四级模拟考试题目

1、.大学英语四级考试模拟试题part iwriting(30 minutes)directions : for this part you are allowed 30 minutes to write an essay based on the outline below. you should write at least 120 words，and base your composition on the outline given below in chinese.现在社会上越来越多人开始在网上购买商品了，对此你有什么看法呢?1. 很多人开始在网上购买商品2. 网上购物可能存在的问题3.

2、 我的看法the quality of productspart iireading comprehension (skimming and scanning)(15 minutes)directions:in this part, you willhave 15 minutes to go over the passage quickly and answer the questions on answersheet1.for questions 1-7, marky (for yes) if the statement agrees with the information given i

3、n the passage; n (for no) if the statement contradicts with the information given in the passage; ng (for not given) if the information is not given in the passage;for questions 8-10, complete the sentences with the information given in the passage.one in three of us will get cancer at some point in

4、 our lives. once so feared its name was whispered, the disease is no longer an inevitable death sentence. today, almost two-thirds of those who develop cancer will still be alive five years later, compared with just half in 1970s.cancer has turned out to be tougher to crack than everyone hoped when

5、u.s. president richard nixon launched thewar on cancer in 1971.but death rates are falling, thanks to earlier detection of tumors (肿瘤 )and improved use of existingtreatments mainly chemotherapy and radiotherapy .the success has been biggest for children: since the mid-1970s, deathrates from cancers

6、of childhood have halved.innerworkings.a key reason why cancer patients are living longer is that scientists now understand more clearly what happens when cells turn cancerous. cancer begins when genes which normally control cell division, growth and repair are damaged through mutation( 突变 ).these g

7、enes can then cause cells to grow and divide uncontrollably, destroying neighboring healthy cells.mutations can arise by chance errors in dna replication,and genes can also be damaged by carcinogens(致癌物质 )such as tobacco chemicals, benzene, and some food additives or ultraviolet light from sunshine.

8、 certain viruses canalso trigger gene mutations, such as the human papilloma ( 乳突淋瘤 ) virus that can cause cervical( 子宫颈的 ) cancer.some mutated genes are inherited: two examples are brca1 and brca2 , which together account for about 5% of allbreast cancer cases. other genes such as dbc2, emsy and fa

9、 have been implicated in ovarian, breast and lung cancer.once a cell has turned cancerous, it divides until a mass of cells forms a tumor. diagnostic tests can quickly distinguishbetween malignant, or cancerous, tumors and those that are benign, or harmless. as a malignant tumor progresses, cells or

10、clumps of cells break off and spread, around the body via the lymphatic system andblood vessels.the latest generation of treatments exploitour knowledge of what happens withincancerous cells. these targetproteins and messenger chemicals such as growth factors or enzymes that the errant cells need to

11、 survive and grow.prevalence patternsin developed countries, the cancer most likely to afflict you is non-melanoma skin cancer, often caused by the sunsharmfulultravioletrays. this is usually treated and cured. melanoma, a deadlier skin cancer, is less common but is.increasing by around 3% a year in

12、 the u.s. though uv light is the cause of many skin cancers, there is some evidence that small amounts may also help prevent other cancers. in the developing world the most common cancers are linked to infectious agents, such as cervical cancer or liver cancer, caused by hepatitis （肝炎） b.the biggest

13、 killer in industrialized nations remains lung cancer. for men, lung cancer mortality has been falling since1990, mirroring a peak in popularity of smoking during the 1960s. for women, who commonly took up smoking later, lungcancer mortality is stillrising. tobacco is also rapidly becoming the leadi

14、ng cause of cancer in asia.breast cancer accounts for almost one in three of all cancers diagnosed in women each year. for men, prostate canceris just as common ， with the highest rates in african american men and caribbean men of african origin.screening for both of these diseases has improved shar

15、ply. early breast tumors show up on a mammogram （乳房 x 线照片） long before they can be felt as a lump. more women now survive the disease three-quarters of women whosebreast cancer was diagnosed 10 years ago are still alive today.similarly ， a prostate-specific antigen(psa)test has revolutionized early

16、diagnosis for this cancer in the u.s.some experts argue that screening can be harmful ， however. factoring in riskdozens of factors affect an individuals risk of getting cancer.smoking is the biggest single risk factor with tobacco linked to about a third of all cancers.another clearly established r

17、isk factor is exposure to ionizing （电离） radiation.this may be responsible for cancers in people living around chernobyl in ukraine, toikamura in japan and for people working in nuclear power plants.radiation may also have led to a high incidence of cancer in those who witnessed early nuclear tests o

18、r have been in contact with depleted uranium munitions, though a recent study contests this risk.risk factors for developing breast cancer include:being childless or delaying childbearing until aged over 30,starting periods early,using hormone replacement therapy， being exposed to oestrogen-like( 雌性

