By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.

A．walks　　

B．walked

C．has walked

D．had walked

中风左侧肢体瘫痪的患者应取（）

A.左侧顶颞前斜线和顶颞后斜线

B.右侧顶颞前斜线和顶颞后斜线

C.右侧顶颞后斜线

D.左侧顶颞后斜线

E.左侧颞后线