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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1.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
2.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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“John killed Bill but Bill didn’t die” is a (n) （）.
題型：單項選擇題
The pair of words “l(fā)end”and “borrow”are（）.
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The compound word "bookstore" is the place where books are sold. This indicates that the meaning of a compound is the sum total of the meanings of its components.
題型：判斷題
In terms of the place of articulation, the following sounds [t][d][s][z][n] share the feature of （）.
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According to the ways antonyms differ, how many groups can we classify antonyms into?
題型：問答題