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.
(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
ANS. (D)
OG的解釋是The past tense reduced is correctly used in this sentence to describe a past action, and the present tense are allowed is used to describe the present situation.
想請教各位,原句(A)為什麼不可以呢? (D)的意思是解讀為 "一項1972年加拿大和美國的協議減少了目前市政被允許倒入大湖的磷酸鹽份量"。不過原句應該也可以被解釋為 "一項1972年加拿大和美國的協議減少了以往市政可允許倒入大湖的磷酸鹽份量"。就是說以往可以倒入的份量比較多,現在協議不可以倒入那麼多了? 請問我的想法哪裡有盲點呢? 煩請各位指教~~ 感謝喔!