Most people are not yet aware that water is a precious resou

时间:2021-10-25 15:35来源:未知作者:admin 点击: 次

(单选题)17: Most people are not yet aware that water is a precious resource that must be_________. A: conserved B: enriched C: preserved D: reserved

(单选题)17: Most people are not yet aware that water is a precious resource that must be_________.

A: conserved

B: enriched

C: preserved

D: reserved

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