2019年中考英语专项练习阅读理解之科普知识与现代科技

2019年中考英语专项练习一阅读理解之科普知识与现代科技含答案第一节阅读理解。根据短文内容，从每题所给的A、B、C、D四个选项中选出最佳答案。AArtificialintelligence(AI，人工智能)canhelpusmakephonecalls.Itcanguideustowherewewanttogo.Itcanplaygames.Andnow，AIcandoevenmorethings.ResearchersfromMicrosofthavecreatedthefirstmachinetranslationsystemthatcantranslatenewsarticlesfromChinesetoEnglish.Theresearcherstestedthesystembyaskingittotranslatehundredsofsentencestakenfromnewsstories.Then，languageexpertscomparedtheresultstothetranslationthatweredonebyhumans.Theexpertssaidthatthesystem,stranslationswereasgoodasthehumantranslations.Expertsusedseveralmethodstoimprovethesytem,stranslationabilities.“Muchofourresearchisreallylearnedfromhowwehumansdothings,”leadresearcherLiuTieyansaid.Onemethodiscalledduallearning对偶学习).InthismethodthesystemtranslateseverysentencefromChinesetoEnglish，aswellastranslatesthesentencesbackfromEnglishintoChinese.Thiswa，ythesystemcanimproveitselfandlearnfromitsownmistakes.Thisissimilartowhathumansdotomakesuretheirtranslationsareexact.Anothermethodmakesuseofdeliberationnetworks推敲网络).Theresearcherstaughtthesystemtorepeattheprocessoftranslatingthesamesentence)verandover.Gradually,thesystemcanimprovethequalityofitstranslations.Thisissimilartohowpeoplecorrecttheirownwritingbygoingthroughitagainandagain.( )1.Microsoftcreatedasystemthatcan.makephonecallsgivepeopledirectionsplaygameswithpeopletranslatenewsarticles( )2.Whatdidtheexpertssayaboutthesystem,stranslations?Theywerenotexact.Theywereasgoodashumantranslations.Theywerebetterthanhumantranslations.It,shardtotellwhetherthetranslationswerecorrect.( )3.Duallearningtrainsthesystemtotranslate.morequicklydifferentsentencesmoreexactlythesamesentencerepeatedly

( )4.Theunderlinedword“it”inthelastparagraphrefersto,duallearningtheprocessthesystempeople,sownwriting( )5.Thepassagewantstotellus.whatartificialintelligencecandoforushowsentencesaretranslatedfromChinesetoEnglishhowthemachinetranslationsystemwasdevelopedwhyMicrosoftcreatedamachinetranslationsystemBTeenagersareknownforbeingcreativeandfullofnewideas.Let'shavealookattheseteenageinventionsthatmightchangetheworld.Bananaleavesusuallygobadintwooithreedays.TenthHadith,ateenagerfromIndia,usedUVtomaketheleavesstayfreshforayear.Tenththinksthatonedaytheleaveswillbeusedformakingplates,cupsandotherthings.DavidCohen,anAmericanteenager,builtanearthworn蚯蚓)robot.Itisabletogointothesmallestplaces,wherehumansordogscan'tgo.Itwillbeusedforfindingpeopleinafireoranearthquake.RemyaJose,a14-year-oldfromIndia,foundittiringandboringtohandwashclothesinthenearbyriver.Shereusedsomebicyclepartsandcreatedawashinmachinethatsavestime,energyandkeepspeoplefitatthesametime.KennethShinozuku,a15-year-oldfromNewYork,noticedthathisgrandfatherwhogotAlzheimer7sdisease(老年痴呆)wouldoftenleavehomeandgetlost.Soheinventedthewearablesensors感应器)tohelppeoplefindtheirfamilymemberslikehisgrandfather.