I need the money badly now and I have to       my car though I’m not at all willing to do so.

A．destroy

B．sacrifice

C．undertake

D．guarantee

成人股骨头缺血性坏死可分为（）与（）两大类。

A.原发性和继发性

B.创伤性和非创伤性

C.增生性和坏死性

D.混合性和单纯性

E.以上都不是