公共英语三级-9及答案解析.doc

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1、公共英语三级-9 及答案解析(总分：110.00，做题时间：90 分钟)一、BSection Liste(总题数：2，分数：10.00)BPart A/BI You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answerA, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the questio

2、n and you will hear each dialogue ONLY ONCE./I（分数：5.00）(1).What does the man think Carol should do?（分数：1.00）A.See a doctor.B.Stay in bed for a few days.C.Get treatment in a better hospital.D.Make a phone call to the doctor.(2).What do we learn from the conversation?（分数：1.00）A.The 2:00 train will arr

3、ive earlier.B.The 2:30 train has a dining room.C.The woman prefers to take the 2:30 train.D.They are going to have some fast food on the train.(3).What do you learn about the woman from the conversation?（分数：1.00）A.She has been longing to attend Harvard University.B.Shell consider the mans suggestion

4、 carefully.C.She has finished her project with Dr. Garcias help.D.Shell consult Dr. Garcia about entering graduate school.(4).What do we learn from the conversation?（分数：1.00）A.Alice didnt seem to be nervous during her speech.B.Alice needs more training in making public speeches.C.The man can hardly

5、understand Alices presentation.D.The man didnt think highly of Alices presentation.(5).What does the man say about the weather?（分数：1.00）A.Its worse than 30 years ago.B.It remains almost the same as before.C.There are more extremes in the weather.D.There has been a significant rise in temperature.（分数

6、：5.00）(1).Where did this conversation most probably take place?（分数：1.00）A.At a publishing house.B.At a bookstore.C.In a reading room.D.In Professor Jordans office.(2).What does the woman mean?（分数：1.00）A.The man can stay in her brothers apartment.B.Her brother can help the man find a cheaper hotel.C.

7、Her brother can find an apartment for the man.D.The man should have booked a less expensive hotel.(3).What does the man say about learning English?（分数：1.00）A.Priority should be given to listening.B.Its most helpful to read English newspapers every day.C.Its more effective to combine listening with r

8、eading.D.Reading should come before listening.(4).What does the woman think of the new drug?（分数：1.00）A.It can help solve complex problems.B.It will most likely prove ineffective.C.It is a new weapon against terrorists.D.It will help detect all kinds of liars.(5).What does the woman want to do?（分数：1.

9、00）A.Help the company recruit graduate students.B.Visit the electronics company next week.C.Get a part time job on campus before graduation.D.Apply for a job in the electronics company.二、BPart B/B(总题数：4，分数：15.00)IQuestions 11-13 are based on the passage you have just heard./I（分数：3.00）(1).What is the

10、 finding of the new study of aspirin?（分数：1.00）A.It has been proven to be the best painkiller.B.It is a possible cure for heart disease.C.It can help lower high body temperature effectively.D.It reduces the chance of death for heart surgery patients.(2).In what way can aspirin help heart surgery pati

11、ents according to the doctors?（分数：1.00）A.It keeps blood vessels from being blocked.B.It speeds up their recovery after surgery.C.It increases the blood flow to the heart.D.It adjusts their blood pressure.(3).What warning did the doctors give about the use of aspirin?（分数：1.00）A.It is harmful to heart

12、 surgery patients with stomach bleeding.B.It should not be taken by heart surgery patients before the operation.C.It will have considerable side effects if taken in large doses.D.It should not be given to patients immediately after the operation.Questions 14-17 are based on the following dialogue.（分

13、数：4.00）(1).How many kinds of shoplifters are mentioned in the dialogue?（分数：1.00）A.2B.3C.4D.5(2).What is the character of the first kind of the shoplifters?（分数：1.00）A.Impulsive.B.Poor.C.Skillful at stealing.D.Highly organized.(3).Why do the “little thieves” steal?（分数：1.00）A.They want some excitement.

