题目

What do you like eating for dinner? Do you like meat ? Do you like vegetables? Do you like fruit or dessert ( 甜点) after dinner? We asked 50 students these questions. They are from a school in Guilin. Here are the result(结果). 请根据材料内容 (    ) 1. _________ boys answer the questions. A. 20     B. 30      C. 25      D. 10 (    ) 2. The 55 students all eat _________ for dinner. A. fruit      B. vegetable      C. meat     D. French fries (    ) 3. ____________students don’t eat vegetables for dinner. A. 25       B. 20     （2011?怀柔区一模）图所示的情景中，关于力对物体做功的叙述，正确的是（　　）A．举重运动员举着杠铃不动．运动员对杠铃做功了B．人推汽车但没有推动．人的推力对汽车做功了C．起重机吊着重物上升．钢绳竖直向上的拉力对重物做功了D．足球在水平地面上滚动．足球受到的重力对足球做功了