题目

请你根据以下信息提示,介绍一款时尚手机。1). 作为高科技产品；这款手机在国内外被广泛地使用。2). 主要功能：通话、发短信、上网、照相、玩游戏等。3). 体积小,重量轻易携带,适用于各年龄段人群。注意：词数100词左右（开头已给出,不计入总词数）。Being a product of high technology,…… 答案：Being a product of high technology, the mobile phones are being more and more widely used. They are perhaps the most popular means of communication all over the world today. They are small in size, light in weight and easy to carry, offering fast and convenient services for communication. The users can use them for calling, sending short messages and Internet-surfing. Besides, they can be used to 如图所示，表面粗糙的斜面固定于地面上，并处于方向垂直纸面向外、强度为B的匀强磁场中质量为m、带电量为+Q的小滑块从斜面顶端由静止下滑在滑块下滑的过程中，下列判断正确的是 [     ]A.滑块受到的摩擦力不变 B.滑块到达地面时的动能与B的大小无关 C.滑块受到的洛伦兹力方向垂直斜面向下 D.B很大时，滑块可能静止于斜面上