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问题 单项选择题 B型题

地西泮的作用机制（）

A.能促进大脑皮质细胞代谢

B.阻断5-HT在神经末梢的再摄取

C.增强GABA与其受体的结合

D.增强DA在脑内的含量

E.促进多巴胺释放

答案

参考答案：C

选择题

We were told whether _____ a Christmas party was still under discussion. [ ]

A. to hold

B. holding

C. hold

D. held

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选择题

Professor James will give up a lecture on the Western culture,but when and where _______ yet.

A．hasn’t been decided

B．haven’t decided

C．isn’t being decided

D．aren’t decided
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