逻辑 Critical Reasoning-5173

标记
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 caterpillars, kill them by stopping them from 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?

【选项】Many agriculturally beneficial insects go through a caterpillar stage.

选项是否正确?

  • 正确
  • 错误

正确的用户笔记

0个赞

荔馨 2015-07-04 17:23:55

注意题目理解原文的中心就是要用这种喷雾在某个阶段杀死害虫,不让他们吃庄稼,问题是”下面哪个选项是支持不建议使用这种喷雾的“也就是要选这个喷雾的坏处的,所以C说对农业有益的虫也会经历那个阶段(那么如果用的喷雾,就连这些益虫也会被杀死,所以还是不建议使用该喷雾)

0个赞

Cindygmat 2014-12-24 05:30:38

许多有益的虫经历caterpillar stage,他们对农业有利,所以不应该用enzyme杀他们

GMAT

考满分GMAT备考平台-公开课天天看,免费提供强大的学习做题
系统,专业优质的在线课程助你迅速提分。

GMAT考满分App

把网站装进口袋
随时随地练习

联系我们