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问题 单项选择题

可以在体内合成的维生素是（）。

A.维生素C

B.维生素E

C.维生素P

D.维生素D

答案

参考答案：D

选择题
— You didn't do your homework _______, Jim.
— I'm sorry, Mum. But I haven't got _______ for such things.

A. careful enough; enough time
B. enough careful; time enough
C. enough carefully; enough time
D. carefully enough; enough time
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单项选择题

定喘汤的组成药物中不含有

A．苏子、半夏
B．款冬花、桑白皮
C．桑叶、生石膏
D．白果、甘草
E．杏仁、黄芩
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