三峡大学2202数值分析2019年考博试卷考博真题

博士研究生资格考试试题网络空间安全2019年6月注：1、答卷方式：开卷，笔试；2、答题时间：3小时；3、满分100分；4、试题分必答和选答题。

一、解释下列术语（20分，每题5分）a) Provable security可证明安全性：通过有效的变换，将对密码体制的任何有效攻击归约为一类已知NP 问题的一个实例。

b) Man in the middle attack中间人攻击：通信双方都诚实的执行协议，而敌手拦截并修改从一方发送到另一方的消息。

c) Bilinear map设G 1，G 2和G t 都是q 阶循环群，其中q 为素数。

如果映射e : G 1 × G 2 → G t 满足以下性质：（1）双线性性：对于任意a , b ∈Z ，u ∈G 1，v ∈G 2，有e (u a , v b ) = e (u , v )ab 。

（2）非退化性：存在u ∈G 1，v ∈G 2，使得e (u , v ) ≠ 1。

（3）可计算性：对于任意u ∈G 1，v ∈G 2，存在有效算法可以计算e (u , v )。

则称e 是一个双线性映射。

d) Quadratic residue设n 是正整数且a 和n 互素。

如果存在x 使得x 2 ≡ a (mod n )，则称a 是对模n 的二次剩余。

二、（20分）ElGamal 加密算法是不是语义安全的？请简单论述你的理由。

由ElGamal 加密算法所依赖的假设决定。

三、（20分）叙述拉格朗日插值算法，并给出一个例子说明如何在秘密分享中使用。

（1）拉格朗日插值法可以给出一个恰好穿过二维平面上若干个不重复点的最低阶多项式。

已知有n + 1个定点 (x 0, y 0), …, (x n , y n )。

若对于任意i ≠ j ，都有x j ≠ x j 都不相等，则拉格朗日插值多项式为()()0kj j j L x y l x ==∑。

其中每个l j (x )为拉格朗日基本多项式，其表达式为()0,ki j i i j j i x x l x x x =≠-=-∏。

考博英语分类模拟题2019年(33)(总分30, 做题时间90分钟)Reading ComprehensionPassage OneOne of the most authoritative voices speaking to us today is of course the voice of the advertisers. Its strident clamour dominates our lives. It shouts at us from the television screen and the radio loudspeakers; waves to us from every page of the newspaper; plucks at our sleeves on the escalator; signals to us from the roadside billboards all day and flashes messages to us in coloured lights all night. It has forced on us a whole new conception of the successful man as a man no less than 20% of whose mail consists of announcements of giant carpet sales.Advertising has been among England's biggest growth industries since the war, in terms of the ratio of money earnings to demonstrable achievement. Why all this fantastic expenditure?Perhaps the answer is that advertising saves the manufacturers from having to think about the customer. At the stage of designing and developing a product, there is quite enough to think about without worrying over whether anybody will want to buy it. The designer is busy enough without adding customer-appeal to all his other problems of man-hours and machine tolerances and stress factors. So they just go ahead and make the thing and leave it to the advertiser to find eleven ways of making it appeal to purchasersafter they have finished it, by pretending that it confers status, or attracts love, or signifies manliness. If the advertising agency can do this authoritatively enough, the manufacturer is in clover.Other manufacturers find advertising saves them changing their product. And manufacturers hate change. The ideal product is one which goes on unchanged for ever. If, therefore, for one reason or another, some alteration seems called for—how much better to change the image, the packet or pile pitch made by the product, rather than go to all the inconvenience of changing the product itself.The advertising man has to combine the qualities of the three most authoritative professions: Church, Bar and Medicine. The great skill required of our priests, most highly developed in missionaries but present, indeed mandatory, in all, is the skill of getting people to believe in and contribute money to something which can never be logically proved. At the Bar, an essential ability is that of presenting the most persuasive case you can to a jury of ordinary people, with emotional appeals masquerading as logical exposition; a case you do not necessarily have to believe in yourself, just one you have studiously avoided discovering to be false. As for medicine, anydoctor will confirm that a large part of his job is not clinical treatment but faith healing. His apparently scientific approach enables his patients to believe that he knows exactly what is wrong with them and exactly what they need to put the right, just as advertising does—"Run down? You need..." "No one will dance with you? A dab of... will make you popular."Advertising man use statistics rather like a drunk uses a lamp-post for support rater than illumination. They will dress anyone up in a white coat to appear like an <em>unimpeachable</em> authority or, failing that, they will even be happy with the announcement, "As used by 90% of the actors who play doctors on television." Their engaging quality is that they enjoy having their latest ruses uncovered almost as much as anyone else.SSS_SIMPLE_SIN1.According to the passage, modern advertising is "authoritative" because of the way it ______.•** our image of the kind of person we ought to be like•** with the privacy of our home life•** forces us into buying things we don't want** us no matter where we travelA B C D该题您未回答:х该问题分值: 1.5答案:D根据文章第一段“Its strident clamour dominates our lives. It shouts at us from the television screen and the radio loudspeakers; waves to us from every page of the newspaper; plucks at our sleeves on the escalator; signals to us from the roadside billboards all day and flashe s messages to us in coloured lights all night.”可知，它的喧嚣主宰着我们的生活。

名词解释肝肾综合征(HRS)（北医2001）：又称功能性肾衰，以自发性少尿或无尿，氮质血症，稀释性低钠血症和低尿钠为特征，而肾脏无明显病理改变。

机理：肾血管收缩，致肾皮质血流量和肾小球滤过率持续降低。

交感神经兴奋性增高，去甲肾分泌增加；肾素-血管紧张素系统活性增强；肾PGs合成减少，血栓素（TXA2）增多；内毒素血症：增加肾血管阻力；白细胞三烯产生增加，引起肾血管收缩. 肝肺综合征: 指严重肝病、肺血管扩张和低氧血症组成的三联征.肠易激综合征(IBS)（同济2008）：是一种腹痛或腹部不适伴排便习惯改变为特征的功能性肠病，经检查排除可引起这些症状的器质性疾病。

Zollinger-Ellison综合征，卓－艾综合征（北医2002）（胃泌素瘤）：胰腺非β细胞瘤分泌大量胃泌素所致，肿瘤一般很小（<1cm)，生长缓慢，半数为恶性。

大量胃泌素可刺激壁细胞增生，分泌大量胃酸，使上消化道处于高酸状态，导致胃，十二指肠球部和不典型部位发生多发性溃疡。

胃泌素瘤与普通消化性溃疡的鉴别要点是该病溃疡发生在不典型部位，具有难治的特点，高胃酸分泌，血清胃泌素>200pg/ml。

库瓦济埃（Courvoisier）征（哈医大2008）：在胰头癌压迫胆总管导致阻塞时，发生明显黄疸，且逐渐加深，胆囊显著肿大，但无压痛，称为Courvoisier征，又称胆总管渐进阻塞征。

在胆总管结石梗阻所致的黄疸病人中，由于胆囊也常有慢性炎症，囊壁因纤维而皱缩，且与周围组织粘连而失去移动性，因而有黄疸但胆囊常不肿大，称为Courvoisier征阴性。

