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 it be most useful to establish?
Plantings of cotton bioengineered to produce its owninsecticide against bollworms, a major cause of crop failure, sustained littlebollworm damage until this year. Thisyear the plantings are being seriously damaged by bollworms. Bollworms, however, are not necessarilydeveloping resistance to the cotton’s insecticide. Bollworms breed on corn, and last year morecorn than usual was planted throughout cotton-growing regions. So it is likely that the cotton is simplybeing overwhelmed by corn-bred bollworms.
In evaluating the argument, which of the following wouldbe most useful to establish?
A. Whether corn could be bioengineered toproduce the insecticide
B.Whetherplantings of cotton that does not produce the insecticide are sufferingunusually extensive damage from bollworms this year(correct)
C. Whether other crops that have beenbioengineered to produce their own insecticide successfully resist the pestsagainst which the insecticide was to protect them
D. Whether plantings of bioengineered cottonare frequently damaged by insect pests other than bollworms
E. Whether there are insecticides that can beused against bollworms that have developed resistance to the insecticideproduced by the bioengineered cotton
A Whether corn could be bioengineered to produce the insecticide 【玉米是否也可以被转基因然后防虫,无关】
B Whether plantings of cotton that does not produce the insecticide are suffering unusually extensive damage from bollworms this year 【BINGO!!那些非转基因棉花是不是也遭受了来自B的巨大损害,如果是的话,那么就是纯粹B太多把转基因和非转基因都破坏了;如果不是的话,那么就是原文指出的关系有问题了】
C Whether other crops that have been bioengineered to produce their own insecticide successfully resist the pests against which the insecticide was to protect them 【其他一些庄稼通过转基因是不是也可以地狱虫灾…无关】
D Whether plantings of bioengineered cotton are frequently damaged by insect pests other than bollworms 【那些转基因的棉花是不是还会被除了B之外其他的虫子破坏?没有提到其他虫子,无关】
E Whether there are insecticides that can be used against bollworms that have developed resistance to the insecticide produced by the bioengineered cotton【是不是有杀虫剂可以消灭那些对转基因棉花产生抗药性的B虫子?无关】
要注意cotton分两种,一种bioengineered,一种non-bioengineered,这样就能做出来了。我做错主要是被结论里的corn-bred bollworms带着走了,其实和cotton-bred是一种bollworms。
贴一下Verbal Review里面的解释.
B Correct. If bollworm damage on non-bioengineered cotton is worse than usual this year, then bollworm infestation in general is simply worse than usual, so pesticide resistance does not need to be invoked to explain the bollworm attacks on the bioengineered cotton.