请教题目 GWD11套第3题

伦理菌

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 farmers 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  
  

不懂这条题目到底应该选D还是E，求大神赐教！

Fiona09

这道题是版上讨论比较激烈的争议题，给LZ po出链接参考下

http://forum.chasedream.com/thread-434810-1-1.html
http://forum.chasedream.com/thread-524586-1-1.html

伦理菌

Fiona09 发表于 2016-8-29 11:31
这道题是版上讨论比较激烈的争议题，给LZ po出链接参考下

http://forum.chasedream.com/thread-434810-1 ...

谢谢你！