PREP 150 比较对象问题

白菜白菜

Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.

(A) and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of
(B) and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of
(C) which apparently assists flies that taste the hydrocarbons on prospective mates in being able to distinguish their own species from
(D) apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of
(E) apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from


答案是E  我不懂的是为什么这里others指代的是species而不是flies，看了解释还是不大明白。。
那以后做题要如何区分这个呢？

bobdog159

这个要从句子的逻辑意思分析吧。苍蝇更具味道区别不同种类的苍蝇，而不是不同的苍蝇（不同的苍蝇可以是同种的，就像我们 按肤色区分不同的人种而不是区别不同的人）

chantal891121

distinguish A from B，这是一个固定搭配
A和B并列，表示同一类事物，且需要区分

白菜白菜

这个要从句子的逻辑意思分析吧。苍蝇更具味道区别不同种类的苍蝇，而不是不同的苍蝇（不同的苍蝇可以是同种的，就像我们 按肤色区分不同的人种而不是区别不同的人）

-- by 会员 bobdog159 (2012/4/2 14:47:20)

这是知道正确答案的情况下 只能这么解释咯 但如果选的话 怎么才能知道选E不是D呢