates public investment in scientific research.29.With the open-access publishing model, the author of a paper is required to[A] cover the cost of its publication.[B] subscribe to the journal publishing it.[C] allow other online journals to use it freely.[D] complete the peer-review before submission.30.Which of the following best summarizes the main idea of the text?[A] The Internet is posing a threat to publishers.[B] A new mode of publication is emerging.[C] Authors welcome the new channel for publication.[D] Publication is rendered easier by online service.Text 3In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association (NBA) listed at over seven feet. If he had played last season, however, he would have been one of 42. The bodies playing major professional sports have changed dramatically over the years, and managers have been more than willing to adjust team uniforms to fit the growing numbers of bigger, longer frames.The trend in sports, though, may be obscuring an unrecognized reality: Americans have generally stopped growing. Though typically about two inches taller now than 140 years ago, today’s people - especially those born to families who have lived in the U.S. for many generations - apparently reached their limit in the early 1960s. And they aren’t likely to get any taller. “In the general population today, at this genetic, environmental level, we’ve pretty much gone as far aswe can go,”says anthropologist William Cameron Chumlea of Wright State University. In the case of NBA players, their increase in height appears to result from the increasingly common practice of recruiting players from all over the world.Growth, which rarely continues beyond the age of 20, demands calories and nutrients - notably, protein - to feed expanding tissues. At the start of the 20th century, under-nutrition and childhood infections got in the way. But as diet and health improved, children and adolescents have, on average, increased in height by about an inch and a half every 20 years, a pattern known as the secular trend in height. Yet according to the Centers for Disease Control and Prevention, average height - 5′9″for men, 5′4″for women - hasn’t really changed since 1960.Genetically speaking, there are advantages to avoiding substantial height. During childbirth, larger babies have more difficulty passing through the birth canal. Moreover, even though humans have been upright for millions of years, our feet and back continue to struggle with bipedal posture and cannot easily withstand repeated strain imposed by oversize limbs. “There are some real constraints that are set by the genetic architecture of the individual organism,”says anthropologist William Leonard of Northwestern University.Genetic maximums can change, but don’t expect this to happen soon. Claire C. Gordon, senior anthropologist at the Army Research Center in Natick, Mass., ensures that 90 percent of the uniforms and workstations fit recruits without alteration. She says that, unlike those for basketball, the length of military uniforms has not changed for some time. And if you need to predict human height in the near future to design a piece of equipment, Gordon says that by and large, “you could use today’s data and feel fairly confident.”31.Wilt Chamberlain is cited as an example to[A] illustrate the change of height of NBA players.[B] show the popularity of NBA players in the U.S..[C] compare different generations of NBA players.[D] assess the achievements of famous NBA players.32.Which of the following plays a key role in body growth according to the text?[A] Genetic modification.[B] Natural environment.[C] Living standards.[D] Daily exercise.33.On which of the following statements would the author most probably agree?[A] Non-Americans add to the average height of the nation.[B] Human height is conditioned by the upright posture.[C] Americans are the tallest on average in the world.[D] Larger babies tend to become taller in adulthood.34.We learn from the last paragraph that in the near future[A] the garment industry will reconsider the uniform size.[B] the design of military uniforms will remain unchanged.[C] genetic testing will be employed in selecting sportsmen.[D] the existing data of human height will still be applicable.35.The text intends to tell us that[A] the change of human height follows a cyclic pattern.[B] human height is becoming even more predictable.[C] Americans have reached their genetic growth limit.[D] the genetic pattern of Americans has altered.Text 4In 1784, five years before he became president of the United States, George Washington, 52, was nearly toothless. So he hired a dentist to transplant nine teeth into his jaw - having extracted them from the mouths of his slaves.That’s a far different image from the cherry-tree-chopping George most people remember from their history books. But recently, many historians have begun to focus on the roles slavery played in the lives of the founding generation. They have been spurred in part by DNA evidence made available in 1998, which almost certainly proved Thomas Jefferson had fathered at least one child with his slave Sally Hemings. And only over the past 30 years have scholars examined history from the bottom up. Works of several historians reveal the moral compromises made by the nation’s early leaders and the fragile nature of the country’s infancy. More significantly, they argue that many of the Founding Fathers knew slavery was wrong - and yet most did little to fight it.More than anything, the historians say, the founders were hampered by the culture of their time. While Washington and Jefferson privately expressed distaste for slavery, they also understood that it was part of the political and economic bedrock of the country they helped to create.For one thing, the South could not afford to part with its slaves. Owning slaves was “like having a large bank account,”says Wiencek, author of An Imperfect God: George Washington, His Slaves, and the Creation of America. The southern states would not have signed the Constitution without protections for the “peculiar institution,”including a clause that counted a slave as three fifths of a man for purposes of congressional representation.And the statesmen’s political lives depended on slavery. The three-fifths formula handed Jefferson his narrow victory in the presidential election of 1800 by inflating the votes of the southern states in the Electoral College. Once in office, Jefferson extended slavery with the Louisiana Purchase in 1803; the new land was carved into 13 states, including three slave states.Still, Jefferson freed Hemings’s children - though not Hemings herself or his approximately 150 other slaves. Washington, who had begun to believe that all men were created equal after observing the bravery of the black soldiers during the Revolutionary War, overcame the strong opposition of his relatives to grant his slaves their freedom in his will. Only a decade earlier, such an act would have required legislative approval in Virginia.36.George Washington’s dental surgery is mentioned to[A] show the primitive medical practice in the past.[B] demonstrate the cruelty of slavery in his days.[C] stress the role of slaves in the U.S. history.[D] reveal some unknown aspect of his life.37.We may infer from the second paragraph that[A] DNA technology has been widely applied to history research.[B] in its early days the U.S. was confronted with delicate situations.[C] historians deliberately made up some stories of Jefferson’s life.[D] political compromises are easily found throughout the U.S. history.38.What do we learn about Thomas Jefferson?[A] His political view changed his attitude towards slavery.[B] His status as a father made him free the child slaves.[C] His attitude towards slavery was complex.[D] His affair with a slave stained his prestige.39.Which of the following is true according to the text?[A] Some Founding Fathers benefit politically from slavery.[B] Slaves in the old days did not have the right to vote.[C] Slave owners usually had large savings accounts.[D] Slavery was regarded as a peculiar institution.40.Washington’s decision to free slaves originated from his[A] moral considerations.[B] military experience.[C] financial conditions.[D] political stand.Part BDirections:In the following article, some sentences have been removed. For Questions 41-45, choose the most suitable one from the list A-G to fit into each of the numbered blanks. There are two extra choices, which do not fit in any of the blanks. Mark your answers on ANSWER SHEET 1. (10 points)The time for sharpening pencils, arranging your desk, and doing almost anything else instead of writing has ended. The first draft will appear on the page only if you stop avoiding the inevitable and sit, stand up, or lie down to write. (41)Be flexible. Your outline should smoothly conduct you from one point to the next, but do not permit it to railroad you. If a relevant and important idea occurs to you now, work it into the draft.(42) Grammar, punctuation, and spelling can wait until you revise. Concentrate on what you are saying. Good writing most often occurs when you are in hot pursuit of an idea rather than in a nervous search for errors.(43) Your pages will be easier to keep track of that way, and, if you have to clip a paragraph to place it elsewhere, you will not lose any writing on the other side.If you are working on a word processor, you can take advantage of its capacity to make additions and deletions as well as move entire paragraphs by making just a few simple keyboard commands. Some software programs can also check spelling and certain grammatical elements in your writing. (44) These printouts are also easier to read than the screen when you work on revisions.Once you have a first draft on paper, you can delete material that is unrelated to your thesis and add material necessary to illustrate your points and make your paper convincing. The student who wrote “The A & P as a State of Mind”wisely dropped a paragraph that questioned whether Sammy displays chauvinistic attitudes toward women. (45)Remember that your initial draft is only that. You should go through the paper many times - and then again - working to substantiate and clarify your ideas. You may even end up with several entire versions of the paper. Rewrite. The sentences within each paragraph should be related to a single topic. Transitions should connect one paragraph to the next so that there are no abrupt or confusing shifts. Awkward or wordy phrasing or unclear sentences and paragraphs should bemercilessly poked and prodded into shape.[A]To make revising easier, leave wide margins and extra space between lines so that you can easily add words, sentences, and corrections. Write on only one side of the paper.[B]After you have clearly and adequately developed the body of your paper, pay particular attention to the introductory and concluding paragraphs. It’s probably best to write the introduction last, after you know precisely what you are introducing. Concluding paragraphs demand equal attention because they leave the reader with a final impression.[C]It’s worth remembering, however, that though a clean copy fresh off a printer may look terrific, it will read only as well as the thinking and writing that have gone into it. Many writers prudently store their data on disks and print their pages each time they finish a draft to avoid losing any material because of power failures or other problems.[D]It makes no difference how you write, just so you do. Now that you have developed a topic into a tentative thesis, you can assemble your notes and begin to flesh out whatever outline you have made.[E]Although this is an interesting issue, it has nothing to do with the thesis, which explains how the setting influences Sammy’s decision to quit his job. Instead of including that paragraph, she added one that described Lengel’s crabbed response to the girls so that she could lead up to the A & P “policy”he enforces.[F]In the final paragraph about the significance of the setting in “A & P,”the student brings together the reasons Sammy quit his job by referring to his refusal to accept Lengel’s store policies.[G]By using the first draft as a means of thinking about what you want to say, you will very likely discover more than your notes originally suggested. Plenty of good writers don’t use outlines at all but discover ordering principles as they write. Do not attempt to compose a perfectly correct draft the first time around.Part CDirections:Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written clearly on ANSWER SHEET 2. (10 points) In his autobiography, Darwin himself speaks of his intellectual powers with extraordinary modesty. He points out that he always experienced much difficulty in expressing himself clearly and concisely, but (46) he believes that this very difficulty may have had the compensating advantage of forcing him to think long and intently about every sentence, and thus enabling him to detect errors in reasoning and in his own observations. He disclaimed the possession of any great quickness of apprehension or wit, such as distinguished Huxley. (47) He asserted, also, that his power to follow a long and purely abstract train of thought was very limited, for which reason he felt certain that he never could have succeeded with mathematics. His memory, too, he described as extensive, but hazy. So poor in one sense was it that he never could remember for more than a few days a single date or a line of poetry. (48) On the other hand, he did not accept as well founded the charge made by some of his critics that, while he was a good observer, he had no power of reasoning. This, he thought, could not be true, because the “Origin of Species”is one long argument from the beginning to the end, and has convinced many able men. No one, he submits, could have written it without possessing some power of reasoning. He was willing to assert that “I have a fair share of invention, and of common sense or judgment, such as everyfairly successful lawyer or doctor must have, but not, I believe, in any higher degree.”(49) He adds humbly that perhaps he was “superior to the common run of men in noticing things which easily escape attention, and in observing them carefully.”Writing in the last year of his life, he expressed the opinion that in two or three respects his mind had changed during the preceding twenty or thirty years. Up to the age of thirty or beyond it poetry of many kinds gave him great pleasure. Formerly, too, pictures had given him considerable, and music very great, delight. In 1881, however, he said: “Now for many years I cannot endure to read a line of poetry. I have also almost lost my taste for pictures or music.”(50) Darwin was convinced that the loss of these tastes was not only a loss of happiness, but might possibly be injurious to the intellect, and more probably to the moral character.Section IIIWritingPart A51.Directions:You have just come back from Canada and found a music CD in your luggage that you forgot to return to Bob, your landlord there. Write him a letter to1) make an apology, and2) suggest a solution.You should write about 100 words on ANSWER SHEET 2.Do not sign your own name at the end of the letter. Use “Li Ming”instead.Do not write the address. (10 points)Part B52.Directions:Write an essay of 160-200 words based on the following drawing. In your essay, you should1) describe the drawing briefly,2) explain its intended meaning, and then3) give your comments.You should write neatly on ANSWER SHEET 2. (20 points)真题详解完型填空1、答案：B解析：本题测试语义逻辑衔接。

