题目内容

The IPA came into being towards the end of the ______ century.

A. nineteenth
B. eighteenth
C. seventeenth
D. sixteenth

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If the vocal cords are apart, the airflow is not obstructed at the glottis and it passes freely into the vocal tract above the glottis, the sounds produced in this way are called v______ sounds.

To form the present tense, 3rd person singular of the verb "teach", we have to add "-es", instead of just "-s" to it. This is required by the ______ of English.

A. assimilation rule
B. sequential rule
C. deletion rule
D. morphological rule

A phoneme is an abstract, distinctive and ______ unit.

A. phonetic
B. phonemic
C. phonological
D. phonic

A______ phonetics is concerned with how speech sounds are produced.