Atnoontherushhourpassed.Therewerefewguests（顾客)inthesnackbar.Itwasnotcrowded.Whenthebossofthesnackbarwasreadytohavearesttoreadanewspaperincameanoldladyandalittleboy.
“Howmuchmoneyisabowlofbeefsoup?”thegrandmasatdowncountedthemoneyinherpurseandorderedabowlofbeefsoup.Thegrandmapushedthebowltothelittleboywhoswallowed（吞咽)hissaliva（口水)lookingathisgrandmaandsaying“Grandmadidyoureallyhavelunch?”“Ofcourse.”Hisgrandmachewed（咀嚼)apieceofradish(萝卜泡菜)slowly.Veryquicklythelittleboyateupthemeal.
Seeingthisthebosswentovertothemandsaid“Oldladycongratulationsyouareluckytohavethefree（免费的)foodbecauseyouareour100thguest.”
Afterwardsoveramonthormoreonedaythesmallboysquatted（蹲)acrossthesnackbarwhereheseemedtobecountingsomethingThebossfeltshocked（震惊的）whenhehappenedtolookoutofthewindow.
Whenthesmallboysawaguestwalkintothesnackbarhewouldputasmallstoneintothecirclehedrewbutthelunchtimehadalmostpassedtherewereonlyabout50smallstonesinthecircle.
Thebosswasquiteworriedandcalledupallhisoldguests.Theguestsstartedcomingoneafteranother.
“818283…”thesmallboycountedfasterandfaster.Atlastafterheputthe99thstoneintothecirclehehurriedtopullhisgrandma’shandandwentintothesnackbar.
“Grandmathistimeit’sonme.”thelittleboysaidproudly.Thegrandmawhowasthereal100thguestwasserved（被供应)abowlofsoupbyhergrandson.Ashisgrandmaasbeforethelittleboychewedapieceofradishinhismouth.
6.Grandmaorderedonlyonebowlofbeefsoupbecause______________.