Nowadays,thecomputerisquitepopulerinourdailylife.Itseemsthatwecannotworkwithoutthecomputer.Officeworkersusethecomputertogetcontactwithpeopleabroadbyemail.TeachersusethecomputertomakePPTforteachingandengineersusethecomputertoanalyzethedata.Computersexistineveryaspectofourlife.However,someonealsousecomputerstocausedamagetoothers.Forexample,thehackerhacksintoothers'computerstostealtheinformationortheycreatecomputervirusandcirculateitontheInternet.Someonealsousecomputerstocirculatepornographyandviolence.

　　Hence,weshouldusecomputersinarightway.Letcomputersbeourgoodassistantsratherthandestructors.

　　已经在细节处修改