Jeffery求教 GWD22-34

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 tastes 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


大家帮忙区分一下D/E选项吧~

are known to be important in courtship


D和E的split ， to 和that  （those那个split就不讲了。。比较明显）


to不对，这个东西只对求爱期有帮助。。。。to表示目的说帮助这个虫吃个东西。不对


应该说什么虫？（吃这个known to be的虫！）能在这个东东的帮助下区别伴侣。。。


好好理解下句意


不要用习语去解题这题


体会DE的意思

个人认为选E吧
A. this指代使用错误; assist不正确;distinguish their own species from that of others中，that of多余。
B. this同A错误;species为单数，复数的those没有指代对象，即使改为that，如A选项分析，也不正确
C. which不能用于指代前句;in being able to表达很繁琐
D. assist习语搭配不正确;选项改变了原句表达关系：to taste作assist的宾语，to distinguish作taste的宾语,改变了句子意思; those of多余且无指代
E. 正确：Hydrocarbons are known to be important in courtship, apparently assisting…. 现在分词作伴随状语。

assist正确的习语搭配为：assist sb.with/in sth., assist in doing sth.