考博英语（词汇）历年真题试卷汇编66(题后含答案及解析)题型有：1. Structure and V ocabularyStructure and V ocabulary1．“Gangnam Style”, the______popular song from South Korean recording artist PSY has just become the most watched video on YouTube ever. (北京大学2013年试题)A．sanelyB．insanelyC．rationallyD．insatiably正确答案：B解析：四个选项的意思分别是：sanely心智健全地，稳健地；insanely疯狂地；rationally理性地；insatiably不知足地，贪得无厌地。

句意是：韩国唱片艺人PSY这首疯狂流行的歌曲“江南Style”已经成为YouTube史上观看次数最多的视频。

根据句意可推出正确答案是B选项。

2．The______British theoretical physicist Stephen Hawking once said in an interview that heaven is a fairy story for people afraid of the dark. (北京大学2013年试题)A．imposingB．loftyC．prominentD．eminent正确答案：D解析：四个选项的意思分别是：imposing气势宏伟的，给人深刻印象的；lofty 傲慢的，高超的；prominent卓越的，杰出的，通常指一群人中或一个团体中突出的人；eminent著名的，杰出的。

句意是，英国著名理论物理学家史蒂芬-霍金在采访中曾说道，天堂是那些害怕黑暗的人的童话故事。

根据句意可推出正确答案是D选项。

3．The basic causes are unknown, although certain conditions that may lead to cancer have been______. (北京航空航天大学2013年试题)A．identifiedB．guaranteedC．notifiedD．conveyed正确答案：A解析：本题考查单词词义。

