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Notallmathskillsarelearnedintheclassroom.Someofthemcome...
问题详情:Notallmathskillsarelearnedintheclassroom.Someofthemcomenaturally.Considerthesplit-secondcalculations youmakewhenyouestimate(估计)thenumberofemptyseatsontheschoolbusorthenumberofcookiesinacookieja...
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