桑螵蛸散与天王补心丹二方组成中均含有的药物是
A．远志、当归B．人参、菖蒲C．菖蒲、远志D．当归、石斛E．龙骨、人参
参考答案：A
The thief took off his shoes when he slipped into the house in order to steal something ___.
A．unnotice
B．unnoticed
C．unnoticing
D．to unnotice
常温下将0.1 mol/L甲酸(HCOOH)溶液加水稀释， 下列说法正确的是 [ ]
A．溶液中c(H+)和c(OH-)都减小
B．溶液中c(H+)/c(HCOOH)减小
C．HCOO-离子的数目增大
D．溶液的pH减小