19、素类的 ) chemicals,and drinking one or more units of alcohol daily. more than one risk factor is usually needed before cancer cells develop.risks posed by living near overhead power lines or petrol stops,or using cell-phones,are less clear. preventative stepsif everyone stopped smoking, cancer deaths c

20、ould be cut by one-third, researchers estimate. moves to protect people from passive smoking, in bars for example, are gaining ground in many industrialized countries.staying out of sunlight and using strong sunscreens could prevent hundreds of thousands of us from developing skincancer worldwide an

21、nually. foods rich in antioxidants and beneficial fatty acids such as omega-3 and oleic acid found inolive oil a key ingredient of the healthy mediterranean diet seem to protect against some cancers, although thefindings are mixed.doctors can increasingly intervene directly to prevent cancers. for e

22、xample, vaccines against hepatitis b could sooncut deaths from liver cancer . there are also preventive therapies that interfere with the production of the hormone oestrogen, implicated in many breast cancers. doctors believe that it could have the rates of breast cancer in women with a family histo

23、ry of the disease.all this means that, while hopes of total cure for cancer are still unrealistic, the disease is increasingly under control.注意： 此部分试题在答题卡1 上作答； 810 题在答题卡1 上。1、 the biggest killer in china is liver cancer.2、 some viruses will give rise to gene mutations , which will result in cancers

24、.3、 in the 1970s,only one-third of those who developed cancer could be alive five years later.4、 sunbathing helps us prevent ourselves from developing skin cancer.5、 non-melanoma skin cancer is a deadly skin cancer.6、 cancer patients are living longer than before because scientists know more about c

25、ancerous cells.7、 mutated genes which are inherited account for about 5% of all cancer cases.8、 generally , one-third of people will get cancer at some point.9、 about of all cancers have something to do with tobacco.10、 it is true that for cancer is still impossible but the disease is increasingly u

26、nder control.part iiilistening comprehension(35 minutes)section adirections: in this section, you will hear 8 short conversations and 2 long conversations. at the end of each conversation, one or more questions will be asked about what was said. both the conversation and the questions will be spoken

27、 only once. after each question there will be a pause. during the pause, you must read the four choices marked a), b), c) and d), and decide which the best answer is. then mark the corresponding letter on answer sheet 2 with a single line through the centre.注意： 此部分试题在答题卡2 上作答。11、a)the woman should h

28、ave taken bus number 15.b) the woman got on the bus to grand theatre.c) the woman should have asked the conductor.d) the woman was going in the opposite direction.12、 a)the next train for boston will run a bit late because of the weather.b) the next train for boston will run on time despite the weat

29、her.c) the next train from boston will be late as it is raining heavily.d) the train for boston will be late as it is foggy.13、 a)stay at home and review the lesson.b) stay at home and have a good rest.c) go somewhere else.d) go to the concert.14、 a)the tv program after the news report.b) whether th

30、ere is a documentary about the middle east.c) the news headlines on todays newspaper.d) the man s feeling about the documentary.15、 a)at a supermarket.b) at a bakery.c) at an ice-cream house.d) at a restaurant.16、 a)alan is very careless.b) alan is weak in health.c) alan has good friends.d) alan is

31、disappointed.17、 a) its not worth seeing at all.b) its better than tv programs anyway.c) its a good change for someone who stays at home for a long time.d) its a bit terrible.18、 a)she has a pain in her neck.b) she is very busy with work.c) she feels weak.d) she works in the laundry.questions 19 to

32、22 are based on the conversation you have just heard.19、 a)at the airport.b) at the travel agency.c) at the railway station.d) at the information center.20、 a)every 24 hours.b) every 22 and a half hours.c) every morning.d) every noon.21、 a)at 11:40 monday.b) at 11:40 wednesday.c) at 22:30 tuesday.d)

33、 at 22:30 wednesday.22、 a)the passenger has booked a train ticket.b) the passenger has booked a plane ticket.c) the passenger hasntdecided whether he will go by train or by plane.d) the passenger will come back to book a train ticket.questions 23 to 25 are based on the conversation you have just hea

34、rd.23、 a)the goods were damaged when the workers unloaded them.b) the goods were not the same size as they had ordered.c) the quality of the goods was not what they had ordered.d) they had some trouble unloading the goods ordered. 24、 a)the shipping department in carpenter and sons.b) the shipping d

35、epartment in schreiner international.c) the person in charge of ordering the goods.d) the person in charge of unloading the goods.25、 a)he would give the customer some discount for the load and ship a load of right quality.b) he would call back and tell the customer when to deliver the goods.c) he w

36、ould check the stock position and then decide when to send the goods.d) he would check on the computer so as to see what discount he could give her.section bdirections: in this section, you will hear 3 short passages. at the end of each passage, you will hear some questions. both the passage and the

37、 questions will be spoken only once. after you hear a question, you must choose the best answer from the four choices marked a),b),c) and d). then mark the corresponding letter on answer sheet 2 with a single line through the center.注意： 此部分试题请在答题卡2 上作答。passage onequestion 26 to 28 are based on the p

