内容简介
D.W.makesabetwithArthurthatshecanteachBabyKatehowtoreadinasingleafternoon.Theloserofthebethastochangetheirlittlesister’sstinkydiapers!D.W.devisesaclevertricktomakesureshewinsthebet.ButwillArthurfallforit—orcomeupwithatrickofhisownbeforethenextdiaperchangeisneeded?