GMAT申友逻辑CR题库-Certain genetically modified strains of maize produce a powerful natural insecticide. The insecticide occurs throughout the plant, including its pollen.-精选题库-真题答案解析

题库解析 > 评价题型 >

本题由chris提供

Certain genetically modified strains of maize produce a powerful natural

insecticide. The insecticide occurs throughout the plant, including its pollen. Maize pollen is dispersed by the wind and frequently blows onto milkweed plants that grow near maize fields. Caterpillars of monarch butterflies feed exclusively on milkweed leaves. When these caterpillars are fed milkweed leaves dusted with pollen from modified maize plants, they die. Therefore, by using genetically modified maize, farmers put monarch butterflies at risk.

Which of the following would it be most useful to determine in order to evaluate the argument?

(A) Whether the natural insecticide is as effective against maize-eating insects as commercial insecticides typically used on maize are

(B) Whether the pollen of genetically modified maize contains as much insecticide as other parts of these plants

(C) Whether monarch butterfly caterpillars are actively feeding during the part of the growing season when maize is releasing pollen

(D) Whether insects that feed on genetically modified maize plants are likely to be killed by insecticide from the plant’s pollen

(E) Whether any maize-eating insects compete with monarch caterpillars for the leaves of milkweed plants growing near maize fields

登录申友雷哥GMAT，查看答案及解析

视频解析

暂无视频解析，点击获取更多视频内容

文字解析

答案：

题意：maize�

��花粉会有杀虫剂，花粉会飘到milkweed上，蝴蝶的幼虫会吃milkweed，所以 maize put 蝴蝶 at risk. 问，如何最好的评估上述结论的有效性 A，无关 B,无关 C,在maize 传播花粉的期间，蝴蝶的毛虫时候是否吃milkweed. 吃的话就会put 蝴蝶 at risk，不吃的话便不会。 D，无关 E，无关