The little boy, who had _____ gift for music from an early age, is considered to be _____ future Beethoven by his teachers.

A．the; /

B．/; a

C．a; a

D．the; /

男性，28岁。心悸、气短10年，胸闷胸痛，活动中晕厥发作，下肢浮肿。查体：心脏大，心尖部舒张期杂音，胸骨左缘第3肋间3/6级收缩期杂音，肝大，下肢水肿。心电图：Af。超声：二尖瓣、主动脉瓣增厚，开放受限。

本例诊断是（）

A.扩张型心肌病

B.感染性心内膜炎心衰

C.风湿性心脏病，二尖瓣狭窄并主动脉瓣狭窄

D.风湿性心脏病，二尖瓣窄漏并主动脉瓣窄漏

E.风湿性心脏病，二尖瓣狭窄并主动脉瓣关闭不全