1、专业英语四级模拟试卷646及答案解析 (总分：160.00，做题时间：90分钟)一、DICTATION(总题数：2，分数：4.00)1.PART I DICTATIONDirections: Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the seco
2、nd and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work.（分数：2.00）_二、LISTENING COMPREHENS(总题数：6，分数：40.00)3.PART II LISTENING COMPREHENSI
3、ON_4.SECTION A TALKIn this section you will hear a talk. You will hear the talk ONCE ONLY. While listening, you may look at ANSWER SHEET ONE and write NO MORE THAN THREE WORDS for each gap. Make sure the word (s) you fill in is (are) both grammatically and semantically acceptable. You may use the bl
4、ank sheet for note-taking.You have THIRTY seconds to preview the gap-filling task._Farewell Speech1. Special needsCommonly defined by what a child cant do By milestones unmetBy【T1】 1 【T1】 2By experiences denied2. AH Foundations aimTo find the 【T2】 3of these children 【T2】 4Help them excel in certain
5、fieldsHelp them grow into a more【T3】 5 of society 【T3】 63. GainsSure the time here: part of our 【T4】 7 【T4】 8Helped children reach 【T5】 9 【T5】 10 Made everyday of our working 【T6】 11【T6】 12Embraced children whole-heartedlyHave abundant【T7】 13for grace【T7】 14Enjoy the little things; a skill, a hug, e
6、tc.Learn to do research, 【T8】 15, understand specialists 【T8】 16Cannot wait for the answers to come to you4. RequirementsNot the patience of a saintBut【T9】 17 【T9】 185. ThanksTo teaching staff,【T10】 19and fellow volunteers【T10】 20（分数：20.00）(1).【T1】（分数：2.00）填空项1:_(2).【T2】（分数：2.00）填空项1:_(3).【T3】（分数：2.
7、00）填空项1:_(4).【T4】（分数：2.00）填空项1:_(5).【T5】（分数：2.00）填空项1:_(6).【T6】（分数：2.00）填空项1:_(7).【T7】（分数：2.00）填空项1:_(8).【T8】（分数：2.00）填空项1:_(9).【T9】（分数：2.00）填空项1:_(10).【T10】（分数：2.00）填空项1:_5.SECTION B CONVERSATIONSIn this section you will hear two conversations. At the end of each conversation , five questions will
8、be asked about what was said. Both the conversation and the questions will be spoken ONCE ONLY. After each question there will be a ten-second pause. During the pause, you should read the four choices of A, B, C and D, and mark the best answer to each question on ANSWER SHEET TWO.You have thirty sec
9、onds to preview the questions._A.Because she was President Roosevelts wife.B.Because she was sympathetic toward women and the poor.C.Because she was already popular when her husband became president in 1933.D.Because she was unusual and did things that most women didnt do.A.She helped her husband ru
10、n for president.B.She worked in politics.C.She wanted very much to become popular.D.Her husband was sick and couldnt walk.A.Because she was not a conventional woman.B.Because she wanted to help people.C.Because she wanted peace in the world.D.Because she has a good job.A.She wanted to make a stir in
11、 the media world.B.She wanted to entertain the general reading public.C.She thought Eleanor needed to be reevaluated.D.She thought most writers didnt understand Eleanors life.A.Teaching her to have an independent life.B.Preparing political speeches for her.C.Telling her to sleep more and eat healthy
12、 food.D.Travelling together with her.A.To experience life in the country.B.To escape from the city ills.C.To invest in the real estate.D.To interact with people in the country.A.Going to the country for a vacation makes no sense at all.B.Renting a vacation house in the country is cheap.C.People can
13、enjoy the fresh air in the country.D.People can relax better in the country.A.The convenient transportation.B.The interactive social life.C.The whole car culture.D.The nice neighborhood.A.You may have fun making barbecues in the garden.B.You wont feel stuck and labeled as you do in the city.C.Its mo
14、re tolerate than living in the city.D.Its more hateful than living in the country.A.Quite lonely.B.Very safe.C.Not very convenient.D.Not particularly dangerous.三、LANGUAGE KNOWLEDGE(总题数：21，分数：42.00)6.PART III LANGUAGE KNOWLEDGEThere are twenty sentences in this section. Beneath each sentence there ar
15、e four words, phrases or statements marked A, B, C and D. Choose one word, phrase or statement that best completes the sentence.（分数：2.00）_7.We should open the windows often to let _ in.（分数：2.00）A.the fresh airB.fresh airC.a fresh airD.fresh the air8.Mr. Lee would rather we _ now, but we must go to w
16、ork.（分数：2.00）A.didnt leaveB.dont leaveC.not leaveD.hadnt left9.In Would you pass me the dictionary ?, the underlined part is _ of the sentence.（分数：2.00）A.the subjectB.the direct objectC.the complementD.the indirect object10.John turned a deaf ear to his mothers suggestion, _ he knew it to be valuabl
17、e.（分数：2.00）A.as ifB.now thatC.even thoughD.so that11.Which of the following sentences indicates COMMAND?（分数：2.00）A.You must have told her the truth.B.You must be Mr. Smith.C.All men must die.D.You must do it again.12.Which of the following is INCORRECT?（分数：2.00）A.Tom suggested that we leave earlier.
