初二阅读理解Dogs are friend of people.They work for us

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• 初二阅读理解Dogs are friend of people.They work for us
• 初二英语阅读理解 .Sports and games make our bodies strong,prevent us from getting too fat,and keep us healthy.But these are not their only use.They give us valuable practice in making eyes,brain and muscles work together.In tennis,our eyes see the ball coming,judge its speed and direction and pass this information on to the brain.The brain then arms,legs,and so on,so that the ball is met and hit back where it ought to go.All this must happen with very great s
• 初二上英语阅读理解There is an old English saying.It tells us that we must go to bed early and ger up early in the morning.Then we shall be healthy.We shall also be rich and clever.This is ture.The body must have enough sleep to be healthy.Children who do not have enough sleep cannot do their work well and they may not be healthy.The body also needs exersise.Walking,running,jimping and playing games are all exercse.Exersise keeps the body strong.Exercise also h
• 初二阅读理解Dogs are friend of people.They work for us
• 阅读理解Dogs are friends of man.They work for us.Dogs are friends of man.They work for us.They hunt for us.They play with us.But once,all over the world,dogs were wild.Thousands of years ago,man began to train the wild dogs .The strong dogs became working alone.They were trained to protect the heavy loads.Theylearnt to keep watching sheep and other animals.Wild dogs had other jobs,too.Some dogs were not strong.But they could help man hunt for games.Other
• 阅读理解Dogs are friends of man.They work for us.
• 一根绳子减去3分之2米,剩下的比减去的长4分之3.剩下多少米?
• 已知函数f(x)=msinx 根号2cosx.(m>0)的最大值为2