一位同学进行“用打点计时器测量自由落体的加速度”实验：

古诗词鉴赏。
                                                                                             次北固山下 

                                                                                                  王 湾
                                                                                 客路青山外，行舟绿水前。
                                                                                 潮平两岸阔，风正一帆悬。
                                                                                 海日生残夜，江春入旧年。
                                                                                 乡书何处达？归雁洛阳边。