Critical Reasoning
试题详情
文章：
Scientists have modified feed corn genetically, increasing its resistance to insect pests. Farmers who tried out the genetically modified corn last season applied less insecticide to their corn fields and still got yields comparable to those they would have gotten with ordinary corn. Ordinary corn seed, however, costs less, and what these farmers saved on insecticide rarely exceeded their extra costs for seed. Therefore, for most feed-corn farmers, switching to genetically modified seed would be unlikely to increase profits.
题目：
Which of the following would it be most useful to know in order to evaluate the argument?
选项:
A、Whether there are insect pests that sometimes reduce feed-corn yields, but against which commonly used insecticides and the genetic modifi cation are equally ineffectiveWhether the price that farmers receive for feed corn has remained steady over the past few years
B、Whether the insecticides typically used on feed corn tend to be more expensive than insecticides typically used on other crops
C、Whether most of the farmers who tried the genetically modifi ed corn last season applied more insecticide than was actually necessary
D、Whether, for most farmers who plant feed corn, it is their most profi table crop
答案:
D
提问：
老师这道题我选到了B
我的分析是：背景：种植转基因庄稼的农民上季度没有买太多杀虫剂，产量和种植普通庄稼的农民差不多；普通庄稼更加便宜，并且其他费用也不贵；结论：种植转基因庄稼的农民不会获得额外的利润； 题目要求：评论
之所以没选D是因为D选项说的是有没有过量使用杀虫剂，但是原文不是说了杀虫剂用量不多来着。
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