TIPS（同济）：经颈静脉肝内门体分流术，是一种以血管介入的方法在肝内的门静分支和肝静脉分支间建立分流通道。

它能有效降低门静脉压力，适用于食道静脉曲张破裂大出血、难治性腹水，易诱发肝性脑病.virchow淋巴结：（哈医大2008）胃癌的癌细胞向远处淋巴结转移，因胃的淋巴系统与锁骨上的淋巴结相连接，癌细胞转移到该处时称为virchow淋巴结。

考博英语分类模拟题2019年(38)(总分57.5, 做题时间90分钟)Part Ⅰ Reading ComprehensionPassage OneWhat are those of us who have chosen careers in science and engineering able to do about our current problems?First, we can help destroy the false impression that science and engineering have caused the current world trouble. On the contrary, science and engineering have made vast contributions to better living for more people.Second, we can identify the many areas in which science and technology, more considerably used, can be of great service in the future than in the past to improve the quality of life. While we can make many speeches, and pass many laws, the quality of our environment will be improved only through better knowledge and better application of that knowledge.Third, we can recognize that much of the dissatisfaction we suffer today results from our very successes of former years. We have been so greatly successful in attaining material goals that we are deeply dissatisfied that we cannot attain other goals more rapidly. We have achieved a better life for most people, but we are unhappy that we have not spread it to all people. We have reduced many sources of environmental disasters, but we are unhappy that we have not conquered all of them. It is our raised expectations rather than our failures which now cause our distress.Granted that many of our current problems must be cured more by social, political, and economic instruments than science and technology, yet science and technology must still be the tools to make further advances in such things as clean air, clean water,better transportation, better medical care, more adequate welfare programs, purer food, conservation resources, and many other areas.SSS_SIMPLE_SIN1.The author thinks that science and technology ______.•** caused the current world problems•** made life better for more people•**, if not in the past, better people's life in the future** not bring a better life for most peopleA B C D该题您未回答:х该问题分值: 1.5答案:B第二段指出，有人认为，科学与技术造成了当今世界的许多问题，对这种错误认识，科技工程人员有义务加以纠正。

