Withthedevelopmentofthescienceandtechnology,thecomputerhasbeenbecomingthenecessityforpeopleinthe21stCentury.Following,networkisofcloselinkwithourlife,bringingusincomparableconvenienceonourlifeandwork.

　　Throughthenetwork,wecansearchforusefuldatasandgettoknowthecurrentevents.Whenyouplaycomputergamesafteralong-timework,itcanrelieveyourpressureandmakeyoufeelrelaxed.Besides,playingonlinegamesisnotallbad,foritcanfulfilstudentsentertainingrequestsaswellaspractisetheirresponseability.

　　However,therestillexistssomedisadvantagesinthenetwork.Theradiationfromthecomputerwilldoharmtopeopleshealthifyoukeeponwatchingthecomputerforalongtime.Andshortsightmaycausedbyitforyoureyesstaytense.Atpresent,therearetoomanygamesontheInternet,butsomeofthemarenotofgoodqualityevencontainsomeunhealthycontentlikeviolenceandsoon.Duotothelackofrecognizingsocietyandself-protectionawareness,somestudentsgetaddictedinthegamesandonlinedating.Infact,networkisnotthathorrible,aslongasweknowmoreaboutit,itwillbecomeourrighthandonourstudies.Letsbuildacleannetworkworldtogether.

　　Acoupleofyearsago,individualscanonlytakecoursesatrealschools.Inotherwords,onlywhentheygoouttoschoolsbythemselveswilltheyhavelessonswhichtheywanttohave.Howeverinrecentyears,withthedevelopmentofinternetandeducationmode,onlineteachinghasbecomeincreasinglycommon.Thiskindofteachingmodemeansthatastudentjustneedstohaveclassessittinginfrontofacomputerathome,whichappealingtolotsofpeople.

　　Itiswidelyacknowledgedthatonlineteachinghasitsapparentmerits.Firstandforemost,sharedresourcesonlineareaccessibletoallpeople,whichcostsalittleatthesametime.Thisfeaturebringsaboutsignificantbenefitsespeciallytothosewhofailtoaffordthatmanycoursesatrealschools.Secondly,onlineteachingmakesitcomearealitythatoneisabletostudyatthebestpacesuitableforhimaccordingtohisownschedule.Lastbutnotleast,studyingathomewithoutgoingoutismuchmorecomfortableaswellasconvenienttobusypeopleincontemporarysociety.

　　Meanwhile,thereisnodenyingthatonlineteachingalsohasdemeritsthatcannotbedismissed.Foronething,onlineteaching,notlikeface-to-faceteaching,lacksinteractionbetweenteachersandstudents,causingteachersnottoreceivefeedbacksfromstudentsintime.For

　　anotherthing,forpeoplewhoarepooratself-discipline,learningonlineathomewillbealesseffectivewaysincetheyareeasiertobedistractedbyotherthings.Besides,allofonlineteachingcoursesareready-maderatherthancustom-made,thatistosay,itistroublesometobeflexiblewhenchangesareneeded.