2005四系试卷A

2005年6月大学英语四级CET4真题及答案2005年6月大学英语四级CET4真题及答案2005年6月大学英语四级CET4真题及答案a) are becoming more cautious about the products they are going to buyb) are still not willing to pay more for products with green labelingc) are becoming more aware of the effects different products have on the environmentd) still do not know the exact impact of different products on the environment33. a study was carried out by britain’s ncc to _______a) find out how many claims made by products fail to meet environmental standardsb) inform the consumers of the environmental impact of the products they buyc) examine claims made by products against iso standardsd) revise the guidelines set by the international standards organization34. what is one of the consequences caused by the many claims of household products?a) they are likely to lead to serious environmental problemsb) consumers find it difficult to tell the true from the falsec) they could arouse widespread anger among consumerd) consumers will be tempted to buy products they don’t need35. it can be inferred from the passage that the lobby group consumer international wants to ____.a) make product labeling satisfy iso requirementsb) see all household products meet environmental standardsc) warn consumers of the danger of so-called green productsd) verify the efforts of non-polluting productspassage 4two hours from the tall buildings of manhattan and philadelphia live some of the world’s largest black bears. they are in northern pennsylvania’s pocono mountains, a home they share with an abundance of other wildlife.the streams, lakes, meadows (草地), mountain ridges andforests that make the poconos an ideal place for black bears have also attracted more people to the region. open spaces are threatened by plans for housing estates and important habitats (栖息地) are endangered by highway construction . to protect the poconos’natural beauty from irresponsible development, the nature conservancy (大自然保护协会) named the area one of america’s “last great places”.operating out of a century-old schoolhouse in the village of long pond, pennsylvania, the conservancy’s bud cook is working with local people and business leaders to balance economic growth with environmental protection. by forging partnerships with people like francis altemose, the conservancy has been able to protect more than 14,000 acres of environmentally important land in the area.altemose’s family has farmed in the pocono area for generations. two years ago francis worked with the conservancy to include his farm in a county farmland protection program. as a result, his family’s land can be protected from development and the altemoses will be better able to provide a secure financial future for their 7-year-old grandson.cook attributes the conservancy’s success in the poconosto having a local presence and a commitment to working with local residents“the key to protecting these remarkable lands is connecting with the local community,”cook said. “the people who live there respect the land. they value quiet forests, clear streams and abundant wildlife. they are eager to help with conservation effort.for more information on how you can help the nature conservancy protect the poconos and the world’s other “last great places,”please call 1-888-564 6864 or visit us on the world wide web at .36. the purpose in naming the poconos as one of america’s “last great places”is to ________a) gain support from the local communityb) protect it from irresponsible developmentc) make it a better home for black bearsd) provide financial security for future generations37. we learn from the passage that _______a) the population in the pocono area is growingb) wildlife in the pocono area is dying out rapidlyc) the security of the pocono residents is being threatenedd) farmlands in the pocono area are shrinking fast38. what is important in protecting the poconos according to cook?a) the setting up of an environmental protection websiteb) support from organizations like the nature conservancy 共7页，当前第4页42005年6月大学英语四级CET4真题及答案相关内容:。

2005年4月份自考全国统一命题考试试题及答案Ⅰ.Vocabulary and Structure（10points，1point for each）从下列各句四个选项中选出一个最佳答案，填在该题后的括号内。

1. _____ or not you re conscious of it，you re constantly valuing items in dollars. 【】A. AsB. WhetherC. HoweverD. If2.Other people stop at each new word and look it_____in the dictionary. 【】A. upB. downC. backD. over3.Many of the younger buyers say they are turned off by the poor_____of modern goods.【】A. securityB. quantityC. safetyD. quality4.In one type of laboratory test all the variables _____one are controlled. 【】A. byB. andC. butD. or5. _____ when you go through the mental exercises to come up with a tentative definition should you open the dictionary to see if you re right. 【】A. SimplyB. PreciselyC. OnlyD. Particularly6.The satellite also demonstrated how it could provide help to people living in isolated areas where _____is difficult. 【】A. transportationB. instructionC. applicationD. compensation7.Their mother is busy ready for work. 【】A. gotB. getsC. to getD. getting8.Itwas long supposed that the main difference between animals and plants was that the former could move about while the could not. 【】A. otherB. latterC. anotherD. later9.The moon merely _____ the light of the sun，like a huge mirror hung in the sky. 【】A. reflectsB. demonstratesC. transmitsD. launches10.Some people who are very intelligent and successful in their fields find_____difficult to succeed in language learning. 【】A. whichB. howC. thatD. itⅡ.Cloze Test（10points，1point for each）下列短文中有十个空格，每个空格有四个选项。

2005年12月四级A卷试题及答案（文字版）（2）Part II Reading comprehension (35 minutes)Directions: There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked [A], [B], [C] and [D]. You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.Passage OneQuestions 21 to 25 are based on the following passage.Just five one-hundredths of an inch thick, light golden in color and with a perfect “saddle curl,” the Lay’s potato chip seems an unlikely weapon for global domination. But its maker, Frito-Lay, thinks otherwise. “Potato chips are a snack food for the world,” said Salman Amin, the company’s head of global marketing. Amin believes there is no corner of the world that can resist the charms of a Frito-Lay potato chip.Frito-Lay is the biggest snack maker in America, owned by PepsiCo, and accounts f or over half of the parent company’s $3 billion annual profits. But the U.S. snack food market is largely saturated, and to grow, the company has to look overseas.Its strategy rests on two beliefs: first, a global product offers economies of scale with which local brands cannot compete, and second, consumers in the 21st century are drawn to “global” as a concept. “Global” does not mean products that are consciously identified as American, but ones that consumers —especially young people — see as part of a modem, innovative(创新的) world in which people are linked across cultures by shared beliefs and tastes. Potato chips are an American invention, but most Chinese, for instance, do not know that Frito-Lay is anAmerican company. Instead, Riskey, the company’s research and development head, would hope they associate the brand with the new world of global communications and business.With brand perception a crucial factor, Riskey ordered a redesign of the Frito-Lay logo(标识). The logo, along with the company’s lo ng-held marketing image of the “irresistibility” of its chips, would help facilitate the company’s global expansion.The executives acknowledge that they try to swing national eating habits to a food created in America, but they deny that amounts to economic imperialism. Rather, they see Frito-Lay as spreading the benefits of free enterprise across the world. “We’re making products in those countries, we’re adapting them to the tastes of those countries, building businesses and employing people and changing lives,” said Steve Reinemund, PepsiCo’s chief executive.原文出处：FritoLay: Using Potato Chips to Spread the Spirit of Free EnterpriseJust five one-hundredths of an inch thick, light golden in color and with a perfect "saddle curl," the Lay#39;s potato chip seems an unlikely weapon for global domination.But its maker, T exas-based Frito-Lay, thinks otherwise. "Potato chips are a snack for the world," said Salman Amin, the company#39;s head of global marketing. Amin believes there is no corner of the world, no race or tribe, that can resist the charms of a Frito-Lay potato chip.The Chinese might have their nyen gao ping, made from rice flour, and the Indians their lentil-and-chickpea namkeens, but Frito-Lay believes they would rather be eating potato chips. Thecompany#39;s research has shown that when given a choice between their local snack and a Frito-Lay chip, consumers in most countries will choose the chip.Putting its findings into practice, Frito-Lay has expanded on all five continents by buying up local snack makers or defeating them with its marketing expertise and sheer size."Never have we introduced Lay#39;s potato chips and had it not be successful," said Dwight Riskey, the research and development head who devised Frito-Lay#39;s global strategy five years ago. "It#39;s been successful every single place we#39;ve introduced it."Thinking Globally, Acting GloballyFrito-Lay, which also produces Doritos and Chee-tos, is the biggest snack maker in the United States, with 55 percent of the potato chip market. It is owned by PepsiCo, and accounts for more than half of the parent company#39;s $3 billion profits every year. But the U.S. snack market is largely saturated, and in order to grow — the key to remaining successful — the company had to look overseas.Riskey#39;s strategy rests on two beliefs: first, that a global product offers economies of scale with which local brands cannot compete, and second that consumers in the 21st century are drawn to "global" as a concept. By "global," Riskey does not mean products that are consciously identified as American, like Coca-Cola and Nike, but ones that consumers —especially young people — see as part of a modern, innovative world in which people are linked across cultures by shared beliefs and tastes. Potato chips are an American invention — created by a chef in Saratoga Springs, N.Y. in 1853 — but most Chinese, for instance, do not know that Frito-Lay is an American company.Instead, Riskey would hope they associate the brand with the brave new world of global communications and business.With brand perception a crucial factor, Riskey ordered a redesign of the Frito-Lay logo, eventually settling on a red logo with a banner suggesting "celebration" and a sun denoting "universality." The logo, along with the company#39;s long-held marketing image of the "irresistibility" of its chips, would underpin the company#39;s global expansion.Taking Aim at the Local SnackFrito-Lay honed a strategy for moving into new countries where a local snack industry is already established. Rather than face the costs of building a new business in an unfamiliar market, the company identifies the leading local snack manufacturer and offers to buy it out. If the local manufacturer refuses to sell, Frito-Lay moves into the market on its own, using its size and marketing experience to cut into the local manufacturer#39;s sales. Often, at that point, the local company gives in and sells, sometimes for a lower price than the original offer.If the preferred local snack is already a potato chip, Frito-Lay rebrands it. After buying Walkers, the dominant chip in Britain, the Texas company refashioned the Walkers logo into the red "banner sun" design, as a first step toward changing the brand to Frito-Lay outright. Similar plans are under way for Sabritas in Mexico and Simba in South Africa. "We just say, #39;You know that stuff you love? Well, now it#39;s going to be called Lay#39;s,#39;" said Riskey.If the locals are used to eating something other than potato chips, Frito-Lay devises "differentiated products" that bridge the way to the chip. For the Indian market, the company created Kurkure Twisteez, a potato snack that comes in local flavors likeMasala Munch.Sometimes Frito-Lay#39;s products are so unfamiliar that the advertising campaigns focus on educating consumers in the hope of changing their "consumption habits." In China, Frito-Lay ads show potatoes actually being sliced, so people know where the chips come from. In Turkey, the company distributed pamphlets suggesting new recipes and eating habits: "Try a tuna sandwich for lunch, and join it with a bag of chips."Looking for #39;New Occasions#39;Like other multinational companies, Frito-Lay has learned that the best managers are often locals who know the market and culture well. Although they must follow certain global standards —such as the company#39;s long-held marketing theme of "irresistibility" — regional managers are encouraged to look for for new "occasions" to increase sales in their specific areas.In Holland, where the Dutch tend to eat potato chips only at night, as an after-dinner snack, manager Eugene Willemsen focused his efforts on changing their habits by distributing free samples on the streets during the day. He also targeted high schools, knowing that children were driving Frito-Lay#39;s growth in Holland. "For us, the biggest opportunity for growth is to penetrate new occasions with salty snacks," Willemsen said.In South Africa, national sales manager Arnold Selokane boosted sales in native townships by hiring local drivers to make deliveries, making the product seem less foreign. In China, sales director Jackson Chiu raised sales by 57 percent in one year, in part by focusing on girls and young women. "We market to girls and the boys follow," he said.The company encourages such initiative by flying promisingmanagers to the Frito-Lay headquarters in Plano, Texas, or the PepsiCo campus in Purchase, N.Y., for intensive courses on marketing and business development. Selokane and Chiu were among 200 PepsiCo employees honored at the company#39;s annual "Ring of Honor" ceremony in 2001. With honorees from 50 countries, speaking 30 different languages, the four-day program resembled the United Nations#39; General Assembly, complete with headsets and banks of translators.Not Just Potato ChipsThe executives behind Frito-Lay#39;s global expansion acknowledge that they try to swing national eating habits to a food that was created in America, but they deny that amounts to economic imperialism. Rather, they see Frito-Lay as spreading the benefits of free enterprise across the world. "We#39;re making products in those countries, we#39;re adapting it to the tastes of those countries, building businesses and employing people and changing lives," said Steve Reinemund, PepsiCo#39;s chief executive.Frank Wong, who runs Frito-Lay#39;s operations in China, believes that by training Chinese managers the company is helping build up an educated middle class that will play a major role in the country#39;s economic transformation. "We bring a lot to China, a lot more than just the brand called Lay#39;s," he said.21. It is the belief of Frito-Lay’s head of global marketing that _____.A) potato chips can hardly be used as a weapon to dominate the world marketB) their company must find new ways to promote domestic salesC) the light golden color enhances the charm of their company’s potato chips{D) people all over the world enjoy eating their company’s potato chips}22. What do we learn about Frito-Lay from Paragraph 2?A) Its products used to be popular among overseas consumers.B) Its expansion has caused fierce competition in the snack marker.C) It gives half of its annual profits to its parent company.{D) It needs to turn to the world market for development.}23. One of the assumptions on which Frito-Lay bases its development strategy is that _____.{A) consumers worldwide today are attracted by global brands}B) local brands cannot compete successfully with American brandsC) products suiting Chinese consumers’ needs bring more profitsD) products identified as American will have promising market value24. Why did Riskey have the Frito-Lay logo redesigned?A) To suit changing tastes of young consumers.{B) To promote the company’s strategy of globalization. }C) To change the company’s l ong-held marketing image.D) To compete with other American chip producers.25. Frito-Lay’s executives claim that the promoting of American food in the international market _____.A) won’t affect the eating habits of the local peopleB) will lead to economic imperialism{C) will be in the interest of the local people} D) won’t spoil the taste of their chips。

