— What about ______supper that we had in that restaurant last week?

— Well, ____ most worst one indeed.

A．不填；the

B．不填；a

C．the; the

D．the; a

阈上刺激的结果使细胞膜电位变为内正外负的

A．极化状态

B．超极化状态

C．反极化状态

D．0电位

E．不产生变化