小题1:Would you mind _______my (open) the door ?

小题2:He is______(interest) in history very much..

小题3: If he________(not work) tomorrow, he’ll have a picnic with us..

小题4:You’d better _________(ask) the policeman over there.

小题5:What ________ you _______(do) when the bell rang?

串联电路的总电容与各分电容的关系是（）。

A.总电容>分电容

B.总电容=分电容

C.总电容<分电容

D.无关