( )1.Whatisthepassagemainlyabout?PopularadsUsefulmachinesStrangepictures.Teenageinventions( )2.TheearthwormrobotbyDavidCohencan,makethingsstayfreshhelppeoplewashclothesgointothesmallestplacesD.takecareoftheoldpeople( )3.WhichofthefollowingisTRUEPlatesandcupsaremadeoffreshbananaleaves.Remya,swashingmachinecanalsokeeppeoplefit.DavidCohenisamiddleschoolstudentfromIndia.Kenneth,swearablesensorswillkeepoldpeopleathome.CTechnologyiseverywhere.Weseeitanyplacewegoandinfact,almostallofuscarrysomepieceoftechnologywithuseverytimeweleavethehouse.WhatIalwaysforget,though,isjusthowusefulandpowerfultechnologycanbewhenwewanttohelpothersThereisnotasingleroominmyhousethatdoesnothavesomeelectronicdevices设备)lyingaroundinit.WheneverIamathome,Iamalmostalwaysusingatleastoneelectronicdevice.Ifyouwalkedintomylivingroomonanygivenday,youwouldfindthat,first,Ihavethetelevisionon.Atthesametime,IusuallyhavemylaptoprestingonmykneeorIwillbeusingmymobilephoneEvenwheni'mnotathomeIamalwaysusingmyphon,eandatworkorincafes,Isitdownandconnecttothelocalwirelessnetworkonmyopic.ImustsaythatIwastealotoftimeonthecomputerandthetimeIspendonitcouldbemuchbetterspentifIweretotakeupalittleonlinevolunteeringThetechnologywecarryabouteverywherecanhaveagreatpowertodogoodfortheworldandtohelpothersandrecentlyIdiscoveredjusthowmuchonlinevolunteeringthereistodointheworld.Fromusingyourlanguageskillstodotranslations,todevelopingandmanagingprojectsandhelpingwithITwork,thereissomuchthatsomanypeoplecandotohelppeopleintheirowncountriesandacrosstheworld.TheUnitedNations,infact,hasahugepagewith"VolunteersRecruited"onitswebsite.Thisworkcansupportthepoorandhelpcharitieswhocannotpayforstaff.Manyorganizationsonlyrequireyoutoworkanhouraweek-someevenless.Andthesupportprovidedbyonlinevolunteerscanreallyhelpmakeadifferencetothoseinneed.( )1.FromParagraph2,wecanknowthatthewriterusestechnologyalot B.worksinacafeD.likesmodernmusicC.isacomputerengineerD.likesmodernmusic( )2.TheunderlinedwordRecruited"inParagraph4means"”A.Ordered B.Wanted C.Visited D.Warned( )3.Inthewritersopinion，peopleshouldspendmoretime withtechnology.A.workingoncomputerprogramsB.keepingtheInternetsafeC.inventingelectronicproducts D.helpingpeopleinneed( )4.Whatcanbethebesttitleforthepassage？A.WebsiteDesign B.InternetOrganizationsC.OnlineVolunteering D.OnlineTranslationDDoyoufinditdifficulttoputdownyourmobilephone?Ifyes，you,renotalone.Thesedays，manypeoplearefacingthestressintheuseofmobilephones.Theyreachfortheirmobilephoneswhentheywakeupinthemorning，andkeepcheckingtheirsocialmediaappstogetthelatestupdates®新).AreportfromGoogleshowsthat70percentofpeopledon,twanttospendmuchtimeontheirphones.ThisiswhyGoogleintroducedanappcalledDashboardforthenewAndroidoperatingsystem安卓操作系统).Thisnewappincludesfunctions功能)thathelpusersmanagethetime.Forexampleuserscanseehowmanytimesthey,veunlockedtheirphone,howmanytimesthey,vecheckedtheirsocialmediaapps,andhowmuchtimetheyspendoneachappeveryday.Oncetheusersseethisinformation,they,llbeabletomakesomechanges.WiththeAppTimer(计时)function,userscansetatimelimitforhowlongtheycanuseeachappforeveryday.Afterthey,vehitthelimit，theywon,tbeabletousetheappuntilthenextday.Andwithanotherfuncti，ontheappgetsincomingcallssilentwhentheuserputsthephonefacedown.Ifpeopletrulywanttomakefulluseoftheirfreetimeinsteadoflosinghoursontheirphone，sthesenewfunctionsarejustonewayofdoingthat.Afterall，whoneedstouseanapptostopyoufromusingotherapps?Theeasiestanswerwouldbejusttouseyourwillpower.( )1.Wheredoestheusers,stresscomefrom?A.Toomanyupdatesoftheapps.Toomanyfunctionsoftheapps.Toomuchinformationtheyreceive.Toomuchtimetheyspendonthephone.