Listening ：无Vocabulary ：Section A31. According to the Geneva ______no prisoners of war shall be subject to abuse.A. CustomsB. CongressesC. ConventionsD. Routines 32. Environmental officials insist that something be done to ______acid rain.A. curbB. sueC. detoxifyD. condemn33. It is impossible to say how it will take place, because it will happen______, and itwill not be a long process.A. spontaneouslyB. simultaneouslyC. principallyD. approximately34. Diabetes is one of the most______ and potentially dangerous disease in the world.A. crucialB. virulentC. colossalD. prevalent35. Rheumatologist advises that those with ongoing aches and pains first seek medicalhelp to ______the problem.A. affiliateB. alleviateC. aggravateD. accelerate36. How is it possible that such______ deception has come to take place right underour noses?A. obviousB. significantC. necessaryD. widespread37. Now a paper in Science argues that organic chemicals in the rock come mostly from______on earth rather than bacteria on Mars.A. configurationB. constitutionC. condemnationD. contamination38. Chronic high-dose intake of vitamin A has been shown to have ______effects onbones.A. adverseB. prevalentC. instantD. purposeful39. Generally, vaccine makers _____ the virus in fertilized chicken eggs in a processthat can take four to six months.A. penetrateB. designateC. generateD. exaggerate40. We are much quicker to respond, and we respond far too quickly by giving ______to our anger.A. ventB. impulseC. temperD. offenceSection B41. The patient's condition has worsened since last night.A. improvedB. returnedC. deterioratedD. changed42. Beijing Television-Station Transmitting Tower really looks magnificent at nightwhen it ’s lit up.A. decoratedB. illustratedC. illuminatedD. entertained43. Attempts to restrict parking in the city centre have further aggravated the problemof traffic congestion.A. amelioratedB. aggregatedC. deterioratedD. duplicated44. The applications of genetic engineering are abundant and choosing oneappropriate for this case can be rather difficult.A. sufficientB. plentifulC. adequateD. countable45. The defect occurs in the first eight weeks of pregnancy, though no one understandswhy.A. deficitB. deviationC. draw backD. discrepancy46. He has been on hormone alternate therapy for four years and looks fantastic.A. successorB. replacementC. surrogateD. choice47. It had over 2,000 apartment complexes, a great market, a large number ofindustrial workshops, an administrative center, a number of massive religious edifices,and a regular grid pattern of streets and buildings.A. ancientB. carefullyC. very largeD. carefully protected48. When patients spend extended periods in hospital, they tend to become overlydependent and lose interest in taking care of themselves.A. extremelyB. exclusivelyC. exactlyD. explicitly49. The anxious parent was vigilant over the injured child in spite of a full array ofemergency room of doctors and nurses.A. preoccupiedB. unwaryC. watchfulD. dozing50. The doctor vacillated so frequently on disease-preventiontechniques that hiscolleagues accused him of inconsistency.A. waveredB. instigatedC. experimentedD. reliedClozeWe spend a lot of time looking at the eyes of others for social 51 —it helpsus understand a person ’emotions, and make decisions about how to respond to them. We also know that adults avoid eye contact when anxious. But researchers have knownfar 52 about eye gazing patterns in children.According to new research by Kalina Michalska, assistant professor of psychologyat the University of California, Riverside, we now, know that anxious children tend toavoid making eye contact, and this has consequences for how they experience fear. The53 and less frequently they look at the eyes of others, the more likely they are to beafraid of them, even when there may be no reason to be. Her study, “Anxiety Sympand Children's Eye Gaze During Fear Leaming”w,as published in the journal TheJournal of Child Psychology and Psychiatry."Looking at someone ’s eyes helps us understand whether a person is feeling sad, angry, fearful, or surprised. As adults, we then make decisions about how to respondand what to do next. But, we know much less about eye patterns in children —so,understanding those patterns can help us learn more about the development of sociallearning, ”Michalska said.Michalska and the team of researchersshowed 82 children, 9 to 13 years old,images of two women ’s faces on a computer screen. The computer was equipped withan eye tracking device that allowed them to measure54 on the screen children werelooking, and for how long. The participants were originally shown each of the twowomen a total of four times. Next, one of the images was55 with a loud scream anda fearful expression, and the other one was not. At the end, children saw both facesagain without any sound or scream.The following three conclusions can be drawn from the study:1. All children spent more time looking at the eyes of a face that was paired withthe loud scream t han the face that was not paired with the scream, 56 they payattention to potential threats even in the absence of outward cues.2. Children who were more anxious avoided eye contact during all three phases of the experiment, for both kinds of faces. This had consequences for how afraid they wereof the faces.3. The more children avoided eye conta；cthe more afraid they were 57 the faces.The conclusions suggest that children spend more time looking at the eyes of aface when previously paired with something frightening suggesting they pay moreattention to potentially threatening information as a way to learn more about thesituation and plan what to do next.However, anxious children tend to avoid making eye contact, which leads togreater 58 experience. Even though avoiding eye contact may reduce anxiety59 , the study finds that — over time — children may be m i s s6i n0g_ o i m u p t ortantsocial information. This includes that a person may no longer be threatening or scary,and yet the child continues feeling fearful of that person.51. A. environment B. cues C. relations D. answers52. A. less B. more C. enough D. beyond53. A. longer B. more anxious C. shorter D. more54. A. where B. when C. how D. what55. A. followed B. recorded C. paired D. marked56. A. suggest B. suggesting C. suggests D. being suggested57. A. to B. of C.at D. about58. A. fear B. surprise C. sad D. angry59. A. in the long run B. for a long timeC. in the short timeD. in a long time60. A. with B. without C. of D. onReading ComprehensionPassage OneThe British psychoanalyst John Bowlby maintains that separation from the parentsduring the sensitive “attachment p”e riod from birth to three may scar a child ’s personality and predispose to emotional problems in later life.Some people have drawn the conclusion from Bowlby' s work that children shouldnot be subjected to day care before the age of three because of the parental separationit entails, and many people do believe this. It has been argued that an infant under threewho is cared for outside the home may suffer because of the separation from his parents. But there are also arguments against such a strong conclusion.But traditional societies are so different from modem societies that comparisonsbased on just one factor are hard to interpret. Firstly, anthropologists point out that theinsulated love affair between children and parents found in modem societies does notusually exist in traditional societies. For example, in some tribal societies, such as theNgoni, the father and mother of a child did not rear their infant alone —far from i Certainty, Bowlby ’s analysis raises the possibilities that early day care had delayedeffects. The possibility that such care might lead to, say, more mental illness or crime15 or 20 years later can only explored by the use of statistics. However, statisticalstudies of this kind have not yet been carried out, and even if they were, the resultswould certainly be complicated and controversial. Secondly, common sense tells us that day care would not be so widespread today if parents, care-takers found children hadproblems with it. Thirdly, in the last decade, t here have been a number of careful American studies of children in day care, and they have uniformly reported that care had a neutral or slightly positive effect on children ’s development.Whatever the long-term effects, parents sometimes find the immediate effectsdifficult to deal with. Children under three are likely to protest at leaving their parentsand show unhappiness. At the age of three or three and a half almost all children findthe transition to nursery eas，yand this is undoubtedly why more and more parents make use of child care at this time. The matter, then, is far from clear-cut, though experienceand available evidence indicate early care is reasonable for infants.61. According to the passage, the consequence of parental separation________.A. still needs more statistical studiesB. has been found negative is more seriousC. is obviousD. in modem times62. The author thinks that John Bowlby ’s concern___________.A. is relevant and justifiableB. is