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问题 单项选择题

硬膜外使用阿片类药物，出现瘙痒、尿潴留、恶心、呕吐时，可采用何种药物进行对抗（）

A.烯丙吗啡

B.纳洛酮

C.氨苯蝶啶

D.可乐定

E.喷他佐辛

答案

参考答案：B

解析：特异性拮抗药

选择题

There are too many difficulties for us _______ . We really don’t know _______ to do.

A．to deal with, what

B．to deal with, how

C．to do with, how

D．to do with, what
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选择题
Where ______ in ten years' time?

A. were you
B. will you be
C. are you
D. have you been
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