問題詳情
8.In the 1980s, British scientists were the first to notice a(n) ______ thinning of the ozone layerabove Antarctic. To stop the hole from growing larger at a fast pace, the world has done a lot.
(A) optimistic
(B) casual
(C) dramatic
(D) economical
參考答案
答案：C
難度：困難0.333333
統計：A(1),B(0),C(1),D(1),E(0)