右心室后负荷增加见于（）
A.二尖瓣狭窄
B.肺动脉高压
C.主动脉瓣狭窄
D.主动脉瓣关闭不全
E.三尖瓣关闭不全
参考答案：B
When I _______ in the kitchen, nothing made me feel better than preparing the eggs and serving them just the way the customers wanted.
A．worked out
B．figured out
C．helped out
D．found out
临床诊断骨折的主要依据是（）
A.X线检查结果
B.病史和体征
C.肢体形态
D.肢体功能障碍
E.病人疼痛感
