6.在维持生物圈的碳 氧平衡重主要是通过植物的 A.�吸作用b.光合作用c.蒸腾作用d.以上都是——青夏教育精英家教�—— Template




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tomski6.在维持生物圈的碳 氧平衡重主要是通过植物的 a.�吸作用b.光合作用c.蒸腾作用d.以上都是——青夏教育精英家教�—— coloring