题目

如图所示，一固定斜面的倾角为α，高为h，一小球从斜面顶端沿水平方向落至斜面底端，不计小球运动中所受的空气阻力，设重力加速度为g，则小球从抛出到离斜面距离最大所经历的时间为A．     B．     C．     D．  答案：A解析:略 英语课上,老师要求同桌同学相互修改作文。假设以下便条为你同桌所写，请你对其进行修改。便条中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。 增加：在缺词处加一个漏词符号（^），并在此符号下面写出该加的词。 删除：把多余的词用斜线（\）划掉。 修改：在错的词下划一横线，并在该词下面写出修改后的词。 注意：1．每处错误及其修改均仅限一词。 2．只允许修改10处，多者（从第11处起）不计分。 3．必须按答题要求做题，否则不给分。 The winter holiday is coming, which made me excited. I have been looking forward at relaxing myself. I’d like to go skating, climb mountains and see several movie. I think I can play the basketball with my classmates. How a wonderful time I’ll have during the winter holiday! However, my parents think different. They don’t want me go out. They are afraid I’ll be knocked down by a truck, fallen off a tree, or fight with others. Besides, they are afraid I will lose my way. I hate being treated like a bird keeping in a cage. To get more freedom, so I will try to persuade them.