公共英语四级-409及答案解析.doc

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1、公共英语四级-409 及答案解析(总分：100.00，做题时间：90 分钟)一、Section Listening (总题数：0，分数：0.00)二、Part A(总题数：1，分数：5.00)To start with, you should select the 1Then you should turn the stool to your2What should be turned to four photos?3What should be inserted into the machine?4What do you do for the photos to come out after

2、 its finished?5（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、Part B(总题数：1，分数：5.00)The primary purpose of the talk is to explain to the students6Usually, there is heavy usage of computers especially during7Computer labs of the larger departments give priority to8The most important rule in the compute

3、r lab is that 9While using the computers, the students need to display 10（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、Part C(总题数：3，分数：10.00)Questions 11-13 are based on the following talk about the Space Shuttle Columbia. You now have 15 seconds to read Questions 11-13.（分数：3.00）(1).Which of the fol

4、lowing is not true of the Space Shuttle Columbia?（分数：1.00）A.It was the first rocket ever made in history.B.It did the first flight in 1981.C.Its first flight was of great importance in the development of space exploration.D.It can only stay in space for about a week now.(2).Why is the Space Shuttle

5、Columbia special?（分数：1.00）A.Because it is not similar to the spaceships of the previous twenty years.B.Because it has different designs and is able to return to earth and make further flights.C.Because it can be used in a variety of ways now.D.Because it can be used to establish colonies on eart(3).

6、According to the talk, what will man probably be able to do by the year 2050?（分数：1.00）A.Establish a large number of projects in Space Shuttle Columbia.B.Build permanent colonies in space.C.Construct many energy stations on the islands in the sea.D.Build filling stations in space to provide fuel for

7、cars on eartQuestions 14-16 are based on the following passage. You now have 15 seconds to read Questions 14-16.（分数：3.00）(1).What was the purpose of the professors experiments?（分数：1.00）A.To find out how clever monkeys were.B.To test the intelligence of different animals.C.To compare the difference b

8、etween man and the monkey.D.To find out how monkeys search for foo(2).Why did the professor put the food in a small box?（分数：1.00）A.To give the monkey a surprise.B.To see how the monkey ate from a box.C.To see how soon the monkey could find it.D.To find out how the monkey would open the box.(3).How d

9、id the professor watch the monkey?（分数：1.00）A.By waiting outside the door.B.By waiting inside the door.C.By kneeling down at the door.D.By putting it in a small box.Questions 17-20 are based on the following dialogue. You now have 20 seconds to read Questions 17-20.（分数：4.00）(1).What is the main topic

10、 of this conversation?（分数：1.00）A.Lunch.B.An exam.C.A class.D.A trip.(2).What topic did the essay question cover?（分数：1.00）A.Rainforest tribes in Brazil.B.Mountain tribes in Chile.C.Incas in Peru.D.Cities of Colombi(3).What is the woman upset about?（分数：1.00）A.Her paper due the next week.B.Her most rec

11、ent exam grade.C.The material on the exam.D.Not being able to get lunc(4).Where is the man going after they finish talking?（分数：1.00）A.To take a nap.B.To study.C.To play football.D.To eat lunc五、Section Use of Eng(总题数：1，分数：20.00)Only three strategies are available for controlling cancer: prevention, s

12、creening and treatment. Lung cancer causes more deaths than any other types of cancer. A major cause of the disease is not (21) known; there is no good evidence that screening is much helpful, and treatment (22) in about 90 percent of all cases. At present, therefore, the main strategy must be (23)

13、. This may not always be true, of course, as for some other types of cancer, research (24) the past few decades has produced (or suggested) some importance in prevention, screening or treatment.(25) , however, we consider not what research may one day offer but what todays knowledge could already de

14、liver that is not being delivered, then the most practicable and cost-effective opportunities for (26) . premature death from cancer, especially lung cancer, probably involve neither screening nor improved (27) , but prevention.This conclusion does not depend on the unrealistic assumption that we ca

15、n (28) tobacco. It merely assumes that we can reduce cigarette sales appreciably by raising prices or by (29) on the type of education that already appears to have a (30) effect on cigarette assumption by whitecollar workers and that we can substantially reduce the amount of tar (31) per cigarette.

