题目内容
/i./,/i/,/e/ areall ____ vowels.
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/p/,/t/,/k/ are_____.
In_______phonetics, we investigate the properties of the sound waves.
Suprasegmental features are those aspects of speech that involve more than one single sound segments. The principal suprasegmentals are ________.
Besides [s],[z],otherfour sibilants are _________, ________,_ ________, ________.
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