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單項選擇題

What the element ‘-es’ indicates is third person singular, present tense, the element ‘-ed’ past tense, and ‘-ing’ progressive aspect. Since they are the smallest unit of language and meaningful, they are also（）.

A.phonemes
B.morphemes
C.allophones
D.phones

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單項選擇題

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

A.auditory
B.acoustic
C.articulatory
D.none of the above three

單項選擇題

In English, “pill” and “bill” are （）.

A.a phonemic contrast
B.complementary distribution
C.assimilation
D.a minimal pair

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