--Tommy, do you know if Frank __ to the zoo this Sunday if it __?

--Sorry, I have no idea.

A．will go; is fine

B．goes; is fine

C．will go; is going to be fine

D．goes; will be fine

用钳形表测量三相异步电动机的电流时，钳形表应（）

A.串联在电路中

B.并联在电路中

C.单相钳在钳口中

D.三相同时钳在钳口中