（）can be differentiated by a number of factors: the position of tongue in the mouth, the openness of the mouth, the shape of the lips, and the length of the vowels.

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A.Vowel sounds

B.Consonant sounds

C.Voicing sounds

D.Devoicing sounds

正确答案：Vowel sounds

Tag：英语语言学概论时间：2022-01-12 21:59:11

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