高等教育 / 新发展英语综合教程（二）
The way to stop wasting our limited water is to _ _ _ _ _ _ _ _ .
A.do experiments with water
B.purify the used water and reuse it
C.use fresh water once again
D.make use of seawater
A.do experiments with water
B.purify the used water and reuse it
C.use fresh water once again
D.make use of seawater
参考答案：
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