公共英语四级-科学与技术及答案解析.doc

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1、公共英语四级-科学与技术及答案解析(总分：100.00，做题时间：90 分钟)一、BSection Liste(总题数：0，分数：0.00)二、BPart A/B(总题数：1，分数：5.00)For Question 1 5, you will hear a passage about future cars. While you listen, fill out the table with the information you have heard. Some of the information has been given to you in the table. Write onl

2、y 1 word in each numbered box.Future CarsPeople will be designing the _ of tomorrows cars. UU 1 /U/UWith 3 wheels instead of 4, tomorrows cars will be electrically-poweredand _ clean.UU 2 /U/UFuture cars will pick up the fuel during long journeys from a power _built into the road.UU 3 /U/UThe 2020 c

3、ar will have an interior with adults and children in a family _. UU 4 /U/UIt will become impossible for cars to _ into one another. UU 5 /U/U（分数：5.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_三、BPart B/B(总题数：1，分数：5.00)For Questions 6 10, you will hear a passage about the Internet in China. While you listen

4、, complete the sentences and answer the question. Use not more than 3 words for each answer.People all agree that the Internet has become the_ of New Economy.UU 1 /U/UDespite all the advantages mentioned above,there are also many people who are of _.UU 2 /U/UBesides the instructive information on th

5、eInternet, people are also _ violence orpornographic things.UU 3 /U/UThus those people hold a view that the Internetis not _.UU 4 /U/UWhat is the speakers advice to us? UU 5 /U/U（分数：5.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_四、BPart C/B(总题数：2，分数：10.00)For Questions 11 20, you will hear two passages. Be

6、fore listening to each one, read the questions related to it. While listening, answer each question by choosing A, B, C or D; you will hear each piece ONLY ONCE.（分数：5.00）(1).The earth is _ in the sun family. A. one of the eight fellow members B. bigger than two of the other bodies C. smaller than th

7、e other bodies D. nearer than two fellow members（分数：1.00）A.B.C.D.(2).These traveling bodies _. A. make much longer trips when they travel around the sun B. have the same traveling paths C. move along certain paths around the sun D. have their paths changed a bit（分数：1.00）A.B.C.D.(3).The gravity of ev

8、ery matter in the universe _. A. keeps the object traveling B. makes it fly off into space C. does not work among planets D. holds it to the surface（分数：1.00）A.B.C.D.(4).The pull makes the ball _. A. you throw into the air fall back to the earth B. go up into the sky C. fly around the body D. None of

9、 the above（分数：1.00）A.B.C.D.(5).Which of the following is TRUE? A. The smaller matters fly off into space. B. We do not notice the pull of the moon. C. The moon travels around the earth because of its orbit (轨道). D. The larger the bodies are, the greater their pull is.（分数：1.00）A.B.C.D.（分数：5.00）(1).Ho

10、w did the speakers friends respond to his change of interest? 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 wasnt fully prepared.（分数：1.00）A.B.C.D.(2).According to the passage, the speaker used to be _. A. a

11、 writer who is interested in space B. a philosopher who is interested in the ocean C. a university professor who is interested in research D. a mechanic who is interested in diving（分数：1.00）A.B.C.D.(3).What is one of the reasons for the speaker to switch his interest to underwater exploration? A. It

12、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.（分数：1.00）A.B.C.D.(4).In what way does the speaker think diving is similar to space travel? A. They both attract scientists attention. B.

13、They can both be quite challenging. C. They are both joyful. D. They may both lead to surprising findings.（分数：1.00）A.B.C.D.(5).What is the speakers purpose in giving this talk? A. To show how simple diving can be. B. To provide an excuse for his changeable character. C. To explore the philosophical

14、issues of space travel. D. To explain why he took up underwater exploration.（分数：1.00）A.B.C.D.五、BSection Use o(总题数：1，分数：20.00)Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank.The use of nuclear power has already spread all over the world. U U 1 /U /U

15、, scientists still have not agreed U U 2 /U /Uwhat should be done with the large amounts of waste materials that U U 3 /U /Uto increase every year. Most waste materials are U U 4 /U /Uof simply by placing them somewhere. But nuclear waste must be U U 5 /U /Uwith great care. It U U 6 /U /Udangerous r

