女，32岁，突发剧烈头痛、呕吐。体检：神志清楚，颈有抵抗，鉴别其为脑膜炎或蛛网膜下腔出血的主要措施为（）。

A.查眼底有无视盘水肿

B.量体温有无发热

C.脑血管造影有无动脉瘤

D.脑脊液检查

E.血常规

Does your teacher often practise ______football with you?        [ ]

A. to play    

B. to playing

C. plays

D. playing