题目内容

The feature that distinguishes "a greenhouse" and "a green house" is ______.

A. tone
B. stress
C. intonation
D. aspiration

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In English, a phoneme may be represented by two or more allophones. The choice of the allophone is ______.

A. random
B. rule-governed
C. haphazard
D. unpredictable

For linguists, the study of s______ is of greater importance than that of writing.

If similar sounds that occur in the same environments are two distinctive phonemes, they are said to form ______.

A. phonemic contrast
B. phonetic distinction
C. complementary distribution
D. minimal pair

______ are produced by moving from one vowel position to another through intervening positions.

A. Vowels
B. Consonants
C. Diphthongs
D. Individual vowels