大学四级-17及答案解析.doc

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1、大学四级-17 及答案解析(总分：710.00，做题时间：90 分钟)一、BPart Writing(总题数：1，分数：103.00)1.大学生使用手机增多及其原因 2大学生使用手机所带来的问题 3你自己的观点（分数：103.00）_二、BPart Reading (总题数：1，分数：70.00)Directions：For questions 1-7，choose the best answer from the four choices marked A)，B)，C)and D)For questions 8-10，complete the sentences with the in fo

2、rmation given in the passage EarthquakeCan Scientists Predict Killer Earthquakes? The date was November 23，1980People near Naples，in Southern Italy，felt the earth roll and shake. Earthquake! Suddenly buildings came tumbling down. Cracks appeared in the earthWithin minutes，entire towns were destroyed

3、Thousands of people were deadThousands more were injuredAs rescuers searched through the rubble，many people must have wondered，if only the victims had known ahead of time，many lives could have been savedActually，an Italian scientist did predict that such a quake would happenIn 1977 DrMCaputo of the

4、Universite Degiles Studi in Rome warned that a large quake would soon strike the east of NaplesUnfortunately，he couldnt predict the exact time and date of the quakeDrCaputo made his general prediction after talking with scientists at 54 earthquake-monitoring stations throughout ItalyHe learned that

5、many earthquakes had recently rocked different areas around NaplesBut none had occurred in one particular spot east of Naples for many yearsDr. Caputo felt that the area was long overdue for a large quakeAnd it wasEarthquake Strikes in Gap The quake occurred in a region that Dr.Caputo called a seism

6、ic gapA seismic gap is an area in an active earthquake region where no earthquake or seismic activity has been recorded in a long timeSeismic gaps are located where two large plates in the earth have become stuckWhen the plates slide past each other，they sometimes became locked in placeA similar thi

7、ng happens when you make a running leap on a sidewalk while wearing sneakersWhen you 1and on both feet，the sneakers grab onto rough surfaceFriction tends to hold your feet back while the rest of your body goes forwardYou may end up falling flat on your faceIn the case of plates，however，the uneven su

8、rfaces between the plates cause the plates to remain locked in place for yearsHuge pressure builds up behind each platePeriodically，a shudder，or tremor，is recorded as some of this energy is releasedFinally，after about 50 years，rock in the seismic gap either suddenly breaks or moves under the great s

9、tressThis sudden release of energy sends shock waves through the rock layers aboveThe ground shakes，sidewalks crack，and buildings tumbleA mighty quake has struckGaps Used to Predict Quakes Many geologists have used what is called the seismic gap technique to accurately predict earthquakesThe techniq

10、ue was first developed by Soviet earthquake expert Dr.V.Fodotov during his studies of ancient and recent Japanese earthquakesDr.Fodotov was marking the location，size，and date of all known quakes in Japan when he noticed a striking patternAll major earthquakes were found to occur in only a few isolat

11、ed spots in JapanEach of these spots，he noted，experienced a major quake only once every 50 to 60 yearsDr.Fodotov concluded that spots that hadnt had a quake in more than 50 years were “ripe” for a quakeThe Russian scientist named these locations seismic gapsIn the past several years，geologists from

12、other countries have found seismic gaps in other parts of the worldAfter making detailed studies of past quakes in these regions，the geologists were able to make an accurate prediction of when a quake would occurHow Do Animals Know When an Earthquake Is Coming? Scientists who try to predict earthqua

13、kes have gotten some new helpers recently-animalsThats right，animalsScientists have begun to catch on to what farmers have known for thousands of yearsAnimals often seem to know in advance that an earthquake is coming，and they show their fear by acting in strange waysBefore a Chinese quake in1975，sn

14、akes awoke from their winter sleep early only to freeze to death in the cold airCows broke their halters and tried to escapeChickens refused to enter their coopAll of this unusual behavior，as well as physical changes in the earth，alerted Chinese scientists to the coming quake. They moved people away

15、 from the danger zone and saved thousands of livesOne task for scientists today is to learn exactly which types of animal behavior predict quakes. Its not an easy jobFirst of all not every animal reacts to the danger of an earthquakeJust before a California quake in 1977，for example，an Arabian stall

16、ion became very nervous and tried to break out of his stallThe horse next to him，however， remained perfectly calmIts also difficult at times to tell the difference between normal animal restlessness and “earthquake nerves”A zookeeper once called earthquake researchers to say that his cougar had been

