2. 外语
  3. Butterflies come in more than 17,000 species, displaying a wing pattern unique to each one.

Butterflies come in more than 17,000 species, displaying a wing pattern unique to each one.

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问题 Butterflies come in more than 17,000 species, displaying a wing pattern unique to each one.
选项 A、displaying a wing pattern unique to each one
B、displaying a unique wing pattern in each
C、each uniquely displaying a wing pattern
D、each of which displays a unique wing pattern
E、each of which uniquely displays a wing pattern
答案D
解析 Diction; Logical predication
As well as noting the surprisingly large number of butterfly species, the sentence probably seeks to make the point that no two species have the same wing pattern. Which of the suggested ways of conveying this information is clearest and unambiguous?
A In a conversational context, the thought underlying this version would probably be successfully understood by most listeners However, the participle displaying modifies butterflies, not species. Thus the sentence as written seems to say, illogically, that each butterfly displays a wing pattern unique to each one.
B The phrase in each is illogical: what cannot have been intended in the given sentence is that all 17,000 species display a single wing pattern.
C This produces nonsense: all butterflies presumably display some wing pattern; it is not clear, however, what it could mean to "uniquely" display a wing pattern.
D Correct. In the given phrase, the which refers to 17,000 species; it conveys exactly the same information as the following sentence: Each of 17,000 species displays a unique wing pattern. Both convey the information that no two of the species have the same wing pattern.
E It is not clear what it could mean to "uniquely" display a wing pattern.
The correct answer is D.
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