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问题 单项选择题 B型题

滋补药宜（）

A．睡前服

B．饭前服

C．饭后服

D．空腹服

E．顿服

答案

参考答案：B

选择题
When you get the paper back, pay special attention to what  ______.

A. have marked
B. have been marked
C. had marked
D. had been marked
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选择题

下述物质：①CH3(CH2)2CH3 ②CH3(CH2)3CH3 ③(CH3)3CH；④(CH3)2CHCH2CH3 ⑤(CH3CH2)2CHCl，其沸点由高到低排列的顺序是

A．⑤②④①③

B．④②⑤①③

C．⑤④②①③

D．②④⑤③①
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