单选题ClassificationofvowelsismadeupofthefollowingEXCEPT()。Athe openness of the mouthBthe position of the tongueCthe shape of the tipDthe width of the vowels
单选题
ClassificationofvowelsismadeupofthefollowingEXCEPT()。
A
the openness of the mouth
B
the position of the tongue
C
the shape of the tip
D
the width of the vowels
参考解析
解析：
英语元音有四种分类：the position of the tongue in the mouth；the openness of the mouth；the shape of the lip；the length of the vowels。