题目

15. Efforts to restore polluted rivers have resulted in a significant increase in water bodies classified under the ___, indicating good water quality.A. Surface Water Safety LevelB. Environmental Water IndexC. Grade I-III CategoryD. Clean Water Standard

15. Efforts to restore polluted rivers have resulted in a significant increase in water bodies classified under the ___, indicating good water quality.

A. Surface Water Safety Level

B. Environmental Water Index

C. Grade I-III Category

D. Clean Water Standard

题目解答

答案

C. Grade I-III Category