完形填空(73)Ballpointpenshavemadelifeeasierformillionsofpeople
Atonetime1didnotliketheirstudentsto2withpen
Perhapsitwasbecausepenscanleak(漏)anditis3tospill(溢出)theink
Anditishardtowriteonthinorcheappaperwiththem
LadislaoBiro4foranewspaperinBudapest
Hespentallday5hisdesk
Dayinanddayout,hecorrected6ofthin,cheappaperwithapenandink
Heoftenhadtostopto7hispenanditdidnotwrite8onthethinpaper
HeandhisbrotherGeorge9someexperiments
Theywantedapenthatdidnotleak,withinkthatdidnotspill
Whynot10alittleballattheend
TwoEnglishmen,HenryMartinandFrederickMiles,likethe11
Itwasthe12oftheSecondWorldWar
TheAirForce13anon-leak,non-spillpenforthementowritewithin14
MartinandMilesmadeand15manythousandsofBiro“writing-sticks”totheAirForce
factoriesB
schoolsC
shopsD
restaurants2
writeC