16、The practicability of preventing cancer by such measures applies not only in those countries, (32) , the United States of America, because cigarette smoking has been common for decades, 25 to 30 percent of all cancer deaths now involves lung cancer, but also in those where it has become (33) only re

17、cently. In China, lung cancer (34) accounts for only 5 to 10 percent of all cancer deaths. This is because it may take as much as half a century (35) the rise in smoking to increase the incidence to lung cancer. Countries where cigarette smoking is only now becoming widespread can expect enormous in

18、crease in lung cancer during the 1990s or early in the next century, (36) prompt effective action is taken against the habit-indeed, such increase is already plainly evident in parts of the (37) .There are four reasons why the prevention of lung cancer is of such overwhelming importance: First, the

19、disease is extremely common, causing more deaths than any other type of cancer now (38) ; Secondly, it is generally incurable; Thirdly, effective, practicable measures to reduce its incidence are already reliably known; and finally, (39) tobacco consumption will also have a substantial (40) on many

20、other diseases.（分数：20.00）A.hardlyB.neverC.lessD.reliablyA.failsB.succeedsC.resultsD.risesA.treatmentB.cureC.preventionD.diagnosisA.overB.onC.fromD.nearA.AlthoughB.IfC.SinceD.UnlessA.resultingB.deducingC.avoidingD.causingA.healthB.controlC.environmentD.treatmentA.eliminateB.abolishC.cut downD.cope wi

21、thA.dealingB.expendingC.hardeningD.inspectingA.innocentB.positiveC.likelyD.moderateA.containedB.deliveringC.adoptedD.regulatedA.for exampleB.such asC.as well asD.butA.sensitiveB.tightC.widespreadD.roughA.stillB.alsoC.as yetD.alwaysA.ofB.atC.due toD.forA.ifB.unlessC.providedD.whileA.ChinaB.worldC.U.K

22、.D.globeA.hasB.emergesC.causesD.doesA.yieldB.handlingC.increasingD.reducingA.troubleB.marginsC.impactD.threat六、Section Reading Co(总题数：0，分数：0.00)七、Part A(总题数：0，分数：0.00)八、Text 1(总题数：1，分数：5.00)The destruction of our natural resources and contamination of our food supply continue to occur, largely becau

23、se of the extreme difficulty in affixing (把固定) legal responsibility on those who continue to treat our environment with reckless abandon (放任). Attempts to prevent pollution by legislation, economic incentives and friendly persuasion have been met by lawsuits, personal and industrial denial and long

24、delays-not only in accepting responsibility, but more importantly, in doing something about it.It seems that only when government decides it can afford tax incentives or production sacrifices is there any initiative for change. Where is industrys and our recognition that protecting mankinds great tr

25、easure is the single most important responsibility? If ever there will be time for environmental health professionals to come to the frontlines and provide leadership to solve environmental problems, that time is now.We are being asked, and, in fact, the public is demanding that we take positive act

26、ion. It is our responsibility as professionals in environmental health to make the difference. Yes, the ecologists, the environmental activists and the conservationists serve to communicate, stimulate thinking and promote behavioral change. However, it is those of us who are paid to make the decisio

27、ns to develop, improve and enforce environmental standards, I submit, who must lead the charge.We must recognize that environmental health issues do not stop at city limits, county lines, state or even federal boundaries. We can no longer afford to be tunnel-visioned in our approach. We must visuali

28、ze issues from every perspective to make the objective decisions. We must express our views clearly to prevent media distortion and public confusion.I believe we have a three-part mission for the present. First, we must continue to press for improvements in the quality of life that people can make f

29、or themselves. Second, we must investigate and understand the link between environment and health. Third, we must be able to communicate technical information in a form that citizens can understand. If we can accomplish these three goals in this decade, maybe we can finally stop environmental degrad

30、ation, and not merely hold it back. We will then be able to spend pollution dollars truly on prevention rather than on bandages.（分数：5.00）(1).We can infer from the first two paragraphs that the industrialists disregard environmental protection chiefly because _.（分数：1.00）A.they are unaware of the cons

31、equences of what they are doingB.they are reluctant to sacrifice their own economic interestsC.time has not yet come for them to put due emphasis on itD.it is difficult for them to take effective measures(2).The main task now facing ecologists, environmental activists and conservationists is _.（分数：1

32、.00）A.to prevent pollution by legislation, economic incentives and persuasionB.to arouse public awareness of the importance of environmental protectionC.to take radical measures to control environmental pollutionD.to improve the quality of life by enforcing environmental standards(3).The word “tunne

