公共英语三级-391及答案解析.doc

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1、公共英语三级-391 及答案解析(总分：110.00，做题时间：90 分钟)一、Section Listening (总题数：0，分数：0.00)二、Part A(总题数：2，分数：10.00)(1).What do we know from the conversation?（分数：1.00）A.The man used to be a teacher.B.The woman is teaching a class of 100 children.C.The woman thinks it easy to teach.D.The man thinks it quite difficult t

2、o teach.(2).What are these people talking about?（分数：1.00）A.Best materials for making clothes.B.Things to wear.C.The warm weather.D.Something which has light color.(3).What are they talking about?（分数：1.00）A.Clothes.B.Latest news.C.A new house.D.Daily work.(4).What does the woman imply?（分数：1.00）A.The

3、man should leave the television on.B.The program will be over soon.C.Shell watch television later.D.The man should watch the program too.(5).Where did the conversation most probably take place?（分数：1.00）A.At a clinic.B.At a shop.C.In a cinema.D.At a hotel.(1).What does the man mean?（分数：1.00）A.The man

4、 would like to join them.B.The man tries to persuade the woman not to go with Tom.C.The man suggests the woman to reconsider her plan.D.The man is envious of Tom.(2).What does the weather forecast probably say about this weekend?（分数：1.00）A.It will remain cloudy.B.It will stay nice.C.It is going to r

5、ain.D.It is going to snow.(3).What did the man previously assume?（分数：1.00）A.Tony must have been to the discotheque.B.Tony doesnt care for disco.C.Tony doesnt know where the disco is.D.Tony tried to learn disco but failed.(4).Whats the probable relationship between the, two speakers?（分数：1.00）A.Doctor

6、 and patient.B.Husband and wife.C.Father and daughter.D.Shop assistant and customer.(5).Where is the womans husband?（分数：1.00）A.In the office.B.In the dining hall.C.In the lab.D.At home.三、Part B(总题数：4，分数：15.00)Questions 1114 are based on the following conversation.（分数：4.00）(1).What does Mary need to

7、do at the travel agency?（分数：1.00）A.Book a hotel in Europe.B.Buy her plane ticket.C.Sublet her apartment.D.Renew her passport.(2).Why doesnt Mary want to give up her apartment?（分数：1.00）A.She will have trouble finding another one.B.She finds it in a very good location.C.Her landlord plans to lower its

8、 rent.D.She doesnt have time to move.(3).How did Bill know Jim Tomas?（分数：1.00）A.They once studied together.B.They once lived together.C.They once worked together.D.They once traveled together.(4).What will Mary most likely do about her apartment?（分数：1.00）A.Leave it vacant.B.Ask her landlord to rent

9、it out.C.Ask one. of her friends to live in it.D.Sublet it to Jim.Questions 1517 are based on the following conversation.（分数：3.00）(1).What is the probable relationship between the two speakers?（分数：1.00）A.Classmates.B.A boy and his girl friend.C.Husband and wife.D.Roommates.(2).We can learn from the

10、dialogue that _.（分数：1.00）A.The man is very busy this weekB.The woman finds an excuse to decline the mans invitationC.Both the man and the woman are very busy this weekD.The woman is very busy this week(3).What is the woman going to do on Wednesday evening?（分数：1.00）A.She is going to come to her fathe

11、rs birthday dinner.B.She is going to finish her term paper.C.She is going to help her roommate clean up the apartment.D.She is going to meet some people in her apartment.Questions 1821 are based on the following passage.（分数：4.00）(1).When was McDonalds founded?（分数：1.00）A.In the early 1950s.B.In the l

12、ate 1940s.C.In the late 1950s.D.In the early 1940s.(2).To start with, McDonalds was（分数：1.00）A.a snack barB.a take-out restaurantC.a drive-in restaurantD.a small cafe(3).As to what QSCV stands for, which of the following is NOT true?（分数：1.00）A.CCleanliness.B.SService.C.VVariety.D.QQuality.(4).Today M

13、cDonalds pursues a principle of _.（分数：1.00）A.best service at a fair priceB.equal service without discriminationC.customer firstD.low price for the best serviceQuestions 2225 are based on the following conversation.（分数：4.00）(1).What is the best title for the dialogue?（分数：1.00）A.Looking for an apartme

