单项选择题

The editors said they must report to the world how Beijing has ______ pollution and improved the quality of the environment.

A．cut up
B．cut off
C．cut down
D．cut out
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单项选择题
If drug abuse, prostitution, pollution, environmental decay, social inequality, and the like ______, more is required than an increased police presence or a fresh coat of paint.
A．are to eliminate
B．are eliminated
C．are to be eliminated
D．are being eliminated
单项选择题
If the straggle for a sustainable society______, we must have some vision of what we are aiming for.
A．is to succeed
B．has succeeded
C．succeeds
D．succeeded
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