大学英语-大学六级模拟62.docx

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1、大学六级模拟62Part I WritingDirections: For this part, you are allowed 30 minutes to write a composition on the topic: Ability and Good Looks. You should write at least 150 words following the outline given below:1、1.目前许多大四女生不忙求职忙相亲2 .产生这种现象的原因3 .我的看法Career or Marriage?Part II Reading Comprehension (Skimm

2、ing and Scanning)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1.For questions 1-4 z markY (for YES)if the statement agrees with the informationgiven in the passage;N (for NO)if the statement contradicts the informationgive

3、n in the passage;NG (for NOT GIVEN)if the information is not given in the passage .For questions 5-10, complete the sentences with the information given in the passage.Genetically Modified Foods - Feed the World?If you want to spark a heated debate at a dinner party, bring up the topic about genetic

4、ally modified foods. For many people, the concept of genetically altered, high-tech crop production raises all kinds of environmentalz health, safety and ethical questions. Particularly in countries with long agrarian traditions - and vocal green lobbies - the idea seems against nature.In fact, gene

5、tically modified foods are already yew much a part of our lives. A third of the corn and more than half the soybeans and cotton grown in the US last year were the product of biotechnology z according to the Department of Agriculture. More than 65 million acres of genetically modified crops will be p

6、lanted in the US this year. The genetic is out of the bottle.Yet there are clearly some very real issues thatz need to be resolved, lake any new product entering the food chain, genetically modified foods must be subjected to rigorous testing. In wealthy countz des, the debate about biotech is tempe

7、red by the fact that we have a rich array of foods to choose from - and a supply that far exceeds our needs . In developing countries desperate to feed fast-growing and underfed populations ; the issue is simpler and much more urgent: Do the benefits of biotech outweigh the risks?The statistics on p

8、opulation growth and hunger are disturbing. Last year the world * s population reached 6 billion. And by 2050 z the UN estimates, it will be probably near 9 billion. Almost all that growth will occur in developing countries. At the same time z the world * s available cultivable land per person is de

9、clining. Arable land has declined steadily since 1960 and will decrease by half over the next 50 years, according to the International Service for the Acquisition of Agri-Biotech Applications (ISAAA.How can biotech help?Biotechnologists have developed genet icallymodified rice that is fortified with

10、 beta-carotene (3-胡萝卜素)一which the body converts into vitamin A - and additional iron, mid they are working on other kinds of nutritionally improved crops. Biotech can also improve farming productivity in places where food shortages are caused by crop damage attribution to pestsz droughtz poor soil a

11、nd crop viruses, bacteria or fungi (真菌).Damage caused by pests is incredible . The European corn borer, for example, destroys 40 million tons of the world * s corn crops annual y, about 7% of the total. Incorporating pest-resistant genes into seeds can help restore the balance. In trials of pest-res

12、istant cotton in Africa, yields have increased significantly. So far, fears that genetically modified, pest-resistant crops might kill good insects as well as bad appear unfounded.Viruses often cause massive failure in staple crops in developing countries . Two years ago, Africa lost more than half

13、its cassava (WM) cropa keysource of calories - to the mosaic virus . Genetically modified, virus-resistant crops can reduce that damagez as can drought-tolerant seeds in regions where water shortages limit the amount of land under cultivation. Biotech can also help solve the problem of soil that con

14、tains excess aluminum, which can damage roots and cause many staple-crop failures . A gene that helps neutralize aluminum toxicity (毒性) in rice has been identified.Many scientists believe biotech could raise overall crop productivity in developing countries as much as 25% and help prevent the loss o

15、f those crops after they are harvested.Yet for all that promise, biotech is far from being the whole answer. In developing countries z lost crops are only one cause of hunger. Poverty plays the largest role. Today more than I billion people around the globe live on less than I dollar a day. Making g

16、enetically modified crops available will not reduce hunger if farmers cannot afford to grow them or if the local population cannot afford to buy the food those farmers produce.Biotech has its own distribution” problems. Private-sector biotech companies in the rich countries carry out much of the lea

