The university is saving $ 300,000 per year by its energy ______ efforts.A．consu_刷题宝

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The university is saving $ 300,000 per year by its energy ______ efforts.

A．consumption	B．conservation
C．suspension	D．prohibition

上一题下一题 0.4难度单项选择更新时间:2015-04-27 04:47:01

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