题目内容
Listen carefully and choose the word you hear.
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Which of the following letter or letter groups can be pronounced as /f/?
What is difference between /f/ and /v/ in voicing?/f/ is__________ and /v/ is__________.
How many fricatives are there in English?There are _______fricatives. (空格处请填入英文数字)
Stop consonants are made by completely stopping the airflow at some point in the mouth and then release it into the sound that follows.
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