题目内容

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

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In the production of v______ sounds, the passage of the airstream is relatively unobstructed; we have no blockage of the air as it is pushed out of the lung.

A___________ phonetics studies how the listeners perceive the sounds.

Of the three branches of phonetics, the longest established and until recently the most highly developed, is articulatory phonetics.

A. 对
B. 错

A diphthong is a sequence of two sounds: a vowel plus a glide.

A. 对
B. 错