21.與丹參“安神寧心”的功效相吻合的是(      )

A.丹參可使動物自發(fā)活動減少                     B.丹參可改善心臟功能

C.丹參可改善微循環(huán)                                   D.丹參有鎮(zhèn)痛作用

22.丹參治療冠心病的藥理學(xué)基礎(chǔ)是(      )

A.可調(diào)節(jié)組織的再生與修復(fù)                         B.有明顯的鎮(zhèn)靜作用

C.可收縮血管                                              D.能改善血瘀患者的血液流變學(xué)特性

23.可治療血小板減少的藥物是(      )

A.益母草                                                     B.丹參

C.川芎                                                        D.延胡索

24.川芎中對α-受體有阻斷作用的成分是(      )

A.揮發(fā)油                                                     B.阿魏酸   

C.生物堿                                                     D.黃酮類

25.沒有鎮(zhèn)靜作用的藥物是(      )

A.延胡索                                                     B.川芎

C.丹參                                                        D.益母草