单项选择题

We must abide by the rules.

A. stick to
B. persist in
C. safeguard
D. apply
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单项选择题
The lowest temperature that man has ever known was recorded in Antarctic
A． RightB. WrongC. Not mentioned
单项选择题
Winter temperatures average 85 degrees below zero in Antarctic
A． RightB. WrongC. Not mentioned
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