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年龄结构为增长型的种群，其年龄锥体的形状为中间宽上下窄。（）

A. 正确
B. 错误

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A．twentyB．sweetC．wrongD．worthy

A. twenty
B. sweet
C. wrong
D. worthy

Someone must have______about among my papers, for my drawer is in a mess.

A. rampaged
B. rehearsed
C. rummaged
D. rescinded

实施加成征税，加二成等于加正税的（）。

A. 0.1
B. 0.2
C. 0.3
D. 0.4

Shenzhou VII was successfully launched September 25th, 2008 Jiuquan, Gangsu

A. in ; on
B. on ; in
C. on ; on
D. in ; in