（二）健康话题。锻炼和饮食。Eat regularly,have three meals a day,cantn’t go to school without breakfast,shouldn’t eat too much junk food,eat enough fruit and vegetables,don’t eat too much meat,do sports evrey day,have a good mood...
（三）节约与浪费。Use both sides of the paper,use a beg when we go shopping,eat up all the food we pick up,turn off the lights when we leave a room,turn off the taps when we brush our teeth.
（四）The Internet make our life easier
We can search all kinds of information we want on the Internet.The news often comes earlier than newspapers and magazines.There are lots of books on the Internet.And we can read it freely.We can communicate with our frieds by QQ,wechat or e-mail without paying anything on the Internet.If we have problems,wo can ask for help on the Internet.we can go shopping withou going out.
(五）玩手机
As we all know,the world develops much quicker than before.,Many students use the mobile phone in the school.Now,let me tell you the advantage and the disadvantage.Many parent thinks use the mobile phone is bad for students.It will affect students’s study.Most students will play the games in class.And they will send the information to their friends.That’s too bad to them to study.But,using the mobile phone also have good things to students,They can call their friends when they are not in school.It will makes your friendship more close.And,if your parents can’t find you,they can call you at once.In a word,using the mobile phone have the good things and the bad things.The important is if you can contral yourself.
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