奇舞凌加的狗窝 (蜀穴和锣际有更新)

ponyoveronica

牛人，来沾点喜气

66小丫头

大大大NNN 粘粘喜气~~~

soda小怡

LZ大牛  为什么不给逻辑牵狗呢～我很激动的跑进来，很悲愤的留言

tomorrow1992

膜拜~~~~~~~~~~沾喜气~

zliycdr

楼主有遇到Ice Age/ Layer这样的内容么... 怀旧狗仔细看也有两种

miller811

膜拜~~狗狗很乖啊

greyerror

大牛牛~~ 沾沾喜气

smilingyuer

期待lz的坐稳狗哈

daier

沾喜气"！！！

soda小怡

大牛很听话 soda很高兴  再来看个GWD题吧  有同学说cotton改良和这题很像，麻烦看下

T-3-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.