单选题 B JamiewasborninasmallvillageinthenorthofEngland.Heisnineyearsold.Helikesplayingbasketballverymuch.Whenheisfree,healwaysplaysbasketballwithhisfriendsintheopenair.Sometimeshewalksintheforestandpickssomeflowersbyhimself. LastFriday,Jamiefinishedhishomeworkafterthesecondclassinthemorning.Hehurriedouttoplaybasketball.Theplaygroundwaswet.Aftersometimehisbasketballandhishandsgotdirty.Itwas9:45andranintotheclassroom.Duringtheclass,Mr.Black,theteacher,toldJamietowritesomenewwordsontheblackboard.Jamiestoodinfrontoftheblackboardandstartedtowrite.Mr.Blacksawhisrighthandwasdirty. "Oh,dear!"saidtheteacher."Yourrighthandisdirty.Iamsureit’sthedirtiestinourclass." "Youarewrong,Mr.Black,"saidJamie.Thenheshowedhislefthand,adding"Thisisevendirtier."

A、 he picked flowers in the morning
B、 he has no habits of washing hands
C、 he was not allowed to was his hands
D、 he played basketball on the wet playground