— Would you mind my coming over and having a look at your rehearse (排练)? My little son’s curious about the performance.

— _______ . Just come round.

A．Yes, I do

B．Never mind

C．Not at all

D．Yes, please

二尖瓣狭窄最有价值的体征是（）

A.二尖瓣面容

B.心尖部第一心音亢进

C.心尖部舒张期隆隆样杂音

D.肺动脉瓣区第二心音亢进

E.右心室肥大