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标题: [讨论]Prep 45 [打印本页]

作者: summerx 时间: 2007-4-13 14:53
标题: [讨论]Prep 45

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.

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

看了帖子但是没有答案。能否解释一下，ABCD各有什么错，尤其是D。谢谢。

作者: kitebird 时间: 2007-4-13 15:32
D不需要those of ，这里的others就是other species的意思

作者: minirainbow 时间: 2008-10-1 08:03

以下是引用kitebird在2007-4-13 15:32:00的发言：
D不需要those of ，这里的others就是other species的意思

why?

Could you define it clearly?

I really want to understand why I could not choose (D) here.

And why answer (E) is correct.

Thanks a lot

作者: a9141067s 时间: 2009-7-20 20:39

同问

作者: inferno19 时间: 2009-7-20 21:38
应该是assist in
og上也有此考点，有assist to 和in的时候应当选择in

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