prep45不解的烦恼

45. 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.

E. apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

如何选择

D吧,是区分2个species,最后的those of 不能少吧

正确答案是e,很意外吧，大家一起来讨论吧

难道是2个to用错拉请教NN

up

D. apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of

D is wrong.

The reason is the wrong use of one word. 我又要考大家啦。 谁能告诉我为什么呢？

答对的人应有750 的实力咯。。。

assist (somebody) with/in (doing) something

You will be employed to assist in the development of new equipment.

assist in doing

those is redundant