患者，男，34岁，涕中带血1个月余，体检未见异常，外院鼻咽镜示鼻咽咽隐窝变浅，活检示鼻咽高分化鳞癌。

放疗一段时间后，患者出现了头痛症状，临床怀疑放射性脑病，首选的检查为（）.

A.SPECT

B.超声

C.CT

D.MRI

E.X线平片

---- Did you see the hit New Year’s movie --- If You Are The One (非诚勿扰) last night ?

---- Yes, but when I got to the movie theater , the film ________ for ten minutes .

A．had begun

B．had been on

C．has been on

D．began