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