14、nt.B.How to rent an apartment.C.Renting an apartment.D.Moving into an apartment.(2).Which of the following is not the convenience for the man?（分数：1.00）A.Small but modern kitchen.B.Good bus service.C.Self-service elevator.D.Parking place.(3).How does the man pay the cost of electricity and water?（分数：

15、1.00）A.It should be paid in advance.B.It is paid twice a year.C.The man should pay it beside paying the rent.D.It is included in the rent.(4).How much cheaper is an unfurnished apartment than an furnished one?（分数：1.00）A.300 dollars cheaper.B.Nearly lO0 dollars cheaper.C.Exactly 100 dollars cheaper.D

16、.More than 100 dollars cheaper.四、Section Use of Eng(总题数：1，分数：20.00)A.give offB.give awayC.give upD.give inA.mannerB.argumentC.spiritD.mindA.excessB.short-cutC.accessD.trickA.resolutionB.toolC.weaponD.instrumentA.waysB.stepsC.approachesD.responsesA.doing withoutB.putting upC.getting rid ofD.dropping

17、outA.storageB.storesC.sourcesD.resourcesA.inB.awayC.offD.upA.reduceB.protectC.restrictD.preventA.Go withB.Take upC.Bring upD.Get intoA.contentB.numberC.quantityD.amountA.put downB.turn downC.do away withD.run out ofA.for a momentB.at the momentC.at a timeD.at timesA.atB.inC.onD.forA.enjoyB.hesitateC

18、.participateD.anticipateA.largeB.enormousC.heavyD.strongA.badB.betterC.worseD.wellA.hold backB.come toC.run intoD.suffer fromA.coverB.costC.lastD.takeA.in the endB.in generalC.in a wordD.once for all五、Section Reading Co(总题数：0，分数：0.00)六、Part A(总题数：0，分数：0.00)七、Text 1(总题数：1，分数：10.00)Some animals appare

19、ntly can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins researchers said on Wednesday.The scientists said their study is the first to show that the central nervous system, reacting to environmental changes, may spark changes in the bodys immune system tha

20、t control the growth of tumors.They said if that is the ease, a better understanding of how the process works eventually could lead to new cancer treatments.Dr. Randy Nelson, an associate professor of psychology at Hopkins, stressed at a meeting of the Society of Neuroscience that further study woul

21、d be needed to confirm a connection between the length of the day, the animals immune system and cancer. More work also would be needed to show that the findings could be applied to human cancer.Dr. Faye Austin, an immunologist with the National Cancer Institute in Bethesda, said: “Its a very intrig

22、uing observation that the length of exposure to light can affect the growth of a tumour. But I think that the draws really need further work to clarify the mechanics.“But Austin said the findings were surprising and important, only because they open up a new approach for research.Studies showed that

23、 stress weakened the immune system in animals. They figured that because winter is stressful, the season probably causes exertion (影响) on the immune system.The researchers reasoned that animals that compensated by boosting (促进) their immune systems as winter approached would have a better chance of

24、surviving and producing offspring.“In the same way that animals have evolved to select the best time to breed, it struck me that animals ought to be able to predict when conditions would be challenging immunologically.“ Nelson said.（分数：10.00）(1).Dr. Nelson has drawn a conclusion that _.（分数：2.00）A.th

25、e findings of animals resistance to cancer can be applied to human cancer treatmentsB.the length of exposure to light can affect the growth of a tumorC.there is a relation between the length of the day, the animals immune system and cancerD.there is a new approach for studying the function of centra

26、l nervous system in the bodys immune system(2).Which season can strengthen the immune system in animals?（分数：2.00）A.Spring.B.Autumn.C.Winter.D.Summer.(3).On which of the following subjects can essays be presented at the meeting of the Society of Neuroscience?（分数：2.00）A.The nervous system.B.The treatm

27、ent of cancer.C.The ability to produce offspring.D.The control of the growth of tumors.(4).Animals can strengthen their immune system in preparation for winter because _.（分数：2.00）A.when season changes, the central nervous system reacts to environment and that sparks changes in the bodys immune syste