General English Qualifying Test (2008-6)PAPER ONEPART I LISTENING COMPREHENSION (25 minutes, 20 points) Section A (1 point each)1. A. Composition is her favorite course.B. She prefers other courses to composition.C. She enjoys most of the courses.D. She doesn't like any course.2. A. She hasn't read the passage.B. She doesn't understand it either.C. She cannot read it in darkness.D. She suggests that the man read it.3. A. To guard her money.B. Not to go shopping downtownC. To look for a new wallet.D. Not to take the train.4. A. The working hours were too long.B. The job was not well-paid.C. He didn't like working in a companyD. The job was quite difficult.5. A. Steven is satisfied with his experiment.B. Steven couldn't enjoy the parties any moreC. Steven is a pleasure-seeker,D. Steven is worried about his experiments.6. A. To go to a concert with the man.B. To give the mall a lift to the countrysideC. To enjoy the sunshine.D. To have a short trip for pleasure.7. A. Fred keeps annoying other people.B. Fred looks very funny.C. Fred always makes other people laugh.D. Fred is a man of his word.8. A. To obey the established rules.B. To buy a new book for guidance.C. To try a new but safer experiment.D. To learn the methods from practice.9. A. Bob doesn't swim.B. Bob cannot be relied on.C. Bob cannot persist in doing anything.D. Bob won't be free.Section B (1 point each)Mini-talk one10. A. To find effects on the teaching of reading.B. To raise test scores in reading comprehension.C. To increase the teaching time for reading.D. To help all children read at or above grade level.11. A. Teachers.B. Critics.C. Congressmen.D. Federal officials12. A. Green Eggs and Ham.B. To Kill A Mockingbird.C. Of Mice and Men.D. A Child Called ‘It’.Mini-talk Two13. A. A scientistB. A forester.C. A school master.D. A farmer.14. A. He taught students to watch grass grow.B. He taught students how to manage forest.C. He got parents involved in their children's workD. He developed games about science.15. A. He wrote his own textbooks.B. He made students interested in their studies.C. He helped the students increase their scores.D. He made school activities creative.PART II VOCABULARY (10 minutes, 10 points )Section A (0.5 point each)21. Some scientists are trying to eliminate malaria by developing a GM mosquito that can't transmit thedisease.A. removeB. fabricateC. enhanceD. utilize22. A tall building is usually equipped with several elevators, so it doesn't matter if one of them is out oforder.A. in a messB. in bad conditionC. in short supplyD. in a hurry23. As the train service had been suspended, thousands of people had to wait for days at the station.A. elevated slightlyB. cancelled completelyC. delayed frequentlyD. stopped temporarily24. We can learn about the hazards of hunting big game in stories about their ancestors.A. adventuresB. pleasuresC. dangersD. consequences25. Novel drugs developed through biotechnologies can be expected to deliver a better effect.A. distributeB. produceC. liberateD. express26. The price of housing varies with demand, and the same rule seems to hold for automobiles.A. containB. fastenC. graspD. apply27. Some people are skeptical about the validity of Aristotle's argument that man is by nature a politicalanimal.A. efficiencyB. soundnessC. availabilityD. contribution28. Heart-broken and desperate, she was determined to leave this family for good.A. permanentlyB. alternativelyC. temporarilyD. desirably29. It is generally believed that money can always bring happiness, but studies and surveys have provedthat this is a myth.A. fairy taleB. absolute mythC. mistaken ideaD. big controversy30. The sight of these soldiers toiling along the expressway was extremely touching to a tender heart.A. sympatheticB. mildC. concernedD. feebleSection B (0.5 point each)31. Students of English are advised to try to ___________the meaning of a new word from the context.A. turn outB. figure outC. look outD. put out32. The drastic changes that have taken place in China have won worldwide __________.A. identificationB. realizationC. admissionD. recognition33. Bill Clinton rose to prominence after he was elected ________ of Arkansas at age 32 in 1978.A. presidentB. secretaryC. governorD. premier34. The finding of this experiment is __________ with what was previously reported.A. consistentB. constantC. coherentD. competent35. However, the nature of online ________ is such that we tend to be more honest, more intimate.A. interruptionsB. interpretationsC. imaginationsD. interactions36. Reading extensively can broaden our vision and extend our life into a new _________.A. perspectiveB. hierarchyC. layerD. dimension37. I was quite _______ to find my test score well below that of my tablemate.A. fascinatedB. dismayedC. amusedD. convinced38. An earthquake of 8- _________ struck some parts of this province, causing a death toll of over 30,000.A. altitudeB. aptitudeC. magnitudeD. gratitude39. Both linguists and psychologists are eager to learn more about the process of language ________.A. acquisitionB. attainmentC. possessionD. fulfillment40. An overseas market with a great growth potential is not easy to _________.A. break downB. break upC. break throughD. break intoPART III CLOZE TEST (10 minutes, 10 points, 1 point each)According to the U.S. National Highway Traffic Safety Administration (NHTSA), car crashes are the leading cause of death among children 41 5 and 14 years of age. Says NHTSA: "Over 50% of children who die in crashes are 42 by safety devices. 43 , 4 out of 5 children are improperly restrained."The NHTSA offers a number of safety tips and 44 for those who are accompanied by children while driving. Although laws 45 from country to country and even from state to state, these guidelines may 46 food for thought to many parents and guardians of children. Please check your local laws and do 47 you can to keep your precious baby safe.The safest place for all children is in the back seat. Infants should be 48 in a rear-facing safety seat in the backseat of the car. A child at least a year old and 49 at least 20 pounds may be placed in a forward-facing seat. At 40 pounds, the child can use a "booster seat", which is secured by one of the car'slap and shoulder 50 . At approximately 80 pounds and a height of about four feet nine inches, the child may begin using an adult safety belt.41. A. at B. between C. for D. about42. A. bound B. undefined C. unrestrained D. inhibited43. A. Of course B. On contrary C. Nevertheless D. In addition44. A. cautions B. forms C. notes D. concepts45. A. work B. vary C. enforce D. affect46. A. give way B. differ from C. serve as D. deal with47. A. whatever B. whichever C. that D. which48. A. tied B. stuck C. surrounded D. placed49. A. weight B. weighted C. weigh D. weighing50. A. stripes B. belts C. ribbons D. bowsPART IV READING COMPREHENSION (45 minutes, 30 points, 1 point each)Passage OneAmericans are more socially isolated than they were 20 years ago, separated by work, commuting and the single life, researchers reported on Friday.Nearly a quarter of people surveyed said they had "zero" close friends with whom to discuss personal matters. More than 50 percent named two or fewer confidants, the researchers said.“This is a big social change, and it indicates something that's not good for our society,”said Duke University Professor Lynn Smith-Lovin. Smith-Lovin's group used data from a national survey of 1,500 American adults that has been ongoing since 1972.She said it indicated people had a surprising drop in the number of close friends since 1985. At that time, Americans most commonly said they had three close friends whom they had known for a long time, saw often, and with whom they shared a number of interests. They were almost as likely to name four or five friends, and the relationships often sprang from their neighborhoods or communities.Ties to a close network of friends create a social safely net that is good for society. Research has also linked social support and civic participation to a longer life, Smith-Lovin said.The data also show the social isolation trend mirrors other class divides: Non-whites Americans and the highly educated. That means that in daily life, personal emergencies and national disasters such as Hurricane Katrina, those with the lowest resources also have the lowest personal friends to call for advice and assistance."It's one thing to know someone and exchange e-mails with them. It's another thing to say, …Will you give me a ride out of town with all of my possessions and pets? And can I stay with you for a couple or three months?