Vowels are sounds produced by constricting or obstructing the vocal tract at some place to divert, impede or completely shut off the flow of the air in the oral cavity.
A.正确 B.错误正确答案B
Vowels are sounds produced by constricting or obstructing the vocal tract at some place to divert, impede or completely shut off the flow of the air in the oral cavity.
A.正确 B.错误正确答案B