16、adiation and it will continue to be U U 7 /U /Ufor hundreds of, thousands, even millions of years.How should we get U U 8 /U /Uof such waste material in such a way U U 9 /U /Uit will not harm the U U 10 /U /U? Where can we U U 11 /U /Udistribute it? One idea is to put this radioactive waste inside a

17、 thick container, which is U U 12 /U /Udropped to the deep bottom of the ocean. U U 13 /U /Usome scientists believe that this way of U U 14 /U /Unuclear waste could kill fish and other living things in the oceans or interfere U U 15 /U /Utheir growth. Another way to U U 16 /U /Unuclear waste is to s

18、end it into space, to the sun, U U 17 /U /Uit would be burned. Other scientists suggest that this polluting material be U U 18 /U /Uthousands of meters under the earths surface. Such underground areas must be free U U 19 /U /Upossible earthquake. Advances are being made. But it may still be many yea

19、rs U U 20 /U /Uthis problem could be finally settled.（分数：20.00）(1). A. Moreover B. However C. Therefore D. Otherwise（分数：1.00）A.B.C.D.(2). A. on B. to C. with D. in（分数：1.00）A.B.C.D.(3). A. incline B. start C. tend D. keep（分数：1.00）A.B.C.D.(4). A. drained B. dumped C. discharged D. disposed（分数：1.00）A.B

20、.C.D.(5). A. dealt B. handled C. coped D. processed（分数：1.00）A.B.C.D.(6). A. drops off B. gives off C. leaves off D. sets off（分数：1.00）A.B.C.D.(7). A. efficient B. unfavorable C. deadly D. painful（分数：1.00）A.B.C.D.(8). A. touch B. hold C. grasp D. rid（分数：1.00）A.B.C.D.(9). A. so B. which C. that D. thus

21、（分数：1.00）A.B.C.D.(10). A. environment B. situation C. location D. residence（分数：1.00）A.B.C.D.(11). A. reasonably B. rationally C. regularly D. safely（分数：1.00）A.B.C.D.(12). A. then B. even C. ever D. only（分数：1.00）A.B.C.D.(13). A. And B. But C. Still D. Thereby（分数：1.00）A.B.C.D.(14). A. scattering B. pr

22、eserving C. containing D. discarding（分数：1.00）A.B.C.D.(15). A. in B. with C. against D. at（分数：1.00）A.B.C.D.(16). A. remove B. deliver C. transport D. spread（分数：1.00）A.B.C.D.(17). A. where B. when C. there D. while（分数：1.00）A.B.C.D.(18). A. covered B. deposited C. buried D. reserved（分数：1.00）A.B.C.D.(19

23、). A. from B. of C. for D. about（分数：1.00）A.B.C.D.(20). A. until B. after C. before D. unless（分数：1.00）A.B.C.D.六、BSection Readi(总题数：0，分数：0.00)七、BPart A/B(总题数：1，分数：10.00)Read the following text. Answer the questions below the text by choosing A, B, C, or D.Since the dawn of human ingenuity, people have

24、 devised ever more cunning tools to cope with work that is dangerous, boring, burdensome or just plain nasty. That compulsion has resulted in roboticsthe science of conferring various human capabilities on machines. And if scientists have yet to create the mechanical version or science fiction, they

25、 began to come close.As a result, the modern world is increasingly populated by intelligent Ugizmos/U whose presence we barely notice but whose universal existence has removed much human labor. Our factories hum to the rhythm of robot assembly arms. Our banking is done at automated teller terminals

26、that thank us with mechanical politeness for the transaction. Our subway trains are controlled by tireless robot-drivers. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with submill

27、imeter accuracyfar greater precision than highly skilled physicians can achieve with their hands only.But if robots are to reach the next stage of laborsaving utility, they will have to operate with less human supervision and be able to make at least a few decisions for themselvesgoals that pose a r

