从下列各题的四个选项中选出一个划线部分读音不同的选项.
1.A.biteB.finallyC.nightD.fill
2.A.saidB.rainCafraidD.train
3.A.borrowB.bowlC.crowdedD.toast
4.A.throwB.thinkC.withD.thick
5.A.chessB.headacheC.watchD.check