Now methods need to beto use the existing water resources, for example, turning sea water

发布时间:2020-08-16 14:10:01

Now methods need to be    to use the existing water resources, for example, turning sea water into fresh water.
A. developed
B. assumed
C. abandoned
D. purchased

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(答案→)A. developed
B. assumed
C. abandoned
D. purchased
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