-Why _         fishing tomorrow?  

-Good idea.   [ ]

A. don't go              

B. not go  

C. not to go              

D. don't you going

兴奋性突触后电位是指在突触后膜上发生的电位变化为

A．极化
B．超极化
C．后电位
D．复极化
E．去极化