奇经八脉有"一源三歧"现象。
其源是指：（）。
A.膀胱
B.胆
C.胞宫
D.脑
E.脉
参考答案：C
--- I will be able to come to see your __________ at 8:30 tomorrow evening.
--- I’m sorry, by then it __________ and I will be meeting reporters in the meeting room.
A．performer; will be ended
B．performance; will have ended
C．performing; is to end
D．perform; will be ended
A.二蒽酮苷类 B.大黄素型 C.苯醌类 D.茜草素型 E.菲醌类
蒽醌的羟基分布在一侧苯环上称为
