Nowadays,withtherapiddevelopmentofITandinformationindustry,cellphonesplayadominantroleintownspeople'slife.But,likeeverythingelse,theyhavebothfavorableandmffavorahleaspects.First,it'suseful.Asawirelessmobiletelephone,it'seasyandhandytoearlytowhereveronegoesandcallthecalleehoweverfarawayheis.Therefore,itgreatlyfacilitatespeople'slife.Second,it'sconvenient.Wheneveronemeetstroubleorsomethingurgent,onecannmkeacallimmediately.Mostimportantofall,it'saveryhelpfulcompanion.Withamultirfunctioncellphoneinhand,onecaneasilygetontheNet,browsingtheusefulinformation,conductinge-commerceanddoingwhateveronecandoviaInternet.However,justaseverythinghastwosides,thecellphonealsohasmanydisadvantages.Lastbutnotleast,it'sallegedthemicrowavesinitmightdoharmtopeople'shealth.Inmyopinion,withitsexpensesgreatlyreducedafterChina'sentryintotheWTO,itwillfaceaneverbrighterfutureinitsdevelopment.OnOpportunitySomepeopleregardopportunityasthemostimportantpartoftheirlife.It'sthewaytosuccess.Sowhentheyseetheirfriendssucceed,theywillcomplainthattheyarenotluckyenoughtohavetheopportunity.Butotherpeoplethinkthatopportunityissheerluck,withtheirhardwork,knowledgeandskill,opportunitywillbewaitingforthemeverywhere.Althoughtheattitudestowardsopportunityaredifferent,opportunityisimportantindeed,andnooneshouldneglect.Itcanmakeapersonsuccessful.Weshouldgraspeveryvaluableopportunityandmakegooduseofit,otherwisenothingcanbeleftwithusbutregretanddisappointment.ButIthinkitisnotopportunityitselfthatdecidesaperson'ssuccessorfailure.Itisfairtoeveryperson,Ithink.Tograsptheopportunity,weneedknowledge,skillandexperience.Inaword,opportunityisimportantbutnotdecisive.