-Mike, it's a pity you didn't come to last night's concert. Itwas really great!    

-Really? If I _____ so busy, I would have gone with you.     [ ]

A. hadn't been    

B. weren't    

C. shouldn't be    

D. wouldn't be

男性，55岁。双下肢无力半年，右侧明显，近2个月行走不稳，右手不能扣纽扣，无外伤史，无发热。体格检查，颈背部无明显压痛，两上肢前臂、手及上臂尺侧皮肤感觉减退，右侧尤其明显，四肢肌张力增高，肱二头肌反射亢进，双侧膝踝反射亢进，右髌阵挛阳性，右巴宾斯基征阳性。

应考虑的治疗是

A．激素治疗

B．颈枕吊带牵引

C．推拿按摩治疗

D．手术