18、B.Tom suggested that we should leave earlier.C.Tom suggested leaving earlier.D.Tom suggested us to leave earlier.13.Now that you have come you_ as well stay.（分数：2.00）A.canB.shouldC.needD.may14.What does it refer to in the sentence I think it important to achieve an agreement on this issue?（分数：2.00）A
19、.IB.an agreementC.the issueD.to achieve an agreement15.In the sentence The thought came to him that maybe the enemy had fled the city , the underlined part is _.（分数：2.00）A.the appositive clauseB.the attributive clauseC.the object clauseD.the subject clause16._ you say is of no use now.（分数：2.00）A.No
20、matter whichB.No matter whatC.WhichD.Whatever17.The firemen managed to _ the fire in time.（分数：2.00）A.put offB.put downC.put outD.put up18.The current investment _ in our country are favorable, so a lot of foreign investors have come.（分数：2.00）A.conditionsB.weatherC.situationD.state19.We have to raise
21、 our prices because of the increase in the cost of_ materials.（分数：2.00）A.primitiveB.roughC.originalD.raw20.The law on drinking and driving is _ stated.（分数：2.00）A.extravagantlyB.empiricallyC.exceptionallyD.explicitly21.Critics believe that the control of television by mass advertising has_ the qualit
22、y of the programs.（分数：2.00）A.lessenedB.declinedC.affectedD.effected22.Ive forgotten his name, but may be itll _ me later.（分数：2.00）A.come toB.come throughC.come overD.come about23.Hotel guests are requested to _ their rooms by twelve noon.（分数：2.00）A.departB.abandonC.vacateD.displace24.The witness tes
23、timony is not _ with what he said earlier.（分数：2.00）A.simultaneousB.practicalC.consistentD.relevant25.I must _ your farewell right now, but on some future occasion, I hope to see you again.（分数：2.00）A.relayB.bidC.sendD.deliver26.Its raining. There is a _ possibility that she wont come.（分数：2.00）A.disti
24、nctB.distinctiveC.distinguishableD.distinguished四、CLOZE(总题数：2，分数：40.00)27.PART IV CLOZEDecide which of the words given in the box below would best complete the passage if inserted in the corresponding blanks. The words can be used ONCE ONLY.（分数：20.00）_A. claim B. advanced C. challenge D. but E. cons
25、tantlyF. declare G. piles up H. limited I. significance J. hesitatedK. and L. reduced M. regret N. scary O. totally Some years ago I was offered a writing assignment that would require three months of travel through Europe. I had been abroad a couple of times, but I could hardly 1 to know my way aro
26、und the continent. Moreover, my knowledge of foreign languages was 2to a little college French. I hesitated. How would I, unable to speak the language, 3unfamiliar with local geography or transportation systems, set up interviews and do research? It seemed impossible, and with considerable 4I sat do
27、wn to write a letter begging off. Halfway through, a thought ran through my mind: you cant learn if you dont try. So I accepted the assignment. There were some bad moments, 5by the time I had finished the trip I was an experienced traveler. And ever since, I have never 6to head for even the most rem
28、ote of places, without guides or even 7bookings, confident that somehow I will manage.The point is that the new, the different, is almost by definition 8. But each time you try something, you learn, and as the learning 9, the world opens to you. Ive learned to ski at 40, and flown up the Rhine River
29、 in a balloon. And I know Ill go on doing such things. Its not because Im braver or more daring than others. Im not But Ill accept anxiety as another name for 10and I believe I can accomplish wonders.（分数：20.00）填空项1:_填空项1:_填空项1:_填空项1:_填空项1:_填空项1:_填空项1:_填空项1:_填空项1:_填空项1:_五、READING COMPREHENSIO(总题数：11，
30、分数：30.00)29.PART V READING COMPREHENSION_30.SECTION AIn this section there are several passages followed by ten multiple-choice questions. For each question, there are four suggested answers marked A, B, C and D. Choose the one that you think is the best answer._(l)Although numbers of animals in a g