‟” Smith-Lovin said."Worrying about social isolation is not a matter of remembering a warm past. Real things are strongly connected with that," added Harvard University Public Policy Professor Robert Putnam. He suggested flexible work schedules would allow Americans to tend both personal and professional lives.51. One reason for the social isolation of Americans is ________.A. frequent relocationB. frequent travelingC. living aloneD. working flexible hours52. The percentage of people with more than two close friends is about________.A. 25%B. 50%C. 60%D. 75%53. According to the passage, close social ties among people are_______.A. a must for social progressB. beneficial for the familyC. a source of happinessD. good for people's health54. It is implied that ________ tend to live a more socially isolated life.A. people in the higher social ladderB. people in the lower social ladderC. people with a longer life spanD. people with a shorter life span55. According to Robert Putnam, ________.A. it is useless to worrying about social isolationB. social isolation is not necessarily bad for usC. it is time to do something about social isolationD. social isolation does not mean the end of society56. The passage is focused on _________.A. the new trend in American social lifeB. the urban problems in modem societyC. the ways to build a strong social networkD. the reasons for close interpersonal relationshipsPassage TwoFor years, France proudly resisted establishing domestic smoking bans. It held out longer than Britain, Spain and Italy, but on January 2, 2008, it finally forbid cigarettes in bars, cafes, restaurants and clubs.This was not a decision taken lightly. Magazines ran photo-spreads reminding us that French people look seriously cool with a cigar in their mouth. There were illustrations of Charles de Gaulle, the French president during World War II, Brigitte Bardot the 1950s famous fashionist, and the famous French philosopher and writer, Jean-Paul Sartre. Even the present President Nicolas Sarkozy, extremely image-conscious, posed for Paris Match magazine with a fat cigar.But now, France's traditional “cafe-clope” (morning coffee and cigarette) is only possible if people can bear the freezing temperatures outside.In the latter part of the 20th century, the health risks of second-bend tobacco smoke were made public. Then, in 1975, a modern wave of smoking bans started in Minnesota, the US. Since then, many countries and regions have joined in the movement. Among them, the US has been a pioneer, with California being the first in the world to ban indoor smoking at all public places, including bars and restaurants. Thus some French people call the non-smoking law issued on January 2 "a touch too American".However, studies before the ban showed that 70 percent of French people supported the enforcement. The public's positive response means that the smoking ban will be just one more US trend accepted by French society. Even among strong smokers, no one wants to risk a fine.French barman Jean-Michel, dressed in a leather waistcoat and a cowboy-style shoelace tie, complained harshly about the ban. Was be anticipating a smokers' revolt? "No," he said calmly. "People will respect it. I'll do what I did at school. I'll smoke in the toilets.”According to the non-smoking law, individuals who smoke in bars, cafes, restaurants or clubs can be fined up to 450 euros. The owners of these places can be fined up to 750 euros if they fail to stop customers from smoking.57. The law of banning smoking in public places was not made easily because _______.A. France proudly resists establishing new lawsB. French people like their images with a cigar in their mouthC. French people have had such a strong habit since World War IID. smoking has become fashionable for Frenchmen lately58. According to the passage, French President Nicolas Sarkozy _________.A. pays a great deal of attention to his own public imageB. has been a heavy smoker in public eyesC. strongly opposes the law of banning smokingD. is a model in the hearts of French people59. Which of the following is the first place in the world to ban indoor smoking at all public places?A. Minnesota.B. California.C. France.D. Britain.60. It is implied in the passage that _________.A. French people usually resist American trendsB. French people oppose the non-smoking law because it is too AmericanC. French people often follow American suitsD. French people respect the non-smoking law because it is from the US61. By saying "I'11 do what I did at school", Jean-Michel means that _______.A. he did not smoke when he was a school studentB. he had to smoke in the toilets when he was at schoolC. he olden anticipated revolts when he was at schoolD. smoking was not allowed in the toilets when he was at school62. What is the main idea of tiffs passage?A. It is difficult to establish new laws in France.B. How the non-smoking law was established?C. Non-smoking law is another American trend.D. France finally accepts smoking ban.Passage ThreeIt is the world's fourth-most-important food crop, after maize, wheat and rice. It provides more calories, more quickly, using less land and in a wider range of climates than any other plant. It is, of course, the potato.The United Nations has declared 2008 the International Year of the Potato. It hopes that greater awareness of the merits of potatoes will contribute to the achievement of its Millennium Development Goals, by helping to reduce poverty and promote economic development. It is always the international year of this or month of that. But the potato's unusual history means it is well worth celebrating.Unlikely though it seems, the potato promoted economic development by supporting the Industrial Revolution in England in the 19th century. It provided a cheap source of calories and was easy to cultivate, so it liberated workers from the land. Potatoes became popular in the north of England, as people there specialized in livestock farming and domestic industry, while farmers in the south concentrated on wheat production. By a happy accident, the concentrated industrial activity in the regions where coal was readily available, and a potato-driven population boom provided ample workers for the new factories. Friedrich Engels even declared that the potato was the equal of iron for its "historically revolutionary role".In the form of French fries, served alongside burgers and Coca-Cola, potatoes are now a symbol of globalization. This is quite a change given the skepticism which first greeted them on their arrival in the Old World in the 16th century. They were variously thought to be fit only for animals, to be associated with the devil or to be poisonous. They took hold in 18th-century Europe only when war and famine meant there was nothing else to eat; people then realized just how useful and reliable they were. As Adam Smith, one of the potato's many admirers, observed at the time, "The very general use which is made of potatoes in these kingdoms as food for man is a convincing proof that the prejudices of a nation, with regard to diet, however deeply rooted, are by no means unconquerable." Mashed, fried, boiled and roast, a humble potato changed the world, and people everywhere should celebrate it.63. By making 2008 the Year of the Potato, the United Nations hopes that the potato could ________.A. enrich people's daily food supplyB. be used to replace other food cropsC. help deal with environmental issuesD. he a solution to some economic problems64. Paragraph 3 mainly describes _________.A. why the potato became popular in the north of EnglandB. why the potato was important in England's population growthC. how the potato contributed to England's industrial developmentD. how the potato helped improve England's working conditions65. Friedrich Engels's words show that he ________.A. thought highly of the potatoB. took the potato too seriouslyC. underestimated the role of the potatoD. lacked the basic knowledge of the potato66. Europeans began to eat potatoes in the 18th century because _________.A. there was a serious food shortageB. they realized that potatoes tasted goodC. food safety had been greatly improvedD. eating potatoes had become fashionable67. What Adam Smith said could be used to demonstrate the potato's _________.A. general