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问题 单项选择题

青枝骨折多发生在（）

A.儿童

B.老年

C.中年

D.青年

E.以上都是

答案

参考答案：A

选择题
It is a pity that none of the ______ stopped ______ the poor man lying there, begging.

A. passer-bys; to help 
B. passers-by; helping 
C. passer-bys; helping 
D. passers-by; to help
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选择题

There are laws in some countries which forbid advertisements _______ at inappropriate times and places.[ ]

A．being shown  

B．shown

C．show  

D．to have shown
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