25. Which of the following is NOT mentioned in the article as a solution to the fresh water crisis?
(A) Removing trash and chemicals from waters.
(B) Using less water and reducing waste of it.
(C) Developing better systems to water crops.
(D) Turning salty sea water into fresh water.
詳解 (共 2 筆)
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水是我們最重要的自然資源。然而，儘管它覆...
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A.Steps are being ta...
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