判断下列单词画线部分有几种读音。(20分)A.一种读音 B.两种读音 C.三种读音( )(1)A.west B.nest C.rest( )(2)A.ear B.pear C.dear( )(3)A.back B.luck C.clock( )(4)A.for B.doctor C.visitor( )(5)A.your B.colour C.course
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