腰麻时注药的速度一般采用（）
A.每秒注射1ml
B.每2秒注射1ml
C.每3秒注射1ml
D.每4秒注射1ml
E.每5秒注射1ml
参考答案：E
— I'm sorry. I ______ at you the other day.
— Forget it. I was a bit out of control myself. [ ]
A. shouldn't shout
B. shouldn't have shouted
C. mustn't shout
D. mustn't have shouted
在以社会保险筹资为主的国家，医疗保险资金最主要的来源是（）
A.雇主
B.雇员
C.国家补贴
D.雇主和雇员共同缴款
