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[求助] verbal review 2016

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楼主
发表于 2016-2-28 15:38:13 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
Around 1900, fisherman in the Chesapeake Bay area landed more than seventeen million pounds of shad in a single year, but by 1920, overfishing and the proliferation of milldams and culverts that have blocked shad migrations up their spawning streams had reduced landings to less than four million pounds.
A  that have blocked shad migrations up their spawning streams had reduced landings to less

B  that blocked shad from migrating up their spawning streams had reduced landings to less
C  that blocked shad from migrating up their spawning streams reduced landings to a lower amount
D  having blocked shad from migrating up their spawning streams reduced landings to less
E  having blocked shad migrations up their spawning streams had reduced landing to an amount lower


楼主求各位大神分析 各选项

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沙发
发表于 2016-2-28 21:53:21 | 只看该作者
A. have blocked时态错
C. amount与pounds不能比
D. having blocked不能做限定性修饰
E. amount与pounds不能比
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