语音知识。
找出画线部分读音与其他三个不同的单词。
( ) ⑴A.book B. look C. food D. good
( ) ⑵A.thin B. that C. father D.brother
( )⑶A.cake B. clock C. face D.cat
( )⑷A.ear B. pear C. hear D.tear
( )⑸A.he B. pen C. egg D.desk