A: Hi, Joe,    1   

B: Nothing much. Why?

A: I’d like to go swimming.    2   

B: OK. I am thinking about it, too. My body is dirty. By the way,   3   

A: I was watching TV at home.   4   

B: I was in a shopping center with my parents. We enjoyed ourselves there.

A: That sounds amazing.   5   next weekend instead of watching TV.

B: That’s a deal. I’ll call you then.

A: That’s all right.

患者女性，8岁，因“个子矮小，性早熟，右下肢无力，头痛，呕吐”来诊。查体：意识清楚，对答切题， * * 发育，右下肢肌力4级，双侧视盘水肿。颅脑CT：脑积水，第三脑室球形扩大。

为明确诊断需要的下一步检查包括（）

A.颅脑CT血管造影

B.颅脑数字减影血管造影（DSA.

C.颅脑MRI平扫

D.颅脑磁共振血管造影（MRA.

E.多普勒超声

F.脑电图