武汉大学2005-2006学年度第一学期《分析化学》期末考试试卷（A）学号姓名院（系）分数一.填空（每空1分。

共35分）1．写出下列各体系的质子条件式：(1)c1(mol/L) NH4 H2PO4(2)c1(mol/L)NaAc+ c2(mol/L)H3BO32.符合朗伯-比尔定律的有色溶液，当有色物质的浓度增大时，其最大吸收波长，透射比。

|3. 检验两组结果是否存在显著性差异采用检验法，检验两组数据的精密度是否存在显著性差异采用检验法。

4．二元弱酸H2B，已知pH＝时，δH2B ＝δHB-；pH＝时δHB-＝δB2-, 则H2B的p K a1＝，p K a2＝。

5.已知(Fe3+/Fe2+)=，(Ce4+/Ce3+)=，则在1mol/L H2SO4溶液中用mol/L Ce4+滴定mol/L Fe2+，当滴定分数为时的电位为，化学计量点电位为，电位突跃范围是。

6.以二甲酚橙(XO)为指示剂在六亚甲基四胺缓冲溶液中用Zn2+滴定EDTA，终点时溶液颜色由_________变为__________。

7.某溶液含Fe3+10mg，用等体积的有机溶剂萃取一次后，该溶液中剩余，则Fe3+在两相中的分配比= 。

8.容量分析法中滴定方式有, , 和。

与Na2S2O3的反应式为。

10.以波长为横坐标，吸光度为纵坐标，测量某物质对不同波长光的吸收程度，所获得的曲线称谓；光吸收最大处的波长叫做，可用符号表示。

[11.紫外可见分光光度计主要由, , , 四部分组成.12.桑德尔灵敏度以符号表示,等于；桑德尔灵敏度与溶液浓度关，与波长关。

13.在纸色谱分离中，是固定相。

14..定量分析过程包括 , ,, 和。

二、简答题（每小题4分，共20 分，答在所留空白处）1.什么是基准物质什么是标准溶液}2.分别简单阐述酸碱滴定指示剂,络合滴定指示剂, 氧化还原滴定指示剂和沉淀滴定指示剂指示滴定终点的原理.3.在进行络合滴定时,为什么要加入缓冲溶液控制滴定体系保持一定的pH4.吸光光度法中测量条件的选择应注意哪几点5. 分析化学中常用的分离和富集方法有哪些(回答不能少于8种方法)三、分析方法设计（共15分，写在答题纸上）1. 设计测定含有中性杂质的Na2CO3与Na3PO4混合物中二组分质量分数的分析方案。

