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We have played a tremendous role in the evolution of the Earth’s natural systems.
We have played a tremendous role in the evolution of the Earth’s natural systems.
A.正确
B.错误
正确答案：正确
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高级综合英语
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第7单元，下列关于MySQL数据库备份与恢复的叙述中，错误的是（）
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We have an obligation to maintain the environment, as we depend on the resources and services it provides.