He must have told you the news last night, _____? [ ]

A. doesn't

B. hasn't he

C. didn't he

D. mustn't he

动脉瘤的MRI表现哪项描述错误（）

A.多数可显示来源

B.可有血栓形成

C.可呈流空信号

D.均有增强

E.有时需与肿瘤鉴别