2004—2005学年下学期第一次四校联考英语试卷2005年3月24日第Ⅰ卷一、单项选择1. The_______ is just around the corner and you won’t miss it .A. bicycle’s shopB. bicycle shopC. bicycles shopD. bicycles’ shop2. -----I hear the workers in this factory get paid by ______week.------Correct, and most of then get about 300yuan______week.A. ×, aB. the, ×C. a, theD. the, a3. ------shall we go to see a film or play computer games?--------_______I’d like to go sightseeing around the lake.A. NeitherB. EitherC. BothD. None4. The medicine is to be taken______.A. three time a dayB. a day three timesC. three times a dayD. a day three time5. ------Have you finished your report yet?-------No, I’ll finish in ______ten minutes.A. anotherB. otherC. moreD. less6. This question is of the _______importance of all.A. lessB. leastC. fewerD. fewest7. She usually goes to school _______ bus; but sometimes she goes to school _______ a taxi.A. in; inB. by; byC. in; byD. by; in8. When you read the book, you’d better make a mark ______ you have any questions.A. at whichB. at whereC. the place whereD. where9. If you _______succeed, you must work as hard as you can.A. willB. are toC. is goingD. should10. ------Has the doctor arrived yet?-------No, she ________an hour ago.A. has to comeB. ought to have comeC. should comeD. used to come11. Are all Chinese textbooks _______in your _______house?A. publishing; publishingB. published; publishedC. publishing; publishedD. published; publishing12. If we ______, we won’t get tired.A. to take driving by turnsB. drive in turnsC. take each turns drivingD. take turns driving13. When and where to have the next discussion ________yet?A. has not decidedB. is not decidedC. have not decidedD. are not decided14. Only by doing the work themselves, ________.A. the students will get experienceB. the students will be sure to get experienceC. will the students get experienceD. will be the students sure to get experience15. ------it looks as if a storm is coming up.-------- Yes, _______.A. it certainly doesB. it certainly isC. it looks soD. it is coming16. ------ can you work out this difficult exercise?-------- Though difficult, I still think it ______my ability.A. withoutB. withinC. beyondD. inside17. As soon as the suggestion was ______, people showed great interest in it.A. put outB. put upC. put forwardD. put on18. With its goal _______the first class of the world, the university is now trying its best.A. aimed atB. aiming atC. to aim atD. aim at19. The great success, ________by different-field scientists hard working for years greatly encourages the whole country.A. achievingB. achievedC. was achievedD. to achieve20. ------where ______ Margaret have put the empty bottles?-------- She ________ them away. They must be somewhere.A. Can; can’ t have thrownB. must; needn’ tC. must; must have thrownD. can; must throw21. -------What would you like to say about your last trip through the desert?------Nothing _______more important than water.A. must have beenB. could have beenC. might beD. is22. Was it at the crossing ________the accident happened?A. at whichB. whereC. thatD. there23. I can hardly imagine Peter _______across the Atlantic Ocean in five days.A. sailB. to sailC. sailingD. to have sailed24. The mountains covers about seven square kilometers, with its peaks_____.A. ranging between1,500 meters high and 3,300metres high.B. range from 1,500 meters high to 3,300 meters high.C. ranged between 1,500metres high and 3,300 meters high.D. ranging both 1,500 meters high and 3,300 meters high.25. Although the government has tried its best to improve peasants’lives, they are still at the _______of the society.A. floorB. bottomC. topD. end二、完型填空（每小题1.5分，共20分，满分30分）I’ve really got to do something to lose weight because I’m getting much too fat. I wasn’t _____about it until I went to see the doctor. She told me that I’d _____have a heart attack______ I started eating less. She said, “When you are on ______you have to resist the temptation to eat even though you feel ______. This may be very hard to do and you certainly need a lot of ______to succeed.”So , I’m going to a ______farm for a month where I won’t be able to ______much and where I’ll have to ______my diet. They will all also made me take plenty of ______, which won’t do me any ______either. Both the diet and the exercise will help me to lose ______and feel healthier. People say that health farms are like _____ where every one is ______up and given carrot juice and lettuce when really wants a big ______. In fact, that’s exactly the kind of discipline I ______,because whenever I see someone having a ______in a TV program, I feel like a drink myself and it’s ______cigarettes and food. ______me luck; when you see me again, I’ll be so slim that you won’t ______ me.26. A. afraid B. worried C. surprise D. pleased27. A. possibly B. likely C. probably D. perhaps28. A. even if B. until C. unless D. if29. A. holiday B. business C. trip D. diet30. A. unhappy B. hungry C. angry D. sad31. A. will power B. energy C. fire D. money32. A. large B. green C. health D. animal33. A. sleep B. do C. work D. eat34. A. stick to B. depend on C. feed on D. devote to35. A. water B. fresh air C. exercise D. deep breath36. A. good B. harm C. favour D. help37. A. heart B. weigh C. temper D. sigh38. A. hospital B. school C. office D. prisons39. A. lock B. held C. taken D. brought40. A. bread B. apple C. meal D. chicken41. A. hate B. need C. like D. do42. A. meal B. nest C. walk D. drink43. A. the same with B. opposite to C. different from D. Whit44. A. Expert B. Hope C. Give D. Whit45. A. scold B. recognize C. praise D. punish三、阅读理解（每小题2分，共20小题）AOn May 21,1999,some American scientists were working at the computers to look forinformation they needed. Suddenly they saw a lot of very bright red spots crossing the computers’screens. At the same time the computers were working much slower. To find out what was happening ,they stopped their work to check some parts of the computers. To their horror, they found out that most of their stored information was got rid of by computer viruses (病毒)! Obviously all these computers had been infected by computer viruses.It is said that the computer viruses were made by two or three Philippine young men fond of playing tricks. They all had excellent education. They created the viruses just to show their intelligence (才智) . The kind of computer virus is named “I Love You” Virus. This virus can hide in computers for a long time .when the time comes they will attack the computers by lowering the important functions (功能), damaging their normal programs or even getting rid of a great deal of information which operators of the computers often use of store .What’s worse, it still can reproduce itself in great quantities within a short time.We have come to know that “I Love You” Virus often attacks computers on Mondays and that it is spreading to many computers in the world. Among the countries that suffered computer viruses recent years are Britain , Australia, Switzerland and the U.S. Those who made the computer viruses have been found out slowly and carefully. But till now, how to get rid of the terrible viruses remains a problem.46. Two or three Philippine young men created the computer viruses to _______.A. damage the computersB. test their ability quicklyC. tell the world that they were intelligentD. play a trick on operators of the computers47. According to the passage, computer viruses seem to ________.A. have been in nature for yearsB. exist in any computersC. be able to be got rid of in the near futureD. be difficult to get rid of at present48. The most serious damage caused by the viruses is that _________.A. the computer’s functions are loweredB. the normal programs are damagedC. most of the information stored in the computers is goneD. the computers infected by the viruses can no longer be used49. According to the passage , which of the following is true?A. Scientists are trying to find a way to get rid of the virusesB. The viruses will come to the new computer after staying in the old one for some timeC. Last year four countries found their computers were infected by viruses.D. The “I Love You” Virus is a great harm to human healthBHave you ever used a typewriter? If not , you’ve surely seen one .This useful machine has a most interesting history.Although you may think that the typewriter is a modern invention, the idea goes as far back as the early 1700s. It was then, in 1714, that England’s Queen Anne granted Henry Mill the first patent(专利) for a machine that typed letters. Called An Artificial Method For Impressing Letters, the machine remained just a design on paper.Various other typing machines were invented over the next hundred years or so. However, all of them had the same problem: they required more time to use than writing the same material by hand. Things improved a little around 1829 when an American named William Burt invented a machine called the desired letter. He also pressed a bar to link the paper. The machine printed letters well, but it had a top speed of only five words a minute.Finally, in 1874 , a more practical machine was introduced to the public. Invented by an American Christopher Sholes and some of his companions, the machine was set up by E Remington and Sons and called the “Remington Model No.1”. It was the first typewriter to have the kind of typewriter keyboard we know today.You may have a look at the typewriter keyboard and wonder about the strange arrangement of letters. The arrangement, strangely enough, has nothing to do with making typing easier of faster. As a matter of fact, the keys were so arranged to force typists to type lower, Typing too fast caught the keys of Remington I pressed together. They still follow this early arrangement of letters of the keyboard.50. What does the writer mainly talk about in this passage?A. What a typewriter is.B. How the typewriter was invented.C. The function and use of a typewriter.D. Remington and his invention51. “An Artificial Machine” was_________.A. the first typewriter that was made by Henry MillB. highly praised by England’s Queen as the first typewriterC. hardly produces at allD. made as the first typewriter in 171452. The first typewriters were made_________.A. from 1700 to 1714B. in the eighteenth centuryC. in the nineteenth centuryD. in the twentieth century53. That the keyboard was designed so as today is because ________.A. the inventor wanted to make typing easier than writingB. the inventor meant to prevent the keys from being pressed togetherC. that it was arranged strangelyD. it has nothing to do with RemingtonCRichard Gray was a famous explorer (勘探者). He was also a millionaire. He had visited every country in the world. He had crossed Antarctica, flown across the Atlantic by balloon, and climbed Mount Everest. Last year he decided to walk across Death Valley, the hottest place on Earth. He walked for days over the hot desert sand. One night he found the camp (宿营地) where he had been the night before, Gray had walked in a circle. He was lost.Two days later he had drunk all his water. He couldn’t walk. He crawled to the top of a sand dune (沙丘),and there he saw a man. The man was wearing smart, clean trousers, clean trousers, a whiteshirt and a tie. Gray crawled over to him.“Water…water…” he said.“I’m terribly sorry, old boy,” replied the man, “but I haven’t got any water with me.”“help me!” shouted Gray, “I’m a rich man…a millionaire…I’ll give you anything.”“that’s very nice of you, old boy,” said the man. “Look, I can’t give you any water, but would you like to buy my tie?”“A tie? Of course not!” screamed Gray, and crawled away, He crawled slowly up the next sand dune. His mouth was full of sand. His lips were cracked (破裂) and dry. He couldn’t breathe. He reached the top of the dune and there he saw a huge good hotel Girls were swimming in the large swimming pool. Beautiful fountains were all around the hotel.“Is it a mirage (幻景)?” he thought , “Am I dying?” He stood up and staggered (蹒跚) down the dune.A waiter in a shining white uniform came out of the door .“Water…water…a bath! Food !”screamed Gray.“I’m sorry ,you can’t come into this hotel,” said the waiter.“Why not? I’ve got plenty of money…I’m a millionaire.”“Ah,” replied the waiter, “but you aren’t wearing a tie!”54. The famous explorer________.A. had crossed Antarctica and the Atlantic by balloonB. had traveled all over the worldC. had walked across Death V alleyD. had ever been a millionaire55. Death V alley is ________.A. a valley where people may die from loss of waterB. a dead place where people dare not goC. a terribly hot valley where people may die of heatD. a place’s name56. Two days later Richard Gray_________.A. was lost in a circleB. was drunkC. began to search for water in the desertD. crawled to the top of a dune to see a man57. Gray saw __________from the top of the next dune.A. a large good hotelB. many swimming girlsC. a lot of drinking waterD. a beautiful mirageDMr Luk: Now tell me something about yourself and why you applied (申请) for this job.David: I left school three months ago. My results were fairly good but I have to support my family now. My father has recently stopped working because he is too old. My parents need the money to educate my younger brother and sister.Mr Luk: I see. Have you had any experience already?David: I worked in a radio factory for two months.(David pauses.)Mr Luk: That’s very short time, isn’t it?David: Oh, yes. The factory wanted extra people for their busy season.Mr Luk: I understand. Why do you want to do this job?David: My wish is to become a skilled technician (技术员).Mr Luk: You must understand that this is not easy work and the hours are long. You may have to do shift work (轮班)and work beyond the usual time, too. You would start from the very beginning.David: Will I be trained here?Mr Luk: Partly, if you pass our tests, you will be able to go to technical school classes twice a week. The tests are held after you have been here for two months. Then we can check if you are suitable for the job.David: That’s fine. I’ll make sure that I pass.Mr Luk: All right. I’ll give you a chance. My secretary will tell you whom to see when you start. You can start work on the first of next month. Is that all right.David: Yes, and thank you very much indeed.58. Why did David go to see Mr Luk?A. He had read about him in a newspaper.B. He had applied for a job in Mr Luk’s company.C. He wanted to ask Mr Luk if there were any jobs in his companyD. He wanted to tell Mr Luk about his family.59. David had to help to support his family because______A. he had left schoolB. he had lost his job in the radio factoryC. he was old enough to start workingD. his father was no longer working60. How did David feel about the news of tests?A. He thought he would be able to avoid taking themB. He did not seem worried about themC. He was worried at first but he soon became sure of himselfD. He did not understand what Mr Luk meant61. Mr Luk did NOT warn David that_________A. he might have to work beyond the usual timeB. he would have to pass testsC. he would have to learn to driveD. the job was not easyEJuly 16th was a bad day for Mr. Arthur Johnson. In the morning, he set off from his home in Santa Barbara, California. It was the start of his summer holydays and he decided to visit friends at Las Vegas，then he hoped to go fishing in Lake Mead, from Las Vegas.Johnson’s troubles started while he was driving happily across the Mojave Desert. His car went wrong and he tried to repair it .Then, to make matters worse, his attempts to start the car drained (耗尽)the battery (电池) and left it useless. After Johnson had waited an hour in the hot sun, a Canadian driver, John Williams, stopped and tried to help him. When both men failed, Williams promised to telephone a workshop to ask it to send a truck to pull the car away and repair its fuel pump (燃没泵).Johnson left the keys in his car and sat in the shade of a large tree. Soon he fell asleep. While he was sleeping, a repair truck arrived from San Pedro (the nearest town) and pulled his car away. Later on, Johnson woke up and thought that somebody had stolen his car. He started to walk back towards San Pedro but a police car stopped him to find out why he was walking in the desert.Johnson looked like a man wanted (通辑的) in Los Angeles for robbery, so the police detained (拘留) him at San Pedro for the right. The next day, Johnson telephoned his friends in Los Angeles. They drove to San Pedro and made the police believe that Johnson was a harmless salesman, so they set him free.62. Johnson’s car went wrong_______.A. after he had passed San PedroB. Before he left Santa BarbaraC. when he was getting neat the Mojave DesertD. not far from Los Angeles63. Which way did Williams go when he left Johnson?A. He drove on to Las Vegas.B. He went back to Los AngelesC. Perhaps he went to San PedroD. He continued his journey to Canada64. How did Williams help Johnson?A. He persuaded the police to set him freeB. He failed to repair his carC. He drove Johnson into San PedroD. He arranged to have his car repaired65. Which is the best title of this passage?A. A Bad Day for Arthur JohnsonB. An Interesting CarC. A Pleasant Trip in the DesertD. A Well-planned Journey第Ⅱ卷四、单词拼写（共10小题，每题1分，满分10分）A：Read each of the following sentences and try to guess the missing word. The first letter is given.1. Mr Zhu made a v around the world on very Little money.2. When will humans put a stop to war and have p peace.3. My father is a b . He sells meat.4. He is b as a scientist; but at home he is like a baby.5. The dog was the man’s only c in his old age.B: Complete the sentences with words that have the opposite meaning of the underlined words.6. Although most of us are just ordinary people, every one of us is .7. All metals become liquid at high temperatures, and turn again when cooing off.8. Do you think a full bottle of water will or sink.9. As the water supply is , water prices are expected to keep increasing.10. It’s wrong to doubt his honesty. I him.五、填空（共10小题，每题1分，满分10分）Choose the right words and use their correct form to fill I n the blanks. Some may be used more______as ______ a man to the moon. When ancient humans Learn to use stone ______ and make fire, it meant the beginning of ________ society. Later discoveries------- bronze, iron, steam, electricity, to name a few-------continued the development of society and ________history. So _______were these achievements that we often divide human________ into time ______named after the ________technology of the time; the stone Age, the Bronze Age, the iron Age and so on.六、短文改错（共10小题，每小题1分，满分10分）Clocks, as we know, were probable developed 1._________By very religious people in Europe in thirteenth century. 2.________They need to know the exact time so that they could pray 3._________at the right time. During the 1700s, people had clocks 4._________and watches that were accurate to the minute, Some 5._________clocks were beautiful. The moved parts in them were not 6._________simple, Some had figures of people of animals who moved 7.__________on the hour and quarter hour. Others played music. The 8._________movement of the parts is beautiful to watch it if they are 9._________clearly or when you open these clocks. 10_________七、书面表达（满分25分）某外资公司招聘外语人才。

