[讨论]GWD 6－21 各位来看看这道题目

coffeeaddict

Q21:

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?

 

1. Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed
2. Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops
3. Whether for most farmers who grow cotton it is their primary crop
4. Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did
5. Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide

有点细节上面搞，先不发表我的意见，以免误导大家。听听各位NN的意见！

gonghao

争议题

楼主可以去进行搜索，前人对此的讨论很深入了。

gonghao

http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=58110&replyID=505812&skin=1

for your reference

coffeeaddict

Thanks so much!!

myronx

我也来发表一下谬论，我觉得选E

A无关排除，other crops

B无关排除，other crops

C无关排除，primarily

D以实验亩数越多，误差越小的角度说，D好像靠谱，但是却不能说明原题中的结论就一定是错误的；

E参加实验的人是否原来需要使用大量的杀虫剂呢？如果是，那么由于基因种子没有达到他们预期的增加收益的效果，那么就support了结论；相反，如果否，也就是说他们原来的cotton就不需要太多杀虫剂，那么即便用了基因种子，也不会有明显的效果，不能证明基因种子就没用，那么就weaken了结论。

szy733

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