In Scotland, the number of wild salmon have been reduced because of uncontrolled deep-sea and coastal netting, by pollution, and by various other threats to the fish's habitat.
题目解答
历史版本-2 由molly725更新于2013-09-06 17:34:57
numbers可以指同类生物有很多
A,B,C都存在与非划线部分不平行。
D是不够简洁，adj.比定从更好。
所以选E. BY...,BY..., and BY...
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A. have错误，应该是单数。And后面跟了by，前后应对称的用reduced by。同时by pollution的承受者应该是wild salmon，所以the number of wild salmon错误。
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B. and平行错误同A。逻辑主语错误同A。
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C. the numbers错误。逻辑主语错误同A。and平行错误同A。
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D. that is not controlled不如uncontrolled简洁。
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E. correct
