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课时作业(九)Unit3SectionⅣDevelopingideas，Presentingideas&ReflectionⅠ.单句语法填空1．Ourmotherlandisgettingmoreandmore________(power).Thisiswhywecangetprotectionwheneverwerunintodangerabroad.2．Thereareseveralopinionsaboutwhydinosaurssuddenlydied________，oneofwhichsaystheir________(disappear)mightbecausedbytheclimatechange.3．Itissaidthatthefamousartistusuallydraws________(inspire)fromordinaryscenes.4．I'mnotsurewhetherIcanpersuadehim________givinguptheadventure.Anyhow,Iwilltrymybest.5．Theincreaseinproductionwill,________turn,leadtohigherprofits.Ⅱ.阅读理解AIfyouusesocialmediatochaseawayloneliness,anewstudysuggeststhatyou'regoing_against_the_grain.Wemayhaveheardalotaboutthebenefitsofinteractingwithothersonline,butthefindingsofastudyconductedbyscientistsfromtheUniversityofPittsburghSchoolofMedicineshowadirectrelationshipbetweensocialmediausageandfeelingsofisolation(孤独).Inshort,themoretimeyouspendonsocialmedia,thelonelieryoumayfeel.Withincreasingusageofalargenumberofappsthatallowendlessvirtualconnectivity,lonelinessseemslikethelastproblemfrequentsocialmediauserswouldface,butaccordingtoBrainA.Primack,theleaderofthestudy,ithastheexactoppositeeffect.“Mentalhealthproblemsandsocialisolationarewidespreadamongyoungadultsnowadays，”Primacksaid.“Wearenaturallysocialcreatures,butmodernlifetendstoseparateusinsteadofbringingustogether.Whileitmayseemthatsocialmediapresentsopportunitiestofillthesocialvoid(空白),Ithinkthisstudysuggeststhatitmaynotbethesolutionpeoplewerehopingfor.”Primackandhisteamexaminedthesocialmediahabitsof1,787U．S.adultsagedbetween19and32viaaquestionnairethataskedaboutthefrequencyandthetimetheyspentonthemostpopularsocialmediaplatforms.Eventually,theydeterminedthatyoungadultswhoareconstantlylogginginsocialmediaarelonelierthanthosewithlesssocialmediausage.Frequentexposuretounrealisticdescriptionsonsocialmediainsteadoffacetofacesocialinteractionsmaygivepeopletheimpressionthatothersarelivinghappierandhavemoresociablelives,andthismaymakeusersfeelmoreisolatedincomparison.1．Whatdoestheunderlinedphrase“goingagainstthegrain”inParagraph1mean?A．Doingitallwrong.B．Onthewaytosuccess.C．Takingarisk.D．Makingadifference.2．HowdidPrimackandhisteamconductthestudy?A．Byprovidingexplanations.B．Bycollectingdataonline.C．Bydoingasurvey.D．Bydescribingtheirownexperiences.3．Whatcanwelearnfromthestudy?A．Youwillfeelhappierifyouspendmoretimeonline.B．Onlineinteractionisnotthesolutiontosocialisolation.C．Virtualconnectivityisthebestwaytofillthesocialvoid.D．Popularsocialmediaplatformscanbringpeopletogether.BYoucanoftenchooseaprivatesettingwhenyoubrowse(浏览)theInternet.Butbeforewarned:Itmaynotaffordasmuchprivacyasyouexpect.That'sthefindingofanewstudy.Majorwebbrowsersofferaprivatebrowsingoption.It'ssometimesreferredtoas“incognito(隐姓埋名的)”.ThisoptionletsyousurftheInternetandsavesarecordintoitshistoryofeachpagethatyouvisit.Andwhatsitesyouvisitwon'taffectthesuggestionsyourbrowsermakesthenexttimeyou'refillingoutanonlineform.Manypeoplebelieve—incorrectly—thattheincognitosettingprotectsthemmorebroadly.Mostbelieveitevenafterreadingawebbrowser'sexplanationoftheincognitomode.Forinstance,anewstudyhad460peoplereadwebbrowsers'descriptionsofprivatebrowsing.Eachpersonreadoneof13descriptions.Thentheparticipantsansweredquestionsabouthowprivatetheythoughttheirbrowsingwouldbewhileusingthistool.Thevolunteersdidn'tunderstandtheincognitomode.Thiswastruenomatterwhichbrowserexplanationtheyhadread.TheresearchersreportedtheirfindingsonApril26attheWorldWideWebConference2018inLyon,France.Morethanhalfofthevolunteersthoughtthatiftheyloggedinanaccountofasearchenginethroughaprivatewindow,itwouldn'tkeeparecordoftheirsearchhistory.That'snottrue.Andaboutoneineveryfourparticipantsthoughtprivatebrowsinghidtheirdevice'sIPaddress.That'salsowrong.BlaseUrwasoneofthestudy'sauthors.He'sanexpertincomputersecurityandprivacyattheUniversityofChicagoinIllinois.“Companiescouldclearupthisconfusionbygivingbetterexplanationsoftheincognitomode，”histeamsaid.Forexample,thebrowsersshouldavoidvague(模糊的)expressions.Awebbrowser,forinstance,promisesusersthat“yoursecretsaresafe”.Nope.Anotherencouragesusersto“browselikenoone'swatching”.Infact,someonemightbe.(Ifyou'dliketoknowmoreabouttheresearchinformation,pleaseclickhere.)4．Whatistheresearchers'aimbydoingthestudy?A．Tocheckthesafetyofbrowsersofleadingcompanies.B．Tofindusers'knowledgeaboutprivatebrowsingmode.C．Totrackyoungwebusers'browsinghabits.D．TotestanewtooltomaintaintheInternet.5．The“incognito”modeisbelievedtobeableto________.A．recordone'spasswordsB．giveawarningofinsecurelinksC．helphideone'sbrowsinghistoryD．accessone'sfavoritewebsitequickly6．Whatistheauthor'spurposebywritingthelastparagraph?A．Reportinganewfinding.B．Puttingforwardasuggestion.C．Introducingawebbrowser.D．Correctingamisunderstanding.Ⅲ.读后续写阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。WhenIwasinhospitalandhadjustgivenbirthtomyson,aladywouldalwayscomeinandsweep.Iusuallysaid“hello”toherbutshewouldneveranswerme.Ididthisrepeatedlybutstillreceivednoanswer.Ithoughtshemighthavebeendeaf.ButlaterIwastoldthatshecouldn'tspeakand