2005年12月24日大学英语四级考试A卷真题含答案Listening Comprehension (20 minutes)Part 1 Section A1 A) See a doctorB) Stay in bed for a few days.C) Get treatment in a better hospital.D) Make a phone call to the doctor.2 A) The 2:00 train will arrive earlier.B)The 2:30 train has a dining car.C) The woman prefers to take the 2:30 train.D) they are gong to have some fast food on the train.3 A) She has been longing to attend Harvard University.B)She’ll consider the man’s suggestion carefully.C)She has f inished her project with Dr. Garcia’s help.D)She’ll consult Dr. Garcia about entering graduate school.4 A)Alice didn’t seem to be nervous during her speech.B)Alice needs more training in making public speeches.C)The man can hardly understand Alice’s presentation.D)The man didn’t think highly of Alice’s presentation.5 A)It’s worse than 30 years ago.B)It remains almost the same as before.C)There are more extremes in the weather.D)There has been a significant rise in temperature.6 A)At a publishing house.B)At a bookstore.C)In a reading roomD)In Prof. Jordan’s office7 A)The man can stay in her brother’s apartment.B)Her brother can help the man find a cheaper hotel.C) Her brother can find an apartment for the man.D)The man should have booked a less expensive hotel.8 A)Priority should be given to listening.B)It’s most helpful to read English newspapers every day.C) It’s more effective to combine listening with reading.D)Reading should come before listening.9 A)It can help solve complex problems.B)It will most likely prove ineffectiveC)It is a new weapon against terrorists.D)It will help detect all kinds of liars.10 A)Help the company recruit graduate students.B)Visit the electronics company next week.C)Get apart-time job on campus before graduation.D)Apply for a job in the electronics companySection BPassage OneQuestions 11 to 13 are based on the passage you have just heard.11 A)It ha been proven to be the best pain-killer.B)It is a possible cure for heart disease.C)It can help lower high body temperature effectively.D)It reduces the chance of death for heart surgery patients.12 A)It keeps blood vessels from being blocked.B)It speeds up their recovery after surgery.C)It in creases the blood flow to the heart.D)It adjusts their blood pressure.13 A)It is harmful to heart surgery patients with stomach bleeding.B)It should not be taken by heart surgery patients before the operation.C)It will have considerable side effects if taken in large doses.D)It should not be given to patients immediately after the operation.Passage TwoQuestions 14 to 16 are based on the passage you have just heard.14 A)They strongly believe in family rules.B)They are very likely to succeed in life.C)They tend to take responsibility for themselvesD)They are in the habit of obeying their parents.15 A)They grow up to be funny and charming.B)They often have a poor sense of direction.C)They get less attention from their parents.D)They tend to be smart and strong-willed.16 A)They usually don’t follow family rules.B)They don’t like to take chances in their lives.C)They are less likely to be successful in life.D)They tend to believe in their parent’s ideas.Passage ThreeQuestions 17 to 20 are based on the passage you have just heard.17 A)They wanted to follow his example.B)They fully supported his undertaking.C)They were puzzled by his decision.D)They were afraid he wasn’t fully prepared.18 A)It is more exciting than space travel.B)It is much cheaper than space travel.C)It is much safer than space travel.D)It is less time-consuming than space travel.19 A)They both attract scientists’ attentionB)They can both be quite challengingC)They are both thought-provoking.D)They may both lead to surprising findings.20 A)To show how simple the mechanical aids for diving can be.B)To provide an excuse for his changeable character.C)To explore the philosophical issues of space travel.D)To explain why he took up underwater exploration.Part II Reading comprehension (35 minutes)Passage OneQuestions 21 to 25 are based on the following passage.Just five one-hundredths of an inch thick, light golden in color and with a perfect “saddle curl,” the Lay’s potato chip seems an unlikely weapon for global domination. But its maker. Frito-Lay. Thinks otherwise.” Potato chips are a snack food for the world,” said Salman Amin, the company’s head of global marketing. Amin believes there is no corner of the world that can resist the charms of a Frito-Lay potato chip.Frito-Lay is the biggest snack maker in America. owned by PepsiCo. And accounts for over half of the parent company’s $3 billion annual profits. But the U.S. snack food market is largely saturated, and to grow. the company has to look overseas.Its strategy rests on two beliefs: first a global product offers economies of scale with which local brands cannot compete. And second, consumers in the 21st century are drawn to “global” as a concept. ”Global” does not mean pr oducts that are consciously identified as American, but ones than consumes-especially youngpeople-see as part of a modem, innovative(创新的)world in which people are linked across cultures by shared beliefs and tastes. Potato chips are an American invention, but most Chinese, for instance, do not know than Frito-Lay is an American company. Instead, Riskey, the company’s research and development head, would hope they associate the brand with the new world of global communications and business. With brand perception a crucial factor, Riskey ordered a redesign of the Frito-Lay logo(标识).The logo, along with the company’s long-held marketing image of the “irresistibility” of its chips. would help facilitate the company’s global expansion.The executives acknowledge that they try to swing national eating habits to a food created in America, but they deny that amounts to economic imperialism. Rater, they see Frito-Lay as spreading the benefits of free enterprise across the world. “We’re making products in those countries, we’re adapting them t o the tastes of those countries, building businesses and employing people and changing lives,” said Steve Reinemund, PepsiCo’s chief executive.21.It is the belief of Frito-Lay’s head of global marking that_____.A) Potato chips can hardly be used as a weapon to dominate the world marketB) Their company must find new ways to promote domestic sales.C) The light golden color enhances the charm of their company’s potato chipsD) People the world over enjoy eating their company’s potato chips22.What do we learn about Frito-Lay from Paragraph 2?A) Its products use to be popular among overseas consumers.B) Its expansion has caused fierce competition in the snack marker.C) It gives half of its annual profits to its parent company.D) It needs to turn to the word market for development.23.One of the assumptions on which Frito-Lay bases its development strategy is that_____.A)consumers worldwide today are attracted by global brandsB)local brands cannot compete successfully with American brandsC)products suiting Chinese consumers’ needs bring more profitsD)products identified as American will have promising market value24.Why did Riskey have the Frito-Lay logo redesigned?A)To suit changing tastes of young consumers.B)To promote the company‘s strategy of globalization.C)To change the company’s long-held marketing image.D)To compete with other American chip producers.25.Frito-Lay‘s executives claim that the promoting of American food in the international market_____.A)won‘t affect the eating habits of the local peopleB)will lead to economic imperialismC)will be in the interest of the local peopleD)won’t spoil the taste of their chipsPassage TwoQuestion 26 to 30 are based on the following passage.In communities north of Denver, residents are pitching in to help teachers and administrators as the Vrain school District tries to solve a $13.8 million budget shortage blamed onmismanagement. ”We’re worried about our teachers and principals, and we really don’t want to lose them because of this,” one parent sail. “If we can help ease their financial burden, we will. ”Teachers are grateful, but know it may be years before the district is solvent(有综合能力的). They feel really good about the parent support, but they realize it’s impossible for then to solve this problem.The 22,000-student district discovered the shortage last month. “It’s extraordinary. Nobody would have imagined something happening like this at this level,” said State Treasurer Mike Coffman. Coffman and district officials last week agreed on a state emergency plan freeing yp a $9.8 million loan that enabled the payroll(工资单) to be met for 2,700 teachers and staff in time for the holidays. District officials also took $1.7 million from student-activity accounts its 38schools.At Coffman’s request, the District Attorney has begun investigating the district’s finances. Cof fman says he wants to know whether district officials hid the budget shortage until after the November election., when voters approved a $212 million bond issue for schools. In Frederick, students’ parents are buying classroom supplies and offering to pay for groceries and utilities to keep first-year teachers and principals in their jobs.Some $36,000 has been raised in donations from Safeway. A Chevrolet dealership donated $10,000 and forgave the district’s $10,750 bill for renting the driver educating cars. IBM contributed 4,500 packs of paper.“We employ thousands of people in this community,” said Mitch Carson, a hospital chief executive, who helped raise funds. “We have children in the school, and we see how they could be affected.”At Creek High School, three students started a website that displays newspaper articles, district information and an email forum(论坛)。

农业大学期末考试试卷（A卷）2005学年第2学期考试科目：大学计算机基础考试类型：（闭卷）考试时间：120分钟学号姓名年级专业考生注意：1、答案必须分别写在“机读卡”和“答题卡”上，写在试卷上不得分。

