To tell the truth, what you said was too ________ for us to understand.

A．complex

B．comfortable

C．concrete

D．common

能活血、凉血的药物组是（）

A.川芎、郁金、姜黄

B.牡丹皮、赤芍、丹参

C.桃仁、红花、丹参

D.鸡血藤、当归

E.牛膝、益母草、红花