17、 acting strangelyIt turned out that the cat had an upset stomachA second task for scientists is to find out exactly what kind of warnings the animals receiveThey know that animalssense far more of the world than humans doMany animals can see，hear，and smell things that people do not even noticeSome c

18、an detect tiny changes in air pressure，gravity，or the magnetism of earthThis extra sense probably helps animals predict quakesA good example of this occurred with a group of dogsThey were penned up in an area that was being shaken by a series of tiny earthquakesSeveral small quakes often come before

19、 or after a large oneBefore each quake a low booming sound was heardEach boom caused the dogs to bark wildlyThen the dogs began to bark during a silent periodA scientist who was recording tile quakes looked at his machineIt was acting as though there was a loud noise tooThe scientist realized that t

20、he dogs had reacted to a booming noiseThey also sensed the tiny quake that followed itThe machine recorded both，though humans felt and heard nothingIn this case there was a machine to monitor what the dogs were sensingMany times，however，our machines record nothing out of the ordinary，even though ani

21、mals know a quake is comingThe animals might be sensing something we do measure but do not recognize as a warningDiscovering what animals sense，and learning how they know it is a danger signal，is a j ob for future scientists（分数：70.00）(1).Since_of the earthquake striking east of Naples，people there s

22、uffered heavy loss in the destruction A. no prediction had been made B. no correct prediction had been made C. no one had predicted the precise date D. no one had cared about Dr.Caputos prediction（分数：7.00）A.B.C.D.(2).A seismic gap is_ A. a region where no seismic activity has ever been recorded B. a

23、n area where no large earthquake has ever been detected C. a deep and wide crack in a large plate D. located at the junction of two interlocking plates in the earth，and where no seismic activity has been recorded for a long time（分数：7.00）A.B.C.D.(3).By describing a leaper in sneakers the author inten

24、ds to_ A. define the cause of an earthquake analogically B. warn the readers about the danger of friction C. explain how friction works D. both B and C（分数：7.00）A.B.C.D.(4).During an earthquake in China 1975，cows_ A. broke their halters and tried to escape B. awoke from their winter sleep early only

25、to freeze to death in the cold air C. refused to enter their coop D. ran away from their sheds（分数：7.00）A.B.C.D.(5).As it is used in paragraph 14，the word“cat”refers to a typical_ A. domestic cat B. cougar C. tiger D. lion（分数：7.00）A.B.C.D.(6)._can notice tiny changes in air pressure，gravity，or the ma

26、gnetism of earth A. All animals B. Some animals C. Mammals D. Men（分数：7.00）A.B.C.D.(7).The dogs mentioned in paragraph 16 had sensed_ A. nothing B. only the low booms C. only the minor quakes following the booms D. both the low booms and the minor quakes following them（分数：7.00）A.B.C.D.(8).Dr.Caputo b

27、ased his prediction upon the fact that lots of earthquakes had recently occurred in all areas around Naples but its_（分数：7.00）填空项 1:_(9).According to the authors information，once every 50 years or so，a mighty earthquake will be recorded at_（分数：7.00）填空项 1:_(10).Chinese scientists evacuated people from

28、_after they had noticed the strange behavior of some animals as well as physical changes in the earth（分数：7.00）填空项 1:_三、BPart Listenin(总题数：0，分数：0.00)四、BSection A/B(总题数：3，分数：105.00)Directions：In this section，you will hear 8 short conversations and 2 long conversationsAt the end of each conversation，on

29、e or more questions will be asked about what was saidBoth the conversation and the questions will be spoken only onceAfter each question there will be a pauseDuring the pause，you must read the four choices marked A)，B)，C)and D)，and decide which is the best answer（分数：56.00）(1). A. Posting notices on

30、bulletin boards B. Placing advertisements in newspaper C. Shopping at supermarkets D. Selling the mans old piano（分数：7.00）A.B.C.D.(2). A. Because she has red hair B. Because she looks like the missing girl C. Because she has black hair D. Because her photo is in the newspaper（分数：7.00）A.B.C.D.(3). A.

