阅读理解+七选五Ⅰ.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.It’sabasicmechanicalcomputer.Babbagedreamed，however，ofmorecomplicatedmachines.Infact，hedidn’tonlydream;hebegantodesignthem.Theresultwasaseriesof“analyticalengines”whichwereinfactpowerfulcomputers!Hisdesignscontainedprocessors，controlunits，amemoryandaninput/outputsystem.Thesearethefouressentialpartsofamodernmathematicalcomputer!Alas!His“seconddifferenceengine”couldn’tuseelectricitysincethishadn’tyetbecomeausablesourceofpower，soBabbagehadtomakedowithmechanicalsystems.Forthisreason，themachinewasbig，complicatedandexpensive.ThoughBabbageproducedcompleteplansforthemachine，hecouldn’tbuildit.Itwastooadvancedforitsage!Itwasnotuntilalmost160yearslaterthatBabbage’s“seconddifferenceengine”wasfinallymanufactured.ThefirstworkingversionofthismachinewasbuiltbytheScienceMuseuminLondon，fortheBabbagebicentenaryin1991.AsecondmachinewasthenbuiltforanAmericanhightechmillionaire，whoputitintheComputerHistoryMuseum，inCalifornia.Babbage’sanalyticalengineswouldhaveused“programs”likethoseusedinthetextile(纺织)industrytomakecomplicatedpatterns，buttheywereneverbuilt.Thisbrilliantmathematicianreallywastoofaraheadofhistime!1．WheredidBabbageplanhis“firstdifferenceengine”？A．InLondon.B．Athighschool.C．AtCambridge.D．InScienceMuseum.2．Whatdoweknowabouthis“seconddifferenceengine”？A．Ittookhimnineyearstobuildit.B．Itwasfaraheadofitstime.C．Itsdesigncameoutinhisdreams.D．Itspowersourcewaselectricity.3．The“seconddifferenceengine”wasbuilttoworkin1991.A．foranAmericanmillionaireB．inmemoryofBabbageC．totestitsabilitytouseelectricityD．fortextileindustrytomakepatterns4．Whatcanweinferfromthetext?A．Babbage’senginesdidn’trunonprograms.B．Textilepatternsareproducedwithprograms.C．Babbagecanbeseenasthefatherofcomputers.D．Babbage’sanalyticalengineswereneverbuilt.BWithgoldensunshineandagentlebreeze，autumnisthemostbeautifulseasonintheyear.Thisisagreattimetogooutsideandhavefun.Gotoavalleytoseeredmapletrees，goandpickfruitinanorchardorfindanopenfieldtoflyyourkitein.However，formanyhighschoolstudents，thesegreatactivitiesmaybejustadream.Withplentyofworktodo，theyspendalltheirhoursindoors，strugglingforahighmarkintheirexams.Ofcourse，studyisoneofthemostimportantthingsforteenagers.Butlifeisdefinitelymuchmorethanthat.Sometimeswespendsomuchtimestudyingthatweforgethowtomakelifewonderful.Indoingso，welosetherealpurposeoflife—tobeavaluableandhappyperson.Toenjoyjusthowgreatitistobealive，wehavetoputdownourbooksandpensandlookaroundus.Students，takesomeexercisetoimproveyourhealth，talkwithyourparentsandfriendsforunderstandingandwalkaroundoutsidetorefreshyourbodyandmind.Goingoutandenjoyingthebeautifulcountrysideoftenhelpsourcreativityinourwork.Chinesecraftsman，LuBan，createdasawtohelpwoodworkers.Butifhehadn’twalkedoutside，hewouldnothavebeeninspiredbyakindoftoothedgrass.WecouldalsosupposethatifNewtonhadn’trestedunderthatappletree，thenhewouldn’t...
