题目内容

______ has cleaner air.

A. Nowhere
B. The city
C. The countryside

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【B9】

A. got
B. passed
C. made

People don't feel the earth's movement because the earth is very large.

A. True
B. False

A．toB．inC．forD．from

A. to
B. in
C. for
D. from

下列各类结构中,伸缩缝间距最大的是()。

A. 排架结构
B. 框架结构
C. 剪力墙结构
D. 挡土墙