useB. main featuresC. success storyD. bright future68. The best title for the passage is __________.A. 2008-- the Potato's New MissionB. In Praise of the PotatoC. The History of the PotatoD. The Potato and GlobalizationPassage FourYou need a new vacuum cleaner. Several are on display—different features—but there are no clerks to be found. Finally a guy in a store vest slips past. You begin to ask questions, but he knows even less about vacuum cleaners than you do.Robert Odom, shopping at the Southcenter Mall near Seattle, finds “it‟s harder to get waited on now. many stores have one person covering a tremendous area. You‟ve got to go looking to find a clerk.”Retailing is big business in the United States. Every day, billions of transactions take place in the nation‟s 1.4 million stores. Inventive technology speeds a staggering $2.5-trillion-a-year flow of purchases. But why do those bad encounters with salespeople continue to bother us so?When Yankelovich Partners asked 2500 shoppers what was "most important to you regarding customer service," people ranked courtesy, knowledgeability and friendliness at the top. Almost two out of three said that salespeople "don't care much about me or my needs.”The American Customer Satisfaction Index, developed in 1994 at the University of Michigan's National Quality Research Center, shows customer satisfaction declining about a point a year. Retailers now average a less-than-satisfactory 71 out of 100. Even top performers have slipped.What happened? John Goodman, president of Technical Assistance Research Programs, a customer-service consulting firm, told us, "To cut costs, many retailers made the mistake of trimming staff to the bone with obvious consequences."How good is the help once you find it? Carol Cherry, founder of Shop'n Chek, which monitors customer service for retailers and other clients, says, "One of the biggest problems we encounter is unknowledgeable and untrained salespeople." Bruce Van Kleeck, a vice president of the National Retail Federation, says, "We're not training as much as we used to," and urges more ongoing training for veteran salespeople.The sad fact is, stores can get away with poor customer service because customers let them. Customer-service expert John Goodman estimates that about half of customers continue to do business with firms they feel have mistreated them. This is "behavioral loyalty," explains Jeff Ellis of Maritz Marketing Research Inc. "We may bad-mouth a store after a bad experience, but we go back because it's close to our house or carries items we like."69. The example in paragraph 1 shows that the salesman needs improvement on___________.A. knowledgeB. politenessC. friendlinessD. communication70. According to the American Customer Satisfaction Index,_______________.A. customer satisfaction with retailers remains constantly lowB. customer satisfaction with even the best retailers is droppingC. customers complain most about the quality of the salespeopleD. customers put too high a demand on service these days71. What may be the "obvious consequences" mentioned in paragraph 6?A. The customers are not willing to buy from the retailers.B. The customers cannot get the help they need.C. The salespeople are not satisfied with their working condition.D. The salespeople do not receive enough training.72. Carol Cherry points out that the most serious problem is that ______________.A. the quality of the salespeople cannot be guaranteedB. the retailers do not care as much about training as they used toC. the salespeople do not fully understand the benefits of trainingD. the retailers cannot afford basic training for its employees73. Which of the following examples can demonstrate the "behavioral loyalty"?A. Customers frequent the store providing satisfactory service.B. Customers refuse to buy in the store after a bad experience there.C. Customers go to the store with good items no matter where it is.D. Customers keep visiting the store that has treated them badly.74. The passage mainly discusses_______________.A. how we can get good customer serviceB. why retailers should improve customer serviceC. why there is poor customer serviceD. what kind of customer service we needPassage FiveIn terms of lives lost and property destroyed, the Civil War was the most terrible armed conflict Americans have ever known, but that has not prevented them from remembering it with enduring fondness. The Civil War remains the most written-about period in American history, and it provides boundless entertainment in the United States and around the world. Instead of an object lesson in the dangers of political polarization, racial inequality, and human cruelty, fans consider their favorite war an exercise in nobility--a bloodbath that somehow forged the unbreakable bonds of American national identity.Most Civil War historians were reared in this romantic tradition, and they have yet to fully free themselves from it. They still view the struggle through rose-colored glasses, making excuses for flawed heroes who have the reputations they never deserved. With the publication of While in the Hands of the Enemy: Military prisons of the Civil War, Charles W. Sanders has distinguished himself as one of the few scholars capable of addressing the Civil War with utter frankness. His brilliantly researched book is a ringing accusation of the prisoner-of-war (POW) systems maintained by both sides of that war, as well as the politicians and soldiers who deliberately sent thousands of men to needless suffering and death. There are no heroes in this study, just too many unnecessary victims.Sanders sets his study in context by first tracing the evolution of POW policy during the American Revolution, War of 1812, and Mexican War. Americans knew that POWs were vulnerable to mistreatment, and the quickest way to improve their lot was to negotiate exchanges with the enemy. At the outset of the Civil War, neither side was prepared to cope with the many prisoners-of-war their armies captured, and prisoners inevitably suffered from inadequate housing, food, medical care, and other necessities. Abraham Lincoln delayed the implementation of general exchanges until July 1862 for fear it would allow rebellious southerners to claim actual recognition of the Southern sovereignty. Once implemented, the exchange system quickly emptied prisons in the North and South, but it began breaking down by the end of the year.75. Americans generally remember the Civil War with _______.A. sadnessB. suspicionC. horrorD. affection76. Most Civil War historians would agree that the Civil War may have _________.A. raised the awareness of the race issueB. weakened American national identityC. strengthened American national identityD. taught a useful lesson about human nature77. Civil War historians usually believe that "flawed heroes" ___________.A. ought to be criticizedB. could be forgivenC. should be studied furtherD. should be evaluated objectively78. According to Charles W. Sanders, the Civil War _______________.A. brought pointless miseryB. created various heroesC. started the first POW systemD. was brutal but inevitable79. At the beginning of the Civil War, ____________ .A. the POW exchanges were frequentB. the number of the POWs was smallC. the POWs were in difficult situationsD. both sides used the POWs for political purposes80. What does the passage say about the POW exchange during the Civil War?A. It should have started earlier.B. It lasted for many years.C. It became a successful model for later time.D. It raised the public awareness of the POW problem.PAPER TWOPART V TRANSLATION (30 minutes. 20 points)Section A (15 minutes, 10 points)Unlike the real world, where personalities are complex, motives unclear, and outcomes ambiguous, television presents a world of clarity and simplicity. In show after show, rewards and punishments follow quickly and logically. Crises are resolved, problems are solved, and justice always triumphs. The central characters in these dramas are clearly defined: dedicated or corrupt; selfless or ambitious; efficient or sentimental. To insure the widest acceptability and tell a story entertainingly, the plot lines follow the most commonly accepted notions of morality and justice, whether or not those notions bear much resemblance to reality. The long list of commercials between parts of the play sometimes drives you crazy. Section B (15 minutes, 10 points)中国一直有重视教育的传统，尤其是儿童的教育。

