求救大全693

1.        The Audubon Society and other conservation groups, concerned over what they have perceived to be the serious threatening of the environment as posed by the policies of the government, are preparing for a major political effort.

(A) have perceived to be the serious threatening of the environment as

(B) perceived as the serious threat to the environment as

(C) perceive being the serious threat to the environment

(D) are perceiving as the serious threatening of the environment（E）

(E) perceive as the serious threat to the environment

看了前人的帖子，发现一个遗留问题：E中POSED 是不是有修饰enviornment的嫌疑？而不是修饰句意应该修饰的“threat”?

因为跳跃修饰中心词的情况中间都是有逗号的呀。比如说：I believe that these books are the most popular ones among all the books ,which are written by Sophie. 这里的which 就是指“these books”