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[Sentence Correction]
试题详情
题目：
Many utilities obtain most of their electric power from large coal and nuclear operations at costs that are sometimes two to three times higher as that of power from smaller, more efficient plants that can both make use of waste heat and take advantage of the current abundance of natural gas.
选项:
A、two to three times higher as that of power from smaller, more efficient plants that can both
B、higher by two to three times as that from smaller, more efficient plants that both can
C、two to three times higher than those for power from smaller, more efficient plants that can both
D、between two to three times higher as those for power from smaller, more efficient plants that both can
E、between two to three times higher than from smaller, more efficient plants that they can both
答案:
C
提问：
at costs 后面为什么可以是that，c选项里的those for power， for是从哪里来的
解答：
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阅读843
提问：
at costs 后面为什么可以是that，c选项里的those for power， for是从哪里来的
解答：
点赞1
阅读844
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