28、mB.animals have shorter exposure to light in winter than in summerC.animals have evolved to select the best time to breed and be able to predict the change of conditionsD.all of the above(5).Which statement can be the best title for this article?（分数：2.00）A.Dr. Randy Nelson and His New Findings.B.Ani

29、mals Resistance to Cancer.C.Winter and Animals Immune System.D.A Light in the Cancer Darkness.八、Text 2(总题数：1，分数：10.00)Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Ligh

30、t gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation (辐射) from the sun are screened off. As soon as men leave the atmosphere they a

31、re exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem“. Scientists have reason to think that a man can put up with

32、 far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damagea person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered un

33、til the birth of deformed (畸形的) children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks

34、 and months outside the protection of the atmosphere, working in space laboratory. Rugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.（分数：10.00）(1).According to the first paragraph, the atmosphere is essential to man in that _.（分数：2.00）A.it

35、protects him against the harmful rays from spaceB.it provides sufficient light for plant growthC.it supplies the heat necessary for human survivalD.it screens off the falling meteors(2).We know from the passage that _.（分数：2.00）A.exposure to even tiny amounts of radiation is fatalB.radiation is avoid

36、able in space explorationC.astronauts in spacesuit neednt worry about radiation damageD.the effect of exposure to radiation is slow in coming(3).The harm radiation has done to the Apollo crew members _.（分数：2.00）A.remains unknownB.is insignificantC.seems overestimatedD.is enormous(4).It can be inferr

37、ed from the passage that _.（分数：2.00）A.radiation is not a threat to well-protected space explorersB.astronauts will have deformed children or grandchildrenC.protection from space radiation is no easy jobD.the Apollo mission was very successful(5).The best title for this passage would be _.（分数：2.00）A.

38、Research on RadiationB.Effects of Space RadiationC.Importance of Protection against RadiationD.The Atmosphere and Our Environment九、Text 3(总题数：1，分数：10.00)The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the

39、 last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference. The source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic devices such as portable computers, radio and cassett

40、e players and mobile telephones.RTCA, an organization which advises the aviation industry, has recommended that all airlines ban such devices from being used during “critical“ stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flig

41、hts. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights.The difficulty is p

42、redicting how electromagnetic fields might affect an aircrafts computers. Experts know that portable devices emit radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have

43、no way of knowing whether the interference might be dangerous or not.The fact that aircraft may be vulnerable to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As a result, loud music sound makes the passenger unable to hear the instructio

44、ns turning off his radio, this is the most worrying things to airlines.（分数：10.00）(1).The passage is mainly about _.（分数：2.00）A.a possible cause of aircraft crashesB.a new regulation for all airlinesC.effective safety measures for air flightD.the defects of electronic devices(2).What is said about the

45、 over 100 aircraft incidents in the past 15 years?（分数：2.00）A.They were suspected to have resulted from electromagnetic interference.B.They may have been caused by the damage to the radio systems.C.They were proved to have been caused by the passengers portable computers.D.They may have taken place d

46、uring take-off and landing.(3).Few airlines want to impose a total ban on their passengers using electronic devices because _.（分数：2.00）A.they have other effective safety measures to fall back onB.the harmful effect of electromagnetic interference is yet to be provedC.most passengers refuse to take a

47、 plane which bans the use of radio and cassette playersD.they dont believe there is such a danger as radio interference(4).Why is it difficult to predict the possible effects of electromagnetic fields on an airplanes computers?（分数：2.00）A.Because it is extremely dangerous to conduct such research on

48、an airplane.B.Because experts lack adequate equipment to do such research.C.Because research scientists have not been able to produce the same effects in labs.D.Because it remains a mystery what wavelengths are liable to be interfered with.(5).It can be inferred from the passage that the author _.（分

49、数：2.00）A.is in favor of prohibiting passengers use of electronic devices completelyB.regards it as unreasonable to exercise a total ban during flightC.hasnt formed his own opinion on this problemD.has overestimated the danger of electromagnetic interference十、Part B(总题数：1，分数：5.00)As any woman can prove, there are some things at which her gender naturally excels. In the past decade, academic research has offered insight into the feminine advantage:Part Verbal superiority may continue from chil