Critical Reasoning
试题详情
题目：
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?
Which of the following would it be most useful to determine in order to evaluate the argument?
选项:
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
答案:
C
提问：
感觉B选项和C选项都有驳斥的作用
B说的是改良的M的授粉的部位所含的杀虫剂要比其他部位少，C说的是蝴蝶是不是在M传播花粉的季节活跃
感觉都驳斥或者削弱了原文，区别在哪里？请老师指点
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