2、必须在机读卡和答题卡上正确填写班级、学号、姓名等内容，否则没有考试成绩。

3、在机读卡的学生代号区只填写学号后10位。

一、判断题（在机读卡上答题，正确选A，错误选B，每小题0.5分，共20分）1.被称作“裸机”的计算机是指没有硬盘的微机。

2.对软盘进行全面格式化也不一定能消除软盘上的计算机病毒。

3.计算机网络协议是一组通信规则或约定。

4.网桥可用于将局域网连接到互联网上。

5.目前普遍使用的微型计算机所采用的逻辑元件是大规模和超大规模集成电路。

6.操作系统的所有程序都必须常驻内存。

7.所谓存储系统的层次结构，是把各种不同存储容量、不同存储速度的存储设备，按照一定的体系结构组织起来，是将所存放的程序和数据按层次分布在各存储设备中。

8.光盘存储器是利用涂抹在盘面上的磁性材料作为信息载体的。

9.计算机能够直接识别和处理的语言是机器语言。

10.逻辑运算是指对因果关系进行分析的一种运算，运算是按位进行的。

11.计算机的硬件和软件是互相依存、互相支持的，硬件的某些功能可以用软件来完成，而软件的某些功能也可以用硬件来实现。

12.EGA、VGA、SVGA标志着显示器的不同规格和性能。

13.外存储器（如磁盘）上的信息可以直接进入CPU被处理。

14.CAD是计算机的一个主要应用领域，它的含义是计算机辅助设计。

15.在数据的浮点表示法中，表示有效数字的是基数。

16.程序是动态的，进程是静态的。

17.计算机信息系统安全不包括人员安全。

18.在计算机中，所有的信息如数字、符号、以及图形等都是用电子元件的不同状态表示的。

19.二进制的加法和减法运算是按位进行的。

20.目前C/S模式已经完全将B/S模式取代，这也预示了网络时代的到来。

2004—2005学年下学期第一次四校联考英语试卷2005年3月24日第Ⅰ卷一、单项选择1. The_______ is just around the corner and you won’t miss it .A. bicycle’s shopB. bicycle shopC. bicycles shopD. bicycles’ shop2. -----I hear the workers in this factory get paid by ______week.------Correct, and most of then get about 300yuan______week.A. ×, aB. the, ×C. a, theD. the, a3. ------shall we go to see a film or play computer games?--------_______I’d like to go sightseeing around the lake.A. NeitherB. EitherC. BothD. None4. The medicine is to be taken______.A. three time a dayB. a day three timesC. three times a dayD. a day three time5. ------Have you finished your report yet?-------No, I’ll finish in ______ten minutes.A. anotherB. otherC. moreD. less6. This question is of the _______importance of all.A. lessB. leastC. fewerD. fewest7. She usually goes to school _______ bus; but sometimes she goes to school _______ a taxi.A. in; inB. by; byC. in; byD. by; in8. When you read the book, you’d better make a mark ______ you have any questions.A. at whichB. at whereC. the place whereD. where9. If you _______succeed, you must work as hard as you can.A. willB. are toC. is goingD. should10. ------Has the doctor arrived yet?-------No, she ________an hour ago.A. has to comeB. ought to have comeC. should comeD. used to come11. Are all Chinese textbooks _______in your _______house?A. publishing; publishingB. published; publishedC. publishing; publishedD. published; publishing12. If we ______, we won’t get tired.A. to take driving by turnsB. drive in turnsC. take each turns drivingD. take turns driving13. When and where to have the next discussion ________yet?A. has not decidedB. is not decidedC. have not decidedD. are not decided14. Only by doing the work themselves, ________.A. the students will get experienceB. the students will be sure to get experienceC. will the students get experienceD. will be the students sure to get experience15. ------it looks as if a storm is coming up.-------- Yes, _______.A. it certainly doesB. it certainly isC. it looks soD. it is coming16. ------ can you work out this difficult exercise?-------- Though difficult, I still think it ______my ability.A. withoutB. withinC. beyondD. inside17. As soon as the suggestion was ______, people showed great interest in it.A. put outB. put upC. put forwardD. put on18. With its goal _______the first class of the world, the university is now trying its best.A. aimed atB. aiming atC. to aim atD. aim at19. The great success, ________by different-field scientists hard working for years greatly encourages the whole country.A. achievingB. achievedC. was achievedD. to achieve20. ------where ______ Margaret have put the empty bottles?-------- She ________ them away. They must be somewhere.A. Can; can’ t have thrownB. must; needn’ tC. must; must have thrownD. can; must throw21. -------What would you like to say about your last trip through the desert?------Nothing _______more important than water.A. must have beenB. could have beenC. might beD. is22. Was it at the crossing ________the accident happened?A. at whichB. whereC. thatD. there23. I can hardly imagine Peter _______across the Atlantic Ocean in five days.A. sailB. to sailC. sailingD. to have sailed24. The mountains covers about seven square kilometers, with its peaks_____.A. ranging between1,500 meters high and 3,300metres high.B. range from 1,500 meters high to 3,300 meters high.C. ranged between 1,500metres high and 3,300 meters high.D. ranging both 1,500 meters high and 3,300 meters high.25. Although the government has tried its best to improve peasants’lives, they are still at the _______of the society.A. floorB. bottomC. topD. end二、完型填空（每小题1.5分，共20分，满分30分）I’ve really got to do something to lose weight because I’m getting much too fat. I wasn’t _____about it until I went to see the doctor. She told me that I’d _____have a heart attack______ I started eating less. She said, “When you are on ______you have to resist the temptation to eat even though you feel ______. This may be very hard to do and you certainly need a lot of ______to succeed.”So , I’m going to a ______farm for a month where I won’t be able to ______much and where I’ll have to ______my diet. They will all also made me take plenty of ______, which won’t do me any ______either. Both the diet and the exercise will help me to lose ______and feel healthier. People say that health farms are like _____ where every one is ______up and given carrot juice and lettuce when really wants a big ______. In fact, that’s exactly the kind of discipline I ______,because whenever I see someone having a ______in a TV program, I feel like a drink myself and it’s ______cigarettes and food. ______me luck; when you see me again, I’ll be so slim that you won’t ______ me.26. A. afraid B. worried C. surprise D. pleased27. A. possibly B. likely C. probably D. perhaps28. A. even if B. until C. unless D. if29. A. holiday B. business C. trip D. diet30. A. unhappy B. hungry C. angry D. sad31. A. will power B. energy C. fire D. money32. A. large B. green C. health D. animal33. A. sleep B. do C. work D. eat34. A. stick to B. depend on C. feed on D. devote to35. A. water B. fresh air C. exercise D. deep breath36. A. good B. harm C. favour D. help37. A. heart B. weigh C. temper D. sigh38. A. hospital B. school C. office D. prisons39. A. lock B. held C. taken D. brought40. A. bread B. apple C. meal D. chicken41. A. hate B. need C. like D. do42. A. meal B. nest C. walk D. drink43. A. the same with B. opposite to C. different from D. Whit44. A. Expert B. Hope C. Give D. Whit45. A. scold B. recognize C. praise D. punish三、阅读理解（每小题2分，共20小题）AOn May 21,1999,some American scientists were working at the computers to look for information they needed. Suddenly they saw a lot of very bright red spots crossing the computers’screens. At the same time the computers were working much slower. To find out what was happening ,they stopped their work to check some parts of the computers. To their horror, they found out that most of their stored information was got rid of by computer viruses (病毒)! Obviously all these computers had been infected by computer viruses.It is said that the computer viruses were made by two or three Philippine young men fond of playing tricks. They all had excellent education. They created the viruses just to show their intelligence (才智) . The kind of computer virus is named “I Love You” Virus. This virus can hide in computers for a long time .when the time comes they will attack the computers by lowering the important functions (功能), damaging their normal programs or even getting rid of a great deal of information which operators of the computers often use of store .What’s worse, it still can reproduce itself in great quantities within a short time.We have come to know that “I Love You” Virus often attacks computers on Mondays and that it is spreading to many computers in the world. Among the countries that suffered computer viruses recent years are Britain , Australia, Switzerland and the U.S. Those who made the computer viruses have been found out slowly and carefully. But till now, how to get rid of the terrible viruses remains a problem.46. Two or three Philippine young men created the computer viruses to _______.A. damage the computersB. test their ability quicklyC. tell the world that they were intelligentD. play a trick on operators of the computers47. According to the passage, computer viruses seem to ________.A. have been in nature for yearsB. exist in any computersC. be able to be got rid of in the near futureD. be difficult to get rid of at present48. The most serious damage caused by the viruses is that _________.A. the computer’s functions are loweredB. the normal programs are damagedC. most of the information stored in the computers is goneD. the computers infected by the viruses can no longer be used49. According to the passage , which of the following is true?A. Scientists are trying to find a way to get rid of the virusesB. The viruses will come to the new computer after staying in the old one for some timeC. Last year four countries found their computers were infected by viruses.D. The “I Love You” Virus is a great harm to human healthBHave you ever used a typewriter? If not , you’ve surely seen one .This useful machine has a most interesting history.Although you may think that the typewriter is a modern invention, the idea goes as far back as the early 1700s. It was then, in 1714, that England’s Queen Anne granted Henry Mill the first patent (专利) for a machine that typed letters. Called An Artificial Method For Impressing Letters, the machine remained just a design on paper.Various other typing machines were invented over the next hundred years or so. However, all of them had the same problem: they required more time to use than writing the same material by hand. Things improved a little around 1829 when an American named William Burt invented a machine called the desired letter. He also pressed a bar to link the paper. The machine printed letters well, but it had a top speed of only five words a minute.Finally, in 1874 , a more practical machine was introduced to the public. Invented by an American Christopher Sholes and some of his companions, the machine was set up by E Remington and Sons and called the “Remington Model No.1”. It was the first typewriter to have the kind of typewriter keyboard we know today.You may have a look at the typewriter keyboard and wonder about the strange arrangement of letters. The arrangement, strangely enough, has nothing to do with making typing easier of faster. As a matter of fact, the keys were so arranged to force typists to type lower, Typing too fast caught the keys of Remington I pressed together. They still follow this early arrangement of letters of the keyboard.50. What does the writer mainly talk about in this passage?A. What a typewriter is.B. How the typewriter was invented.C. The function and use of a typewriter.D. Remington and his invention51. “An Artificial Machine” was_________.A. the first typewriter that was made by Henry MillB. highly praised by England’s Queen as the first typewriterC. hardly produces at allD. made as the first typewriter in 171452. The first typewriters were made_________.A. from 1700 to 1714B. in the eighteenth centuryC. in the nineteenth centuryD. in the twentieth century53. That the keyboard was designed so as today is because ________.A. the inventor wanted to make typing easier than writingB. the inventor meant to prevent the keys from being pressed togetherC. that it was arranged strangelyD. it has nothing to do with RemingtonCRichard Gray was a famous explorer (勘探者). He was also a millionaire. He had visited every country in the world. He had crossed Antarctica, flown across the Atlantic by balloon, and climbedMount Everest. Last year he decided to walk across Death Valley, the hottest place on Earth. He walked for days over the hot desert sand. One night he found the camp (宿营地) where he had been the night before, Gray had walked in a circle. He was lost.Two days later he had drunk all his water. He couldn’t walk. He crawled to the top of a sand dune (沙丘),and there he saw a man. The man was wearing smart, clean trousers, clean trousers, a white shirt and a tie. Gray crawled over to him.“Water…water…” he said.“I’m terribly sorry, old boy,” replied the man, “but I haven’t got any water with me.”“help me!” shouted Gray, “I’m a rich man…a millionaire…I’ll give you anything.”“that’s very nice of you, old boy,” said the man. “Look, I can’t give you any water, but would you like to buy my tie?”“A tie? Of course not!” screamed Gray, and crawled away, He crawled slowly up the next sand dune. His mouth was full of sand. His lips were cracked (破裂) and dry. He couldn’t breathe. He reached the top of the dune and there he saw a huge good hotel Girls were swimming in the large swimming pool. Beautiful fountains were all around the hotel.“Is it a mirage (幻景)?” he thought , “Am I dying?” He stood up and staggered (蹒跚) down the dune.A waiter in a shining white uniform came out of the door .“Water…water…a bath! Food !”screamed Gray.“I’m sorry ,you can’t come into this hotel,” said the waiter.“Why not? I’ve got plenty of money…I’m a millionaire.”“Ah,” replied the waiter, “but you aren’t wearing a tie!”54. The famous explorer________.A. had crossed Antarctica and the Atlantic by balloonB. had traveled all over the worldC. had walked across Death V alleyD. had ever been a millionaire55. Death V alley is ________.A. a valley where people may die from loss of waterB. a dead place where people dare not goC. a terribly hot valley where people may die of heatD. a place’s name56. Two days later Richard Gray_________.A. was lost in a circleB. was drunkC. began to search for water in the desertD. crawled to the top of a dune to see a man57. Gray saw __________from the top of the next dune.A. a large good hotelB. many swimming girlsC. a lot of drinking waterD. a beautiful mirageDMr Luk: Now tell me something about yourself and why you applied (申请) for this job.David: I left school three months ago. My results were fairly good but I have to support my family now. My father has recently stopped working because he is too old. My parents need the money to educate my younger brother and sister.Mr Luk: I see. Have you had any experience already?David: I worked in a radio factory for two months.(David pauses.)Mr Luk: That’s very short time, isn’t it?David: Oh, yes. The factory wanted extra people for their busy season.Mr Luk: I understand. Why do you want to do this job?David: My wish is to become a skilled technician (技术员).Mr Luk: You must understand that this is not easy work and the hours are long. You may have to do shift work (轮班)and work beyond the usual time, too. You would start from the very beginning.David: Will I be trained here?Mr Luk: Partly, if you pass our tests, you will be able to go to technical school classes twice a week. The tests are held after you have been here for two months. Then we can check if you are suitable for the job.David: That’s fine. I’ll make sure that I pass.Mr Luk: All right. I’ll give you a chance. My secretary will tell you whom to see when you start. You can start work on the first of next month. Is that all right.David: Yes, and thank you very much indeed.58. Why did David go to see Mr Luk?A. He had read about him in a newspaper.B. He had applied for a job in Mr Luk’s company.C. He wanted to ask Mr Luk if there were any jobs in his companyD. He wanted to tell Mr Luk about his family.59. David had to help to support his family because______A. he had left schoolB. he had lost his job in the radio factoryC. he was old enough to start workingD. his father was no longer working60. How did David feel about the news of tests?A. He thought he would be able to avoid taking themB. He did not seem worried about themC. He was worried at first but he soon became sure of himselfD. He did not understand what Mr Luk meant61. Mr Luk did NOT warn David that_________A. he might have to work beyond the usual timeB. he would have to pass testsC. he would have to learn to driveD. the job was not easyEJuly 16th was a bad day for Mr. Arthur Johnson. In the morning, he set off from his home inSanta Barbara, California. It was the start of his summer holydays and he decided to visit friends at Las Vegas，then he hoped to go fishing in Lake Mead, from Las Vegas.Johnson’s troubles started while he was driving happily across the Mojave Desert. His car went wrong and he tried to repair it .Then, to make matters worse, his attempts to start the car drained (耗尽)the battery (电池) and left it useless. After Johnson had waited an hour in the hot sun, a Canadian driver, John Williams, stopped and tried to help him. When both men failed, Williams promised to telephone a workshop to ask it to send a truck to pull the car away and repair its fuel pump (燃没泵).Johnson left the keys in his car and sat in the shade of a large tree. Soon he fell asleep. While he was sleeping, a repair truck arrived from San Pedro (the nearest town) and pulled his car away. Later on, Johnson woke up and thought that somebody had stolen his car. He started to walk back towards San Pedro but a police car stopped him to find out why he was walking in the desert.Johnson looked like a man wanted (通辑的) in Los Angeles for robbery, so the police detained (拘留) him at San Pedro for the right. The next day, Johnson telephoned his friends in Los Angeles. They drove to San Pedro and made the police believe that Johnson was a harmless salesman, so they set him free.62. Johnson’s car went wrong_______.A. after he had passed San PedroB. Before he left Santa BarbaraC. when he was getting neat the Mojave DesertD. not far from Los Angeles63. Which way did Williams go when he left Johnson?A. He drove on to Las Vegas.B. He went back to Los AngelesC. Perhaps he went to San PedroD. He continued his journey to Canada64. How did Williams help Johnson?A. He persuaded the police to set him freeB. He failed to repair his carC. He drove Johnson into San PedroD. He arranged to have his car repaired65. Which is the best title of this passage?A. A Bad Day for Arthur JohnsonB. An Interesting CarC. A Pleasant Trip in the DesertD. A Well-planned Journey第Ⅱ卷四、单词拼写（共10小题，每题1分，满分10分）A：Read each of the following sentences and try to guess the missing word. The first letter is given.1. Mr Zhu made a v around the world on very Little money.2. When will humans put a stop to war and have p peace.3. My father is a b . He sells meat.4. He is b as a scientist; but at home he is like a baby.5. The dog was the man’s only c in his old age.B: Complete the sentences with words that have the opposite meaning of the underlined words.6. Although most of us are just ordinary people, every one of us is .7. All metals become liquid at high temperatures, and turn again when cooing off.8. Do you think a full bottle of water will or sink.9. As the water supply is , water prices are expected to keep increasing.10. It’s wrong to doubt his honesty. I him.五、填空（共10小题，每题1分，满分10分）Choose the right words and use their correct form to fill I n the blanks. Some may be used more______as ______ a man to the moon. When ancient humans Learn to use stone ______ and make fire, it meant the beginning of ________ society. Later discoveries------- bronze, iron, steam, electricity, to name a few-------continued the development of society and ________history. So _______were these achievements that we often divide human________ into time ______named after the ________technology of the time; the stone Age, the Bronze Age, the iron Age and so on.六、短文改错（共10小题，每小题1分，满分10分）Clocks, as we know, were probable developed 1._________By very religious people in Europe in thirteenth century. 2.________They need to know the exact time so that they could pray 3._________at the right time. During the 1700s, people had clocks 4._________and watches that were accurate to the minute, Some 5._________clocks were beautiful. The moved parts in them were not 6._________simple, Some had figures of people of animals who moved 7.__________on the hour and quarter hour. Others played music. The 8._________movement of the parts is beautiful to watch it if they are 9._________clearly or when you open these clocks. 10_________七、书面表达（满分25分）某外资公司招聘外语人才。

