题目

关于x的方程 与 的解互为相反数. （1） 求m的值； （2） 求这两个方程的解. 答案：解：由x﹣2m=﹣3x+4得：x= 12 m+1，依题意有： 12 m+1+2﹣m=0， 解得：m=6； 解：由m=6， 解得方程x﹣2m=﹣3x+4的解为x= 12 ×6+1=3+1=4，… 解得方程2﹣m=x的解为x=2﹣6=﹣4.Gina is an English girl. She has a brother. His name is Mike. They are good students. Their father and mother are English teachers, and they work very long hours every day. So the family usually go to the park on Saturday or Sunday.Today is Saturday. It’s a nice day. They want to go there with their dog. They leave home at 8:30 a.m. and go to the park by car. They get there at 9:10 a.m. Gina and Mike start to play tennis. Their parents are under a tree. Their father reads a book and their mother listens to music. The dog plays on the grass. At 12:00 they have lunch in KFC in the park. In the afternoon they go boating. And they get home at 4:00 p.m. they are very tired, but very happy.【小题1】How many children are there in the family?A．Three.B．Four.C．Two.D．One.【小题2】What day is it tomorrow?A．It’s Saturday.B．It’s Sunday.C．It’s Monday.D．It’s Friday.【小题3】In the park, Gina and Mike         .A．drive a carB．read booksC．listen to musicD．play tennis【小题4】What do they do in the afternoon?A．Watch TV.B．Play sport.C．Go boating.D．Plant some trees.