too strong to RelieveC. is utterly groundlessD. has something that deserve our attention63. What ’s the result of American studies of children in day care in the last decade?A. The children ’s unhappiness and protest was due to the day care the children received.B. The bad effects of parental separation were hard to deal with.C. The effect of day care was not necessarily negative on children ’s development.D. Early care was reasonable for babies since it ’p sracti c ed by so many peoplenowadays.64. According to the passage, which of the following is probably a reason forparents to send their children under three to day care?A. They don ’t know about day care ’s negative effect.B. They are too busy to care fortheir children.C. They want their children to be independent as early as possible.D. They want to facilitate their children to adapt to nursery at the age of about three.65. What ’s the author ’s attitude to people who have drawn the conclusion fromBowlby’s work that children should not be subjected to day care before the age ofthree?A. He supports most of their belief because Bowlby's proposition is well-grounded.B. He is sympathetic for them, for he thinks they have been misled by Bowlby.C. He doesn't totally agree with them, since the long-term effect of day care still needsfurther study.D. He doesn't quite understand them, as they are contradictory in themselves.Passage TwoBy the end of this century, the average world temperature is expected to increasebetween one and four degrees, with widespread effects on rainfall, sea levels and animalhabitats. But in the Arctic, where the effects of climate change are most intense, the risein temperature could be twice as much.Understanding how Arctic warming will affect the people, animals, plant andmarine life and economic activity in Canada’N sort h are important to the country's future, says Kent Moore, an atmospheric physicist at University of Toronto Mississaugawho is participating in a long-term, international study of the marine ecosystem alongthe Beaufort Sea, from Alaska to the Mackenzie delta.The study will add to our knowledge of everything from the extent of sea ice inthe region to how fish stocks will change to which areas could become targets for oiland gas exploration to the impact on the indigenous people who call this part of thecountry home.Moore, who has worked in the Arctic for more than 20 years, says his research hasalready found that thinning sea ice and changes in wind patterns are causing animportant change in the marine food chain: phytoplankton（淳游植物） is blooming two to three weeks earlier. Manyanimals time their annual migration to the Arctic forwhen food is plentiful, and have not adapted to the earlier bloom. " ' Animals' behaviorcan evolve over a long time, but these climate changes are happening in the space of adecade, r ather than hundreds of years, ”says Moore, " Animals can't change theirbehavior that quickly. ”A warmer Arctic is expected to have important effects on human activity in theregion, as the Northwest Passage becomes navigable during the summer, and resourceextraction becomes more feasible. Information gained from the study will helpgovernment, industry and communities make decisions about resource management,economic development and environmental protection.Moore says the study — which involves Canadian, American and Europeanresearchersand government agencies will also use a novel technology to gatheratmospheric data: remotely piloted drones. "The drones have the capability of a largeresearch aircraft，and they ’re easier to deploy, ” he says, showing the researchers to gather information on a more regular basis than they would be able to with pilotedaircraft.66. By the end of this century, according to the author, global warming will ______.A. start to bring about extreme weather events to humans and animalsB. increase the average world temperature by four degreesC. cause more damages to the whole world than expectedD. affect the Arctic more than any other parts of the earth67. To help understand the destructive mechanism of Arctic warming, as indicatedby the passage, the international study ______.A. is conducted with every single discipline of University of TorontoB. pioneers in pursuing the widespread effects of climate changeC. involves so many countries for different investigationsD. is intended to deal with various aspects in research68. When he ways, “Animals can ’t change their behavior that quickly, ”what doesMoore mean by that quickly?A. The migration of the animals to the Arctic.B. The widespread effects of global warming.C. The rate of the climate change in the Arctic.D. The phytoplankton within the marine ecosystem.69. According to the author, to carry out proper human activities in theArctic______.A. becomes more difficult than ever beforeB. is likely to build a novel economy in the regionC. will surely lower the average world temperatureD. needs the research-based supporting information70. With the drones deployed, as Moore predicts, the researchers will _______.A. involve more collaborating countries than they do nowB. get more data to be required for their researchC. use more novel technologies in researchD. conduct their research at a regular basisPassage ThreeHaving too much caffeine during pregnancy may impair baby ’s liver development and increase the risk of liver disease in adulthood, according to a study published in theJournal of Endocrinology. Pregnant rats given caffeine had offspring with lower birth weights, altered growth and stress hormonelevels and impaired liver development. Thestudy findings indicate that consumption of caffeine equivalent to 2-3 cups of coffee may alter stress and growth hormone levels in a manner that can impair growth and development, and increase the risk of liver disease in adulthood.Previous studies have indicated that prenatal caffeine intake of 300 mg/day ormore in women, which is approximately 2 to 3 cups coffee per day, can result in lower birth weights of their children. Animalstudies have further suggestedthat prenatalcaffeine consumption may have more detrimental long-term effects on liverdevelopment with an increased susceptibility to non-alcoholic fatty liver disease, adebilitating condition normally associated w ith obesity and diabetes. However, theunderlying link between prenatal caffeine exposure and impaired liver developmentremains poorly understood. A better understanding of how caffeine mediates theseeffects could help prevent these health issues in people in the future.In this study, Prof Hui Wang and colleagues at Wuhan University in China,investigated the effects of low (equivalent to 2-3 cups of coffee) and high dose(equivalent of 6-9 cups of coffee) caffeine, given to pregnant rats, on liver function andhormone levels of their offspring. Offspring exposed to prenatal caffeine had lower levels of the liver hormone, insulin likegrowth factor (IGF-1), and higher levels of thestress hormone, corticosteroid at birth. However, liver development after birth showed a compensatory 'catch up' phase, characterised by increased levels of IGF-1, which is important for growth.Dr. Yinxian Wen, study co-author, says, “Our results indicate that prenatal caffeine causes an excess of stress hormone activity in the mother, which inhibits IGF-1 activityfor liver development before birth. However, compensatory mechanisms do occur after birth to accelerate growth and restore normalliver function, as IGF-1 activity increasesand stress hormone signalling decreases. The increased risk of fatty liver disease causedby prenatal caffeine exposure is most likely a consequence of this enhanced,compensatory postnatal IGF-1 activity. ”These findings not only confirm that prenatal caffeine exposure leads to lowerbirth weight and impaired liver development before birth but also expand our currentunderstanding of the hormonal changes underlying these changes and suggest thepotential mechanism for increased risk of liver disease in the future. However, theseanimal findings need to be confirmed in humans.Dr. Wen comments, "Our work suggeststhat prenatal caffeine is not good for babies and although these findingsstill need to be confirmed in people, I wouldrecommend that women avoid caffeine during pregnancy."71. Which of the following is NOT the problem of baby rats of pregnant rats givencaffeine?A. Lower birth weight.B. Smaller stress.C. Liver development problem.D. Growth problem.72. If a pregnant woman takes 3 cups of coffee, what will probably happen?A. Her weight will get lower and lower.B. The weight of her baby will get lower and lower.C. She will suffer from non-alcoholic fatty liver disease in a long run.D. Her baby will be more vulnerable to obesity and diabetes because of liver problem.73. Which of following is not correct according to the passage?A. A better understanding of the relationship between caffeine and effects has beenachieved.B. 4-5 cups of coffee could be categorized as medium-dose intake.C. Liver development problem may be remedied after birth by increased growth factor.D. The study is mainly conducted on the rats