2021年英语四级听力美文第85篇:The Story of Sissa思维导图

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2021年英语四级听力美文第85篇:The Story of Sissa思维导图

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2021年英语四级听力美文第85篇:TheStoryofSissa

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大学教育四六级复习辅导四级四级辅导听力

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TherewasonceavictimofoverwhelmingnumberscalledKingShirhamofIndia,who,accordingtotheoldlegend,wantedtorewardhisgrandPrimeMinisterSissaforinventingandpresentingtohimthegameofchess.

Thedesireofthecleverministerseemedverymodest.

“Majesty,”hesaidkneelinginfrontoftheking,“givemeagrainofwheattoputonthefirstsquareofthischessboard,andtwograinstoputonthesecondsquare,andfourgrainstoputonthethird.

Andso,ohKing,doublingthenumberforeachsucceedingsquare,givemeenoughgrainstocoverall64squareoftheboard.”

“Youdonotaskformuch,ohmyfaithfulservant,”exclaimedtheking,secretlyenjoyingthethoughtthathisliberalproposalofagifttotheinventorwouldnotcosthimmuchofhistreasure.

“Yourwishwillcertainlybegranted.”

Andheorderedabagofwheattobebroughttothethrone.

Butwhenthecountingbegan,itwasfoundthatthebagwasemptiedbeforethetwentiethsquarewasaccountedfor.

Morebagsofwheatwerebroughtbeforethekingbutthenumberofgrainsneededforeachsucceedingsquare

increasedsorapidlythatitsoonbecameclearthatwithallthecropofIndianthekingcouldnotfulfillhispromisetoSissa.

Todosowouldhaverequired18，446，744，073，709，551，615grains!

Assumingthatabushelofwheatcontainsabout5milliongrains,onewouldneedsome4×1012bushelstosatisfythedemandofSissa.

Sincetheworldproductionofwheataveragesabout2×109bushelsayear,theamountrequestedbytheministerwasthatoftheworld'swheatproductionfortheperiodofsometwothousandyears!

ThusKingShirhamfoundhimselfdeepindebttohisministerandhadeithertofacetheincessantflowofthelatter'sdemands,ortocuthisheadoff.

Wesuspectthathechosethelatteralternative.