单选题：A) It is seriously polluted.B) The air is very clear.C) Ther

题目内容：

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

参考答案：

答案解析：

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A) It was boring. B) It was quite long.C) It was interesting. D) It was easy to

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分类：英语三级A级题型：单选题

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