( )2.WhichofthefollowingsisNOTincludedinDashboard,sfunctions?Itstopstheusersfromusingtheirwillpower.Itcheckshowmuchtimetheusersspendonapps.Itlistshowmanytimestheusershaveunlockedthephone.Itshowshowmanytimestheusershavecheckedsocialmediaapps.( )3.Whatdoestheunderlinedword“limit”inParagraph4mean?A.目的B.标准C.许可D.限制( )4.WhatdoesthewriterthinkofDashboard?Itsdesignisperfect.Itmaybehelpfultosomepeople.Itneedsmorefunctions.Ithastoomanyfunctions.EShynesscanbeanunhappyfeeling.Butthegoodnewsis,you,renotalone.Scientistssaythatmorethan40percentofteenagersandadultsconsiderthemselvesshy.Shynessisfeelingalittlenervousorasifyouwanttohidewhenyou,rearoundotherpeopleorinanewsituation.Scientistssaysuchthingsasgenetics(遗传基因)，lifeexperiences,andenvironmentcaninfluencewhetherapersonisshy.Forexample,insomefamilies,everybodyseemstobeshy.Whathappensifyouareshy?Well,beingshymaycauseyoutoavoidormissopportunitiesyouwouldenjoy.Howdopeopleovercome克服)shyness?ThisiswhatGilberttellsus."WhenIstartedofftryingtogetoverbeingshy,Idecidedtodolittlestepsatatime,includingpracticingsmilingandsayinghitopeople.Anditworkedforme.“Butshynessisnotthekindofthingthatmostpeoplecangetoverovernight.Overcomingshynesstaketimeandneedspractice.Herearesometipsgivenbyscientists.Thinkofwhattotalkaboutbeforeyouleavehome.Preparethingstotalkaboutbeforeyou,reinasocialsituation.Forexample,ifyouknowyourclassmatesareinterestedinanupcomingevent,learnaboutitsoyoucanjoinintheconversations.Letpeopleknowyou,reshy.Ifyou,reshy,justshowit.Insteadoflettingpeopleguess,tellthemthetruth.Explainthatyouareshyandfeelnervousbutenjoytalkingtopeople.Makethingseasyfortheotherperson.Remember,you'renottheonlyshypersonaround.Dowhatyouthinkmighthelpothersfeelgood-forexample,sayhelloorsmile.Pickonesocialskilltopracticeatatime.Startsimply.Forexample,smileorbethefirstpersontosayhi.Chooseskillsyoufeelcomfortableenoughwithtopracticeforaday,aweek,amonth,orevenayear.( )1.WhichofthefollowingcanbeputintheblankinParagraph2?Whatisshyness?Whatmakespeopleshy?Canshynessbegoodforus?Canweovercomeshyness?( )2.TheexampleofGilbertinParagraph4isgivento.showhowpeopleovercomeshynessintroduceashygirlcalledGilberttelltherighttimetopracticesmilingexplainthestepsofovercomingshyness( )3.Whatdoestheunderlinedword“overnight“inParagraph5mostprobablymean?Correctly.Suddenly.Slowly.Finally.( )4.Whichofthefollowingistherightwaytoovercomeshyness?Don'tletothersknowthatyouareshy.Waitforotherstosayhellotoyoufirst.Chooseseveralskillstopracticeatatime.Getreadybeforeyoujoininasocialsituation.FPossibleEarthLikePlanetNextDoorScientistssaytheydiscoveredanearthlikeplanetoutsideoursolarsystem(太阳系).Itisaplanetthatcouldsupportlife.Thisplanetisjust4.2lightyearsawayfromus.Itissoclosethatspacescientistshaveconsidereditasanextdoorneighbor.Theysayitcouldbereachedbyanunmannedspaceshipbeforetheendofthecentury一intimeforpeoplealivetodaytoseeit.Aninternationalteamofscientistsfoundtheplanetmovingaroundthestarcalled“ProximaCentauri”.TheresultcameoutlastmonthfromthescientificmagazineNature.Scientistshavelongthoughtthataplanetwithwaterisimportantforlife.Andithastobeneithertoohotnortoocold.Thenewlydiscoveredplanetisalittlelargerthanearth.ScientistshavenameditProximaB.Itmovesarounditssun,ProximalCentralonceevery11days