题目

按要求完成下列句子。 (1) We have black and white shorts.(改为否定句) (2) What can I do for you?(改为同义句) (3) The ice-cream in our store is three yuan. (对画线部分提问) (4) My brother buys a hat in the clothes store.(对画线部分提问) (5) Are these model planes 200 yuan?(作肯定回答) 答案:We don't have black or white shorts. Can I help you? How much is the ice-cream in your store? What does your brother buy in the clothes store? Yes, they are.如图所示,纵坐标表示两个分子间引力、斥力的大小,横坐标表示两个分子间的距离,图中两条曲线分别表示两分子间引力、斥力的大小随分子间距离的变化关系,e为两曲线的交点,则下列说法正确的是(  )A. ab为斥力曲线,cd为引力曲线,e点横坐标的数量级为10-10 mB. ab为引力曲线,cd为斥力曲线,e点横坐标的数量级为10-10 mC. 若两个分子间距离大于e点的横坐标,则分子间作用力表现为引力D. 若两个分子间距离越来越大,则分子力越来越大E. r<r0时,r减小,分子力增大
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