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发布时间：2024-01-15 12:44:16 来源：文档文库

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2020届广州市第七十五中学高三英语月考试卷及参考答案
第一部分阅读（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项
A
IfyouaresendingatextmessagewatchingTVorlisteningtotheradio,youmaystopandgivethisyourfullattention.Multitaskingshrinks(使.....萎缩thebrain?researchsuggests.
Astudyfoundthatmenandwomenwhofrequentlyusedseveraltypesoftechnologyatthesametimehadlessgreymatterinakeypartofthebrain.UniversityofSussexresearcherssaid,"Usingmobilephones,laptopsandothermediadevicessimultaneouslycouldbechangingthestructureofourbrains."
Worryingly,thepartofthebrainthatshrinksisinvolvedinprocessingemotion.Thefindingfollowsresearchwhichhaslinkedmultitaskingwithashortenedattentionspan,depression,anxietyandlowergradesatschool.
Theresearchersbeganbyasking75healthymenandwomenhowoftentheydividedtheirattentionbetweendifferenttypesoftechnology.Thiscouldmeansendingatextmessagewhilelisteningtomusicandcheckinge-mail,orspeakingonthephonewhilewatchingTVandsurfingtheInternet.Thevolunteerswerethengivenbrainscanswhichshowedtheyhadlessgreymatterinaregioncalledtheanteriorcingu-latecortex(ACC(前扣带皮层.Scientistshaveprovedthatbrainstructurecanbechangedonexposuretofreshenvironmentsandexperience.
Otherstudieshaveshownthattraining—suchaslearningtoplaymagictricksortaxidrivers'learningthemapofLondon―canincreasegreymatterdensities(密度incertainparts.
Expertshavealsowarnedoftheharmfulimpacttechnologycanhaveonourmemoryandattentionspan.TheUniversityofCaliforniateamconductedasurveyofmorethan18,000peopleagedbetween18and99，andfound20%hadproblemswithmemory.Researcherswereshockedgreatlybythe14%of18to39-year-oldpeoplewhoalsoworriedabouttheirmemories.
Multitaskingmayshortenattentionspan,makingithardertofocusandformmemories,theresearcherssaid,addingthatyoungstersmaybeparticularlyaffectedbystress.
1.Theunderlinedword"simultaneously"inParagraph2means"________，"A.onone'sownB.atnotimeC.atthesametimeD.byaccident
2.AllofthefollowingarepossibleeffectsofmultitaskingEXCEPT________.A.savingtime

B.ashortenedattentionspanC.lowergradesatschoolD.depressionandanxiety
3.Whichofthefollowingcanbethebesttitleofthispassage?A.MediamultitaskingisbecomingmorepopularB.Multitaskingshrinksthebrain
C.MultitaskingmayshortenattentionspanD.Peopleareworriedabouttheirmemories.
B
Overtheyears,NASAhassuccessfullysentseveralrovers(飞行器toMars.WhilethesciencelaboratoriescontinuetoprovideimportantinformationontheRedPlanet,theykeepthespaceexplorationroversstayingclosetotheoriginallandingplace.Togetamorecomprehensive(详尽的viewofMars,theUSSpaceAgencyplanstomakeasmalltesthelicopterwiththeMars2020Rover,whichwillbesentoffinJuly2020.
Thefootball-sized“marscopter”weighsaboutfourpounds.ItcanflyatabouttentimesthespeedofhelicoptersonEarth.ThelightweightandfastspeedareimportantforthehelicoptertobeabletoflyinthethinMarsatmosphere,whichisaboutjustonepercentofthatofEarth.“TomakeitflyinthatthinMarsatmosphere,wehadtomakeeverythingready,andmakeitaslightaspossiblewhilebeingasstrongandpowerfulasitcanpossiblybe.“MimiAung,Marshelicopterprojectmanager,saidinameeting.
UponlandingontheRedPlanet,theMars2020Roverwillfindaproperlocationtosendofthehelicopter.Thehelicopterwillstartwithashortclimb,nohigherthan10feet,andhover(盘旋forjust30secondsbeforelandingbackontheMarssurface.Ifallgoeswell,fivemoreflightsoflongerdistances,for90secondseach,willbeconductedoverthenext30days.TheshortjourneyswillberecordedbyasmallcameraandsentbacktothescientistsonEarth.
Iftheplangoesonwell,thefirsthelicoptertoflyinanotherworld,willopenupawholenewwaytoexploreMars.TheMarshelicopter'sfirstflightwillbeagreatinvention.Forthoseofuswhoseresearchisaboutflight,thatwouldbeawonderful,historicmoment.
4.ToflyinthinMarsatmosphere，weshouldmakethehelicopter_______.A.strongandheavyB.heavyandfastC.lightandfastD.strongandslow5.Howmanytimeswillthehelicopterfly?

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