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本贴相关题目 VQEX TN-11-CR-3

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Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers' report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically.
Which of the following would it be most useful to know in order to evaluate the argument?

正确答案: D

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楼主
发表于 2016-9-29 14:54:53 来自手机 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
求解释!为什么要关心两组农民是不是种了相同acre的棉花?题中说per acre的amount是slightly lower,那就是说per acre的用量基本相同。arce的多少影响的是总量,但是否economiclly不是要看平均的收益与成本吗?
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沙发
发表于 2016-9-29 17:31:09 | 只看该作者
D选项说的是:新老技术下种植的亩数是否一样。个人感觉,如果改良种子种植的亩数远远超过原先普通种子的种植亩数,那么新技术其实还是有利可图的。
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