instead of human.74. What is the relationship between stress hormone and liver development whentaking in prenatal caffeine?A. Lower stress hormone, lower birth weight before birth.B. Higher stress hormone, lower growth hormone before birth.C. Higher stress hormone, more accelerated growth of weight after birth.D. Lower stress hormone, less accelerated growth of liver after birth.75. What can be the best summary of the last paragraph?A. The research hasn ’t been done on humans so pregnant women can ignore the results.B. The compensatory mechanism for liver growth makes prenatal caffeine intake safe.C. Experts suggest pregnant women should still avoid caffeine.D. We have known enough about the hormone changes underlying the healthPassage FourThe bizarre antics of sleepwalkers have puzzled police, perplexed scientists, and fascinated writers for centuries. There is an endless supply of stories about sleepwalkers.Persons have been said to climb on steep roofs, solve mathematical problems, composemusic, walk through plate-glass windows, and commit murder in their sleepHow many of these stories have a basis in fact, and how many are pure fakery?No one knows, but if some of the most sensational stories should be taken with a barrelof salt, others are a matter of record.In Revere, Massachusetts, a hundred policemen combed a waterfrontneighborhood for a lost boy who left his home in his sleep and woke up five hours lateron a strange sofa in a strange living room, with no idea how he had got there.There is an early medical record of a somnambulist who wrote a novel in his sleep.And the great French writer V oltaire knew a sleepwalker who once got out of bed,dressed himself, made a polite bow, danced a minuet, and then undressed and went backto bed.At the University of Iowa, a student was reported to have the habit of getting upin the middle of the night and walking three-quarters of a mile to the Iowa River. He would take a swim and then go back tohis room to bed.The world's champion sleepwalker was supposed to have been an Indian, PanditRamrakha, who walked sixteen miles along a dangerous road without realizing that hehad left his bed. Second in line for the title is probably either a Vienna housewife or a British farmer. The woman did all her shopping on busy streets in her sleep. The farmer,in his sleep, visited a veterinarian miles away.The leading expert on sleep in America claims that he has never seen a sleepwalker.He is Dr. Nathaniel Kleitman, a physiologist at the University of Chicago. He is said toknow more about sleep than any other living man, and during the last thirty-five yearshad lost a lot of sleep watching people sleep. Says he, "Of course, I know that there are sleepwalkers becauseI have read about them in the newspapers. B ut none of mysleepers ever walked, and if I were to advertise for sleepwalkers for an experiment, Idoubt that I'd get many takers."Sleepwalking, nevertheless, is a scientific reality. Like hypnosis, it is one of thosedramatic, eerie, awe-inspiring phenomena that sometimes border on the fantastic. Itlends itself to controversy and misconceptions, what is certain about sleepwalking isthat it is a symptom of emotional disturbance, and that the only way to cure it is to remove the worries and anxieties that cause it. Doctors say that somnambulism is muchmore common than is generally supposed.Some have estimated that there are fourmillion somnambulists in the United States. Others set the figure even higher. Manysleepwalkers do not seek help and so are never put on record, which means that anaccurate count can never be made.The simplest explanation of sleepwalking is that it is the acting out of a vividdream. The dream usually comes from guilt, worry, nervousness, o r some otheremotional conflict. The classic sleepwalker is Shakespeare ’L asdy Macbeth. Hernightly wanderings were caused by her guilty conscience at having committed murder. Shakespeare said of her, “The eyes are open but their sense is shut. ”The age-old question is: Is the sleepwalker actually awake or asleep. Scientists have decided that he is about half-and-half. Like Lady Macbeth, he has weightyproblems on his mind. Dr. Zeida Teplitz, who made a ten-year study of the subject, says, “Some people stay awake all night worrying about t heir problems. The sleepwalker thrashes them out in his sleep. He is awake in the muscular area, partially asleep in the sensory area." In other words, a person can walk in his sleep, move around, and do other things, but he does not think about what he is doing.76. The second sentence in the second paragraph means that_________.A. no one knows, but certainly all the sleep walking stories have something incredibleB. the sleepwalking stories are like salt adding flavor to people ’s lifeC. sleepwalking stories that are most fantastic should be sorted out from ordinary storiesD. the most fantastic sleepwalking stories may be just fictions, yet there are stilltruthfully recorded stories77. ________was supposed to be the world's champion sleepwalker.A. The student habitually walked to the Iowa River and swam in his sleepB. The man danced a minuet in his sleepC. The man walker sixteen miles along a dangerous roadD. The boy walked five hours in his sleep78. Sleepwalking is the result of ______ according to the passage.A. emotional disorderB. a vivid dreamC. lack of sleep and great anxietyD. insanity79. Dr. Zeida Teplitz seemed to_________.A. agree that sleepwalking sometimes leads to dangerous actsB. conclude that sleepwalkers are awake in their sensory areaC. disagree with the belief that sleep walkers are immune to injuryD. think that sleepwalking can turn into madness80. The writer makes it obvious that_________.A. sleepwalkers are often awakened by dangersB. most sleepwalkers can find ways to avoid self-injuryC. it is important to find out the underlying cause of sleepwalkingD. sleepwalking is actually a kind of hypnosisPassage FiveBeyond the basic animal instincts to seek food and avoid pain, Freud identifiedtwo sources of psychic energy, which he called "drives ”: aggression and libido. The keto his theory is that these were unconscious drives, shaping our behavior without themediation of our waking minds; they surface, heavily disguised, only in our dreams.The work of the past half-century in psychology and neuroscience has been to downplaythe role of unconscious universal drives, focusing instead on rational processesinconscious life. But researchers have found evidence that Freud s drives really do exist,and they have their roots in the limbic system, a primitive part of the brain that operatesmostly below the horizon of consciousness.Now more commonly referred to as emotions, the modem suite of drives comprises five: rage, panic, separation distress,lust and a variation on libido sometimes called seeking.The seeking drive is proving a particularly fruitful subject for researchers.Although like the others it originates in the limbic system, it also involves parts of theforebrain, the seat of higher mental functions. In the 1980s, Jaak Panksepp, aneurobiologist at Bowling Green State University in Ohio, became interested in a placenear the cortex known as the ventraltegmental area, which in humans lies just abovethe hairline. When Panksepp stimulated the corresponding region in a mouse, theanimal would sniff the air and walk around, as though it were looking for something.Was it hungry? No. The mouse would walk right by a plate of food, or for that matterany other object Panksepp could think of. This brain tissue seemed to cause a generaldesire for something new. “What I was seeing, ” he says, “was the urge to do stuff.Panksepp called this seeking.To neuropsychologist Mark Solms of University College in London, that soundsvery much like libido. “Freud needed some sort of general, appetitive desire to seekpleasure in the world of objects, ” says Solms. "Panksepp discovered as a neuroscientist what Freud discovered psychologically. ” Solms studied the same region of the brain forhis work on dreams. Since the 1970s, neurologists have known that dreaming takesplace during a particular form of sleep known as REM — rapid eye movement — whichis associated with a primitive part of the brain known as the pons. Accordingly, they regarded dreaming as a low-level phenomenon of no great psychological interest. WhenSolms looked into it, though, it turned out that the key structure involved in dreaming was actually the ventral tegmental, the same structure that Panksepp had identified as the seat of the “”s e e m k i o n t g i o n. Dreams, it seemed, originate with the libid—o which is just what Freud had believed.Freud's psychological map may have been flawed in many ways, but it alsohappensto be the most coherent and, from the standpoint of individual experience,meaningful theory of the mind. “Freud should be placed in the same category as Darwin,who lived before the discovery of genes, ” says Panksepp. “Freud gave us a vision ofmental apparatus. We need to talk about it, develop it, test it. ” Perhaps it ’sof proving Freud wrong or right, but of finishing the job.。

