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1、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，ahandoperatedme
2、chanicalcalculator.Hetooknineyearstobuildapartofthemachine.Thismachinecanmakecomplexmathematicalcalculations.Itsabasicmechanicalcomputer.Babbagedreamed，however，ofmorecomplicatedmachines.Infact，hedidntonlydream; hebegantodesignthem.Theresultwasaseriesof“analyticalengines”whichwereinfactpowerfulcomput
3、ers!Hisdesignscontainedprocessors，controlunits，amemoryandaninput/outputsystem.Thesearethefouressentialpartsofamodernmathematicalcomputer!Alas! His“seconddifferenceengine”couldntuseelectricitysincethishadntyetbecomeausablesourceofpower，soBabbagehadtomakedowithmechanicalsystems.Forthisreason，themachin
4、ewasbig，complicatedandexpensive.ThoughBabbageproducedcompleteplansforthemachine，hecouldntbuildit.Itwastooadvancedforitsage!Itwasnotuntilalmost160yearslaterthatBabbages“seconddifferenceengine”wasfinallymanufactured.ThefirstworkingversionofthismachinewasbuiltbytheScienceMuseuminLondon，fortheBabbagebic
5、entenaryin1991.AsecondmachinewasthenbuiltforanAmericanhightechmillionaire，whoputitintheComputerHistoryMuseum，inCalifornia.Babbagesanalyticalengineswouldhaveused“programs”likethoseusedinthetextile(纺织) industrytomakecomplicatedpatterns，buttheywereneverbuilt.Thisbrilliantmathematicianreallywastoofarahe
6、adofhistime!1WheredidBabbageplanhis“firstdifferenceengine”？AInLondon.BAthighschool.CAtCambridge.DInScienceMuseum.2Whatdoweknowabouthis“seconddifferenceengine”？AIttookhimnineyearstobuildit.BItwasfaraheadofitstime.CItsdesigncameoutinhisdreams.DItspowersourcewaselectricity.3The“seconddifferenceengine”w
7、asbuilttoworkin1991.AforanAmericanmillionaireBinmemoryofBabbageCtotestitsabilitytouseelectricityDfortextileindustrytomakepatterns4Whatcanweinferfromthetext?ABabbagesenginesdidntrunonprograms.BTextilepatternsareproducedwithprograms.CBabbagecanbeseenasthefatherofcomputers.DBabbagesanalyticalengineswer
8、eneverbuilt.BWithgoldensunshineandagentlebreeze，autumnisthemostbeautifulseasonintheyear.Thisisagreattimetogooutsideandhavefun.Gotoavalleytoseeredmapletrees，goandpickfruitinanorchardorfindanopenfieldtoflyyourkitein.However，formanyhighschoolstudents，thesegreatactivitiesmaybejustadream.Withplentyofwork
9、todo，theyspendalltheirhoursindoors，strugglingforahighmarkintheirexams.Ofcourse，studyisoneofthemostimportantthingsforteenagers.Butlifeisdefinitelymuchmorethanthat.Sometimeswespendsomuchtimestudyingthatweforgethowtomakelifewonderful.Indoingso，welosetherealpurposeoflifetobeavaluableandhappyperson.Toenj
10、oyjusthowgreatitistobealive，wehavetoputdownourbooksandpensandlookaroundus.Students，takesomeexercisetoimproveyourhealth，talkwithyourparentsandfriendsforunderstandingandwalkaroundoutsidetorefreshyourbodyandmind.Goingoutandenjoyingthebeautifulcountrysideoftenhelpsourcreativityinourwork.Chinesecraftsman
11、，LuBan，createdasawtohelpwoodworkers.Butifhehadntwalkedoutside，hewouldnothavebeeninspiredbyakindoftoothedgrass.WecouldalsosupposethatifNewtonhadntrestedunderthatappletree，thenhewouldnthavebeenhitbyanapple，andhisclassictheorieswouldnothavecomeout.Goingoutisnotonlyabreakfromhardwork，butachancetoaddtoli
12、feexperience.Socomeon，giveyourbrainagoodrest.Stepoutofthebooksandgetyourbagreadyforanautumnouting.Wearesureyouwillgetmuchmorethanknowledgefromtheexcitingjourney.5Inwhichparagraphdoesthewritermakeasummaryabouthisopinion?AParagraph1.BParagraph2.CParagraph5.DParagraph4.6Whyisgoingoutadreamformanyhighsc
13、hoolstudents?ATheyareunhappytodoso.BTheirparentsdontallowthemtodoso.CTheythinkstudyisthemostimportantthingforthem.DTheyhavetoomuchworktodoforgettinghighmarksintheexams.7Thepassageisdevelopedmainlyby.AmakingpredictionsBreasoningandgivingexamplesCdescribingthebeautifulsceneryinautumnDpointingoutthepre
14、sentsituationofhighschoolstudents8Whatmessagecanyougetfromthepassage?ANatureispower.BAllworkandnoplaymakesJackadullboy.CTheauthorisnthappywithoureducationatall.DGoingoutcanmakehighschoolstudentsgetmore.CWhileJenniferwasathometakinganonlineexamforherbusinesslawclass，amonitorafewhundredmilesawaywaswat
15、chinghereverymove.UsingawebcameraequippedinJennifersLosAngelesapartment，themonitorinPhoenixtrackedhowfrequentlyhereyesmovedfromthecomputerscreenandlistenedforthesecretsoundsofapossiblehelperintheroom.HerInternetaccesswaslockedremotelytopreventInternetsearches，andhertypingstylewasanalyzedtomakesuresh
16、ewaswhoshesaidshewas：Didsheenterherstudentnumberatthesamespeedasshehadinthepast？Orwassheslowingdown?Inthebattleagainstcheating，thisisthecuttingedgeandakeytoencouragehonestyintheboomingfieldofonlineeducation.Thetechnologygivestrusttotheentiresystem，totheinstitutionandtoonlineeducationingeneral.Onlywithsolidmeasuresa
