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题库 / Prep2007E2-SC-150
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.
and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of
and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of
which apparently assists flies that taste the hydrocarbons on prospective mates in being able to distinguish their own species from
apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of
apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from
distinguish their own species from xxx，根据意思可以理解为 区分它们自己和其他，这个owm species，并不是它们的什么，就是它们自己；排除ABD；
C-in being able to 很wordy 直接说in distinguishing就好了；排除C；
另外 that taste the hydrocarbons on prospective mates 作为修饰成分 修饰 flies，可以看出assist flies in doing sth 这个结构。
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