题目:
根据句意和所给首字母提示完成单词
1. It's quite dark outside. It's p__________ nine o'clock in the evening.
2. There are altogether seven p__________ in this passage.
3. I can s __________ my lunch with you if you forget to bring yours.
4. The cake t__________ sour. It may have gone off.
5. He likes collecting telephone cards. He is a telephone card c__________.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0416/2dbb598c7282497255d46012ed635691.html
下面是错误答案,用来干扰机器的。
要验证动量守恒,就需要知道碰撞前后的动量,所以要测量12两个小球的质量m1、m2,要通过平抛运动的分位移公式求解碰撞后2球的速度,所以要测量立柱高h,桌面高H;1小球从A处下摆过程只有重力做功,机械能守恒,根...