题目

下列有关运动的说法正确的是 (     ) A． 图甲 A球在水平面内做匀速圆周运动， A球角速度越大则偏离竖直方向的 θ角越小 B． 图乙质量为 m的小球到达最高点时对上管壁的压力大小为 3mg，则此时小球的速度大小为C． 图丙皮带轮上 b点的加速度小于 a点的加速度 D． 图丙皮带轮上 c点的线速度等于 d点的线速度As we know, Chongqing has changed a lot. Most of the people feel much safer now. More and more trees are being planted in the city. And every day you can see many old people play sports everywhere. The change makes the people in the city live a happy life. The small survey below is from the people who live in Chongqing. One hundred persons were chosen to answer the questions last week.What they wantHealthSafetyFood52%33%15%Where they like to liveIn a quieter placeIn a busier placeIn a greener place15%5%80%What they think of working in the cityBadGoodNo idea8%80%12%Whether they plan to change their living placesYesNoDifficult to say39%41%20%【小题1】From the survey, _______ of the people in Chongqing care about health.A．41%B．80%C．39%D．52%【小题2】 Most people think working in Chongqing is _______.A．badB．goodC．hardD．sad【小题3】 From the survey, we know most people want to live ________.A．in a busier placeB．in a quieter placeC．in a greener placeD．on the mountain【小题4】 According to the passage and the survey, we know that ________.A．most people plan to change their living placesB．in Chongqing all the people have a lot of foodC．the people in Chongqing don’t like planting treesD．the change in Chongqing makes people enjoy living there