题目: —How do you find the British Museum?—Great!It's________worth________.[ ]A. very; visiting B. well; a visitC. quite; being visited D. very much; visiting 答案: 答案:B
题型:选择题 质量为4kg的物体由静止开始向上被提升0.25m后,速度达1m/s,则下列判断正确的是( )A.拉力对物体做功为12JB.合外力对物体做功为2JC.物体克服重力做功为10JD.拉力对物体做功等于物体增加的动能 查看答案