31、Pick up the package at the post office B. Deliver the package in person C. Ask the post office to have the package delivered to his home D. Consult the post office when it is open（分数：7.00）A.B.C.D.(4). A. He is suffering from the difference of time zones B. He has been studying hard at night C. He fi

32、nds biology difficult to learn D. He has not adjusted to a new culture（分数：7.00）A.B.C.D.(5). A. It could help people of all ages to avoid cancer B. It was mainly meant for cancer patients C. It might appeal more to viewers over 40 D. It was frequently interrupted by commercials（分数：7.00）A.B.C.D.(6). A

33、. The man is fond of traveling B. The woman is a photographer C. The woman took a lot of pictures at the contest D. The man admires the womans talent in writing（分数：7.00）A.B.C.D.(7). A. The man regrets being absent-minded B. The woman saved the man some trouble C. The man placed the reading list on a

34、 desk D. The woman emptied the waste paper basket（分数：7.00）A.B.C.D.(8). A. He quit teaching in June B. He has left the army recently C. He opened a restaurant near the school D. He has taken over his brothers business（分数：7.00）A.B.C.D.Questions 19 to 21 are based on the conversation you have just hear

35、d （分数：21.00）(1). A. Play basketball with friends from work B. Try out for the company baseball team C. Get in shape and compete in a cycling race D. Join a basketball club（分数：7.00）A.B.C.D.(2). A. She is worried her husband will spend too much time away from home B. She is afraid her husband will bec

36、ome a fitness freak C. She is concerned about her husbands health D. She is worried her husband watches too much TV（分数：7.00）A.B.C.D.(3). A. He should consume less salt B. He should eat less fatty foods C. He should add more protein products to his diet D. He should reduce the consumption of sugar（分数

37、：7.00）A.B.C.D.Questions 22 to 25 are based on the conversation you have just heard （分数：28.00）(1). A. A digital camera B. A TV C. A stereo D. A DVD player（分数：7.00）A.B.C.D.(2). A. She wants to buy things at a discount using the card B. She hopes to establish a good credit rating C. She doesnt want to

38、borrow money from her parents D. She is not going to pay off her credit card bill（分数：7.00）A.B.C.D.(3). A. People generally have a difficult time getting out of debt B. Students often apply for more credit cards than they need C. The interest rates on student cards are very high D. Students can come

39、up with a budget due to credit cards（分数：7.00）A.B.C.D.(4). A. She hopes that someone will give her the money B. She plans on getting rid of her student credit cards C. She is going to return the items she purchased on the card D. She is going to find a better paying job to cover her expenses（分数：7.00）

40、A.B.C.D.五、BSection B/B(总题数：3，分数：70.00)Directions：In this section，you will hear 3 short passagesAt the end of each passage，you will hear some questionsBoth the passage and the questions will be spoken only onceAfter you hear a question，you must choose the best answer from the four choices marked A)，B

41、)，C)and D)Passage One Questions 26 to 28 are based on the passage you have just heard （分数：21.00）(1). A. The importance of advertisement B. The societys great need of advertisement C. The origin of advertisement D. The prosperity of advertisement（分数：7.00）A.B.C.D.(2). A. The local governments B. Their

42、 ownersfamilies. C. Advertisements D. The audience（分数：7.00）A.B.C.D.(3). A. Advertising is personal B. Advertisements are convincing C. Advertisements are unreliable D. Advertisements are misleading（分数：7.00）A.B.C.D.Passage Two Questions 29 to 31 are based on the passage you have just heard （分数：21.00）

43、(1). A. It eliminated many factory jobs B. It allowed workers to live far from their jobs C. It gave workers opportunity for better training D. It allowed workers to spend more time at home（分数：7.00）A.B.C.D.(2). A. Increased transportation costs B. The lack of a qualified sales force C. A decline in

44、the number of customers D. Difficulty in transporting merchandise.（分数：7.00）A.B.C.D.(3). A. Because property is more valuable in the city B. Because prices are higher in downtown stores C. Because job opportunities are better in the city D. Because highway commuting has become unpleasant（分数：7.00）A.B.

45、C.D.Passage Three Questions 32 to 35 are based on the passage you have just heard （分数：28.00）(1). A. It is harmful to the body only B. It is good to personal relationship C. It is harmful to the body and mind D. It is a good change after idling for a long time（分数：7.00）A.B.C.D.(2). A. Personal relatio

46、nships should come after ones job B. People should care more about their personal relationships and relaxation C. When a job is very important，relaxation should be forgotten D. Personal relationships can help people do their jobs well（分数：7.00）A.B.C.D.(3). A. He should relax and have a chat with frie

47、nds while working B. He should not relax until he finishes his work C. He should play hard to fully relax himself D. He should shift some of his work to his colleagues（分数：7.00）A.B.C.D.(4). A. Work and play are different activities B. Work and play should be combined together C. People should play more and work less D. People should work more and play less（分数：7.00）A.B.C.D.六、BSection C/B(总题数：1，分数：77.00)Directions：In this section，you will hear a passage three timesWhen the passage is read for the first time，you should