女性，32岁。心悸气促，反复咯血。查体：心率102次/分，心尖区触及舒张期震颤，心尖部可闻及开瓣音，心电图示房颤，该患者最可能的诊断是（）

A.二尖瓣狭窄

B.肺动脉瓣狭窄

C.主动脉瓣关闭不全

D.主动脉瓣狭窄

E.肺动脉瓣关闭不全

Can you imagine the difficulty I had __________ the game?

A．on winning　　

B．won

C．winning

D．having won