Caterpillars of all species produce an identical hormone called “juvenile hormone” that maintains feeding behavior. Only when a caterpillar has grown to the right size for pupation to take place does a special enzyme halt the production of juvenile hormone. This enzyme can be synthesized and will, on being ingested by immature caterpillar, kill them by stopping them for feeding.
Which of the following, if true, most strongly supports the view that it would NOT be advisable to try to eradicate agricultural pests that go through a caterpillar stage by spraying croplands with the enzyme mentioned above?
(B) Many agricultural pests do not go through a caterpillar stage
(C) Many agricultural beneficial insects go through a caterpillar stage
请问一下这题的 (E) Although the enzyme has been synthesized in the laboratory, no large-scale production facilities exist as yet. 为什么不可以的。。OG 的解释是现在不能生产不代表以后。。有点模糊。。。。求解释~~作者: YEWCHOW 时间: 2011-9-29 05:55
E的选项不是针对问题的情况讲的吧。。作者: kobemvp 时间: 2011-10-3 06:35
According to OG:
E is wrong because：The mere lack of current production facilities does not mean that it would be inadvisable to
develop and use the spray in the future.
However in my opinion, I think E is not the right answer, because it contradict the premise
stimulus: cause enzyme can kill all the pests that go though a caterpillars stage,
conclusion: enzyme should be used to eradicate pests
potential assumption: there are enough synthesized enzyme
For E: there is no enzyme ---> So it is wrong
But I am not sure whether there are some flaws in my reasoning,
If so, please corret me``thanks a lot!
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
