Thereareoveronemillionsuperstitions(迷信)andmostpeoplebelieveatleastoneortwoofthem.Manypeoplearesuperstitiousaboutnumbers.Theythinkthatthereareluckynumbersandunluckynumbers.Thenumber13isoftenco

　　Thereareoveronemillionsuperstitions(迷信)andmostpeoplebelieveatleastoneortwoof　them.

　　Manypeoplearesuperstitiousaboutnumbers.Theythinkthatthereareluckynumbersandunluckynumbers.

　　Thenumber13isoftenconsideredunlucky.Insomepartsoftheworldbuildingshaveno13thfloorandstreetshavenohouseswiththenumber13.InJapan"4"isconsideredunluckybecauseinJapanesetheword"four"ispronouncedthesameastheword"death".

　　Japanesenevergivegiftsoffourknivesfournapkinsorfourofanything.

　　Whataretheluckynumbers?Sevenisaluckynumberinmanyplacesand"8"isconsideredaluckynumberinJapanandChina.InChinabusinessesoftenopenonAugust8andmanycouplesregistertogetmarriedateightpasteightonAugust8.

　　Superstitionsaboutnumbersaresowidespreadthatsomepeople--callednumerologist--makealivingbygivingadviceaboutnumbers.

　　In1937whentheToyodafamilyofJapanwantedtoformacarcompanytheyaskedanumerologistif"Toyoda"wouldbeagoodnameforthecompany.Thenumerologistsaiditwouldnotbe.Heexplainedthat"Toyota"wouldbeabetternameforthecompany.Thefamilytookhisadvice.Asaresultmillionsofpeopledrive"Toyota"andnot"Toyoda".

　　Therearemanyotherkindsofsuperstitions.Therearesuperstitionsabouteatingsleepingsneezinganditching(抓痒).Therearesuperstitionsaboutanimalsandholidaysandhorseshoes.

　　Thereareevensuperstitionsaboutsuperstitions.Thosesuperstitionswilltellpeoplehowtoreversebadluck.

　　WhentheJapanesebumpheadstheyimmediatelybumpheadsagain.AccordingtoaJapanesesuperstitionthefirst-bumpmeanstheirparentswilldiebutthesecondbump"erases"thefirstbump

　　Toreversebadluckingeneralpeopleturnaroundthreetimesturntheirpocketsinsideoutorputtheirhatsonbackwards.

　　IntheUnitedStatesbaseballplayerssometimesweartheircapsbackwardswhentheirteamislosing.Itlookssillybutthebaseballplayersdonotmindifithelpsthemwinthegame.

　　1.Itcanbeinferredthatsuperstitionsaboutnumbersare .