885-sec14-19

hitler999

查了一下，没人问

19.   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

为什么不选D啊？the amount of phosphates that municipalities are(had been) allowed to dump这不是政府法令的一部分吗，按XDF老师上课所讲，政府法令要用现在时的啊。

三脚猫

但是phosphates是在1972年之前被允许倾倒的啊

hitler999

以下是引用三脚猫在2005-7-14 11:28:00的发言：
但是phosphates是在1972年之前被允许倾倒的啊

这个我知道，但XDF老师的意思是：只要是政府法令，哪怕是1279年的，也要用现在时，这条规律是用现在时的三条规律之一，还有两条是：客观事实（比如地球绕太阳转）；科研成果或统计资料。

这种规律正确吗？谢谢

hitler999

自己顶一下

andrew_li

The sentence is talking about the effect of the agreement but not its content.

hitler999

噢，明白了，谢谢

janeeyre

OG-11^th的答案是D

An agreement that occurred in 1972 is correctly described with the past tens verb reduced.Since the dumping continues into the present, the past perfect verb had been allowed should instead be the present are allowed.

A Had been allowed should be are allowed.

B The phosphbates amount should be the amount of phosphates;the meaning of the sentence is changed by the omission of any form of allow.

C The present tense reduces should be the past tense reduced;the phosphate amount should be the amount of phosphates;have been allowed should be are allowed

D Correct.The past tense reduced is correctly used in this sentence to describe a past action,and the present tense are allowed is used to describle the present situation.

E The present tense reduces should be the past tense redueced;allowed for dumping is an incorrect idiom;allowed for dumping by municipalities is awkward