单项选择题

CCELD is distinctive for its_____.

A．clear grammar codes
B．language notes
C．usage notes
D．extra columns
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单项选择题
Australia is the world's _____ continent.
A．smallest
B．coldest
C．warmest
D．lowest
单项选择题
Scotland Yard is the headquarters of the_____.
A．British Supreme Court
B．police of Scotland
C．London police force
D．Horse Guards of London
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