单击此处编辑母版标题样式单击此处编辑母版文本样式第二级第三级第四级第五级Sound DifferentiationMain Vowels Differentiationi vs i:1.beadbid 2chipcheap 3.seatsit 4.iteat 5.leastlist 6.sheepship 7.fitfeet 8.steelstill 9.leavelive 10.wheelwil