语音知识

1．front

       A．hospital               B．comfort               C．fond                  D．common

2．physics

       A．safety                 B．sugar                  C．thousand           D．usual

3．queen

       A．sheet                   B．feather                C．headline             D．coffee

4．swallow

       A．tower                  B．window               C．towel                D．flower

5．peach

       A．backache             B．stomach              C．scholarship        D．charge