.Americanscientistshavebeenusinginstrumentsforyearstolookforearthlikeplanets.In2013,scientists,bestguesswasthatthereareaboutonebillion(1,000million)“earths”inspace.AlanBossisthechairmanofagroupforouterspaceresearch.HesaidthatProximaBnotonlyconfirms(确认)thediscoveryofaplanet,butalsoincreasesthenumberofotherpossible“earths”greatly.Bosssaiditispossible，evenlikely，thatmoststarshaveatleastoneearthlikeplanet，whichheconsiderssurprising.Sofromtheearlynumberofabillion，thisnewresearchsuggeststheremaybeasmanypossibleearthlikeplanetsastherearestarsintheGalaxy住艮河系).Thatis，anywherefrom250billionto500billion“earths”.Thismakesthepossibilityoflivingthingsincreasinglylikely.Bosssaidhebelieveshumanbeingswillbeabletoshowthatthereislifeinplacesbesidesearthinhislitfime.“Iam65，"hesaid，“butIexpecttostillbealivewhenithappens.”( )1.WhenwillitbepossibleforanunmannedspaceshiptoreachProximalB?In about eightyyears.In about 4.2years.In about elevenday.In about onebillion years.( )2.Inthefourthparagraph，thewriterthinksthatisnecessaryforlife.A.waterB.lightC.airD.wind( )3.Whatdoestheunderlinedword“This”standforinthelastparagraph?Scientistshavediscoveredanearthlikeplanetlastmonth.Therearefarmoreearthlikeplanetsthanpeoplethought.ProximalBisnotfarfromearthandisjustlikeourneighbor.TheGalaxywillbetheonlyplaceforlivingthingstolivein.( )4.WhatdoesAlanBossmeanbysaying“butIexpecttostillbealivewhenithappens”?Hishealthisingoodstateandhe,ssurehewilllivealonglife.Scienceisdevelopingmuchfasterthaneverinrecentyears.Scientistsmaysoonfindfactthatthere,slifeonotherplanets.Americaisfaraheadofothercountriesinspaceresearch.GBeautysleepisarealthing,researcheshaveshownthatpeoplewhohaveenoughsleeplookmoreattractive(有魅力的)toothers.Afewbadnightsisenoughtomakeapersonlook"especially"moreugly,theirsleepexperimentsshow.Theresearchersasked25universitystudentstojoinintheirsleepexperiment.Theywereaskedtogetagoodnight,ssleepfortwonights.Aweeklater,theywereaskedtosleepforonlyfourhourseverynightfortwonightsinarow.Theresearcherstookmake-upfree素颜)photosofthevolunteersafterboththegoodandthebadsleep.Next,theyasked122strangerstohavealookatthephotosandjudgeM(»themonattractiveness,health,andsleepiness,aswellasaskingthem:"Howmuchwouldyouliketomakefriendswiththispersoninthepicture?"Thestrangersweregoodatjudgingifthepersontheywerelookingatwastired,and,iftheyweresleepy,theirattractivenessscorewaslow.Thestrangersalsosaidtheywouldn,twanttosocializewiththetiredstudents.Theresearcherssaythisisnaturalforpeople.Anunhealthy-lookingfacemakespeoplerunaway.Inotherwords,peopledon'twanttohangaroundwithpeoplewhomightbeill.Dr.Brewer,anexpertattheUniversityofLiverpoolsaid"Judgementofattractivenessisoftenunconscious(无意识的)，hutwealldoit,andweareabletojudgeonevensomethingsmalllikewhethersomeonelookstiredorunhealthy.Thisstudyisagoodreminderofhowimportantsleepistous."( )1.Whendidtheresearcherstakemake-upfreephotos?Aftertwonightsgoodsleep.Aftertwonightsbadsleep.Beforetheexperiment.Afterbothtwonightsgoodsleepandtwonights,hadsleep.( )2.Theresearchersaskedthestrangerstodothefollowingexcept.tellingwholookedhealthiertellingwhodidn,thavemanyfriendstellingwhomissedalotofsleeptellingwhowasattractive( )3.Whatkindoffriendsdidthestrangersliketomake?Thepeoplewhoweretired.Thepeoplewhoweresleepy.Thepeoplewhowereunhealthy.Thepeoplewhowereattractiveandenergetic.