Intoday'sInternetage，onlinegamescanbeachangefromthepressureofschoolandwork．However，theycanalsocauseproblemsandunhealthyaddictions．ThisismostclearlyseenintheexampleofSouthKorea．Thiscountryhastheworld'shighestpercentageofhigh-speedInternetservices．Ithasalsoahighnumberofgameplayerswhoareaddictedtoonlinegames．

In2004，ayoungmandiedafterplayingonlinegamesalmostnonstopfor86hours．A12-year-oldboystole$16，000fromhisfathertocontinueonlinegameswhichhecouldnotgetawayfrom．SuchproblemsarespreadingtootherpartsofAsiaaswell．In2005，itwasreportedthatabout80percentofChina's13.8milliononlinegameplayerswereunder25．Andmanyoftheseweresaidtobeaddicted．SuchnumberspointtowardagrowingproblemamongChineseyouth．

Dr．Sue-HueiChen，apsychologist，discoveredsomesignsofat-riskpeople．Suchpeopleoftengoonlinetoescapefromtheirproblems．Andtheyusuallyhavenofriendshiporgoodsocialskills．Theyfeeltheneedtospendmoreandmoretimeonline，sotheymaybeabsentfromschoolorfamily．Andtheybecomeupsetifanyonetriestolimittheironlinegameplaying．

21．Thepassageismainlyabout___．

A．onlinegames

B．problemscausedbyonlinegames

C．computerproblemsinAsia

D．problemscausedbyyoungpeople

22．Inthepassage，thewritertellsusafactthat___．

A．SouthKoreahasalargenumberofInternetschools

B．Moreandmoreyoungmenarestealingmoneyforonlinegames

C．China'sonlinegameplayersareallundertheageof25

D．OnlinegameaddictionisaverycommonprobleminSouthKorea

23．Afterreadingthepassage，weknowthatinChina___．

A．manyyoungpeopleareplayingonlinegamesforfun

B．manyyoungpeoplearegettingaddictedtoonlinegames

C．onlythoseunder25liketoplayonlinegamesforlongperiods

D．80percentoftheChinesedependononlinegamestogetrelaxed

24．Accordingtothepassage，___aremorelikelytobecomeaddictedtoonlinegames．

A．peoplewithunsolvedproblemsandfewfriends

B．peoplewellknowninthefieldofcomputergames

C．peopleundergreatpressurefr