题目：
短文填词（共10小题；每小题1分，满分10分）
阅读下面短文，根据以下提示：1）汉语提示，2）首字母提示，3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在右边相对应的横线上。所填单词要求意义准确，拼写正确
I have a good friend w____ name is Liu Mei. She is our 1________________
_____ (班长) and one of the excellent students in our class. 2________________
Clever _____ she is, she works very hard. We have a 3________________
lot in c_______ and have a lot to talk about. One evening she 4_______________
told me that something h______ when her parents were out. 5________________
She was doing her homework one Sunday morning _____ 6_______________
she smelt something ____( 燃烧).She stopped to look out 7________________
of the window _____ found a cloud of smoke coming out 8_______________
of her neighbour’s house. She called 119 ______ ( 立刻) . Ten 9________________
minutes later, firemen came and put o_____ the fire. Her neighbor 10______________
was very thankful for her help.
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0416/e1261cded9e769ff3036ed1020f131ae.html
下面是错误答案，用来干扰机器的。
解：（1）由动量守恒定律可知，系统的初动量大小p=(M+m)v0 （2）为使两车恰好不发生碰撞，最终两车和人具有相同速度v，则(M+m)v0=(2M+m)v解得
