[外语类试卷]考博英语(完形填空)练习试卷18及答案与解析.doc
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1、考博英语(完形填空)练习试卷 18及答案与解析 一、 Cloze 0 Genetically modified (GM) foodstuffs are here to stay. That2s not to say that food produced by【 1】 agriculture will disappear,【 2】 simply that food buying patterns will polarize. It may even be that GM food will become the food of【 3】 because consumers come to appr
2、eciate the health benefits of reduced【 4】 use. The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep【 5】 with the worlds【 6】 population growth to ten or eleven billion. Its not【 7】 a question of more mouths to feed either.【 8】 is often
3、forgotten is that all these extra people will take up space, reducing the overall land【 9】for agriculture. It rray well be that in the long term it is the developing world【 10】 benefits most from GM foods. Its true that for the next ten years or so GM crops may be【 11】expensive. But the lesson of pe
4、rsonal computers is applicable here once the technology has been developed for money-spinning crops,【 12】 maize, soy beans and cotton, it will become【 13】 for all. This doesnt mean, unfortunately, that families will【 14】 , but severity and duration will be helped by an【 15】 ability to produce and di
5、stribute food. 【 16】 we move into this new era of agriculture were embarking on a journey the world has seen any number of times with experiments before. We have been【 17】species of wheat for several thousand years. Genetic engineers like me are not doing anything as【 18】 as making a cabbage into a
6、cauliflower 【 19】 has been done by plant breeders in the past. Were simply tapping into the whole gene pool,【 20】concentrating on one species at a time. ( A) conventional ( B) conversational ( C) converse ( D) contradictory ( A) and ( B) or ( C) but ( D) rather than ( A) dislike ( B) preference ( C)
7、 favorable ( D) disposal ( A) genetic ( B) technology ( C) scientific ( D) pesticide ( A) development ( B) time ( C) pace ( D) on ( A) coming ( B) expected ( C) predicted ( D) thought-provoking ( A) because of ( B) for ( C) from ( D) just ( A) That ( B) Which ( C) It ( D) What ( A) available ( B) po
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- 外语类 试卷 英语 填空 练习 18 答案 解析 DOC