北京航空航天大学2008年硕士研究生入学考试试题综合英语I. Define the following terms (20, 2x10)1. embedding2. morphology3. lingua franca4. minimal pairs5. synchronic linguistics6. interlanguage7. adjacency pairs8. componential analysis9. mode of discourse10. code-switchingII. Briefly answer the following questions (20, 4×5)1. What is linguistic determinism?2. What is sociolinguistics?3. What are the major concerns of the Prague School theory?4. What are the crucial features or criteria of diglossia in the narrow sense of the term?5. What are the unique features of Halliday’s systemic linguistics?III. Answer the following questions. (20, 4x5)1. Why is it important to know the relations a sign has with others, such as syntagmatic andparadigmatic relations?2. A speech act consists of three related acts according to J. L. Austin’s Speech Act theory. Whatare they? Analyze the following conversation in the light of Speech Act theory.Customer: Waiter! There’s a fly in my soup.Waiter: Don’t worry, there’s no extra charge.3. Words are in different sense relations with each other. What sense relation is illustrated in eachof the pairs of words below? Add one more example to each pair.(a) casual-informal (b) intelligent-stupid(c) steal-steel (d) animal-dog4. What do you think is the difference between descriptive linguistics and prescriptive linguistics?Give your reasons.5. Think of the four maxims of the Cooperative Principle proposed by P. Grice, and explain theviolation of maxims in the cases below.(1) A: Have you seen my watch?B: Look in the drawer.(2) A: Reno’s the capital of Nevada.B: Yeah, London’s the capital of New Jersey.(3) A: I really liked that dinner.B: I’m a vegetarian.(4) A: Let’s dine out with the kids this weekend.B: Okay, but not M-c-D-o-n-a-l-d-s.IV. Write a short paper of your understanding of the following questions. (30, 10x3)1. What do you think is the relationship between the arbitrariness of the linguistic sign and the way language is used to classify reality? Illustrate your view with examples.2. Eskimos have many different words for different types of snow, Aborigines for different types of sand, and in Arabic one must choose from a whole range of words which are subsumed under the Western category CAMEL. Can you explain these phenomena with you linguistic knowledge?3. Which linguistic school or approach do you think will develop rapidly in China? Elaborateyour view in no less than 100 words.附表：1合作经营协议书甲方：乙方：经甲乙双方友好协商，就中石油煤层气保德区块地面工程合作经营事宜，自愿达成如下协议，以资信守：一、合伙宗旨：共同合作、合法经营、利益共享、风险共担。

