Question

【题目】The ________ pollution is becoming more and more serious. We haven’t seen blue skies

for several days.

A. noise B. water C. air

Answer 1

【答案】C

【解析】试题分析：句意：空气污染正变得越来越严重。我们已经很多天没看到蓝天了。根据We haven’t seen blue skies for several days.可知，本题指空气污染。故选C。