标题: 求教prep08 p2 211题 [打印本页] 作者: cq505836696 时间: 2012-1-2 22:37 标题: 求教prep08 p2 211题 211. (GWD-5-Q34)Many entomologists say that campaigns to eradicate the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant's natural enemies, which made it easier for them to spread.
A.which made it easier for them
B.which makes it easier for it
C.thus making it easier for them
D.thus making it easier for the ant(D)
E.thereby, it was made easier for the ant
题目释义：Many entomologists say that campaigns.....have failed...., thus making....
这题楼主实在没有理解划线部分的意思，题目是说一些生物学家认为在美国消灭火蚁的方法是失败的，因为使用的化学物质只有在什么情况下才会有效，因此。。。 D选项中的It指代什么呢，选项中说什么对蚂蚁的扩散更容易了。。。，求解惑 作者: HarrisZheng 时间: 2012-1-2 22:59
it 是形式宾语