题目内容

1.C________are produced with some restriction or closure in the vocal tract that obstructs the flow of air from the lung.

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1.When we are producing the r________, the tip of the tongue is curled back and the air passes over it.

1.A p__________ is a person who can describe speech, who understands the mechanisms of speech production and speech perception.

D_______ are used to transcribe the minute differences between variations of the same sound in actual language environments or by different speakers.

When we are producing the P__________, the obstruction occurs by raising the front part of the tongue to the hard palate.