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问题 单项选择题

口底、下颌内侧牙龈和舌同时发生损伤伴有组织缺损时，不能封闭所有创面，应先关闭何处的创面（）

A.口底

B.下颌内侧牙龈

C.舌

D.较小的创面

E.较大的创面

答案

参考答案：C

选择题

Most of the evidence was destroyed in the fire. _____, it would be almost impossible to prove Jim guilty.

A．Anyhow

B．However

C．Besides

D．Thus
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选择题

—Do you know the man under the tree?

—Sorry, I don't know _______. [ ]

A. how is he

B. what is he

C. who he is

D. bother

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