题目

You things about. Look, what a mess in your room! A . always throw B . have always thrown C . are always throwing D . have always been throwing 答案：C对于连入不同电路的不同灯泡，亮度较大的灯泡一定是A.通过的电流较大B.两端电压较大C.电阻较大D.消耗电功率较大