14、B.They want the things they cant afford.C.They want to earn money in this way.D.They do it for a living.(4).Among the three types of shoplifters, who can be found out most difficultly?（分数：1.00）A.The first kind.B.The second kind.C.The third kind.D.None of them can be found out easily.IQuestions 18-21

15、 are based on the passage you have just heard./I（分数：4.00）(1).How did the speakers friends respond to his change of interest?（分数：1.00）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.(2).What is o

16、ne of the reasons for the speaker to switch his interest to underwater exploration?（分数：1.00）A.It 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.(3).In what way does the speaker think diving

17、is similar to space travel?（分数：1.00）A.They both attract scientists attention.B.They can both be quite challenging.C.They are both thought-provoking.D.They may both lead to surprising findings.(4).What is the speakers purpose in giving this talk?（分数：1.00）A.To show how simple the mechanical aids for d

18、iving can be.B.To provide an excuse for his changeable character.C.To explore the philosophical issues of space travel.D.To explain why he took up underwater exploration.IQuestions 22-25 are based on the following passage./I（分数：4.00）(1).What was the only use of trains before the 20th century?（分数：1.0

19、0）A.The use for short-distance transportation.B.The use for day to day transportation.C.The use for long-distance transportation.D.The use for transportation of precious things.(2).What is the most popular sort of transportation today?（分数：1.00）A.The car.B.The horse.C.The train.D.The plane.(3).What w

20、as the average price of a recently made car in 1960?（分数：1.00）A.$ 2050.B.$ 2740.C.$ 4750.D.$ 1975.(4).What about the yearly income of the average family from 1950 to 19757（分数：1.00）A.Decreased.B.Fluctuated.C.Did not change at all.D.Increased.三、BSection Use o(总题数：1，分数：20.00)BText/BMost people have no i

21、dea of the hard work and worry that go into the collecting of those fascinating birds and animals that they pay to see in the zoo. One of the questions that is always asked of me isU (26) /UI became an animal collector in the firstU (27) /U.The answer is that I have always been interested in animals

22、 and zoos. According to my parents, the first word I was able to say with anyU (28) /Uwas not the conventional “mamma” or “daddy”, U(29) /Uthe word “zoo”, which I wouldU (30) /Uover and over again with a shrillU (31) /Uuntil someone, in group toU (32) /Ume up, would take me to the zoo. When IU(33) /

23、Ua little older, we lived in Greece and I had a greatU (34) /Uof pets, ranging from owls to seahorses, and I spent all my spare timeU (35) /Uthe countryside in search of fresh specimens toU (36) /Uto my collection of pets. U(37) /Uon I went for a year to the City Zoo, as a studentU (38) /U, to get e

24、xperience of the large animals, such as lions, bears, bison and ostriches, U(39) /Uwere not easy to keep at home. When I left, IU (40) /Uhad enough money of my own to be able toU (41) /Umy first trip and I have been goingU (42) /Uever since then. Though a collectors job is not an easy one and is ful

25、l ofU (43) /U, it is certainly a job which will appealU (44) /Uall those who love animals andU (45) /U.（分数：20.00）A.howB.whereC.whenD.whetherA.regionB.fieldC.placeD.caseA.clarityB.emotionC.sentimentD.affectionA.exceptB.butC.except forD.but forA.reciteB.recognizeC.readD.repeatA.volumeB.noiseC.voiceD.p

26、itchA.closeB.shutC.stopD.comfortA.grewB.was growingC.growD.grownA.manyB.amountC.numberD.supplyA.livingB.cultivatingC.reclaimingD.exploringA.increaseB.includeC.addD.enrichA.laterB.furtherC.thenD.subsequentlyA.attendantB.keeperC.memberD.aideA.whoB.theyC.of whichD.whichA.luckilyB.gladlyC.nearlyD.succes

27、sfullyA.payB.provideC.allowD.financeA.normallyB.regularlyC.usuallyD.oftenA.expectationsB.sorrowsC.excitementD.disappointmentsA.forB.withC.toD.fromA.excursionB.travelC.journeyD.trip四、BSection Readi(总题数：3，分数：30.00)BText 1/BThe predictability of our mortality rates is something that has long puzzled so

28、cial scientists. After all, there is no natural reason why 2,500 people should accidentally shoot them- selves each year or why 7,000 should drown or 55,000 die in their cars. No one establishes a quota for each type of death. It just happens that they follow a consistent pattern year after year.A f

29、ew years ago a Canadian psychologist named Gerald Wilde became interested in this phenomenon. He noticed that mortality rates for violent and accidental deaths throughout the Western world have remained oddly static throughout the whole of the century, despite all the technological advances and incr

30、eases in safety standards that have happened in that time. Wilde developed an intriguing theory called “risk homeostasis”. According to this theory, people instinctively live with a certain level of risk. When something is made safer, people will get around the measure in some way to reassert the or

31、iginal level of danger. If, for instance, they are required to wear seat belts, they will feel safer and thus will drive a little faster and a little more recklessly, thereby statistically canceling out the benefits that the seat belt confers. Other studies have shown that where an intersection is m

