Would you like something _____? [ ]
A. drink
B. drinking
C. to drink
D. drinks
答案:C
She is ____ and he is ____. [ ]
A. tall; shorter
B. taller; short
C. taller; shorter
某用户电子式电能表的表盘上标有“2000imp/(kw•h)的字样.若3min电能表表盘上的指示灯闪烁了40次,则这段时间内该用户消耗的电能为______J,所使用用电器的总功率为______W.