A.Nature changed our environment over the years.B.We must avoid wasting resources and

外语类 公共英语 已帮助 人

A.Nature changed our environment over the years.

B.We must avoid wasting resources and polluting our environment.

C.Our resources are nearly used up.

D.Trips to other planets will help eliminate pollution.

请帮忙给出正确答案和分析,谢谢!

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