In many parts of the world, large numbers of trees ______ (遭到砍伐) and the eco log

游客2023-07-22 50

问题 In many parts of the world, large numbers of trees ______ (遭到砍伐) and the eco logical balance of nature has been disturbed.

选项

答案 have been cut down

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Inmanypartsoftheworld,largenumbersoftrees______(遭到砍伐)andtheecolog