I often eat breakfast __________ going to school.[ ]
A. in
B. on
C. before
D. after
答案:C
纳税人、扣缴义务人可以委托()代为办理税务事宜。
虚证不寐的病理因素主要是()
A.津液亏耗
B.阴血不足
C.阳气不足
D.脾气虚弱
E.肝郁脾虚