—I've got a new job as a doctor in Shanghai, Sam．

—Oh, _________,but I'll miss you．

A．that's too bad

B．that's a problem

C．that’s nothing

D．that's great

以下不能作为诊断肺心病的主要依据是()

A．右下肺动脉扩张，横径≥15mm

B．肺动脉段突出

C．肺型P波

D．右束支传导阻滞

E．V1呈R/S＞1