解析几何试题山东财政学院2005—2006学年第一学期期末考试《解析几何》试卷(A )一、填空（40分，每题4分）1. 设向量{3,6,1},{1,4,5},{3,4,12},a b c =--=-=-a b c + 那么向量在上的射影为.2．设{2,1,1},{1,2,1},,a b e a b =-=-单位向量同时垂直于与那么e ＝ .3．球面的中心在点(1,3,2),-而且球面通过原点，那么该球面的方程为 . 4．点(1,1,1)到平面x+3y -2=0的距离是 . 5. 点(0,0,1)到直线z y x =+=-2121的距离是 . 6．直线的与直线21123212-+=-=-=+=-z y x z -y x 距离是 .7. 过直线?=-=-113y x y x 和点(0,2,0)的平面是 .8．准线是9122x +y =z =，母线方向是（1，2，3）的柱面方程为 .（请用x,y,z 的一个方程表示） 9．直线0y z y z x -=??=?绕轴和轴旋转所生成的旋转曲面的方程分别为和 .10．中心二次曲线346843022x xy y x y -+--+=的中心为 ,线心二次曲线44632022x xy y x y -++-+=的中心直线的方程为 . 二．已知四面体的体积V ＝5，它的三个定点为(2,1,1),(3,0,1),(2,1,3)A B C --，又知它的第四个定点D 在y 轴上，试求点D 的坐标和从定点D 所引出的高的长h.三.,,a b c d设是三个两两垂直的非零向量，试证明任意向量可表示成222a d b d c d d a b c a b c=++四试求通过点(1,0,4)M -,垂直于平面34100,x y z π-+-=：13:312x y zl +-==且与直线平行的平面方程。

五. 求过点0(1,1,1)M 且与直线50:0x y z l x y z --=??+-=?垂直相交的直线的方程。

洛基英语，中国在线英语教育领导品牌Part IV Short Answer QuestionsWe commonly think of sportsmanship in connection with athletic contests, but it also applies to individual outdoor sports. Not everyone who picks up a fishing rod or goes out with a gun is a sportsman. The sportsman first of all obeys the fish and game laws, not BECause he is liable to be punished as a violator, but because he know that in the main these laws are made for his best interests.The following are some of the things that those who would qualify for membership in the sportsmanship fraternity (圈内人) will do.1. Take no more game than the bag limit provided for by the fish and game laws. The person who comes back from a trip boasting about the large number of fish or game taken is not a sportsman but a game hog (贪得无厌的捕猎者) .2. Observe the unwritten rules of fair play. This means shooting game birds only when the birds are “on the wing”. For the same reason, do not use a shotgun to shoot a rabbit or similar animal while it is sitting or standing still.3. Be careful in removing illegal or undersized fish from the hook. This should be done only after wetting the hands . This is necessary because the body of the fish is covered with a thin, protective film which will stick to your dry hands. If the hands are dry when the fish is handled, the film is torn from the body of the fish. Without the protective film, the fish is more easily attacked by diseases. If you wish to release a fish that is hooked in such a way that it will be impossible to closed to the hook as convenient. In a remarkably short time, the hook will break down and the fish will remain almost unharmed. Fish have been known to feed successfully while hooks were still in their lips.4. Be sure of the identity of your target before you shoot. Many useful and harmless species of wildlife are thoughtlessly killed by the uninformed person who is out with a gun to kill whatever flies within range.S1 In what respect does the author think individual outdoor sports are similar to athletic contests? __________S2 A person who goes out fishing with a fishing rod or hunting with a gun is not necessarily _________S3 What’s the most important thing a true sportsman should bear in mind when he goes fishing or hunting _______S4 Those who violate the fish and game laws will not be ______ for membership in the sportsmanship fraternityS5 What are people called when they break the bag limit and boast about their big catch ?_________S6 A true sportsman will not shoot an animal which is not ______S7 What are people advised to do before they remove illegal or undersized fish from the hook?_______S8 What should sportsman do to avoid killing rare species of wildlife ?________S1 They both involve sportsmanship.S2 a sportsmanS3 He should observe fish and game rules.S4 qualifiedS5 They are called game hogs.S6 movingS7 They should do so after making their hands wet.S8 Be aware of the species of the target.“成千上万人疯狂下载。

2005年6月大学英语四级CET4真题及答案2005年6月大学英语四级CET4真题及答案2005年6月大学英语四级CET4真题及答案c) cooperation with the local residents and business leadersd) inclusion of farmlands in the region’s protection program39. what does bud cook mean by “having a local presence “(line 1, para. 5)?a) financial contributions from local business leadersb) consideration of the interests of the local residentsc) the establishment of a wildlife protection foundation in the aread) the setting up of a local nature conservancy branch in the pocono area40. the passage most probably is ________a) an official documentb) a news storyc) an advertisementd) a research reportpart iii vocabulary41. a word processor is much better than a typewriter in that it enables you to enter and _______your text more easilya) register b) editc) propose d) discharge42. we don’t know why so many people in that region like to wear dresses of such ______colorsa) low b) humblec) mild d) dull43. the news has just _____ that the president is going to visit china next montha) come down b) come upc) come out d) come about44. the ______ that exists among nations could certainly be lessened if misunderstanding and mistrust were removeda) tension b) strainc) stress d) intensity45. the other day , mum and i went to st. james’s hospital , and they did lots and lots of tests on me , most of them _____ and frighteninga) cheerful b) horriblec) hostile d) friendly46. in the mediterranean seaweed is so abundant and so easily harvested that it is never of great _.a) fare b) paymentc) worth d) expense47. the writer was so ____ in her work that she didn’t notice him enter the rooma) absorbed b) abandonedc) focused d) centered48. actually, information technology can ______ the gap between the poor and the rich.a) link b) breakc) ally d) bridge49. some research workers completely ______ all those facts as though they never existed.a) ignore b) leavec) refuse d) miss50. computer power now allows automatic searches of fingerprint files to match a print at a crime ______.a) stage b) scenec) location d) occasion51. the most basic reason why dialects should be preserved is that language helps to ______ a culturea) retain b) relatec) remark d) review52. companies are struggling to find the right _______between supply and demand, but it is no easy taska) equation b) formulac) balance d) pattern53. mass advertising helped to _______ the emphasis from the production of goods to their consumptiona) vary b) shiftc) lay d) moderate54. because of his excellent administration, people lived in peace and _____ and all previously neglected matters were taken care of.a) conviction b) contestc) consent d) content55. i know you’ve got a smooth tongue, so don’t talk me ______ buying ita) away b) downc) out d) into56. showing some sense of humor can be a(n) _______ wayto deal with some stressful situationa) effective b) efficientc) favorable d) favorite57. the situation described in the report ______ terrible, but it may not happena) inclines b) maintainsc) sounds d) remains58. the company is trying every means to ______ the wholesale price of its productsa) pull down b) put downc) set down d) bring down59. the mayor ______ the police officer a medal of honor for his heroic deed in rescuing the earthquake victimsa) rewarded b) awardedc) credited d) prized60. the native canadians lived in _______ with nature, for they respected nature as a provider of lifea) coordination b) acquaintancec) contact d) harmony61. many people are asking whether traditional research universities in fact have any future _______.a) at all b) so farc) in all d) on end62. i was impressed _______ the efficiency of the work done in the companya) in b) aboutc) with d) for63. now in britain, wines take up four times as much ______ in the storehouse as both beer and spiritsa) block b) landc) patch d) space64. his hand shook a little as he _______ the key in the locka) squeezed b) insertedc) stuffed d) pierced65. for professional athletes, _______ to the olympics means that they have a chance to enter the history books 共7页，当前第5页52005年6月大学英语四级CET4真题及答案相关内容:。

