----Now that you like the house with a garden, why not buy it?

----Well, I can’t afford _____ house at present.

A．that expensive a

B．a such expensive

C．that an expensive

D．a so expensive

急性脓胸的临床体征有()

A．肋间隙变窄

B．呼吸运动减弱

C．纵隔向患侧移位

D．叩诊呈浊音

E．语颤音减弱