62. 1972 agreement between Canada and the United States reduced the amount of phosphates at municipalities had been allowed to dump into 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 选A是吧?前面好像讨论过。在我发的汇总帖子里。
[此贴子已经被作者于2006-8-12 8:34:52编辑过] |