2005年6月大学英语四级CET4真题及答案2005年6月大学英语四级CET4真题及答案2005年6月大学英语四级CET4真题及答案26. which of the following statements best expresses the author’s view?a) aggressive behavior in sports can have serious consequencesb) the words people use can influence their behaviorc) unpleasant words in sports are often used by foreign athletesd) unfair judgments by referees will lead to violence on the sports field27. harsh words are spoken during games because the players _______a) are too eager to winb) are usually short-tempered and easily offendedc) cannot afford to be polite in fierce competitiond) treat their rivals as enemies28. what did the handball player do when he was notallowed a time out to change his gloves?a) he refused to continue the gameb) he angrily hit the referee with a ballc) he claimed that the referee was unfaird) he wet his gloves by rubbing them across his t-shirt29. according to the passage, players, in a game , may _______a) deliberately throw the ball at anyone illegally blocking their wayb) keep on screaming and shouting throughout the gamec) lie down on the ground as an act of protestd) kick the ball across the court with force30. the author hopes to have the current situation in sports improved by ______a) calling on players to use clean language on the courtb) raising the referee’s sense of responsibilityc) changing the attitude of players on the sports fieldd) regulating the relationship between players and refereespassage 3consumers are being confused and misled by the hodge-podge (大杂烩) of environmental claims made byhousehold products, according to a “green labeling”study published by consumers international friday .among the report’s more outrageous (令人无法容忍的) findings-a german fertilizer described itself as “earthworm friendly”a brand of flour said it was “non-polluting”and a british toilet paper claimed to be “environmentally friendlier”the study was written and researched by britain’s national consumer council (ncc) for lobby group consumer international. it was funded by the german and dutch governments and the european commission.“while many good and useful claims are being made , it is clear there is a long way to go in ensuring shoppers are adequately informed about the environmental impact of products they buy,”said consumers international director anna fielder .the 10-country study surveyed product packaging in britain. western europe, scandinavia and the united states. it found that products sold in germany and the united kingdom made the most environmental claims on average.the report focused on claims made by specific products , such as detergent (洗涤剂) insect sprays and by some garden products . it did not test the claims, but compared them tolabeling guidelines set by the international standards organization (iso) in september, 1999.researchers documented claims of environmental friendliness made by about 2,000 products and found many too vague or too misleading to meet iso standards.“many products had specially-designed labels to make them seem environmentally friendly, but in fact many of these symbols mean nothing,”said report researcher philip page.“laundry detergents made the most number of claims with 158. household cleaners were second with 145 separate claims, while paints were third on our list with 73. the high numbers show how very confusing it must be for consumers to sort the true from the misleading.”he said.the iso labeling standards ban vague or misleading claims on product packaging, because terms such as “environmentally friendly”and “non-polluting”cannot be verified. “what we are now pushing for is to have multinational corporations meet the standards set by the iso.”said page.31. according to the passage, the ncc found it outrageous that ______a) all the products surveyed claim to meet iso standardsb) the claims made by products are often unclear or deceivingc) consumers would believe many of the manufactures’claimd) few products actually prove to be environment friendly32. as indicated in this passage , with so many good claims , the consumers ___共7页，当前第3页32005年6月大学英语四级CET4真题及答案相关内容:。

2005年日语能力考试4级真题及答案(全)文字?語彙 (100点 25分)問題Ⅰ＿＿＿はひらがなでどうかきますか。

１２３４からいちばんいいものをひとつえらびなさい。

問1．たなか先生は土よう日にきます。

（1）．先生１．せいせ２．せいせい３．せんせ４．せんせい（2）．土よう日１．とようび２．どようび３．かようび４．がようび問2．この道を百メートいってください。

左にこうばん(派出所)があります。

（3）．道１．かど２．はし３．へん４．みち（4）．百１．ひゃく２．びゃく３．はく４．ばく（5）．左１．さき２．ひだり３．みぎ４．むこう問3．北のまちに電車ででかけました。

（6）．北１．にし２．ほか３．きた４．となり（7）．電車１．てんしゃ２．てんじゃ３．でんしゃ４．でんじゃ問4．あの人はとても有名です。

（8）．人１．にん２．ひと３．しと４．じん（9）．有名１．ゆうめい２．ゆうめ３．ゆうまい４．ゆうま問5．木の上にねこがいます。

（10）．木１．ぼん２．ほん３．ぎ４．き（11）．上１．すた２．した３．うえ４．うい問6．かわいい女の子が生まれました。

（12）．女の子１．おんなのこ２．おなのこ３．あんなのこ４．あなのこ（13）．生まれました１．ほまれました２．ふまれました３．おまれました４．うまれました問7．店の入り口はどこですか。

（14）．店１．みせ２．へや３．えき４．いえ（15）．入り口１．のりぐち２．かえりぐち３．おりぐち４．いりぐち問題Ⅱ＿＿＿のことばはどうかきますか。

１２３４からいちばんいいものをひとつえらびなさい。

問1．ははとやまにのぼりました。

（16）．はは１．姆２．毌３．奶４．母（17）．やま１．上２．山３．止４．凸問2．こんしゅうはてんきがよかった。

（18）．こんしゅう１．今週２．今過３．令週４．令過（19）．てんき１．天気２．天汽３．矢気４．矢汽問3．そのちいさいかれんだーをください。

（20）．ちいさい１．小い２．小さい３．少い４．少さい（21）．かれんだー１．カトングー２．カトンダー３．カレングー４．カレンダー問4．ひがしのそらがきれいです。

一、选择题（每题2分，共20%）1、若一条直线形的需求曲线和一条曲线型的需求曲线相切，则在切点处两曲线的需求价格弹性（）。

A. 相同B. 不同C. 可能相同也可能不同D. 依切点所在位置而定2、总效用曲线达到顶点时，( )。

A. 边际效用曲线达到最高点；B. 边际效用为零；C. 边际效用为负D. 以上说法都不正确3、要素的市场需求曲线不能用横向加总单个厂商要素需求曲线的方法导出，是因为（）。

A. 行业产品的需求会发生变化B. 厂商的需求曲线缺乏弹性C. 行业产品的价格会因供给变动而变化D. 其他原因。

4、全部收入用于购买x,y,z三种商品。

在x商品价格上升时，对y商品的需求变化表述正确的为（）。

A. y和x替代，并且为正常商品时，需求一定增加B. y和x替代，并且为低档品时，需求可能增加也可能减少C. y和x互补，并且为奢侈品时，需求一定减少D. y和x互补，并且为低档品时，需求一定减少5、有关企业成本的表述，不正确的说法为（）。

A. 边际成本是追加生产一单位商品所花费的成本B. 可变成本加固定成本构成总成本C. 在平均成本的最低点，其斜率为零D. 平均成本曲线通过边际成本曲线的最低点6、严格地说，边际消费倾向是表示（）。

A. 随着收入的增加消费量也增加的现象B. 收入增量和消费增量之间的关系C. 随着收入的增加消费增量相对减少的现象D. 收入总量和消费总增量之间的比例关系7、货币中性是指（）。

A. 货币供给量对价格水平的影响是温和的B. 货币供给量对总产量的影响不大C. 货币供给量对价格水平没有影响D. 货币供给量对总产量没有影响8、需求曲线向下倾斜的原因之一是（）。

A. 随着价格水平的下降，居民的实际财富下降，他们将增加消费B. 随着价格水平的下降，居民的实际财富增加，他们将增加消费C. 随着价格水平的上升，居民的实际财富下降，他们将增加消费D. 随着价格水平的上升，居民的实际财富上升，他们将减少消费9、下国内生产总值的最大构成部分是 ( )。

《信号与系统》2005 年期末试题A 卷班级姓名学号成绩一一 30 分二二 30 分三三 26 分分四四 14 分分1 2 3 4 5 1 2 3 1 2 3一、共 5 5 小题，总分为 0 30 分1 、试判断下列式子代表的系统是否为线性系统，并说明理由（其中 y t为系统响应， 0 y 为初始条件， f t为系统输入）（8 分）201 0 2ty t y f d2 0 cos5 0 y t y t y f t2 33 3 0 y t y t f t3 2 2245 2d y t d y t d f ty t f tdt dt dt2、、试确定信号 1 cos 1000 sin 2000 x t t t 的奈奎斯特频率。

（3 分）3 、已知描述系统的方程为4 4 2y t y t y t f t ，初始条件为 0 0 2 y y 。

求（1 ）系统传递算子 H p；；（2 ）系统零输入响应 xy t。

（7 分）4 、已知系统的单位冲击响应 2h t t ，当系统输入为142f t t t t 时，用时域分析法求系统零状态响应 fy t。

（6 分）5 、已知 f t的波形如下图，求 F j 。

（6 分）二、共 3 3 小题，总分为 0 30 分1 、系统的微分方程为 5 62 8y t y t y t f t f t ，，激励 tf t e t ，利用复频域分析法求系统的零状态响应。

（7 分）2 、系统传递函数为 N sH sD s ，试分析下列系统是否渐近稳定。

（9 分）21 1 2D s s s s 5 3 22 4 3 2 9 D s s s s s 5 4 3 23 2 3 4 11 8 D s s s s s s 3 、作出下列系统直接实现形式的模拟框图和信号流图。

（注假定系统为零状态）（14 分）113sH ss 2423 2sH ss s 三、共 3 3 小题，总分为 6 26 分1 、系统信号流图如下图所示，求系统的传递函数 H s。