( )4.Whatdoestheunderlinedword"socialize"meaninChinese?A.合伙B.玩耍C.交往D.共事( )5.Accordingtothepassage,whichofthefollowingisthebesttitle?Beautysleep,MoreattractiveMoresleep,MoreFriendsLesssleep,FewerfriendsNoattractiveness,NofriendsHImaginehavingasimpleapp应用程序)thatworkslikethis:Whenyouneedhelpjustopentheapptouchthe“notOK”buttonandatextmessagewillbesenttofivepreselected(预先选定的people，alongwithalocation(位置)toshowwhereyouare.Themessagereads“Hey，I,mnotOK.Pleasecallme，textme，orcometofindme.”USteenagersHannahLucas,15andherbrotherCharlie,13havecreatedanappcallednotOK.Peoplejustneedtopay$1.99(12.5yuan)eachmonthtouseit.Hannahwasinspired(启发)tocreatetheappduringadarktimeinherlifelastyear.Shesufferedfromadiseasethatcausedhertopassoutatschool.Otherkidssometimesbulli欺d凌)heraboutthis.Shefeltsadandwantedtofindanappthatwouldallowhertogethelpwhenshewasn,tfeelingOK.SheaskedherbrotherCharlie,whosenicknameis“TechSupport”,tofindsuchanapp.Whentheycouldn,tfindone,theydecidedtocreateonethemselves.Theycameupwithsomedesignsfortheappfirst.Chariletookaprogrammingclasslastsummerandbuiltawebsitefortheapp.Hannahalsosharedherideainhersummerbusinessclass.Someappdevelopersshowedinterestanddecidedtohelpher.AtlasttheappcameoutintheUSandCanadaonJanuary31.Hannahishappythatherappishelpingothers.“ItmakeseverythingIwentthroughlastyearworthit，”shesaid.( )1.Whowillknowyou,reintroublewhenyoutouchthe“notOK”button?Fivepreselectedpeople.Fivefamilymembers.Fiveappdevelopers.Fiveclosefriends.( )2.Whatdotheunderlinedwords“textme”inParagraphOneprobablymean?Sendmeareport.Sendmeanemail.Sendmeamessage.Sendmeanexam.( )3.Themainpurposeofinventingtheappistoallowpeople .tobuildawebsitetotakeclassestoearnmoneytoaskforhelp( )4.Therightorderofthefollowingstatementsabouttheinventionoftheappis.Hannahsufferedfromadiseaselastyear.Charlietookaprogrammingclasslastsummer.TheappcameoutintheUSandCanadainJanuary.HannahandCharliefailedtofindsuchausefulapp.A.c，d，a，bB.c，d，b，aC.a，d，b，cD.a，d，c，b( )5.Thebestwordstodescribetheappare.simpleandhelpfulpleasantanddangerousexpensiveandcreativeinterestingandpreselectedIIsthereanimportantexamrightaroundthecomer?Youmightbestartingtofear,thinkingthatthere,snowayforyoutogetagoodgradebecauseofthelittletimelefttostudy.Thisissomethingallstudentsmayworryabout.Butyoushouldacceptthefactthatyouhavetotaketheexamnomatterhowmuchyouwanttoavoidit.Thankfully,thereareseveralwaystohelpyougetatleastapassinggrade.Youmayhaveatry.Getyourselftogether.Thismightsoundlikesillyadvice,butit,sactuallythemostimportant.Whenyoufear,youmaylosecontroloveryourthoughtsandactionsEvenifyoutrytostudy,perhapsyouwon'tgetanythinginyourhead.Enjoyenoughsleep.It,sunbelievablemanystudentshavelittlesleepeachnight.That'snotsomethingtobeproudof,especiallyifyou,resleepingsolittleandstillfailingtodoallthethingsSleepisn,tfortheweak,butforthewise.Yourbrainneedsenoughrest.Afteragoodnight,ssleep,you,llperformmuchbetterinthemorning.Don'tfear.Oncethetestpaperisinfrontofyoudon,tbeafraid.Takeadeepbreathandstarttheexamwithconfidence(信心).Justlikewhenyouwerereviewing,putawaytheproblemsyou'rehavingdifficultyinandcomebacktothemlater.Ifyouhavetimeleft,goovereverythingtomakesureyouhaven'tmadeanycarelessmistakes.