— Does your mother often _______ to you?

— Yes.  But she always ________ the same words.

A．talk; say

B．talk; says

C．speak; tells

D．talk; speaks

如图所示的电路，电压表测量的电压是

A．灯L₁两端的电压

B．灯L₂两端的电压

C．灯L₁和L₂的总电压

D．电源的电压