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150. (32705-!-item-!-188;#058&007266)
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 prospectivemates 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 indistinguishing their own species from those of
(C) which apparently assists flies that taste 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 theirown species from those of
(E) apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishingtheir own species from
Their own species 跟 those of others不是很对称吗？难不成flies可以直接等同于species吗？
然后C中which指代courtchip是怎么错误的，有些想不明白？E中assisting的主语是hydrocarbons。两者主语不一样，怎么解释C是错的？答案是E，谢谢
Their own species 跟 those of others不是很对称吗？难不成flies可以直接等同于species吗？
然后C中which指代courtchip是怎么错误的，有些想不明白？E中assisting的主语是hydrocarbons。两者主语不一样，怎么解释C是错的？答案是E，谢谢
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发表于 2011-7-24 11:32:37
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