28、eal challenge. “While we know how to tell a robot to handle a specific error,“ says Dave Lavery, manager of a robotics program at NASA, “we cant yet give a robot enough common sense to reliably interact with a dynamic world.“Indeed the quest for true artificial intelligence has produced very mixed r

29、esults. Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year of 2010, researchers lately have begun to extend that forecast by decades if not centuries.What they found,

30、 in attempting to model thought, is that the human brains roughly one hundred billion nerve cells are much more talentedand human perception far more complicatedthan previously imagined. They have built robots that can recognize the error of a machine panel by a fraction of a millimeter in a control

31、led factory environment. But the human mind can glimpse a rapidly changing scene and immediately disregard the 98 percent that is irrelevant, instantaneously focusing on the monkey at the side of a winding forest road or the single suspicious face in a big crowd. The most advanced computer system on

32、 Earth cant approach that kind of ability, and neuroscientists still dont know how we do that.（分数：10.00）(1).Human ingenuity was initially demonstrated in _. A. the use of machines to produce science fiction B. the wide use of machines in manufacturing industry C. the invention of tools for difficult

33、 and dangerous work D. the elites cunning tackling of dangerous and boring work（分数：2.00）A.B.C.D.(2).The word “gizmos“ (line 1, paragraph 2) most probably means _. A. programs B. experts C. devices D. creatures（分数：2.00）A.B.C.D.(3).According to the text what is beyond mans ability now is to design a r

34、obot that can _. A. fulfill delicate tasks like performing brain surgery B. interact with human beings verbally C. have a little common sense D. respond independently to a changing world（分数：2.00）A.B.C.D.(4).Besides reducing human labor, robots can also _. A. make a few decisions for themselves B. de

35、al with some errors with human intervention C. improve factory environments D. cultivate human creativity（分数：2.00）A.B.C.D.(5).The author uses the example of a monkey to argue that robots are _. A. expected to copy human brain in internal structure B. able to perceive abnormalities immediately C. far

36、 less able than human brains in focusing on relevant information D. best used in a controlled environment（分数：2.00）A.B.C.D.八、BPart B/B(总题数：1，分数：15.00)Read the following text carefully and then translate the underlined segments into Chinese.The differences in relative growth of various areas of scient

37、ific research have several causes. U U 1 /U /UUSome of these causes are completely reasonable results of social needs. Others are reasonable consequences of particular advances in science being to some extent self-ac-celerating./U Some, however, are less reasonable processes of different growth in w

38、hich preconceptions of the form scientific theory ought to take, by persons in authority, act to alter the growth pattern of different areas. This is a new problem probably not yet unavoidable; but it is a frightening trend. U U 2 /U /UUThis trend began during the Second World War, when several gove

39、rnments came to the conclusion that the specific demands that a government wants to make of its scientific establishment cannot generally be foreseen in detail./U It can be predicted, however, that from time to time questions, will arise which will require specific scientific answers, it is therefor

40、e generally valuable to treat the scientific establishment as a resource or machine to be kept in functional order. U U 3 /U /UUThis seems mostly effectively done by supporting a certain amount of research not related to immediate goals but of possible consequence in the future./UThis kind of suppor

41、t, like all government support, requires decisions about the appropriate recipients of funds. Decisions based on utility as opposed to lack of utility are straightforward. But a decision among projects none of which has immediate utility is more difficult. The goal of the supporting agencies is the

42、praisable one of supporting “good“ as opposed to “bad“ science, but a valid determination is difficult to make. Generally, the idea of good science tends to become confused with the capacity of the field in question to generate an elegant theory. U U 4 /U /UUHowever, the world is so made that elegan

43、t systems are in principle unable to deal with some of the worlds more fascinating and delightful aspects./U U U 5 /U /UUNew forms of thought as well as new subjects for thought must arise in the future as they have in past, giving rise to new standards of elegance./U（分数：15.00）_九、BSection Writi(总题数：

44、1，分数：25.00)1.Directions:For this part, you are required to write a composition on the topic: My View on Science and Technology. You should write an essay of 160200words and you should base your composition on the following outline:1) the benefits modern science and technology has brought to us;2) its negative effects;3) state your opinion.（分数：25.00）_