33、l-visioned“ (Line 2, Par（分数：1.00）A.4) most probably means “_.“A. narrow-mindedB. blind to the factsC. short-sightedD. able to see only one aspect(4).Which of the following, according to the author, should play the leading role in the solution to environmental problems?（分数：1.00）A.Legislation and gove

34、rnment intervention.B.The industrys understanding and support.C.The efforts of environmental health professionals.D.The cooperation of ecologists, environmental activists and conservationists.(5).Which of the following is true according to the last paragraph?（分数：1.00）A.Efforts should be exerted on p

35、ollution prevention instead of on remedial measures.B.More money should be spent in order to stop pollution.C.Ordinary citizens have no access to technical information on pollution.D.Environmental degradation will be stopped by the end of this decad九、Text 2(总题数：1，分数：5.00)One of the good things for m

36、en in womens liberation is that men no longer have to pay women the old-fashioned courtesies.In an article on the new manners, Ms. Holmes says that a perfectly able woman no longer has to act helplessly in public as if she were a model. For example, she doesnt need help getting in and out of cars. “

37、Women get in and out of cars twenty .times a day with babies and dogs. Surely they can get out by themselves at night just as easily.“She also says there is no reason why a man should walk on the outside of a woman on the sidewalk. “Historically the man walked on the inside so he caught the garbage

38、thrown out of a window. Today a man is supposed to walk on the outside. A man should walk where he wants to. So should a woman. If, out of love and respect, he actually wants to take the blows, he should walk on the inside-because thats where attackers are all hiding these days.“As far as manners ar

39、e concerned, I suppose I have always been a supporter of womens liberation. Over the years, out of a sense of respect, I imagine, I have refused to trouble women with outdated courtesies.It is usually easier to follow rules of social behavior than to depend on ones own taste. But rules may be safely

40、 broken, of course, by those of us with the gift of natural grace. For example, when a man and woman are led to their table in a restaurant and the waiter pulls out a chair the woman is expected to sit in. That is according to Ms. Ann Clark. I have always done it the other way according to my wife.I

41、t came up only the other night. I followed the hostess to the table, and when she pulled the chair out I sat on it quite naturally since it happened to be the chair I wanted to sit in.“Well,“ my wife said when the hostess had gone, “you did it again.“Did what?“ I asked, utterly confused.“Took the ch

42、air.“Actually, since Id walked through the restaurant ahead of my wife, it would have been awkward, I should think, not to have taken the chair. I had got there first after all.Also it has always been my custom to get in a car first and let the woman get in by herself. This is a courtesy. I insist o

43、n as the stronger sex, out of love and respect. In times like these, there might be attackers hidden about. It would be unsuitable to put a woman in a car and then shut the door on her, leaving her at the mercy of some bad fellow who might be hiding in the back seat.（分数：5.00）(1).It can be concluded

44、from the passage that _.（分数：1.00）A.men should walk on the inside of a sidewalkB.women are becoming more capable than beforeC.in womens liberation men are also liberatedD.its safe to break rules of social behavior(2).The author was “utterly confused“ because he _.（分数：1.00）A.took the chair out of habi

45、tB.was trying to be politeC.was slow in understandingD.had forgotten what he did(3).He took the chair for all the following reasons EXCEPT that _.（分数：1.00）A.he got to the chair firstB.he happened to like the seatC.his wife ordered him to do soD.hed walked ahead of his wife(4).The author always gets

46、in a car before a woman because he _.（分数：1.00）A.wants to protect herB.doesnt need to help herC.chooses to be impolite to herD.fears attacks on him(5).Which of the following best states the main idea of the passage?（分数：1.00）A.Manners ought to be thrown away altogether.B.In manners one should follow h

47、is own judgement.C.Women no longer need to be helped in public.D.Men are not expected to be courteous to women.十、Text 3(总题数：1，分数：5.00)Many United States companies have, unfortunately, made the search for legal protection from import competition into a major line of work. Since 1980 the United States

48、 International Trade Commission (ITC) has received about 280 complaints alleging damage from imports that benefit from subsides by foreign governments. Another 340 charge that foreign companies “dumped“ their products in the United States at “less than fair value“. Even when no unfair practices are

49、all alleged, the simple claim that an industry has been injured by imports is sufficient ground to seek relief.Contrary to the general impression, this quest for import relief has hurt more companies than it has helped. As corporations begin to function globally, they develop an intricate Web of marketing, production, and research relationships. The complexity of th