What does the author imply by saying "living space.., is figured.., also in cubic volume______above the earth"(in para 3)?

A.Our living space on the earth is getting smaller and smaller B.Our living space should be measured in cubic volume C.We need to take some measures to protect space D.We must create better living conditions for both birds and animals

时间:2023-01-28 17:38:21

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