题干

如图,拨动簧片,把小球与支座之间的金属片弹出时,小球并没有____,是因为____.小球由于____落到小杯中.

上一题 下一题 0.0难度 选择题 更新时间:2019-09-29 09:07:13

答案(点此获取答案解析)

随金属片飞出,小球有惯性,受到重力作用

同类题1

      阅读下面诗歌,完成(1)~(4)小题。

                                                                                         风 暴

                                                                                          普希金

                                                                             你可看过岩石上的少女

                                                                              穿着白衣裙,立于波涛上,

                                                                              当海水在混乱的幽暗里

                                                                              和岸石游戏,澎湃和轰响,

                                                                              当电闪以它紫红的光线

                                                                              不断地闪出了她的形象,

                                                                              而海风在冲激和飞旋,

                                                                              扬起了她的轻飘的云裳?

                                                                              美丽的是这海,狂暴、阴郁,

                                                                              闪烁的天空没一块蔚蓝;

                                                                              但相信吧:岩石上的少女

                                                                              比波浪、天空、风暴更美丽。