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[Sentence Correction]
试题详情
题目：
Of all the vast tides of migration that have swept through history, maybe none is more concentrated as the wave that brought 12 million immigrants onto American shores in little more than three decades.
选项:
A、maybe none is more concentrated as
B、it may be that none is more concentrated as
C、perhaps it is none that is more concentrated than
D、maybe it is none that was more concentrated than
E、perhaps none was more concentrated than
答案:
E
提问：
错选了A，如何判断应该用is还是was？谢谢
解答：
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提问：
错选了A，如何判断应该用is还是was？谢谢
解答：
点赞0
阅读843
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