38、assage you have just heard 26、 a)it refers to facial expressions and gesturesb) it refers to movements of the bodyc) it means the non-verbal language or body languaged) it refers to the nodding or shaking of one s head 27、 a)because some sounds are hard to pronounceb) because there are sharp differe

39、nces in culturesc) because there is no good language environmentd) because we may not understand non-verbal signals of another culture 28、 a)by avoiding eye contact with himc) by nodding your head up and downb)by directly looking into his eyes d) by listening to him attentivelypassage twoquestions 2

40、9 to 31 are based on the passage you have just heard.29、 a) its a new method to measure a country s production.b) its a way to study the economies of different countries.c) its a new system to help make economic decisions.d) its a means to understand a country s economic changes.30、 a)gnp does not i

41、nclude earnings of companies operating in foreign countries.b) gdp counts only goods and services produced within the nation s borders.c) gdp refers to earnings from home-made products.d) earnings by foreign-owned companies are not included in gdp.31、 a)because economic experts generally approve gdp

42、.b) because most industrial countries used gdp.c) because gdp provides a truer measure of a country s economy.d) because gdp is easier to be understood.passage threequestion 32 to 35 is based on the passage you have just heard.32、 a)they handed in stained resumes.b) they are not supposed to be trust

43、ed with a job.c) they even cannot spell the name of the company.d) they are irresponsible.33、 a)we should struggle over little things at the cost of something larger we work toward.b) keep losing the forest for the trees.c) we must constantly pay great attention to every detail we encounter.d) we sh

44、ould work hard on the relevant details.34、 a)attention to details is most important in undertaking a task.b) having in mind a clear goal helps judge the importance of necessary detailed tasks.c) a goal can be achieved despite some minor faults.d) only with attention to every detailed task can there

45、be success.35、 a) details should be paid attention to at any costb) too much attention to details is harmfulc) when applying for a job, you should pay enough attention to detailsd) it is necessary to pay reasonable attention to details.section cdirections :in this section ,you will hear a passage th

46、ree times .when the passage is read for the first time, you shouldlisten carefully for its general idea .when the passage is read for the second time ,you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard .for blanks numbered from 44 to 46 you are req

47、uired tofill in the missing information .for these blanks ,you can either use the exact words you have just heard or write down themain points in your own words .finally,when the passage is read for the third time ,you should check what you havewritten .注意： 这部分试题请在答题卡2 上作答the food we eat seems to ha

48、ve （ 36） effects on our health. although science has made（37） steps in making food more fit to eat , it has , at the same time , made many foods （ 38） to eat . some research has shown that perhapseighty percent of all human illness are related to diet and forty percent of cancer is related to the di

49、et as well ,（ 39）cancer of the colon . different cultures are more prone to（ 40）certain illnesses because of the food that is （41）in these cultures . that food is related to illness is not a new（42） . in 1945 , government researchers realizedthat nitrates( 硝酸盐 ) commonly used to（ 43 ）color in meats

50、, and other food additives , caused cancer .yet , thesecarcinogenic ( 致癌的 ) additives remain in our food , and （ 44） . theadditives which we eat are not all so direct. farmers often give penicillin to beef and poultry , and because of this,（ 45 ）, but for financial reasons . the farmers are simply t

51、rying to fatten the animals inorder to obtain a high price on the market.（ 46） .part ivreading comprehension (reading in depth)(25 minutes)section adirections: in this section, there is passage with ten blanks .you are required to select one word for each blank from a list of choices given in a word

52、 bank following the passage .read the passage through carefully before making your choices .eachin the bank is indentified by a letter .please mark the corresponding letter for each item on answer sheet 2 with a single line through the center . you may not use any of the words in the bank more than

53、once.questions 47 to 56 are based on the following passage.time spent in a bookshop can be most enjoyable ,47)_ you are a book lover or merely there to buy a book as apresent .whatever the reason ,you can soon become totally 48)_ of your surroundings .you soon become engrossed in some books ,and usu

54、ally it is only much later that you realize you have spent far too much time there and must 49)_ off to keep some forgotten appointment without buying a book ,of course .this opportunity to escape the realities of everyday life is, i think, the main 50) _ of a bookshop .a music shop is very much lik

55、e a bookshop .you can wander round such place to your heart s51) _. if it is a good shop, no assistant will approach you with the inevitable greeting. “can i help you, sir?”you need not buy anything you don twant .in a bookshop, anassistant should remain in the background until you have finished 52)

56、 _ .then, and only then, are his services necessary.you have to be careful not to be attracted by the 53) _ of books in a bookshop .it is very easy to enter the shop looking for a book on ancient coins and to come out carrying a copy of the 54) _ best-selling novel and perhaps a bookabout brassrubbing something which had only vaguely interested you up until then. this volume on the subject ,ho