2.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
(E) reduces the amount of phosphates allowed for dumping by municipalities
這題大全給的答案是 A ,但是OG11版的答案給D ,聽對岸說OG解釋說是因為要表示這個agreement的規定一直持續到現在,所以用現在式。
但是我不懂的是A 選項過去完成式說明這個agreement減少了原本1972年以前原本allow的amount,在句意上也是說的通的阿,為何不能選呢??
麻煩各位板友可否解惑一下呢?...感謝各位囉...