—You've left the light on.

—Oh.So I have.________and turn it off.

A．I'll go

B．I've gone

C．I go

D．I'm going

AIDS患者中枢神经系统的病变应除外（）

A.弓形虫脑膜炎

B.流行性乙型脑炎

C.多灶性白质脑病

D.亚急性脑病

E.痴呆