单项选择题

In English，the aspirated [ph]and the unaspirated [p]are（）.

A.minimal pairs
B.in phonemic contrast
C.two distinctive phonemes
D.in complementary distribution

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单项选择题
A language proficiency test that only consists of multiple-choice questions lacks （）.

A.construct validity
B.content validity
C.test reliability
D.scorer reliability
单项选择题
When the train （），all the school students were surprised to see that the Carlisle team had one man only.

A.pulled down
B.pulled on
C.pulled off
D.pulled in
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