题目内容
Listen carefully and choose the word you hear.
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Which of the following letter or letter group can be pronounced as /r/ in English?
Generally, the light /l/comes before the vowel or diphthong in a syllable, but what about the dark /l/?_____________ the vowel or diphtong in a syllable. (After; Before)(填写答案时，请注意正确句首字母大小写的要求。)
延续音，发音时发音器官彼此靠近，但无接触，无摩擦，亦不产生爆破。
There are three approximants, and they are /r/, /w/, /j/.
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