( )1.Inthewritersopinion,wheneverthere,sanimportantexam,.studentsmightexperienceaperiodoffearstudentswillhavelittletimetoworrystudentsshouldtryeverythingpossibletoavoiditstudentshavetoaskteachersformorehelp( )2.Thewriterdescribes“getyourselftogether"assillyadvicebecause.itwon,tinfluenceyourthoughtsitisoneofthecommonsensesitisnotthemostimportantsuggestionitwon'thelpyougetanythinginyourhead( )3.Enoughsleepbeforeanimportantexamis.theprideoftheweaknotsomethingtobeproudofnotnecessaryforthewiseawaytoavoidfailinginexams( )4.Whenyoumeetwithdifficultproblemsintheexam,youcan.givethemupandtakeadeepbreaththinkhardandreviewthemonceagainputthemawayfirstandcomebacklaterjusttrustyourselfandlookthroughthepaper( )5.Accordingtothepassage,youmaygetatleastthepassinggradeif.youfearnothingyoufollowthewriter,sadvicetheproblemsarenotdifficultthepreparationtimelastslongerJTodayisDecember15,2030.InfluencedbythelaunchofthefirstmannedmissiontoMarsnextmonthyouwillmostlikelygetagiftcardforaspacetrip.Theinterestintrips,100kmabovethesurfaceoftheEarth,hasgrownsteadilysincesuchatripbegan.However,themarkethasgrownmuchlargerthisyearsincetheofficialannouncementoftheMarsmission.Morelowcostspace-lineshaveenteredthemarketandyoucannowfindflightsforsuchatripforaslowas$3,495.It,sveryreasonable.Spacetourism旅游业；观光业)isoneofthemarketsthathavedevelopedfastduringthelastdecadewiththeopeningoftheStarbrightHotelonthemoonaswellastheloworbitalhotelsthatstartedacceptingguests.However，accommodationinspaceisstillexpensivefortheaveragehousehold，sothesuborbital(亚轨道的)flightswiththirtyminuteweightlessnessduringthethreehourflightwillforsometimebethemostpopulartrip.However，thespace-linesmightinthefuturefacefiercecompetitionbetweenspaceelevators(；^升降舱)，liketheonethatisprojectedtostartconstructionwithintwoyears.Onceitisfullyfunctional，itwillstarttoshipcargotospace.Butitwillacceptpassengersassoonaspossibletogetbackthelargeinvestment.Eveniftheelevatorbecomessuccessfulitwilltakeseveralyearsbeforetherearemoreelevatorsintheworldtogetinthecompetitionforspacetrafficwiththespace-lines.Thosewhoarelookingforalittlebitofadventureandhaveextramoneytospendmaywanttoconsiderasuborbitalflightinspace.Whileasuborbitalflightmaynotbethespacemissionthatyouhavealwaysdreamedof，itwillgiveyoutherareopportunitytoseewhatourplanetlookslikeinahighaltitudeflightoutsideouratmosphere.Sobeforeyouenjoyatripbyelevatortospace，enjoyasuborbitalflightfirst.( )1.FromParagraph1，whatwillhappeninJanuary,2031?AgiftcardwillbetakentoMars.Marswillbeexploredforthefirsttime.ManwillgotoMarsforthefirsttime.Anaffordablespacetripwillcometrue.( )2.Theunderlined“average”canmostprobablybereplacedby“"inthispassage.A.commonB.highincomeC.lowcostD.lowincome( )3.Whatisthespaceelevator,spurposeinacceptingpassengersassoonaspossible?Toshipcargotospace.Togetinthecompetitionbetweenspace-lines.Tostarttheconstructionofmorespaceelevators.Togetbackthelargeinvestment.( )4.WhichofthefollowingisNOTTRUEaccordingtothepassage?Spacetourismhasdevelopedfastduringthelasttenyears.Asuborbitalfightmaybethespacemissionthatyouhavedreamedof.Thesuborbitalflightswillbethemostpopulartripforsometime.Eventhoughtheelevatorbecomessuccessfu，lwestillwaitforafewyearstoseemoreelevatorscomeout.