一、單項選擇題(本大題共20小題，每小題1分，共20分)

在每小題列出的四個備選項中只有一個是符合題目要求的，請將其代碼填寫在題后的括號內(nèi)。錯選、多選或未選均無分。

1.當歸對子宮平滑肌的影響是(      )

A.興奮                                                             B.抑制

C.雙向調(diào)節(jié)                                                      D.無影響

2.雷公藤毒性的主要成分是(      )

A.雷公藤總甙                                                  B.雷公藤甲素

C.生物堿和倍半萜化合物                                 D.雷公藤酮

3.菌陳利膽作用最強的成分是(      )

A.6，7-二甲氧基香豆素                                   B.氯原酸

C.咖啡酸                                                         D.菌陳色原酮

4.具有升高白細胞作用的藥物是(      )

A.黃芪                                                             B.五加皮

C.黨參                                                             D.甘草

5.具有鎮(zhèn)痛作用的藥是(      )

A.麻黃                                                             B.荊芥

C.菊花                                                             D.桂枝

6.具有升高血壓作用的藥物是(      )

A.麻黃                                                             B.桂枝

C.紫蘇                                                             D.葛根

7.具有抗心律失常作用的藥物是(      )

A.石膏                                                             B.苦參

C.黃柏                                                             D.黃芩

8.具有抑制胰脂肪酶、胰淀粉酶、胰蛋白酶作用的藥物是(      )

A.芒硝                                                             B.牽牛子

C.大戟                                                             D.大黃

9.具有對乙型肝炎表面抗原（HBsAg）有抑制作用的藥物是(      )

A.大青葉                                                         B.金銀花

C.連翹                                                             D.黃連

10.具有抗過敏作用的藥物是(      )

A.五加皮                                                         B.丁公藤

C.威靈仙                                                         D.秦艽