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1、B1Oncetherewassomethingwrongwithamachineinafactory.TheworkerscoulddonothingbutturntoaGermanengineerforhelp,whodrewalineonitandthensaid,“Takeoffthepartwherethelineisandchangeitforanewone.”Themachine,withanewlineon,beganrunningwellagain.Theengineerthenaskedfor$30,
2、000forwhathehaddone.Thefollowingwerewhathewroteonabill,“Thenewpartonlycostsonedollar,andknowingwheretheproblemwiththemachineiscosts$29,999.”Onedollarforchanginganewpartsoundsreasonable（有道理的）butthe$29,999isexactlythevalue（价值）ofwisdom（智慧）andknowledge.1.Thefactoryt
3、urnedtotheGermanengineerbecause_______.A.hehadnothingtodointhefactoryB.therewerenootherpeopleinthefactoryC.theworkerscouldnotrepairthemachineD.theworkersaskedfortoomuchmoneyforrepairingthemachine2.Theproblemofthemachine_______.A.wascausedbytheGermanengineerB.was
4、foundandsolvedbytheworkersC.tooktheengineeralongtimetofindD.wasjustaline3.Accordingtotheengineer,thefindingoftheproblemcost_______.A.onlyonedollarB.$29,999C.nothingD.lessthanthenowpart4.Thewriterwantstotellusthat________.A.theengineeraskedfortoomuchmoneyB.thewor
5、kersshouldpaythemoneyC.theknowledgeisworthmoneyD.thenewpartcouldcostmore5.Thebesttitleforthepassageshouldbe_______.A.TheValueofKnowledgeB.HelplessWorkersC.TheExpensiveMachineD.TheLuckyFactoryB2Long,longagotherewasnozero.Towritethenumbersixty-threepeoplewrote63.T
6、owritesixhundredandthree,peoplewrote63.Thespacebetweensixandthreewastheretomean."notany"tens.Sometimespeopledidnotrememberthespace.Itwashardtoseeandread.Laterpeopleusedadottoholdthespace.Sixhundredandthreelookedlikethis96.3.Butthedotwashardtosee.Sopeopleputacirc
7、learounditlikethis6⊙3.Thenpeoplecouldseethedot.Theyrememberedthespace.atlast,onlythecirclearoundthedotwasused.Itwaslikeazero.Thisisonestoryofhowthezerocametobeused.Nowzerohasmanyimportantuses.Zerotellshowmany.Canyoutellsomeotherwaysofusingzero?1.Long,longagopeop
8、ledidn’tknowhowto____.A.writeB.writezeroC.writenumbersD.sixty-three2.Long,longagoiftheywrotetwohundred-eight,peoplewrote_____.A.218B.28C.228D.2083.Later______wasusedt
