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  ForalongtimeChesterCarlsoncarriedaroundhislittleblackbox----theinventionoverwhichhehadworkedandstruggledforyears.Heshowedittothedirectorsoftwenty-onelargeAmericancorporations,suchas“GeneralElectric,InternationalBu

  ForalongtimeChesterCarlsoncarriedaroundhislittleblackbox----theinventionoverwhichhehadworkedandstruggledforyears.Heshowedittothedirectorsoftwenty-onelargeAmericancorporations,suchas“GeneralElectric,InternationalBusinessMachines(IBM),Lockheed,andRCA.”

  Nobodywantedit.

  Nobodywantedtoinvestapennyinit.

  ItmustbepainfulforthosedirectorstothinkofChesterCarlsonnow.Forthelittleblackboxistheheartofthemulti-billion-dollarXeroxCorporation.Carlsonistheinventorof“xerography”(fromtwoGreekwordsmeaning“drywriting”),thedry-printingprocessusedinthousandsandthousandsofoffices,businesses,industries,universities,shops,andgovernmentagenciesaroundtheworld.

  ThankstoCarlson,itnowtakesminutestocopyadocumentwhich,twentyyearsago,wouldhavekeptasecretarybusyforawholeday.AndforafewpenniesanyonecanhaveacopyofanythingfromcookingrecipestoGreekpoetry.Morethanthirtybillionsuchcopiesaremadeeachyear.

  WhenChesterCarlsonwenttoworkinapatentofficein1930,thecopyingmethodswereslow,dirty,andexpensive.Inhisjob,Carlsonhadtomakemanycopiesofpatentsforinventions.Onenight,afterworkinglateandpainfully,hedecidedthatsomebodyhadbetterfindaneasierwaytodoit.Hewenttoworkinthekitchenofhisapartmentwithmeasuringcupsandcookingpots.By1937,havingdevelopedasimpleformofxerography,heappliedforhisfirstpatentontheprocess.

  1)Chestercarlsonwas_

  A)adirectorofanAmericancorporation

  B)aninventorofacopyingmaching

  C)acompanysalesman

  D)anofficeclerkinacompany

  2)atfirstnobodywantedthislittleblackboxbecause_

  a)itwasconsideredtobeofnovalue

  b)verylittlewasknownaboutit

  c)peoplethoughtitwasnotaworth-whileinvestment

  d)alloftheabove

  3)howlongdidittakeCarlsontocompletehisresearchintothisdry-printingprocess?

  a)alifetime

  b)sevenyears

  c)twentyyears

  d)notmentionedinthepassage

1回答
2020-04-1419:22
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郭士林

  bdb

2020-04-14 19:24:40
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