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标题: 大家看两道难题，探讨一下 [打印本页]

作者: yilin2288 时间: 2006-9-15 23:58
标题: 大家看两道难题，探讨一下

40. GWD-23-Q14

Plantings of cotton bioengineered to produce its own insecticide against bollworms, a major cause of crop failure, sustained little bollworm damage until this year. This year the plantings are being seriously damaged by bollworms. Bollworms, however, are not necessarily developing resistance to the cotton’s insecticide. Bollworms breed on corn, and last year more corn than usual was planted throughout cotton-growing regions. So it is likely that the cotton is simply being overwhelmed by corn-bred bollworms.

In evaluating the argument, which of the following would be most useful to establish?

Whether corn could be bioengineered to produce the insecticide
Whether plantings of cotton that does not produce the insecticide are suffering unusually extensive damage from bollworms this year
Whether other crops that have been bioengineered to produce their own insecticide successfully resist the pests against which the insecticide was to protect them
Whether plantings of bioengineered cotton are frequently damaged by insect pests other than bollworms
Whether there are insecticides that can be used against bollworms that have developed resistance to the insecticide produced by the bioengineered cotton

答案是B，但是我想不明白，我总觉得选C

31. GWD25-Q31

New items developed for automobiles in the 1997 model year included

a safer air bag , which, unlike previous air bags, eliminated the possibility

that a burst of smoke would appear when the bag inflated, and making an

already terrified passenger think the car was on fire.

A. inflated, and making.

B. Inflated, so that it could make.

C. Inflated and made.

D. Inflated and make.

E. Inflated to make.

这个题答案选的是E，我觉得应该选D，大家说呢