2. 外语
  3. The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find fiv

The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find fiv

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问题 The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.
   These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.
Stalactites and stalagmites, accretions of minerals formed over time by dripping water, are common features in the region’s corners.
选项 A、formed over time by dripping water, are common
B、that are formed by water dripping over time, are common
C、formed through time by the dripping of water, are common
D、having formed over time through dripping water, is a
E、which are formed over time by the dripping of water, are commonly
答案A
解析 A is idiomatic and clear, and it is the best answer. B leaves open the reading that the water is actually dripping over some physical construct of time. C is unidiomatic. D incorrectly uses the singular verb "is" for a plural subject. E incorrectly suggests that the referent for "which" is "minerals," and the use of the adverb "commonly" suggests that the stalactites might sometimes not be features of the region.
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