北京航空航天大学考博英语真题及解析(总分：100.00，做题时间：180分钟)Ⅰ Reading ComprehensionTest One(总题数：1，分数：7.50)Sixty days walking over ice and snow in temperature as low as -45℃, with nothing to keep you company except the occasional polar "bear". This is no small achievement. Only a few people have ever walked to the North Pole unassisted, and if Christina Franco succeeds, she will have earned a place in the history books and met one of the few remaining challenges of exploration left to women.Her 480-mile journey will begin in northern Canada, dragging a sledge that weighs as much as she does. At the end of each day's walking or skiing, she will pitch her tent in subzero temperatures, get into a sleeping bag filled with ice, and attempt to sleep to the unsettling background sounds of howling wind and cracking ice, which may or may not signal the approach of one of those polar bears. "I'll carry a pistol to scare any bears away," says Franco, 42. "The bears that far north won't have had contact with humans, fortunately, so they won't associate me with food, but they will be curious and that's dangerous. If it uses a paw to see what you are, it could damage your tent—or your arm. I imagine I'll have quite a few sleepless nights."Many of the early polar explorers suffered from disease and injuries, and while modem technology (lightweight materials, satellite phones, places on stand-by to carry out rescue missions) has lessened the dangers, it can never make such an inhospitable landscape anything approaching safe. It can take just five minutes for any uncovered skin to become frostbittenand, once the sun has risen, Franco will only be able to remove her sunglasses inside her tent, otherwise the intensity of the sunlight reflecting off the snow would cause snow blindness. Just to heighten the danger, the cold will slow down her brain functions, so it will be more difficult to make split-second decisions in the event of a sudden crisis.She will use about 8,000 calories a day, losing nearly half a kilogram every 24 hours. "The problem is that the human body can only take on about 5,500 calories a day," she says. "So you have to fatten up before you set off or you'll run out of energy." Franco is currently trying to put on 19 kilos. She may complain about not fitting into any of her dresses, but when Franco weighs herself in front of me and finds she's lost one kilo rather than gained two, as she'd expected, she's very upset. "I hope my scales are wrong because, if not, I've lost weight," she says, reaching for one of many bars of chocolate lying around her kitchen.1. What does the writer say about the history of exploration? ______（分数：7.50）A.Walking to the North Pole used to be considered easier than other journeys.B.No woman has ever completed the journey to the geographic North Pole.C.Female explorers have already done most of the world's difficult journeys. √D.Franco is already an important historical figure for her previous journeys.解析：根据第一段中的“Only a few people have ever walked to the North Pole unassisted, and if Christina Franco succeeds, she will have earned a place in the history books and met one of the few remaining challenges of exploration left to women.”可知，只有少数人曾独自走到北极，如果克里斯蒂娜·佛朗哥成功了，她将在史书中占有一席之地，完成为女性留下的尚未完成的为数不多的探险挑战之一。

