尺神经由哪些脊神经组成（）。
A.C5-8～T1
B.C5-6
C.C6-8～T1
D.L4-5～S1-3
E.C8～T1
参考答案：E
－It is said that Juliet has been dismissed by her boss.
－_____________.She is late for work five times a week!
A．Hardly surprising!
B．Forget it
C．How come
D．Who knows?
关键项目的总时差为（）。
A.0
B.非0
C.可为0或非0
