英语阅读题T/F30分Oncetherewasnozero(零).Towritethenumbersixty-three,peoplewrote63.Towritesixhundredandthree,peoplewrote63.Thespacewastheretomean“notany”tens.Sometimespeopledidnotrememberthespace.Itwashar
英语阅读题T/F30分
Oncetherewasnozero(零).Towritethenumbersixty-three,peoplewrote63.Towritesixhundredandthree,peoplewrote63.Thespacewastheretomean“notany”tens.Sometimespeopledidnotrememberthespace.Itwashardtoseeandtoread.
Laterpeopleusedadot(点)toholdthespace.Sixhundredandthreelookedlikethis6·3.Butthedotwashardtosee.Sopeopleputacirclearounditlikethis6⊙3.Thenpeoplecouldseethedot.Theyrememberedthespace.
Atlast,onlythecirclearoundthedotwasused.Itwaslikeazero.Thisisonestoryofhowthezerocametobeused.
Nowzerohasmanyimportantuses.Zerotellshowmany.Canyoutellsomeotherwayszeroisused?
()ATfirst,zerowasnotusedbypeople
()thespacebetween6and3waseasytoseeandtoread
()later,whenpeoplewroteeighteighthundredandnine,theywouldputacirclewithadotinitbetween8and9
()zerocamefromthecieclearoundthedot
()zeroisn'tusefulinourlife
()thespacebetween6and3means"notany"tens
()peopleputacieclearoundthedotsothattheycouldseeit