2. 外语
  3. A、It is seriously polluted. B、The air is very clear. C、There are few cars and factories. D、It remains what it was ten years ago.

A、It is seriously polluted. B、The air is very clear. C、There are few cars and factories. D、It remains what it was ten years ago.

admin2008-11-28  33
问题  
选项 A、It is seriously polluted.
B、The air is very clear.
C、There are few cars and factories.
D、It remains what it was ten years ago.
答案A
解析
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