How old are you? [ ]

A. I'm nine years old.

B. I'm fine.

C. He is nine years old.

左心功能不全（）

A.心排出量下降及体循环静脉压力升高

B.心排出量下降及肺静脉压力升高

C.心排出量下降及心脏前负荷不足

D.心排出量下降及肺、体循环静脉压力升高

E.心排出量下降及心室充盈受限