90. The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as “standing waves.” (A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are (B) crests and troughs that remain stationary although they are formed by rapidly moving air, are (C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is (D) stationary crests and troughs although the air that forms them is moving rapidly, are (E) stationary crests and troughs although they are formed by rapidly moving air, is Agreement The subject of the second independent clause is the resulting flow pattern; this singular subject requires the singular verb is known, not the plural verb are known. While the long descriptive construction between the subject and verb may make it difficult to see this relationship, notice that the modifying phrase is set off with commas. The use of the active voice in the verbs of the subordinate clauses provides greater clarity of meaning. A The plural verb does not agree with the singular subject B The plural verb does not agree with the singular subject; the subordinate clause in the passive voice following although is awkward and unclear C Correct. In this sentence, the singular verb is known agrees with the subject the resulting flow pattern. D The plural verb does not agree with the singular subject; awkward and confusing construction E The clause following although is awkward and Unclear The correct answer is C.
正确选项是C，可我觉得E也对，但是答案是说E是awkward and unclear，还是不太明白~~求助各位，感谢！！
说说我滴看法~有两点 1、把that remain stationary换成stationary并且提前，意思不太一样了。原句说的是“一直是静止的。。。”，而E说的是“静止的。。。”，意思是不是有差异？ 2、GMAT语法是尽量不要用被动的，因为会显得很奇怪，而且用了被动句子意思有变化。原句强调的是the air。。is moving。而E则说they are formed by。。air，句子重心变了~
说说我滴看法~有两点 1、把that remain stationary换成stationary并且提前，意思不太一样了。原句说的是“一直是静止的。。。”，而E说的是“静止的。。。”，意思是不是有差异？ 2、GMAT语法是尽量不要用被动的，因为会显得很奇怪，而且用了被动句子意思有变化。原句强调的是the air。。is moving。而E则说they are formed by。。air，句子重心变了~
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发表于 2011-4-20 13:51:03
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