---Excuse me,but I want to ride your bike to go to the bookshop.

---You ____ have my bike if you don't take care of it.

A．shan’t

B．might not

C．needn’t

D．shouln’t

颈椎病的手术指征是（）

A.颈痛伴手麻木

B.头痛、头晕、眩晕

C.反复发作，症状严重，长期保守疗法无效，有脊髓受压或瘫痪

D.颈肩痛，手部肌力减弱，头痛头晕，耳鸣

E.颈肩痛较重，手握力减退，X线片显示有骨棘生成，椎间隙狭窄