题目

解分式方程： 答案：方程两边同乘以x（x+1），得 3＝x（x+1）﹣3x 去括号，得 3＝x2+x﹣3x 移项及合并同类项，得 x2﹣2x﹣3＝0 ∴（x﹣3）（x+1）＝0， 解得，x1＝3，x2＝﹣1， 经检验，x＝3时原分式方程的根，x＝﹣1不是原分式方程的根， ∴原分式方程的根是x＝3．根据句意及所给的词首字母或汉语提示，补全单词。(注意：须把完整的单词写在答题卷的相应位置)【1】Here is some boiled water. Have a drink whenever you are t______.【2】We have to c______ the sports meeting because of the heavy rain.【3】The governments should develop l______ to stop people from killing sharks.【4】What an ______(丑陋的) picture! The park was badly polluted.【5】A recent _____ (调查) showed 75% people like playing cell phones in their free time.