— Is this a teacher's desk?
— Yes, _____________.[ ]
A. it isn't
B. is it
C. it is
答案:C
经行泄泻主要发病机制是()
A.气血两虚
B.肝胃不和
C.脾阳不振
D.脾肾阳气不足
E.胃阴不足
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