单项选择题

Officials estimate that supply has ______ demand by 7.5 billion since the beginning of 1988.

A. surpassed
B. transcended
C. outweighed
D. exceeded
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单项选择题
Human language is ______ to humans although some of the distinctive features of human speech may be observed in other species.
A. individual
B. unique
C. private
D. personal
单项选择题
Not long ago we reported a case ______ a child died of fright caused by the approach of a police officer in uniform.
A. that
B. whose
C. what
D. where
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