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1、Unit4Sharing一、阅读理解。Socialnetworksareabigpartofnearlyeveryteenager’slifeinthisdayandage.ManyteenshaveQQ,WeChat,orWeibobutlittledoalotofteensknowthattheycanbeheldresponsibleforeverythingtheypostfortherestoftheirlives.Everythingyoupostonlineispartofadigitalfootprintthatcanalways
2、betraced(追踪)backtoyou.Thatincludeseverypost,eveneverylike，ment,favoriteandforwardthatyouhaveevermitted.Allpicturesyou’vepostedorwillposthavebeenstoredinadigitaldatabase,anditisthepanies’righttokeepallofthesedocumentsthatyoubelievetohavebeendeletedorhidden.Witheverypostesacons
3、equence;whetheritisgoodorbad，whatyoupostcouldbeseenbyanyone.Thatiswhyyouhavetobeverycarefulofwhatyoudecidetopostorment.IfyouthinkyouaresafefromServitefindingoutaboutonefunnymentyoumadesixmonthsagoonameaninglesspicture,youareprobablywrong.Recently,asenior,Aaron,atServitelearne
4、dthislessonthehardwaythisyear.HewroteaseriesofuglymentstowardsConnellygirlsonawebpage,ignoringpotentialconsequences.Thisstudent,however,didhavetofaceconsequencesfromServiteashewasremovedfromallofhisleadershiprolesintheschool.Surprisinglyenough,hefullyagreedwithhispunishmentha
5、ndeddownbytheadministrationandfullyunderstoodwhyhewasgivensuchseverediscipline(处罚).“WhenyouagreetoetoServite,youareagreeingtodefendwhatServitestandsfor，”theyoungmansaid.“Thatcontinuesfrom8a．m.to2p．m.It’satalltimes.”So,nexttimeyou’reabouttopostsomethingyouthinkcouldbereceiveda
6、soffensiveorinappropriate,thinktwice,ordon’tpressthe“Send”．【解题导语】 本文是一篇议论文。当下很多青少年拥有微信、QQ、微博等网络社交工具，但是他们很多人都不知道要对自己所发布的内容负责。文章通过一名高中生的事例说明，在网上发布信息应当慎重。1．Whatdoestheauthorthinktheteensshoulddointhefirstparagraph?A．Avoidusingsocialmedia.B．Removetheirowndigitaldocuments.C．Beresp
7、onsibleforwhattheyputonline.D．Learntobalancetheironlineandofflinetime.C 解析：细节理解题。根据第一段第二句可知，很多青少年都有QQ、微信或微博，但很多人都不知道，他们应当对自己在网上发布的任何信息负责；据此可知，作者认为，青少年应当对他们发布在网上的信息负责，故C项正确。2．WhatmistakedidAaronmakeonline?A．Drawingsomemeaninglesspictures.B．Makingsomebadments.C．Failingtotakehis
8、lesson.D．Breakingdownaspecialwebpage.B 解析：细节理解题。根据第三段尾句可知，Aaron在一个网页