中南大学2019年博士研究生英语入学考试试题试卷一（A）Part I Use of English ( 20% )Section A Vocabulary and Structure ( 10%，每题0.5分)Directions: There are 20 incomplete sentences in this section. For each sentence, thereare four choices marked A, B, C and D. Choose the ONE answer that best completesthe sentence. Then mark the corresponding letter on Answer Sheet with a single linethrough the center.1.Johnson vows that if I the connection, he will settle in the village forthe rest of his life, and you know it is impossible to submit to such an extremitywhile any other alternative remains.A)stay on B)wait up C)indulge in D)persist in2.Paradoxically, Robinson's excessive denials of the worth of early works of sciencefiction suggest that she has become quite_________ them.A）offended by B) enamored ofC)unconvinced of D)encouraged by3.Even those who disagreed with Carmen's views rarely faulted her for expressingthem. for the positions she took were as _______ as they were controversial.A)thoughtful B)political C)subjective D)commonplaceually the first to spot data that were inconsistent with other findings, in thisparticular experiment she let a number of _________ results slip by.A)inaccurate B)verifiable C)redundant D)anomalous5.While Parker is very outspoken on issues she cares about, she is not ______; sheconcedes thestrength of opposing arguments when they expose weaknesses inherentin her own.A)fickle B)arrogant C)fanatical D)unyielding6.Because no comprehensive _______ exist regarding personal reading practices. wedo not know. for example. the greatest number of books read in an individuallifetime.A)records B)instincts C)remedies D)proposals7.Before about 1960, virtually all accounts of evolution assumed most adaptation tobe a product of selection at the level of populations: recent studies of evolution, however. have found no ______this pervasive view of selection.A)departures from B)basis forC)bias toward D)precursors of8.As serious as she is about the bullfight. she does not allow respect to hersense of whimsy when painting it.A)inspire B)provoke C)suppress D)satisfy9.Whether you are male or female, if you your early and middle teenageyears you will probably recall many times when you stood in front of a mirror looking at yourself or worrying about your height, weight, or body shape.A)think back to B)considerate aboutC)trace backward D)in memory about10.Any government that governs the interests of the people is capable ofsolving various problems both at home and abroad.A)in association to B)by stick toC)in accord with D)in the case of11.The universal _________with all its profound and melancholy meaning assailedheavily Razumov, who, amongst eighty million of his kith and kin, had no heart towhich he could open himself.A)aspiration B)inspiration C)attraction D) tenacity12.She is one of the few politicians who her principles, even though it makesher unpopular with the voters.A)strays around B)stays true toC)believes about D)conceals around13.To be sure I dawdled over a great many books that I had read before, and a numberof memoirs and ________, but I had no intense pleasure from reading in that time and have no passions to record of it.A)biographies B)novels C)documents D)fictions14.Ken his earlier poor performance by scoring two goals in the second half ofthe match.A)paid for B)shifted with C)redeemed D)stabbed into15.Philadelphia's rapid expansion in the nineteenth century gave it a wonderfully richlegacy of "Victorian" buildings and indeed the city has been described as "a museum of American Architecture".A)individually B)justly C)widely D)orderly16.The recent educational development has set the scene for our universities tothe notion that students are our most important clients.A)embrace B)refunding C)dispute D)interrupt17.It's hard to believe that in this country of, hunger could be a serious problem.A)productive B）prosperityC)promiscuous D)promptitude18.There can be no collapse in the property market because sellers have a real tosell if they can't make last year's prices.A)reluctance B)manipulationC)recommendation D)justification19.Even as it is, she was quite right: she was suffering and that was her _____, so tospeak, her capital which she had a perfect right to dispose of.A)rhythm B)fame C)asset D)morale20.I suppose it would be profanation to eat anything in this spick-and-span bower, soas I'm tremendously hungry, I propose an(a) ________," he added presently.A)postponement B)adjournmentC)adjustment D)compromiseSection B Cloze Test ( 10%，每题0.5分)Directions:There are 20 blanks in the following passage. For each blank, there are four choices marked A, B, C and D. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet with a single line through the center.race does certain During recent years we have heard much about “race”: how this things and that race believes certain things and so on. Yet, the (21) phenomenon of race consists of a few surface indications.We judge race usually (22) the coloring of the skin: a white race, a brown race, a yellow race and a (23) race. But if you were to remove the skin you could not (24) anything about the race to which the individual belonged. There is (25) in physical structure, the brain or the internal organs to (26) a difference.There are four types of blood. All (27) are found in every race, and no type is distinct to any race. Human brains are the (28) . No scientists could examine a brain and tell you the race to which the individual belonged. Brains will (29) in size, but this occurs within every race. (30) does size have anything to do with intelligence. The largest brain (31) examined belonged to a person of weak(32). On the other hand, some of our most distinguished people have had(33) brains.Mental tests which are reasonably (34) show no differences in intelligence between races. High and low test (35) both can be recorded by different members of any race. (36) equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.Individuals of every race (37) civilization to go backward or forward. Training and education can change the response of a group of people, (38) enable them to behave in a (39) way.The behavior and ideals of people (40) according to circumstances, but they can always go back or go on to something new that is better and higher than anything in the past.21.A) complete B)full C)total D)whole22.A) between B)from C)at D)with23.A) black B)green C)pink D)yellow24.A) speak B)talk C)tell D)mention25.A) something B)everything C)anything D)nothing26.A) display B)indicate C)demonstrate D) appear27.A) types B)ranks C)classes D)sorts28.A) same B)identical C)similar D)alike29.A) remain B)increase C)decrease D)vary30.A) Only B)Or C)Nor D)So31.A) ever B)then C)never D)once32.A) health B)body C)mind D)thought33.A) big B)small C)minor D)major34.A) true B)exact C)certain D)accurate35.A) results B)reports C)factors D)details36.A) Provided B)Concerning C)Given D)Following37.A) make B)cause C)move D)turn38.A) and B)unless C)though D)hence39.A) ordinary B)peculiar C)usual D)common40.A) change B)charge C)challenge D)cheerPart II Reading Comprehension ( 40%，每题2分)Directions: There are 5 reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choicesmarked A, B, C and D. You should decide which is the BEST choice and mark the corresponding letter on Answer Sheet with a single line through the center.Passage 1 (Questions 41-44)The motivation for deep-space travel is shifting from discovery to economics. The past year has seen a flurry of proposals aimed at bringing celestial riches down to Earth. No doubt this will make a few billionaires even wealthier, but we all stand to gain: the mineral bounty and spin-off technologies could enrich us all.But before the miners start firing up their rockets, we should pause for thought. At first glance, space mining seems to sidestep most environmental concerns: there is (probably!) no life on asteroids, and thus no habitats to trash. But its consequences ---both here on Earth and in space---merit careful consideration.Part of this is about principles. Some will argue that space's "magnificent desolation" is not ours to despoil, just as they argue that our own planet's poles should remain pristine. Others will suggest that glutting ourselves on space's riches is not an acceptable alternative to developing more sustainable ways of earthly life.History suggests that those will be hard lines to hold, and it may be difficult to persuade the public that such barren environments are worth preserving. After all, they exist in vast abundance, and even fewer people will experience them than have walked through Antarctica's icy landscapes.There's also the emerging off-world economy to consider. The resources that are valuable in orbit and beyond may be very different to those we prize on Earth. Questions of their stewardship have barely been broached---and the relevant legal and regulatory framework is fragmentary, to put it mildly.Space miners, like their earthly counterparts, are often reluctant to engage with such questions. One speaker at last week's space-mining forum in Sydney, Australia, concluded with a plea that regulation should be avoided. But miners have much to gain from a broad agreement on the for-profit exploitation of space. Without consensus, claims will be disputed, investments risky, and the gains made insecure. It is in all ofour long-term interests to seek one out.41.The central claim of the passage is that space mining has positive potential but____.A)it will end up encouraging humanity's reckless treatment of the environment.B)its effects should be thoughtfully considered before it becomes a reality.C)such potential may not include replenishing key resources that are disappearingon Earth.D)experts disagree about the commercial viability of the discoveries it could yield.42.As used in the sentence underlined (Paragraph 4), "hold" most nearly means________.A)maintain B)grip C)restrain D)withstand43.According to the passage the off-planet economy such as the future of space miningin future _______.A)is inconsistent with the sustainable use of space resources.B)will be difficult to bring about in the absence of regulations.C)cannot be attained without technologies that do not yet exist.D)seems certain to affect Earth's economy in a negative way.44.Which of the following statements provides the best evidence for the answer to theprevious question?A)Some will argue that space's "magnificent desolation" is not ours to despoil, justas they argue that our own planet's poles should remain pristine.B)The resources that are valuable in orbit and beyond may be very different tothose we prize on Earth.C)One speaker at last week's space-mining forum in Sydney, Australia, concludedwith a plea that regulation should be avoided.D)Without consensus, claims will be disputed, investments risky, and the gainsmade insecure.Passage 2 (Questions 45-48)No one can be a great thinker who does not realize that as a thinker it is his first duty to follow his intellect to whatever conclusions it may lead. Truth gains more evenby the errors of one who, with due study and preparation, thinks for himself, than bythe true opinions of those who only hold them because they do not suffer themselves to think. Not that it is solely, or chiefly to form great thinkers that freedom of thinking is required. On the contrary, it is as much or even more indispensable to enable average human beings to attain the mental stature which they are capable of. There have been, and may again be, great individual thinkers in a general atmosphere of mental slavery. But there never has been, nor ever will be, in that atmosphere an intellectually active people. Where any people has made a temporary approach to such a character, it has been because the dread of heterodox speculation was for a time suspended. Where there is a tacit convention that principles are not to be disputed; where the discussion of the greatest questions which can occupy humanity is considered to be closed, we cannot hope to find that generally high scale of mental activity which has made some periodsof history so remarkable. Never when controversy avoided the subjects which are large and important enough to kindle enthusiasm was the mind of a people stirred up from its foundations and the impulse given which raised even persons of the most ordinaryintellect to something of the dignity of thinking beings.He who knows only his own side of the case knows little of that. His reasons maybe good, and no one may have been able to refute them. But if he is equally unable to refute the reasons on the opposite side; if he does not so much as know what they are, he has no ground for preferring either opinion. The rational position for him would be suspension of judgment, and unless he contents himself with that. he is either led by authority, or adopts, like the generality of the world, the side to which he feels the most inclination. Nor is it enough that he should hear the arguments of adversaries from his own teachers, presented as they state them, and accompanied by what they offer as refutations. That is not the way to do justice to the arguments. or bring them into real contact with his own mind. He must be able to hear them from persons who actually believe them; who defend them in earnest and do their very utmost for them. He