1.A 海拔越高,空气越稀薄.
2.A 物品在燃烧时释放二氧化碳.
3.C 植物只能从空气和水中获取食物,是错误的,还有土壤等.
这原来不是英语题,是生物化学啊.
英语题目.速回答1.The ___the air is from the ground ,the ___the air
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