How I wish I       a doctor and I       the       girl.

A．am; can save; dead

B．was; can save; death

C．were; could save; dying

D．were; could save; died

出现第一个条件反射的时间是（）

A.生后1周左右

B.生后2周左右

C.生后3周左右

D.生后4周左右

E.生后5周左右