— ______ did your aunt leave China?

— She ______ for three years. [ ]

A. When; has left

B. When; has been away

C. How long; has left

D. How long; has been away

女性，45岁，6小时前醒来四肢不能活动，不能说话，饮水发呛。检查：神志清，双眼球外展不能，双侧眼睑和口闭合无力，舌不能伸出。吸吮反射（+）。四肢肌力0级，肌张力低下，腱反射未引出，双下肢病理征（+）（）。

A.病变累及小脑后下动脉

B.病变累及基底动脉

C.病变累及大脑前动脉

D.病变累及大脑中动脉

E.病变累及大脑后动脉