答案:C
The professor paused as if ___________ his students to ask questions on the point he had just made.
A.expecting
B.is expecting
C.expected
D.to have expected
.下列说法中正确 ( )
A.家庭电路中的熔丝熔断,一定是发生了短路
B.有金属外壳的家用电器,为了安全一定要插在三孔插座上
C.家用电能表上的示数显示了家庭用电的总功率
D.电扇工作时,消耗的电能全部转化为机械能