法洛四联症
A.胸骨左缘2～3肋间连续性杂音
B.肺动脉瓣区第二心音减弱
C.奔马律
D.心尖部收缩期杂音
E.心包摩擦音
参考答案：B
— Ann is in hospital.
— Oh, really? I _____________ know. I _______________ go and visit her.
A．didn’t; will
B． don’t; will
C． don’t; would
D．didn’t; am going to