2005年6月大学英语四级考试听力附试题和答案月大学英语四级考试听力附试题和答案进入MP3下载页面 下载到我的手机 (不能播放请点击此处) ) Part Part Part I I Listening Comprehension Section A1. A) The man hates to lend his tools to other people. B) The man hasn’t finished working on the bookshelf. C) The tools have already been returned to the woman. D) The tools the man borrowed from the woman are missing. 2. A) Give the ring to a policeman. B) Wait for the owner of the ring in the rest room. C) Hand in the ring to the security office. D) Take the ring to the administration building. 3. A) Save time by using a computer. B) Buy her own computer C) Borrow Martha’s computer. D) Stay home and complete her paper 4. A) The man doesn’t have money for his daughter’s graduate studies. B) The man doesn’t think his daughter will get a busi ness degree. C) The man insists that his daughter should pursue her studies in science. D) The man advises his daughter to think carefully before making her decision. 5. A) The cinema is some distance away from where they are. B) He would like to read the film review in the newspaper. C) They should wait to see the movie at a later time. D) He’ll find his way to the cinema. 6. A) He’s been to Seattle many times. B) He has chaired a lot of conferences. C) He has a high position in his company . D) He lived in Seattle for many years. 7. A) Teacher and student. B) Doctor and patient. . C) Manager and office worker. D) Travel agent and customer 8. A) She knows the guy who will give the lecture . B) She thinks the lecture might be informative C) She wants to add something to her lecture . D) She’ll finished her report this weekend 9. A) An art museum. B) A beautiful park. C) A college campus D) An architectural exhibition 10. A) The houses for sale are of poor quality B) The houses are too expensive for the couple to buy C) The housing developers provide free trips for potential buyers D) The man is unwilling to take a look at the houses for sale Section B Passage one 11. A) Synthetic fuel B) Solar energy C) Alcohol D) Electricity 12. A) Air traffic conditions B) Traffic jams on highways C) Road conditions D) New traffic rules 13. A) Go through a health check B) Carry little luggage C) Arrive early for boarding D) Undergo security checks Passage Two 14. A) In a fast-food restaurant B) At a shopping center C) At a county fair D) In a bakery 15. A) A void eating any food B) Prepare the right type of pie to eat C) Wash his hands thoroughly D) Practice eating a pie quickly 16. A) On the table B) Behind his back C) Under his bottom D) On his lap 17. A) Looking sideways to see how fast your neighbor eats. B) Eating from the outside toward the middle C) Swallowing the pie with water D) Holding the pie in the right position Passage Three 18. A) Beauty B) Loyalty C) Luck D) Durability 19. A) He wanted to follow the tradition of his country B) He believed that it symbolized an everlasting marriage C) It was thought a blood vessel in that finger led directly to the heart D) It was supposed that the diamond on that finger would bring good luck 20. A) The two people can learn about each other’s likes and dislikes B) The two people can have time to decide if they are a good match C) The two people can have time to shop for their new home. D)The two people can earn enough money for their wedding ［答案］［答案］ ACBCD DCBDA ACBCD 1-10DCBDA11-20DABCA BBACB 2005年12月四级听力原文1. W: Carol told us on the phone not to worry about her. Her left leg doesn’t hurt as much as it did yesterday.M: She’d better have it examined by a doctor anyway. A nd I will call he r about it this evening.Q: What does the man think Carol should do?2. M: There is a non-stop train for Washington and it leaves at 2:30.W: It’s faster than the 2 o’clock train. Besides, we can have something to eat before getting on the train.Q: What do we learn from the conversation?3. M: Hi, Melissa, how’s your project going? Have you thought about going to graduate school? Perhaps you can get into Harvard.W: Everything is coming along really well. I have been thinking about gr aduat e school. But I’ll talk to my tutor Dr. Garcia first and see what she thinks.Q: What do you learn about the woman from the conversation?4. W: Did you attend Alice’s presentation last night? It was the first timefor her to give a speech to a large audience.M: How she could be so calm in front of so many people is really beyo nd me!Q: What do we learn from the conversation?5. W: You’ve been doing weather reports for neatly 30 years. Has the weather got any worse in all these years?M: Well, not necessarily worse. But we are seeing more swings.Q: What does the man say about the weather?6. M: Excuse me, I am looking for the textbook by a Professor Jordon for the marketing course.W: I am afraid it’s out of stock. You’ll have to order it. And it will take the publisher 3 weeks to send it to us.Q: Where did this conversation most probably take place?7. M: I am going to New York next week, but the hotel I booked is really expensive.W: Why book a hotel? My brother has 2 spare rooms in his apartment.Q: What does the woman mean?8. W: In my opinion, watching the news on TV is a good way to learn English. What do you think?M: It would be better if you could check the same information in English newspapers afterwards.Q: What does the man say about learning English?9. M: I hear a newly-invented drug can make people tell the truth and itmay prove useful in questioning terrorists. Isn’t it incredible?W: Simple solutions to complex problems rarely succeed. As far as I kno w, no such drugs are ever known to work.Q: What does the woman think of the new drug?10. M: You know the electronics company is coming to our campus to recruit graduate students next week.W: Really? What day? I’d like to talk to them and hand in my resume.Q: What does the woman want to do?Passage oneA new study reports the common drug aspirin greatly reduces life threatening problems after an operation to replace blocked blood vessels to the heart. Mor e than 800,000 people around the world have this heart surgery each year. The doctors who carried out the study say giving aspirin to patients soon after the operation could save thousands of lives. People usually take aspirin to control pain and reduce high body temperature. Doctors also advise some people to t ake aspirin to help prevent heart attacks. About 10-15 percent of these heart o perations end in death or damage to the heart or other organs. The new study shows that even a small amount of aspirin reduced such threats. The doctors said the chance of death for patients who took aspirin would fall by 67%. The y claimed this was true if the aspirin was given within 48 hours of the operat ion. The doctors believe aspirin helps heart surgery patients because it can prevent blood from thickening and blood vessels from being blocked. However, th e doctors warned that people who have stomach bleeding or other bad reaction s from aspirin should not take it after heart surgery.Questions 11 to 13 are based on the passage you have just heard.11. What is the finding of the new study of aspirin?12. In what way can aspirin help heart surgery patients according to the doctors?13. What warning did the doctors give about the use of aspirin?Passage TwoWere you the first or the last child in you family? Or were you a middle or an only child? Some people think it matters where you were born in you fami ly. But there are different ideas about what birth order means. Some people sa y that oldest children are smart and strong-willed. They are very likely to be s uccessful. The reason for this is simple. Parents have a lot of time for their fi rst child; they give him or her a lot of attention. So this child is very likely t o do well. An only child will succeed for the same reason. What happens to t he other children in the family? Middle children don’t get so much atte ntion, s o they don’t feel that important. If a family has many children, the middle on e sometimes gets lost in the crowd. The youngest child, though, often gets spe cial treatment. He or she is the baby. Often this child grows up to be funny a nd charming. Do you believe these ideas of birth order too? A recent study sa w things quite differently. The study found that first children believed in famil y rules. They didn’t take many chances in their lives. They usually followed o rders. Rules didn’t mean as much t o later children in the family. They went o ut and followed their own ideas. They took chances and they often did better in life.Questions 14 to 16 are based on the passage you have just heard.14. According to common belief, in what way are the first child and the only child alike?15. What do people usually say about middle children?16. What do we learn about later children in a family from a recent studyof birth order?Passage ThreeWhen my interest shifted from space to the sea, I never expected it wo uld cau se such confusion among my friends, yet I can understand their feelings. As I have been writing and talking about space flight for the best part of 20 years,a sudden switch of interest to the depth of the sea doer seem peculiar. To ex plain, I’d lik e to share my reasons behind this unusual change of mind. The fi rst excuse I give is an economic one. Underwater exploration is so much chea per than space flight. The first round-trip ticket to the moon is going to cost at least 10 billion dollars if you include research and development. By the end of this century, the cost will be down to a few million. On the other hand, t he diving suit and a set of basic tools needed for skin-diving can be bought f or 20 dollars. My second argument is more philosophical. The ocean, surprisin gly enough, has many things in common with space. In their different ways, b oth sea and space are equally hostile. If we wish to survive in either for any length of time, we need to have mechanical aids. The diving suit helped the d esign of the space suit. The feelings and the emotions of a man beneath the s ea will be much like those of a man beyond the atmosphere.Questions 17 to 20 are based on the passage you have just heard.17. How did the speaker’s friends respond to his change of interest?18. What is one of the reasons for the speaker to switch his interest to underwater exploration?19. In what way does the speaker think diving is similar to space travel?20. What is the speaker’s purpose in giving this talk?Section A1. A) See a doctor.B) Stay in bed for a few days.C) Get treatment in a better hospital.D) Make a phone call to the doctor.2. A) The 2:00 train will arrive earlier.B) The 2:30 train has a dining car.C) The woman prefers to take the 2:30 train.D) they are gong to have some fast food on the train3. A) She has been longing to attend Harvard University.B) She’ll consider the man’s suggestion carefully.C) She has finished her project with Dr. Garcia’s help.D) She’ll consult Dr. Garcia about entering graduate school.4. A) Alice didn’t seem to be nervous during her speech.B) Alice needs more training in making public speeches.C) The man can hardly understand Alice’s presentation.D) The man didn’t think highly of Alice’s presentation.5. A) It’s worse than 30 years ago.B) It remains almost the same as before.C) There are more extremes in the weather.D) There has been a significant rise in temperature.6. A) At a publishing house.B) At a bookstore.C) In a reading room.D) In Prof. Jordan’s office.7. A) The man can stay in her brother’s apartment.B) Her brother can help the man find a cheaper hotel.C) Her brother can find an apartment for the man.D) The man should have booked a less expensive hotel.8. A) Priority should be given to listening.B) It’s most helpful to read English newspapers every day.C) It’s more effective to combine listening with reading.D) Reading should come before listening.9. A) It can help solve complex problems.B) It will most likely prove ineffective.C) It is a new weapon against terrorists.D) It will help detect all kinds of liars.10. A) Help the company recruit graduate students.B) Visit the electronics company next week.C) Get apart-time job on campus before graduation.D) Apply for a job in the electronics company.Section BPassage OneQuestions 11 to 13 are based on the passage you have just heard.11. A) It ha been proven to be the best pain-killer.B) It is a possible cure for heart disease.C) It can help lower high body temperature effectively.D) It reduces the chance of death for heart surgery patients.12. A) It keeps blood vessels from being blocked.B) It speeds up their recovery after surgery.C) It in creases the blood flow to the heart.D) It adjusts their blood pressure.13. A) It is harmful to heart surgery patients with stomach bleeding.B) It should not be taken by heart surgery patients before the operation.C) It will have considerable side effects if taken in large doses.D) It should not be given to patients immediately after the operation. Passage TwoQuestions 14 to 16 are based on the passage you have just heard.14. A) They strongly believe in family rules.B) They are very likely to succeed in life.C) They tend to take responsibility for themselves.D) They are in the habit of obeying their parents.15. A) They grow up to be funny and charming.B) They often have a poor sense of direction.C) They get less attention from their parents.D) They tend to be smart and strong-willed.16. A) They usually don’t follow family rules.B) They don’t like to take chances in their lives.C) They are less likely to be successful in life.D) They tend to believe in their parent’s ideas.Passage ThreeQuestions 17 to 20 are based on the passage you have just heard.17. A) They wanted to follow his example.B) They fully supported his undertaking.C) They were puzzled by his decision.D) They were afraid he wasn’t fully prepared.18. A) It is more exciting than space travel.B) It is much cheaper than space travel.C) It is much safer than space travel.D) It is less time-consuming than space travel.19. A) They both attract s cientists’ attention.B) They can both be quite challenging.C) They are both thought-provoking.D) They may both lead to surprising findings.20. A) To show how simple the mechanical aids for diving can be.B) To provide an excuse for his changeable character.C) To explore the philosophical issues of space travel.D) To explain why he took up underwater exploration。