17、ding-edge research on genetically modified crops. Their products are often too costly for poor farmers in the developing world, and many of those products won11 even reach the regions where they are most needed. Biotech firms have a strong financial incentive to target rich markets first in order to

18、 help them rapidly recoup the high costs of product development. But some of these companies are responding to needs of poor countries .More and more biotech research is being carried out in developing countries . But to increase the impact of genetic research on tile food production of those countr

19、ies, there is a need for better collaboration between government agencies - both local and in developed countries - and private biotech firms . The ISAAAZ for examplez is successfully partnering with the US Agency for International Development z local researches and private biotech companies to find

20、 and deliver biotech solutions for farmers in developing countries. Will MFranken-foodsu feed the world?Biotech is not a panacea (治百病的药),but it does promise to transform agriculture in many developing countries. If that promise is not fulfilled, the real losers will be their peoplez who could suffer

21、 for years to come.The world seems increasingly to have been divided into those who favor genetically modified (GM) foods and those who fear them. Advocates assert that growing genetically altered crops can be kinder to the environment and that eating foods from those plants is perfectly safe. And,

22、they say, genetic engineering - which can induce plants to grow in poor soils or to produce more nutritious foods - will soon become an essential tool for helping to feed the world * s burgeoning (迅速发展的) population. Skeptics contend that genetically modified crops could pose unique risks to the envi

23、ronment and to health - risks too troubling to accept placidly. Taking that view, many European countries are restricting the planting and importation of genetically modified agricultural products. Much of the debate hinges on perceptions of safety. But what exactly does recent scientific research s

24、ay about the hazards?Two years ago in Edinburgh, Scotland, eco-vandals stormed a field, crushing canola plants. Last year in Maine, midnight raiders hacked down more than 3,000 experimental poplar trees. And in San Diego, protesters smashed sorghum and sprayed paint over greenhouse walls.This far-fl

25、ung outrage took aim at genetically modified crops. But the protests backfired: all the destroyed plants were conventionally bred. In each case, activists mistook ordinary plants for genetically modified varieties.It1 s easy to understand why. In a way, genetically modified crops - now on some 109 m

26、illion acres of farmland worldwide - are invisible. You can * t see, taste or touch a gene inserted into a plant or sense its effects on theenvironment. You can * t tellz just by looking, whether pollen containing a foreign gene can poison butterflies or fertilize plants miles away. That invisibilit

27、y is precisely what worries people. How, exactly, will genetically modified crops affect the environment - and when will we notice?Advocates of genetically modified or transgenic crops say the plants will benefit the environment by requiring fewer toxic pesticides than conventional crops. But critic

28、s fear the potential risks and wonder how big the benefits really are. nWe have so many questions about these plants z * remarks Guenther Stotzky, a soil microbiologist at New York University.There 1 s a lot we don * t know and need to find out.11As genetically modified crops multiply in the landsca

29、pez unprecedented numbers of researchers have started fanning into the fields to get the missing information. Some of their recent findings are reassuring; others suggest a need for vigilance.2、 Majority of people in those countries maintaining a long history of agriculture believe .A. genetically m

30、odified crop is beneficialB. genetically modified crop causes environmental problemsC. high-tech crop is a great benefit to the worldD. genetically modified foods is a heated topic3、 How much genetically modified corn was planted in the US last year?A. More than half . B.65 million acres . C. One th

31、ird. D. Three quarters.4、 Why is the debate on genetically modified foods more heated in developing countries?A. Because they have a rich range of foods.B. Because the supplyoutstrips the need.C. Because they have to feed fast-growing populations . D. Because the risks outweigh the benefits.5、 Accor

32、ding to the UN * s prediction, the growth population from now to 2050 is nearly all in .A. western countriesB. African countriesC. developed countriesD. developing countries6、 Genetically modified crops can help to improve .A. nutrient contents and farming productivity B. beta-carotene contents in r

33、iceC. vitamin A and iron elements in cropD. attribution to resistinsects7、 What was the reason that led to the loss of more than half of African mainfood two years ago? A , Drought.The barren soil.B . Toxin in the crop.C. The mosaic virus . D.8、 The most important factor that leads to hunger in deve