31、iven region may fluctuate from year to year, the fluctuations are often temporary and, over long periods, trivial. Scientists have advanced three theories of population control to account for this relative constancy. (2)The first theory attributes a relatively constant population to periodic climati
32、c catastrophes that decimate populations with such frequency as to prevent them from exceeding some particular limit. In the case of small organisms with short life cycles, climatic changes need not be catastrophic: normal seasonal changes in photoperiod (daily amount of sunlight), for example, can
33、govern population growth. This theorythe density-independent viewasserts that climatic factors exert the same regulatory effect on population regardless of the number of individuals in a region. (3)A second theory argues that population growth is primarily density-dependentthat is, the rate of growt
34、h of a population in a region decreases as the number of animals increases. The mechanisms that manage regulation may vary. For example, as numbers increase, the food supply would probably diminish, which would increase mortality. In addition, as Lotka and Volterra have shown, predators can find pre
35、y more easily in high-density populations. Other regulators include physiological control mechanisms: for example, Christian and Davis have demonstrated how the crowding that results from a rise in numbers may bring about hormonal changes in the pituitary (垂体) and adrenal glands (肾上腺) that in turn m
36、ay regulate population by lowering sexual activity and inhibiting sexual maturation. There is evidence that these effects may persist for three generations in the absence of the original provocation. One challenge for density-dependent theorists is to develop models that would allow the precise pred
37、iction of the effects of crowding.(4)A third theory, proposed by Wynne-Edwards and termed epideictic, argues that organisms have evolved a code in the form of social or epideictic behavior displays, such as winter roosting aggregations or group vocalizing; such codes provide organisms with informati
38、on on population size in a region so that they can, if necessary, exercise reproductive restraint. However, Wynne-Edwards theory, linking animal social behavior and population control, has been challenged, with some justification, by several studies.（分数：6.00）(1).Which of the following may be a densi
39、ty-independent factor that affects animal population?（分数：2.00）A.Famine.B.Tornadoes.C.The number of predators.D.The variety of food supply.(2).According to the Wynne-Edwards theory, epideictic behavior displays serve the function of_.（分数：2.00）A.determining roosting aggregationsB.locating foodC.attrac
40、ting predatorsD.regulating sexual activity(3).The challenge posed to the Wynne-Edwards theory by several studies is regarded by the author with _.（分数：2.00）A.complete indifferenceB.qualified acceptanceC.skeptical amusementD.perplexed astonishment(l)Science is committed to the universal. A sign of thi
41、s is that the more successful a science becomes, the broader the agreement about its basic concepts. There is not a separate Chinese or American or Soviet thermodynamics, for example; there is simply thermodynamics. For several decades of the twentieth century there was a Western and a Soviet geneti
42、cs, the latter associated with Lysenkos theory that environmental stress can produce genetic mutations. Today Lysenkos theory is discredited, and there is now only one genetics. (2)As the corollary of science, technology also exhibits the universalizing tendency. This is why the spread of technology
43、 makes the world look ever more homogeneous. Architectural styles, dress styles, musical styleseven eating stylestend increasingly to be world styles. The world looks more homogeneous because it is more homogeneous. Children who grow up in this world therefore experience it as a sameness rather than a diversity, and because their identities are shaped by this sameness, their sense of differences among cultures and individuals diminishes. As buildings become more alike, the people who inhabit the buildings become more alike. The result
