（全国卷）2019届高考英语一轮复习unit4astronomy：thescienceofthestars课时作业新人教版必修3

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1、Unit4Astronomy：thescienceofthestarsⅠ.阅读理解AHowoftenhaveyoureadastorythatafriendorfamilymemberhassentyou？Verylikelyyouwouldhaveskippedthenewshaditnotbeenpointedouttoyou.TraditionallynewspapersandfamousTVchannelshavebeenoursourceofauthenticnews.Butthesedayswiththepopularityofsocialmedia，sharingstor

2、iesisincreasinglybecomingafavoritesourceofnews.Infact，researchsuggeststhatmorethanhalfthepeoplegettheirnewstodayfromsocialmediasuchasFacebook，TwitterandGoogle.Socialmediasitesoftenaggregatecontentsforustoseebasedontrendingtopics—storiesthathavebeenviewedbymanyothersaswellasbasedonourownpastsearc

3、hesandanalysisofourlikesanddislikes.Ifyouhavelikedkittensinthepast，youmayhavenoticedthatyouareseeingmorenews，blogsandanalysisaboutkittensallofasudden.Whileadvocatesoffreespeechdonotwanttocontrolanyvoice，itiscertainlyharmfulwhenitisdifficulttoseparatetruthfromfiction.Imaginetheinfluenceoffake(虚假的

4、)newswhenitbeginstoaffectourownlives.Trustingapieceofnews，patientscouldveryeasilyfallforwrongdiagnosis;elderscouldgivemoneytocheatsandreputationofperfectlyuprightcitizenscouldbeeasilyruined.Whataboutwhenweresearchforaschoolprojectandbaseouranalysisonfalseinformationornews?MarkZukerberghasfinally

5、acknowledgedtheissue.Amongseveralprojectsthatthecompanyisconsidering，Facebookistryingtotakepowerfulmeasurestocrackdownonfalsenews.Thiswouldincludewarninglabelsonfakecontents.Fakenewsalsomakesalotofprofitsfromadvertising.GoogleandFacebookhavesaidtheywilllimitadvertisingprofitsontheirnetworkfromsu

6、chsites.Thebottomline—don'tbelieveeverywordofwhatyouread.Domoreresearchfrommultiple(多样的)sourcestoensurethatthenewsisindeedtruebeforeyousharewithothers.[语篇解读]　本文为一篇说明文。现在社交媒体充斥着大量虚假信息，这些信息的传播对人们的生活危害很大。为了治理这种现象，一些社交媒体已经采取了一些措施。1．Whatdoestheunderlinedword“aggregate”inParagraph3probablymean?A．Analy

7、ze.　　　　　　B．Cancel.C．Gather.D．Rewrite.解析：词义猜测题。根据第三段最后一句可推知：社交媒体经常根据用户的浏览、搜索信息为用户收集信息，由此可见aggregate意为：gather(收集)。analyze“分析”；cancel“取消”；rewrite“改写”。答案：C2．WhatcanweinferfromParagraph4?A．Peopletendtobelievethenewsonsocialmedia.