单项选择题

To achieve sustainable development, the ______ of resources is assuming new importance.

A. conservation
B. reservation
C. exhaustion
D. devastation
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单项选择题
A. He wants her to hand in her paper immediately. B. He is interested only in his ideas. C. He will accept a late paper from her. D. He will not accept a late paper from her.
A. He wants her to hand in her paper immediately.
B. He is interested only in his ideas.
C. He will accept a late paper from her.
D. He will not accept a late paper from her.
单项选择题
We won’t have safe neighborhoods unless we’re always ______ on drug criminals.
A. tough
B. rough
C. thorough
D. enough
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