在电场作用下的加速度的单向扩散试验是（）

A．对流免疫电泳

B．火箭电泳

C．免疫电泳

D．免疫固定电泳

E．区带电泳

Our .English teacher is our favorite. She’s kind and humorous, but____, she is strict with us.

A．in other words

B．on the other hand

C．after all

D．in all