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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
E，H assists flies that taste H in distinguishing their own species from others. 帮助品尝H的果蝇去区分自己的物种和其他物种。
assist/help sb in doing sth/with sth, 帮助某人做某事；
assist/help sb (to) do sth, to可以省略也可以不省，帮助某人做某事--可以引起状态转换，如：
a course to assist adults to return to the labour market 帮助成人重返劳工市场的辅导班
This should help (to) reduce the pain. 这个应有助于减轻痛楚。
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。
D. assisting flies to taste the hydrocarbons的主语是hydrocarbons，语意变成了”碳水帮助果蝇品尝碳水“，错误
assist sb in doing sth
those of others也不对
this不可以指代前面的句子/词， this 的使用很limited
E的结构是assist sb in doing sth，帮助某人做某事，Hydrocarbons assist flies (that taste the hydrocarbons on prospective mates) in distinguishing their own species from others帮助那些品尝伴侣身上的H的苍蝇来区分物种。
D，to do表示状态的转换，help/assist表示帮助，帮助这个动作对事情的发生与否起的是促进作用，不是决定作用，后面不接不定式
'those of others' is problematic; it should just be 'others' (it's clear that the intention is to refer to other species, not to something of other species).
'those of others' is problematic; it should just be 'others' (it's clear that the intention is to refer to other species, not to something of other species).
- the original meaning is that hydrocarbons assist those flies that happen to taste them in species identification.
- choice d asserts that hydrocarbons somehow help flies to taste hydrocarbons (other ones?) with the intention** of species identification, which is a whole different ballgame.