资源描述：
《2017-2018学年高中英语 unit 3 computers section ⅳ课时作业 新人教版必修2》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Unit3 SectionⅣGrammar—现在完成时的被动语态Ⅰ.单句语法填空1．Morethan100famousfilmshave_been_shown(show)inthecitysinceJuly.2．Sinceyourworkhas_been_finished(finish),youcanhavearestnow.3．Howmanycarshave_been_made(make)inthefactorysince1990?4．Threenewschoolshave_been_opened(open)in
2、ourcityinthepastfiveyears.5．It'sthefirsttimethattheoldcomputerhas_been_checked(check)sinceIboughtit.6．Greatchangeshave_taken(take)placeinmyhometownandyoucanseethatalotoffactorieshave_been_set(set)up.7．Theirnewcarshave_been_advertised(advertise)ontheInternetfor
3、alongtime.8．Alltheathleteshave_been_selected(select)frommillionsofpeoplealloverthecountryinthepasttwomonths.9．Anewlibraryandagymnasiuminourschoolhave_been_set(set)upsofarandtheywillbeputintouseverysoon.10．Agreatmanymachineshave_been_produced(produce)bythefacto
4、rysincethetechnologicalrevolution.Ⅱ.阅读理解Forayearandahalf,kidssenthurtfulmessageslike“Youaresougly.”or“Whyareyoustillalive？”toRebeccaSedwick.In2013,Rebecca,then12,couldn'tstanditanymore.ShejumpedtoherdeathnearherhomeinFlorida.Soonafterward,TrishaPrabhureadabout
5、thestory.“Iwassurprisedandheartbroken，”saysTrisha,now15,whoisfromNaperville,Illinois.“IknewthatIhadtodosomethingtostopthisfromeverhappeningagain.”Trishadidsomeresearch.StudiesshowthatonefourthtohalfofallteensintheU．S.havebeencyberbullied(网络欺凌).Expertssaythatif
6、youareeverbulliedonline,youshouldtellatrustedadult.Tellthecyberbullytostop,andpreventhimorherfromcontacting(联系)youagain.Printandsavemessagestosharewiththepolice.Thisisgoodadvice,agreesTrisha.Butthesemethodsalltakeplaceafterthebullyinghasalreadyhappened.Trishah
7、adadifferentidea.Whynotteachcyberbulliestostopbeforetheypostthesemessages?Trisha'sresearchwhoawards,includingaprizeintheGoogleScienceFair.Then,TrishabuilttheReThinkapp(应用软件).Itisprogrammedtorecognizewordsorphrasesthatcouldbehurtful.Whenthathappens,differentwar
8、ningmessagescomeout.“Don'tsaythingsthatyoumayregretlater！”saysonemessage.Othersask,“Areyousureyouwanttosaythis？”and“Arethesewordsreallyyou？”NowTrishaisworkingonaversion(版本)ofReThin
