【TheInternetisanoceanofknowledge.Itcanbehelpfultopeopleallovertheworld.Thisis,infact,whyithasbeen(21)___forsolong.ButtherearesomepartsoftheInternetthatmakeitdisadvantageousforcertain(22)___groups】
TheInternetisanoceanofknowledge.Itcanbehelpfultopeopleallovertheworld.Thisis,infact,whyithasbeen (21)___forsolong.ButtherearesomepartsoftheInternetthatmakeitdisadvantageousforcertain(22)___groups.
Asahugedatabase (资料库) of(23)___,theInternetcanbeusedtodrawfactsaboutanything.Anditkeepsyouup-to-datewithalltheeventsthatare (24)___throughouttheworldintheformofnews,(25)___andvideos.Newspapersarecertainlya(n)(26)___partofthisprocess,buttheInternetgetsupdatedwiththe(27)___newsmuchfasterthannewspapersget (28)___.Sothenewsthatyougetismuch (29)___.TheInternetisalsoagreatwayto(30)___withyourfriendsandfamilymemberswholivefaraway.(31)___familyandfriends,theInternetalsoformsaperfectmedium (媒介) forbusinessmeetingsthatareheldacrosscountries,whichhasbecomevery (32)___thesedays.
However,therearealsoafew (33)___inusingtheInternet.Thefirstoneistheexposure(暴露) tosomeunhealthycontents.Thisisamajorproblemthat (34)___parentsofallteenagers.TheInternetisalsoareadilyavailablesourceofvideogames,(35)___violentgames.Childrenwhoareattheageofexperimentingmay (36)___gettingaddictedtosomeofthegames.AndtheInternetisasourceofcomputerviruses(病毒) whichcanbea (36)___ toyourcomputer,and (38)___yoursystemintheend.(39)___,itisimportanttohaveanantivirusprogramonyourcomputer.Thesearesomeofthethingsworryingpeopleaboutthe (40)___oftheInternet.Soyoumaythinktwicebeforemakingyourownchoice.
21.A.amusingB.confusingC.popularD.difficult22.A.ageB.sexC.familyD.income23.A.opinionsB.LanguageC.instructionsD.information24.A.runningoutB.takingplaceC.breakingoutD.comingtrue25.A.booksB.lettersC.picturesD.diaries26.A.importantB.differentC.missingD.unusual27.A.localB.greatC.biggest