2022年考研考博-考博英语-北京航空航天大学考试全真模拟全知识点汇编押题第五期（含答案）一.综合题(共15题)1.单选题More than two hundred years ago the United States （）from the British Empire and became all independent country.问题1选项A.got offB.pulled downC.broke awayD.drop off【答案】C【解析】短语辨析。

句意：200多年以前，美国从大英帝国中出来，成为完全独立的国家。

get off 下来；pull down 推翻；break away 脱离；drop off 减少。

因此，C项符合句意。

2.单选题The reception was attended by（）members of the local community.问题1选项A.excellentB.conspicuousC.prominentD.noticeable 【答案】C【解析】C选项prominent意为“突出的；著名的”。

句意：参加这次招待会的是当地社区的（）人士。

A选项excellent极好的；B选项conspicuous显而易见的；C选项prominent突出的；著名的； D选项noticeable引人注目的，C选项prominent符合句意。

3.单选题The ship’s generator broke down，and the pumps had to be operated（）in-stead of mechanically.问题1选项A.manuallyB.artificiallyC.automaticallyD.synthetically【答案】A【解析】句意：船的发电机出了故障，所以得（）操作泵以代替机械操作。

A选项manually手工地；B 选项artificially人为地；C选项automatically自动地；D选项synthetically 综合地，A选项符合句意。

2015年北京航空航天大学考博英语真题试卷(题后含答案及解析)题型有：1. Reading Comprehension 2. Structure and V ocabulary 3. Cloze 4. English-Chinese Translation 5. WritingReading ComprehensionTo call someone bird-brained in English means you think that person is silly or stupid. But will this description soon disappear from use in the light of recent research? It seems the English may have been unfair in association bird’s brains with stupidity. In an attempt to find out how different creatures see the world, psychologists at Brown University in the USA have been comparing the behaviour of birds and humans. One experiment has involved teaching pigeons to recognize letters of the English alphabet. The birds study in “classrooms”, which are boxes equipped with a computer. After about four days of studying a particular letter, the pigeon has to pick out that letter from several displayed on the computer screen. Three male pigeons have learnt to distinguish all twenty-six letters of the alphabet in this way. A computer record of the birds’four-month study period has shown surprising similarities between the pigeons’and human performance. Pigeons and people find the same letters easy, or hard, to tell apart. For example, 92 percent of the time the pigeons could tell the letter D from the letter Z. But when faced with U and V (often confused by English children), the pigeons were right only 34 percent of the time. The results of the experiments so far have led psychologists to conclude that pigeons and humans observe things in similar ways. This suggests that there is something fundamental about the recognition process. If scientists could only discover just what this recognition process is it could be very useful for computer designers. The disadvantage of a present computer is that it can only do what a human being has programmed it to do and the programmer must give the computer precise, logical instructions. Maybe in the future, though, computers will be able to think like human beings.1．The writer suggests that the expression “bird-brained” might be out of use soon because it is______.A．sillyB．impoliteC．unnecessaryD．inappropriate正确答案：D解析：根据文中第一段的“To call someone bird-brained in English means you think that person is silly or stupid．But will this description soon disappear from use in the light of recent research?It seems the English may have been unfair in associationbird’s brains with stupidity．”可知，在英语中，如果称某人的大脑像鸟脑袋一般，意思就是这个人没有头脑或非常愚蠢。

2008年概率论考博试题填空题：(每题5分，共10小题)1.袋中装有2个伍分、3个贰分，5个壹分的硬币。

任取其中5个，求总值不少于壹角的概率。

2.甲、乙两艘轮船驶向一个不能同时停泊两艘轮船的码头停泊，它们在一昼夜内到达的时刻是等可能的。

如果甲船停泊的时间是3h,乙船停泊的时间为2h,求它们中的任何一艘都不需等待码头空出的概率？3.将5本不同的数学书，3本不同的物理书，2本不同的英语书随意地摆放在书架的同一层，求恰有3本数学书放在一起的概率。

2009年概率论考博试题一、填空题，每题4分，共11小题1.有n个白球和n个黑球混合组成的一组球，现将其随机地分成两组，然后从这两组球中随机地各抽取一只球，问取到两个相同颜色球的概率是多少？_______2•无线电通讯中，又有随机干扰，当发出信号为“•”时，收到信号为“ •”、“不清”和“一”的概率分别为0.7, 0.2，0.1.当发出信号为“一”时，收到信号为“一”、“不清”和“.”的概率分别为0.9，0.1和0.如果发报过程中“.”和“一”出现的概率分别是0.6和0.4，当收到信号“不清”时，原发信号是“.”的概率是多少？____________3.已知Y(t) =X sin(7 R, X ~ N (45454 -1,3),二~ U(0,2二)「为已知常数，问E[Y(tJY(t2)]二_____________n二、已知Y n =7 X i，P{X i =0} =2/3,P{X j =1} =1/3, X i 之间相互独立。

(10 分，大概)1.求Y n的分布律；22.求E(Y n)，D(Y n)，E(Y n )3.求E(Y n* Y n l)三、已知连续型随机变量X的分布函数：0 x兰0F x(X)=i 0 vx £兀5丿1 X "求Y = sinX的概率密度f Y(y)。

(10分，大概)已知X i ~ N(0,J，问2(X」X2)2(X4 X5 X6) 的分布是什么？方差是多少?四、选择题，每题5分(大概，也许是4分)，共5题(具体内容一个也记不清了) 只记得一个题的题干：f W x—"x4, x"五、X的概率密度函数f(X) , X i_X n为一已知样本。