题目内容

普萘洛尔不具有下列哪项作用()

A. 抑制心肌收缩力
B. 减慢心率
C. 减少心输出量
D. 松弛支气管平滑肌
E. 减少肾素分泌

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α受体阻断药的主要不良反应是()

A. 血糖过低
B. 支气管哮喘
C. 直立性低血压
D. 高脂血症
E. 心力衰竭

β受体阻断药的正确停药方式()

A. 逐渐减量至停药
B. 立即停药
C. 静脉给药转转口服后停药
D. 静脉给药转肌内注射后停药
E. 肌内注射给药转口服后停药

When I __(wait)for the bus,I saw him enter the shop yesterday.

A. was waiting
B. will wait
C. was waited
D. wait

They were reading the text aloud when the teacher ___(come) in.

A. coming
B. came
C. was coming
D. come

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