19 ．既能养心安神，又能祛风通络的药物是 (       )

A ．合欢皮                                                 B. 酸枣仁      

C. 夜交藤                                                    D. 柏子仁

20 ．既能清热息风，又能平喘、利尿的药物是 (       )

A. 地龙                                                       B. 钩藤  

C. 牛黄                                                        D. 僵蚕

21 ．麝香常用剂量是 (       )

A.0.06 -0.1g                                                 B.0.03 -0.1g  

C.5 -8g                                                        D.0.3 -1g

22 ．具有补肾，强筋骨，安胎作用的药物是 (       )

A. 五加皮                                                    B.