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.2Whatdoweknowabouthis“seconddifferenceengine”？AIttookhimnineyearstobuildit.BItwasfaraheadofitstime.CItsdesigncameoutinhisdreams.DItspowersourcewaselectricity.3The“seconddifferenceengine”wasbuilttoworkin1991.AforanAmericanmillionaireBinmemoryofBabbageCtotestitsabilitytouseelectricityDfortextileindustrytomakepatterns4Whatcanweinferfromthetext?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.5Inwhichparagraphdoesthewritermakeasummaryabouthisopinion?AParagraph1.BParagraph2.CParagraph5.DParagraph4.6Whyisgoingoutadreamformanyhighschoolstudents?ATheyareunhappytodoso.BTheirparentsdontallowthemtodoso.CTheythinkstudyisthemostimportantthingforthem.DTheyhavetoomuchworktodoforgettinghighmarksintheexams.7Thepassageisdevelopedmainlyby.AmakingpredictionsBreasoningandgivingexamplesCdescribingthebeautifulsceneryinautumnDpointingoutthepresentsituationofhighschoolstudents8Whatmessagecanyougetfromthepassage?ANatureispower.BAllworkandnoplaymakesJackadullboy.CTheauthorisnthappywithoureducationatall.DGoingoutcanmakehighschoolstudentsgetmore.CWhileJenniferwasathometakinganonlineexamforherbusinesslawclass，amonitorafewhundredmilesawaywaswatchinghereverymove.UsingawebcameraequippedinJennifersLosAngelesapartment，themonitorinPhoenixtrackedhowfrequentlyhereyesmovedfromthecomputerscreenandlistenedforthesecretsoundsofapossiblehelperintheroom.HerInternetaccesswaslockedremotelytopreventInternetsearches，andhertypingstylewasanalyzedtomakesureshewaswhoshesaidshewas：Didsheenterherstudentnumberatthesamespeedasshehadinthepast？Orwassheslowingdown?Inthebattleagainstcheating，thisisthecuttingedgeandakeytoencouragehonestyintheboomingfieldofonlineeducation.Thetechnologygivestrusttotheentiresystem，totheinstitutionandtoonlineeducationingeneral.Onlywithsolidmeasuresa