口中时吐黏涎者多为()
A.脾胃虚寒
B.寒湿困脾
C.脾胃湿热
D.虫积
E.伤食
参考答案:C
— How many girls are there in the room?
— .[ ]
A. None
B. Nobody
C. Nothing
D. Not one
有机溶剂对有机相中的酶的催化又什么影响?