( )5.Wecanknowfromthepassagethat.theloworbitalhotelshaveopenedsinceaspacetripbeganwithintwoyears，spaceelevatorswillbegintoshipcargoandpeopletospaceduringthesuborbitalfights,youwillexperience30minutesweightlessnessifyouwanttomeetyourcuriosity，youmaytryasuborbitalfightKThere,smuchtoseeundertheseabutyouneedtorememberthatlightbehavesdifferentlyinwaterthaninair.Theobjectsappearclosertoyouthantheyexactlyare.Youmightfindyourselfreachingoutoftotouchsomethingandcompletelymissingit.Objectsunderwaterwillappearlargerthantheywouldonthesurfajetoo.Becarefulnottotellanystoriesaboutthebigfishthatgotaway.Thatfishmightnotbesobigafterall!It,sjustbecausesometimesthingscanseemtobeasmuchasabout33percentbiggerinwater!What,smore,indeeperwater,colorsjustdon,tseemasbright.Infac,titlooksasifsomecolorsaremissing.Rememberthecolorofanobjectresultsfromthewavelengths(波长)oflightthatarereflected(反射)fromitssurface.Andlightistakeninasitmovesdownthroughthewater.Swimmerswearwetsuitstokeepwarmunderwater.Let,stakeabrightredyellow,andbluewetsuitasanexample.Thesecolorsarehardtomissonthesurfaceofwater.Watchcarefullythechangesincolorasyoudescendinthewater.Theredpartnowlooksalmostblackbecausetheredlightwavelengthsthelongestamongthesethreecolors,aremissing.Asyougodowndeepe,rthesamethingwillhappentotheyellowpartandintheendtothebluepart.Evenataplaceofabout6to9metersunderwater,youwilllookterriblelikeaghost鬼怪)！Andyouhavetowaitforyourreturntothesurfacetoenjoythebrightcolorsagain.( )1.Youmisstheobjectunderwaterwhenyouwanttotouchitbecause.youreyesightisquitepooryouarenotquickenoughitisnotascloseasitseemsitdisappearsveryquickly( )2.Theexampleofthewetsuitisusedtoexplainthechangeofofanobjectunderwater.A.thesizeB.thecolorC.thepositionD.theweight( )3.Theunderlinedword“descend”probablymeans“"inChineseinthispassage.A.上升B.酒污C.屏息D.下潜( )4.Whichofthefollowingistrue?Afourmeterlongfishlooksthreemeterslongunderwater.Thewavelengthsofredlightarelongerthanthoseofbluelight.Muchwaterwillbetakeninbytheswimmerdeepinthewave.Youwillseeaghostifyougoasdeepas6to9metersintothesea.( )5.Thebesttitleofthispassageis.TheStandardofColorUnderwaterTheDirectionofLightUnderwaterTheBrightnessofColorUnderwaterTheBehaviorofLightUnderwaterLArtificialintelligence人工智能)，orAIinshortisthescienceofgivingcomputersandmachinesabilitytothinkandworklikehumans.AIscientistsandengineershavemadealotofcooltechnologies.AIisrapidlycatchingupwiththehumanabilitytoreadfaces.Asaresujtfacialrecognition(识另U)isusedalotintheworld.Chinesepoliceusethistechnologytoidentifycriminals(罪犯).Oncetheycaughtacriminalwhenheattendedaconcert.ItalsocheckstheIDofridehailing(网约车driversandletspeoplepayforthingswithasmile.AIisalsousedinselfdrivingcars,whicharebelievedtobethefutureofdriving.Mostdriversmaywaveornodatpassersbytoletthemcrossthestreet,butselfdrivingcarsdon,thavethisability.Carmakersaretestingalightsignalsystemtohelpthem“speak”tohumanThesystemcanshowwhatselfdrivingcarswilldo.Forexample,ifadriverlesscarisyielding让路)，itwillflashtwowhitelightssidetoside.Arapidlyflashinglighttellspassersbythatthecarisabouttospeedup.ServiceRobotsalsoshowyouhowpowerfulAIis.Imaginethis—youcomebackfromschoolandyourrobothousekeeperiswaitingforyouatthedoor.Afterdinnerheteachesyoutoplaythepianojustlikearealmusicteacher.Sucht