32、ade safer, the accident rate invariably falls there but rises to a compensating level elsewhere along the same stretch of road. It appears, then, that we have an innate need for danger.In all events, it is becoming clearer and clearer to scientists that the factors influencing our lifespan are far m

33、ore subtle and complex than had been previously thought. It now appears that if you wish to live a long life, it isnt simply a matter of adhering to certain pre cautionseating the right foods, not smoking, driving with care. You must also have the right attitude. Scientists at the Duke University Me

34、dical Center made a 15-year study of 500 persons personalities and found, somewhat to their surprise, that people with a suspicious or mistrustful nature die prematurely far more often than people with a sunny disposition. Looking on the bright side, it seems, can add years to your life span.（分数：10.

35、00）(1).What social scientists have long felt puzzled about is why_.（分数：2.00）A.the mortality rate can not be predictedB.the death toll remained stable year after yearC.a quota for each type of death has not come into beingD.people lost their lives every year for this or that reason(2).In his research

36、, Gerald Wilde finds that technological advances and increases in safety standards_（分数：2.00）A.have helped solve the problem of so high death rateB.have oddly accounted for mortality rates in the past centuryC.have reduced mortality rates for violent and accidental deathsD.have achieved no effect in

37、bringing down the number of deaths(3).According to the theory of “risk homeostasis “, some traffic accidents result from_（分数：2.00）A.our innate desire for riskB.our fast and reckless drivingC.our ignorance of seat belt benefitsD.our instinctive interest in speeding(4).By saying “. statistically cance

38、ling out the benefits that the seat belt confers“ ( Para. 2), the author means_（分数：2.00）A.wearing seat belts does not have any benefits from the statistic point of viewB.deaths from wearing seat belts are the same as those from not wearing themC.deaths from other reasons counterbalance the benefits

39、of wearing seat beltsD.wearing seat belts does not necessarily reduce deaths from traffic accidents(5).Which of the following may contribute to a longer life span?（分数：2.00）A.Showing adequate trust instead of suspicion of others.B.Eating the food low in fat and driving with great care.C.Cultivating a

40、n optimistic personality and never losing heart.D.Looking on the bright side and developing a balanced level of risk.BText 2/BWe all know that DNA has the ability to identify individuals but, because it is inherited, there are also regions of the DNA strand which can relate an individual to his or h

41、er family (immediate and extended), tribal group and even an entire population. Molecular Genealogy (宗谱学) can use this unique identification provided by the genetic markers to link people together into family trees. Pedigrees (家谱) based on such genetic markers can mean a breakthrough for family tree

42、s where information is incomplete or missing due to adoption, illegitimacy or lack of records. There are many communities and populations which have lost precious records due to tragic events such as the fire in the Irish courts during Civil War in 1921 or American slaves for whom many records were

43、never kept in the first place.The main objective of the Molecular Genealogy Research Group is to build a database containing over 100,000 DNA samples from individuals all over the world. These individuals will have provided a pedigree chart of at least four generations and a small blood sample. Once

44、 the database has enough samples to represent the world genetic make-up, it will eventually help in solving many issues regarding genealogies that could not be done by relying only on traditional written records. Theoretically, any individual will someday be able to trace his or her family origins t

45、hrough this database.In the meantime, as the database is being created, molecular genealogy can already verify possible or suspected relationships between individuals. “For example, if two men sharing the same last name believe that they are related, but no written record proves this relationship, w

46、e can verify this possibility by collecting a sample of DNA from both and looking for common markers (in this case we can look primarily at the Y chromosome(染色体),” explains Ugo APerego, a member of the BYU Molecular Genealogy research team.（分数：10.00）(1).People in a large area may possess the same DN

47、A thread because_.（分数：2.00）A.DNA is characteristic of a regionB.they are beyond doubt of common ancestryC.DNA strand has the ability to identify individualsD.their unique identification can be provided via DNA(2).The possible research of family trees is based on the fact that_.（分数：2.00）A.genetics ha

48、s achieved a breakthroughB.genetic information contained in DNA can be revealed nowC.each individual carries a unique record of who he is and how he is related to othersD.we can use DNA to prove how distant an individual is to a family, a group or a population(3).The Molecular Genealogy Research Group is building a database for the purpose of_（分数：2.00）A.offering assistance in working out genealogy-related problemsB.solving many issues without relying on traditional written recordsC.providing a pedigree chart of at least four generations in the worldD.confirming the assumption that al