小菊送小夏上火车,突然听到火车一声长鸣,只见并列的一辆列车徐徐向后离去,于是小菊急着要下去,小夏朝着窗外看了看,又看了看手表说:别急,我们乘的列车还没开呢。这究竟是怎么回事,都坐在火车上,可是两人对火车的运动情况却说法各一。别急,看完下面的内容你就明白了。1.运动的世界我们可以从四季变化看到运动的普遍性:风筝迎风摆动;蚊虫灯下飞舞;秋叶随风飘落;冬天的雪花飞落。总之,我们身边的一切物体都 Small chrysanthemum to send Xia Xia on the train, suddenly heard the train soon as long, I saw a parallel train slowly left, so Kikuchi anxious to go on, Xiao Xia looked out the window and looked at the watch and said: do not Urgent, we have not opened the train yet. This is exactly what happened, are sitting on the train, but the two on the train movement is one argument. Do not worry, after reading the following content you understand. 1. The world of sports We can see the universality of sports from four seasons: the kite winds up and down; the mosquitoes fly under the lights; the autumn leaves fall in the wind; the winter snow falls. In short, all the objects around us are