用于治疗慢性胃炎胆汁反流明显的首选药物是
A．甲硝唑
B．西沙必利
C．胶体铋
D．丙胺太林(普鲁苯辛)
E．雷尼替丁
参考答案：B
去甲肾上腺素激动的β1受体属于
A．离子通道耦联受体B．细胞内受体C．兴奋性G蛋白耦联的受体D．抑制性G蛋白耦联的受体E．具有酪氨酸激酶活性的受体
According to this passage, ______.
A．man is the cause of some animal extinction
B．animals often bring about their own extinction
C．Congress can absolutely end extinction of animals
D．a law is more important than human responsibility
