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第3练 阅读理解 七选五.阅读理解A(2018陕西西安地区八校联考)Babbage,borninLondonin1791,wasagreatmathematicalgenius.Hewasanaturalinventor.Whenhefinishedschool,hewenttostudymathematicsatCambridgeUniversity.Later,hegotajobteachingattheuniversity.Whileworkingthere,hedesignedhis“firstdifferenceengine”Thiswas,basically,ahandoperatedmechanicalcalculator.Hetooknineyearstobuildapartofthemachine.Thismachinecanmakecomplexmathematicalcalculations.Itsabasicmechanicalcomputer.Babbagedreamed,however,ofmorecomplicatedmachines.Infact,hedidntonlydream; hebegantodesignthem.Theresultwasaseriesof“analyticalengines”whichwereinfactpowerfulcomputers!Hisdesignscontainedprocessors,controlunits,amemoryandaninput/outputsystem.Thesearethefouressentialpartsofamodernmathematicalcomputer!Alas! His“seconddifferenceengine”couldntuseelectricitysincethishadntyetbecomeausablesourceofpower,soBabbagehadtomakedowithmechanicalsystems.Forthisreason,themachinewasbig,complicatedandexpensive.ThoughBabbageproducedcompleteplansforthemachine,hecouldntbuildit.Itwastooadvancedforitsage!Itwasnotuntilalmost160yearslaterthatBabbages“seconddifferenceengine”wasfinallymanufactured.ThefirstworkingversionofthismachinewasbuiltbytheScienceMuseuminLondon,fortheBabbagebicentenaryin1991.AsecondmachinewasthenbuiltforanAmericanhightechmillionaire,whoputitintheComputerHistoryMuseum,inCalifornia.Babbagesanalyticalengineswouldhaveused“programs”likethoseusedinthetextile(纺织) industrytomakecomplicatedpatterns,buttheywereneverbuilt.Thisbrilliantmathematicianreallywastoofaraheadofhistime!1WheredidBabbageplanhis“firstdifferenceengine”?AInLondon.BAthighschool.CAtCambridge.DInScienceMuseum.2The“seconddifferenceengine”wasbuilttoworkin1991.AforanAmericanmillionaireBinmemoryofBabbageCtotestitsabilitytouseelectricityDfortextileindustrytomakepatterns3Whatcanweinferfromthetext?ABabbagesenginesdidntrunonprograms.BTextilepatternsareproducedwithprograms.CBabbagecanbeseenasthefatherofcomputers.DBabbagesanalyticalengineswereneverbuilt.BWithgoldensunshineandagentlebreeze,autumnisthemostbeautifulseasonintheyear.Thisisagreattimetogooutsideandhavefun.Gotoavalleytoseeredmapletrees,goandpickfruitinanorchardorfindanopenfieldtoflyyourkitein.However,formanyhighschoolstudents,thesegreatactivitiesmaybejustadream.Withplentyofworktodo,theyspendalltheirhoursindoors,strugglingforahighmarkintheirexams.Ofcourse,studyisoneofthemostimportantthingsforteenagers.Butlifeisdefinitelymuchmorethanthat.Sometimeswespendsomuchtimestudyingthatweforgethowtomakelifewonderful.Indoingso,welosetherealpurposeoflifetobeavaluableandhappyperson.Toenjoyjusthowgreatitistobealive,wehavetoputdownourbooksandpensandlookaroundus.Students,takesomeexercisetoimproveyourhealth,talkwithyourparentsandfriendsforunderstandingandwalkaroundoutsidetorefreshyourbodyandmind.Goingoutandenjoyingthebeautifulcountrysideoftenhelpsourcreativityinourwork.Chinesecraftsman,LuBan,createdasawtohelpwoodworkers.Butifhehadntwalkedoutside,hewouldnothavebeeninspiredbyakindoftoothedgrass.WecouldalsosupposethatifNewtonhadntrestedunderthatappletree,thenhewouldnthavebeenhitbyanapple,andhisclassictheorieswouldnothavecomeout.Goingoutisnotonlyabreakfromhardwork,butachancetoaddtolifeexperience.Socomeon,giveyourbrainagoodrest.Stepoutofthebooksandgetyourbagreadyforanautumnouting.Wearesureyouwillgetmuchmorethanknowledgefromtheexcitingjourney.4Inwhichparagraphdoesthewritermakeasummaryabouthisopinion?AParagraph1.BParagraph2.CParagraph5.DParagraph4.5Whyisgoingoutadreamformanyhighschoolstudents?ATheyareunhappytodoso.BTheirparentsdontallowthemtodoso.CTheythinkstudyisthemostimportantthingforthem.DTheyhavetoomuchworktodoforgettinghighmarksintheexams.6Thepassageisdevelopedmainlyby.AmakingpredictionsBreasoningandgivingexamplesCdescribingthebeautifulsceneryinautumnDpointingoutthepresentsituationofhighschoolstudents7Whatmessagecanyougetfromthepassage?ANatureispower.BAllworkandnoplaymakesJackadullboy.CTheauthorisnthappywithoureducationatall.DGoingoutcanmakehighschoolstudentsgetmore.CWhileJenniferwasathometakinganonlineexamforherbusinesslawclass,amonitorafewhundredmilesawaywaswatchinghereverymove.UsingawebcameraequippedinJennifersLosAngelesapartment,themonitorinPhoenixtrackedhowfrequentlyhereyesmovedfromthecomputerscreenandlistenedforthesecretsoundsofapossiblehelperintheroom.HerInternetaccesswaslockedremotelytopreventInternetsearches,andhertypingstylewasanalyzedtomakesureshewaswhoshesaidshewas:Didsheenterherstudentnumberatthesamespeedasshehadinthepast?Orwassheslowingdown?Inthebattleagainstcheating,thisisthecuttingedgeandakeytoencouragehonestyintheboomingfieldofonlineeducation.Thetechnologygivestrusttotheentiresystem,totheinstitutionandtoonlineeducationingeneral.Onlywithsolidmeasuresagainstcheating,expertssay,canInternetuniversitiesshowthattheirexamsanddiplomasarevalidthatstudentshaventjustsearchedtheInternettogettherightanswers.Althoughonlin
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