颈外静脉怒张伴收缩期搏动见于
A．三尖瓣关闭不全
B．三尖瓣狭窄
C．二尖瓣狭窄
D．二尖瓣关闭不全
E．主动脉瓣关闭不全
参考答案：A
Would you like tea or coffee?
- , thank you. I've just had some water.
A．Either
B．Both
C．Any
D．Neither
推理机
