minus的精选知识

• How much is four minus four?

• Oneday,theteacherinquiredofPeter:"Howmuchisfourminusfour?"Peterwastongue-tied.Theteachergotangryandsaid:"Whatafool!Yousee,ifIputfourcoinsinyourpocket,butthereisaholeinyourpocketandallofthemleakout,nowwhatisleftinyourpocket?""Thehole,"repliedPeter。一...
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