[求助]大全第二题的答案是不是有误？

蓝露

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

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

这道题到底应该选哪个选项？是A还是D呢？大全跟蓝皮书上不一样，搞不懂了~~

Zeldaw

我觉得选D吧。理由是真理和法律法规的内容都是用一般在时。OG11里好像有这题