(2010·江苏，31)—I have tried very hard to find a solution to the problem，but in vain.

—Why not consult with Frank？You see，________.

A．great minds think alike

B．two heads are better than one

C．a bird in the hand is worth two in the bush

D．it's better to think twice before doing something

Ⅱ孔型室间隔缺损的血流动力学改变有（）

A.左心室增大

B.左心房增大

C.右心室增大

D.右心房增大

E.肺动脉高压