must know them in their most plausible and persuasive form: he must feel the whole force of the difficulty which the true view of the subject has to encounter and dispose of; else he will never really possess himself of the portion of truth which meets and removes that difficulty. Ninety-nine in a hundred of what are called educated men are in this condition; even of those who can argue fluently for their opinions. Their conclusion may be true, but it might be false for anything they know: they have never thrown themselves into the mental position of those who think differently from them and considered what such persons may have to say; and consequently they do not, in any proper sense of the word, know the doctrines which they themselves profess. They do not know those parts of it which explain and justify the remainder; the considerations which show that a fact which seemingly conflicts with another is reconcilable with it,or that, of two apparently strong reasons, one and not the other ought to be preferred.45.The best title for this passage is_____________.A)The Age of ReasonB)The Need for Independent ThinkingC)The Value of RefutationD)How People Think46.According to the author, it is always advisable to_________.A)have opinions which can not be refutedB)adopt the point of view to which he feels the most inclinationC)be acquainted with the arguments favoring the point of view with which hedisagreesD)ignore the accepted opinions of the vast majority47.According to the author, which of the following statements is true?A)Most educated people study both sides of a question.B)Heterodox speculation will lead to many errors in thinking.C)The vast majority of people who argue fluently are acquainted with only oneside of an issue.D)It is wise to get both sides of a debatable issue from one's teachers.48.It can be inferred from the passage that the author would be most likely to agreewith which of the following statements?A)Excessive controversy prevents clear thinking.B)Periods of intellectual achievement are periods of heterodox speculation.C)The refutation of accepted ideas can best be provided by one's own teachers.D)In a period of mental slavery. no true intellectual thought is possible.Passage 3 (Questions 49-52)Contending for the rights of woman, my main argument is built on this simple principle, that if she be not prepared by education to become the companion of man,she will stop the progress of knowledge and virtue; for truth must be common to all, orit will be inefficacious with respect to its influence on general practice. And how can woman be expected to co-operate unless she knows why she ought to be virtuous? unless freedom strengthen her reason till, she comprehends her duty, and see in what manner it is connected with her real good? If children are to be educated to understand the true principle of patriotism, their mother must be a patriot; and the love of mankind, from which an orderly train of virtues spring, can only be produced by considering the moral and civil interest of mankind; but the education and situation of woman, at present, shuts her out from such investigations .... .Consider, sir, dispassionately, these observations---for a glimpse of this truth seemed to open before you when you observed, "that to see one half of the human race excluded by the other from all participation of government, was a political phenomenon that, according to abstract principles, it was impossible to explain." If so, on what does your constitution rest? If the abstract rights of man will bear discussion and explanation, those of woman, by a parity of reasoning, will not shrink from the same test: though a different opinion prevails in this country, built on the very arguments which you use to justify the oppression of woman---prescription.Consider---I address you as a legislator ---whether, when men contend for their freedom, and to be allowed to judge for themselves respecting their own happiness, itbe not inconsistent and unjust to subjugate women, even though you firmly believe that you are acting in the manner best calculated to promote their happiness? Who made man the exclusive judge, if woman partake with him the gift of reason?In this style, argue tyrants of every denomination, from the weak king to the weak father of a family; they are all eager to crush reason; yet always assert that they usurpits throne only to be useful. Do you not act a similar part, when you force all women,by denying them civil and political rights, to remain immured in their families gropingin the dark?49.According to the passage, in order for society to progress, women must______.A)enjoy personal happiness and financial security.B)follow all currently prescribed social rules.C)replace men as figures of power and authority.D)receive an education comparable to that of men.50.In the passage, the author claims that freedoms granted by society's leaders have___.A)privileged one gender over the other.B)resulted in a general reduction in individual virtue.C)caused arguments about the nature of happiness.D)ensured equality for all people.51.The author would most likely agree with which of the following statements aboutwomen in the eighteenth century?A)Their natural preferences were the same as those of menB)They needed a good education to be successful in society.C)They were just as happy in life as men were.D)They generally enjoyed fewer rights than men did.52.The intention for the passage is to dispute the idea_____A)women seem to be not naturally suited for the exercise of civil and politicalrights.B)men and women possess similar degrees of reasoning ability.C)women do not need to remain confined to their traditional family duties.D)the principles of natural law should not be invoked when considering genderroles.Passage 4 (Questions 53-56)The history of mammals dates back at least to Triassic time. Development was retarded. however, until the sudden acceleration of evolutional change that occurred in the oldest Paleogene. This led in Eocene time to increase in average size. larger mental capacity, and special adaptations for different modes of life. In the Oligocene Epoch, there was fun her improvement, with some appearance of some new lines and extinction of others. Miocene and Pliocene time was marked by culmination of severalgroups and continued approach toward modem characters. The peak of the career of mammals in variety and average large size was attained in the Miocene.The adaptation of mammals to almost all possible modes of life parallels that ofthe reptiles in Mesozoic time. and except for greater intelligence, the mammals do not seem to have done much better than corresponding reptilian forms. The bat is doubtless a better flying animal than the pterosaur. but the dolphin and whale ore hardly more fishlike than the ichthyosaur. Many swift-running mammals of the plains, like the horse and the antelope. must excel any of the dinosaurs. The tyrannosaur was a more ponderous and powerful carnivore than any flesh-eating mammal, but the lion or tigeris probably a more efficient and dangerous beast of prey because of a superior brain. The significant point to observe is that different branches of the mammals gradually filled themselves for all sorts of life, grazing on the plains and able to run swiftly (horse, deer, bison), living in rivers and swamps (hippopotamus, beaver). dwelling in trees (sloth, monkey). digging underground (mole, rodent), feeding on flesh in the forest (tiger) and plain (wolf), swimming in the sea (dolphin, whale, seal) and flying in the air (bat). Man is able by mechanical means to conquer the physical world and to adapt himself to almost any set of conditions.This adaptation produces gradual changes of form and structure. It is biologically characteristic of the youthful, plastic stage of a group. Early in its career, an animal assemblage seems to possess capacity for change, which. as the unit becomes old and fixed, disappears. The generalized types of organisms retain longest the ability to make adjustments when required, and it is from them that new, fecund stocks take origin---certainly not from any specialized end products. So, in the mammals. we witness the birth, plastic spread in many directions, increasing specialization, and in some branches. the extinction. which we have learned from observation of the geologic record of life is a characteristic of the evolution of life.53.In chronological order, the geologic periods are________ .A)Paleogene. Miocene, Triassic, MesozoicB)Mesozoic. Triassic, Paleogene. MioceneC)Miocene. Paleogene, Triassic, MesozoicD)Triassic', Mesozoic, Paleogene, Miocene54.From this passage, we may conclude that the pterosaur_______.A)resembled the batB)was a mammal that lived in the Mesozoic periodC)was a flying reptileD)evolved during the Miocene period55.That the mammals succeeding the reptile in geologic time were superior isillustrated by the statement that the__________.A)tiger has a brain that surpasses that of the tyrannosaurB)deer run. more swiftly than the lionC)whale is more fishlike than the ichthyosaurD)tiger is more powerful than the carnivorous reptiles56.The statements made by the writer are based on evidence ________A)found by studying fossil remainsB)found by comparing animals and reptilesC)found by going to different time periodsD)that cannot be definitely establishedPassage 5(Questions57-60)Socrates gives us a basic insight into the nature of teaching when he compares the art of teaching to the ancient craft of the midwife. Just as the midwife assists the bodyto give birth to new life, so the teacher assists the mind to deliver itself of ideas, knowledge, and understanding. The essential notion here is that teaching is a humble, helping art. The teacher does not produce knowledge or stuff ideas into an empty, passive mind. It is the learner, not the teacher, who is the active producer of knowledge and ideas.The ancients distinguish the skills of the physician and the farmer from those ofthe shoemaker and the house builder. Aristotle calls medicine and agriculture cooperative arts, because they work with nature to achieve results that nature is able to produce by itself. Shoes and houses would not exist unless men produced them; but the living body attains health without the intervention of doctors, and plants and animalsgrow without the aid of farmers. The skilled physician or farmer simply makes healthor growth more certain and regular.Teaching, like farming and healing, is a cooperative art which helps nature do what it can do itself --- though not as well without it. We have all learned many things without the aid of a teacher. Some exceptional individuals have acquired wide learning and deep insight with very little formal schooling. But for most of us the process of learning is made more certain and less painful when we have a teacher's help.One basic aspect of teaching is not found in the other two cooperative arts that work with organic nature. Teaching always involves a relation between the mind of one person and the mind of another. The teacher is not merely a talking book, a living phonograph record, broadcast to an unknown audience. He enters into a dialogue with his student. This dialogue goes far beyond mere "talk," for a good deal of what is taught is transmitted almost unconsciously in the personal interchange between teacher andstudent. We might get by with encyclopedias, phonograph records, and TV broadcasts if it were not for this intangible element, which is present in every good teacher-student relation.Speaking simply and in the broadest sense, the teacher shows the student how to find out, evaluate, judge, and recognize the truth. He does not impose a fixed content of ideas and doctrines that the student must learn by rote. He teaches the student how to learn and think for himself. He encourages rather than suppresses a critical and intelligent response.The student's response and growth is the only reward suitable for such a labor of love. Teaching, the highest of the cooperative arts, is devoted to the good of others. It is an act of supreme generosity. St. Augustine calls it the greatest act of charity.57.Socrates compares the art of teaching to the ancient craft of the midwifebecause______.A)both teaching and midwifery are lowly professionsB)the teacher delivers knowledge while the midwife delivers the babyC)both the body and the mind are of equal importanceD)both the teacher and the midwife playa helping role58.The skills of the physician and the farmer differ from those of the shoemaker andthe house builder in that_________.A)healing and fanning demand greater skillB)healing and fanning playa more important role in societyC)healing and farming need the cooperation of natureD)healing and farming command more respect59.The chief difference between a teacher and a farmer is that_________.A)teaching involves interaction between two mindsB)farming involves working with organic natureC)teaching transmits knowledge which is intangibleD)farming produces crops which are tangible60.According to the passage the role of a teacher is________.A)to evaluate, judge, and recognize the truthB)to make the student memorize what he teachesC)to impose his ideas and doctrines on the studentD)to encourage critical thinking in the student。

