标题: TN版GWD11套Q3 [打印本页] 作者: linya76 时间: 2010-7-3 15:22 标题: TN版GWD11套Q3 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?
A. Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed. B. Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops. C. Whether for most farms who grow cotton it is their primary crop D. Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did. E. Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide. 答案是B，但我觉得似乎D也有道理。因为new seeds的amount of insecticide slightly lower,所以如果种的地足够多的话，也可以省钱，有经济价值啊。 请牛牛们解答，谢谢作者: xAriAx 时间: 2010-7-4 01:12
不是NN，个人意见 D中比较了基因修改后的玉米的种植面积与原始玉米的种植面积 但是，题目中给出的条件是比较 the amount of insecticide needed per acre，即每公顷杀虫剂用量， 因此面积的比较为无关作者: ken178 时间: 2010-7-14 09:36
还有其它的解释吗？我的想法和LZ的想法一样，不明白为什么评价这个genetic modifications to cotton 要和其它的作物比较？？？？？？作者: ken178 时间: 2010-7-14 09:40
这题答案是什么？怎么网上又有B又有E选项。晕作者: 记忆钢琴 时间: 2010-10-18 12:20
顶，为什么B要比较其他作物呢？作者: 记忆钢琴 时间: 2010-10-18 12:23
求NN解答。。。我凭直觉选的E。。在考场上遇到这种题估计我就是靠直觉蒙了。。作者: 记忆钢琴 时间: 2010-10-18 12:28
http://forum.chasedream.com/GMAT_CR/thread-328509-1-1.html?SearchText=gwd11 3
看过这个帖子明白一点了作者: 13711 时间: 2011-6-4 23:14
个人认为是B，补出了杀虫剂与经济利益之间的桥梁，即杀虫剂的价格作者: Thruth 时间: 2011-6-4 23:35
B 和其它作物比较没有任何意义，明显不对。 E