大全987 刚做第二个就错了, 请帮忙看看(SC)

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

(C) reduces the phosphate amount municipalities have been allowed to dump

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

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

答案是A. 我选的是B, 我的问题是, 难到不可以理解为: Agreement减少了人们投在湖里的phosphates 数量吗? 为什么一定选A哪?

谢先!

Henry

"the amount of phosphates" is better.

A quick hint:

【讨论连接】─ ─ GMAT语法讨论汇总

发了就后悔了, 对不起.

我应该好好看看发帖的规矩.

多谢版主指引方向.

Henry