——This green coat looks nice on you and it is only 200 Yuan.

——OK.______.

A．I'll need it

B．I'll take it

C．It's much too expensive.

D．I'd like to sell it.

心左缘上段的结构是（）

A.肺动脉段

B.左心室段

C.主动脉结

D.左心房段

E.上腔静脉