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标题: 大全987第2题答案错误 [打印本页]

作者: zhangyy85 时间: 2006-5-26 14:00 标题: 大全987第2题答案错误

1. A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes.

(A) reduced the amount of phosphates that municipalities had been allowed to dump

(B) reduced the phosphate amount that municipalities had been dumping

(D) reduced the amount of phosphates that municipalities are allowed to dump（A）

(E) reduces the amount of phosphates allowed for dumping by municipalities

这是OG11上的题,OG11给出的答案是D,大全给出的答案是A.

作者: zhangyy85 时间: 2006-5-27 06:32

这是OG11给出的解释:

Since the dumping continues into the present, the past perfect verb "had

been allowed" should instead be the present "are allowed".

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