计算机考博英语试题及答案Introduction:In the field of computer science, obtaining a doctoral degree is a significant achievement. To attain this goal, candidates are required to pass an examination that tests their knowledge in various areas. Among these, the English language proficiency is essential for researchers to communicate effectively and contribute to the global scientific community. In this article, we will provide a sample of computer-based examination questions for the English section, along with the corresponding answers to help candidates prepare for the exam.Section 1: Reading ComprehensionInstructions: Read the following passage and answer the questions that follow.[Passage]Question 1: According to the passage, what is the purpose of the computer-based examination?Answer: The computer-based examination aims to assess the English language proficiency of candidates pursuing a doctoral degree in computer science.Question 2: What is one benefit mentioned in the passage of passing the examination?Answer: Passing the examination demonstrates an ability to communicate effectively with other researchers in the global scientific community.Question 3: What skills or abilities are required to succeed in the examination?Answer: Candidates are required to have a strong understanding of the English language, including reading comprehension, vocabulary, and grammar.Section 2: Vocabulary and GrammarInstructions: Choose the correct word or phrase to complete each sentence.Question 1: The researchers conducted a _______ investigation to gather data for their study.a) thoroughb) throughc) thoughQuestion 2: _______ the challenging nature of this problem, the team was able to find a solution.a) Despiteb) Althoughc) In spiteQuestion 3: The professor's lecture was so _______ that many students struggled to follow along.a) confusinglyb) confusionc) confusedSection 3: WritingInstructions: Write a short essay (about 300 words) on the following topic.Topic: The Impact of Artificial Intelligence on SocietyIn recent years, the advancement of artificial intelligence (AI) has significantly impacted various aspects of society. This essay will discuss the positive and negative effects of AI on different sectors, including the economy, healthcare, and education.Firstly, AI has revolutionized the economy by increasing efficiency and productivity. Automation of tasks that were once time-consuming allows businesses to operate at higher speeds and reduces costs. However, concerns arise regarding job displacement as AI systems continue to replace human labor in certain industries.Secondly, AI has transformed the healthcare sector by enabling more accurate medical diagnoses and personalized treatment plans. Machine learning algorithms can analyze vast amounts of patient data, leading to better outcomes and potentially saving lives. Nevertheless, ethicalconsiderations surrounding data privacy and AI decision-making must be addressed to ensure the responsible use of this technology.Lastly, AI has revolutionized education by providing personalized learning experiences. Intelligent tutoring systems can adapt to individual students' needs, enhancing their understanding and engagement. On the other hand, some argue that reliance on AI for education could lead to a lack of social interaction and critical thinking skills among students.In conclusion, artificial intelligence has undoubtedly had a significant impact on society. While it presents numerous benefits such as increased efficiency and improved healthcare outcomes, ethical considerations and potential challenges remain. To fully harness the potential of AI, it is crucial to find a balance between technological advancements and social responsibility.Conclusion:In conclusion, the computer-based English examination for the computer science doctoral degree is essential for assessing candidates' language proficiency. This article provided a sample of the examination, including reading comprehension, vocabulary, grammar, and writing sections. By familiarizing themselves with these sample questions and answers, candidates can better prepare for the exam and improve their chances of success. Good luck!。