Unit4Astronomy：thescienceofthestarsⅠ.阅读理解AHowoftenhaveyoureadastorythatafriendorfamilymemberhassentyou？Verylikelyyouwouldhaveskippedthenewshaditnotbeenpointedouttoyou.TraditionallynewspapersandfamousTVchannelshavebeenoursourceofauthenticnews.Butthesedayswiththepopularityofsocialmedia，sharingstoriesisincreasinglybecomingafavoritesourceofnews.Infact，researchsuggeststhatmorethanhalfthepeoplegettheirnewstodayfromsocialmediasuchasFacebook，TwitterandGoogle.Socialmediasitesoftenaggregatecontentsforustoseebasedontrendingtopics—storiesthathavebeenviewedbymanyothersaswellasbasedonourownpastsearchesandanalysisofourlikesanddislikes.Ifyouhavelikedkittensinthepast，youmayhavenoticedthatyouareseeingmorenews，blogsandanalysisaboutkittensallofasudden.Whileadvocatesoffreespeechdonotwanttocontrolanyvoice，itiscertainlyharmfulwhenitisdifficulttoseparatetruthfromfiction.Imaginetheinfluenceoffake(虚假的)newswhenitbeginstoaffectourownlives.Trustingapieceofnews，patientscouldveryeasilyfallforwrongdiagnosis;elderscouldgivemoneytocheatsandreputationofperfectlyuprightcitizenscouldbeeasilyruined.Whataboutwhenweresearchforaschoolprojectandbaseouranalysisonfalseinformationornews?MarkZukerberghasfinallyacknowledgedtheissue.Amongseveralprojectsthatthecompanyisconsidering，Facebookistryingtotakepowerfulmeasurestocrackdownonfalsenews.Thiswouldincludewarninglabelsonfakecontents.Fakenewsalsomakesalotofprofitsfromadvertising.GoogleandFacebookhavesaidtheywilllimitadvertisingprofitsontheirnetworkfromsuchsites.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．Analyze.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.B．Falsenewsisfashionableonsocialmedia.C．Falsestoriesaresharedquicklyacrosssocialmedia.D．Misleadinginformationharmsus.“解析：推理判断题。根据第四段中的Whileadvocatesoffreespeechdonotwanttocontrolanyvoice，itiscertainlyharmfulwhenitisdifficulttoseparatetruthfromfiction.”可知：误导人的信息对我们有害，故答案为D项。答案：D3．HowwillFacebookdealwithfalsenews?A．Tolabelfakecontentstowarn.B．Toforbidadvertisingonitsnetwork.C．Toprovethenewsfrommultiplesources.D．Toclosedownthesitesoffalsenews.“解析：细节理解题。根据第五段Thiswouldincludewarninglabelsonfakecontents.”(这包括给虚假信息做上警示标记)可知答案为A项。答案：A4．Whatmightbethebesttitleforthetext?A．KeepAwayfromFakeNewsB．NeverBlindlyBelieveAnythingYouReadC．RefusetoSpreadHarmfulInformationD．SeparateTruthfromFictionSkillfully解析：标题归纳题。本文主要介绍了现在一些社交媒体中充斥着大量的虚假信息，这些信息对人们有很大危害。因此作者告诫读者不要盲目相信媒体上的信息，在传播信息之前一定要确保信息的真实性。由此可见B项最适合作为本文的题目。答案：BBRunoutofcookingoilorneedsomedressingforyoursalad？Thesolutionmaybeinsectsfromyourbackyard！Scientistsareturninginsectsintoasourceofhealthyoil.Even...
