题目内容:
Classification of vowels is made up of the following EXCEPT( )。
A.the openness of the mouth
B.the position of the tongue
C.the shape of the tip
D.the width of the vowels
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答案解析:
Classification of vowels is made up of the following EXCEPT( )。
A.the openness of the mouth
B.the position of the tongue
C.the shape of the tip
D.the width of the vowels