下列各组药物中，属于配伍禁忌的是
A．巴豆与牵牛B．牙硝与郁金C．丁香与三棱D．官桂与五灵脂E．人参与赤石脂
参考答案：A
We writing a letter of complaint to the manager himself．But we'd like to hear your opinion first．
A．have been thinking of
B．had thought of
C．were thinking of
D．thought of
“卤水点豆腐，一物降一物”是怎么回事？