34、loping countries is .A. lost cropsB. global greenhouseeffectC. economic crisisD. poverty9、 Those people and countries which are restricting and opposed to genetically modified plants worry about .10、 The far-flung outrage destroys fields andplants because they mis identified11、 Some people boost gen

35、etically modified crops on the condition that these altered plants contain .Part HI Listening ComprehensionSection ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions willbe asked about what was said. Both

36、 the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause z you must read the four choices markedA. z B. z C. andD., and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through th

37、e center.12、 A. At a bank.B. At a travel agency.C. At a post office.D. At an airport.13、 A. This is the first time for the man to wear a tie.B. He looks wonderful when he is not wearing a tie.C. The design of the tie doesn1t look so nice.D. This is the first time for the man to choose a tie with thi

38、s kind of design.14、15161718A. He lost a button at work.B. He doesn1t know where he put the calculator.C. He thought he broke something the woman lent him.D. Hes not sure how to solve the math problem.A. The woman is helpful.B. The woman is thankful.C. The woman is sorry.D. The woman is offended.A.

39、Because B. Because C. Because D. Becausehe wanted to meet the woman1s parents.he goes to beach house each August.he won11 be able to take a vacation.he didnt know the woman1s plan.A. They don11 want children for the time being.B. They have two children already.C. Mrs. Taylor wishes to have children,

40、 but her husband doesn1t.D. They will start a family as soon as they get married.B. A policeman.D. A waiter.A. A businessman.C. A thief.19、 A. The program begins on Sunday.B. Hell meet the woman onSunday.C. They could watch the program on Sunday. D. His cousin arrives on Sunday.20、 A. Apply immediat

41、ely with any credit card.B . Fill out the membershipapplication form.C. Pay a membership fee .D. Buy certain itemsin the store.21、 A. It bills the customer once a month.B. It1 s a kind of ATMcards.C. It1 s a kind of credit cards.D. It takes out the money fromthe customer * s bank account.22、 A In a

42、grocery store.B. In a bank.C. In a book store.D. In a post office.23、 A. He is upset for not winning championship. B. He 1 s got to attend a meeting.C. He is absent-minded for an offer. D. He wants to get out of there.24、 A. David has made a wrong choice to work in Seattle.B. David should have consu

43、lted her opinion before quitting.C. David will suffer setbacks in his work choices.D. David likes to be a trend-setter in work choices.25、 A. He should turn to somebody else. B. He should work them out on weekend. C She * d like to help if he stops boxing. D. She * d help him after the algebra exam.

44、26、 A. In the shopping mall. B. At the grocery store.C. At the customs. D. In the lost and found office.27、 A. Prof. Steve 1s lecture on global warming is we11-grounded.B. Larry does not accept Prof. Steve * s point as completely true.C. Alice believes global warming is caused by human being.D. Both

45、 Larry and Alice are optimistic about global warming.28、 A. She is applying for a student visa. B. She is applying for financial aid.C. She is running around the office. D. She is offering the man advice.29 A. Cook Susan1s favorite food. B. Buy a small gift for Susan.D. Make a good excuse. D. Get to

46、 Susan * s office immediately.30 A. Their working agenda. B. TV schedules for baseball matches.E. Their favorite baseball teams. D. Their arrangement for the weekend.Section BDirections: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both t

47、he passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices markedA., B. z C. andD. Then mark the corresponding letter on Answer Sheet 2 with a single line through the center.B. She carried out a31、 A. She wrote a letter to

48、the President.D. She spoke at the Earthwild life.habitats.D.B. It provides wildD. It advocates theB. It is a great way to It teaches kids to beChildren * s Forest11 proj ect.C. She established Kids F. A. C. E.Summit in Brazil.32、 A. It offers help to Kids who loves animals with food.C. It creates the backyard wildlife protection of the nature.33、 A. It was established in 1992. start helping the wildlife.C. It has 30,000 members. environmentally friendly.34、 A. Two years ago z in a taxicab.C. One year ago, in a taxicab. coffeehouse.35、A.

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