Internet has been playing a more and more important role in our daily life.It's fast and convenient for us to get information.We can use it to talk to differnt people in the world.Futhermore,a majority of people go shopping online in which internet is a key factor.However,it may let people get in troble if they dodn't use it correctly.There are a lot of tenenagers who are addictated to playing computer games and many people are cheated by their e-pals.Therefore,we'd better treat it rationally.?????????????????????а???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????ò?????????????????????鷳?С????????????????????????????????Щ??????????????????????????????????????????????ú???????????????