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Gaokao Biology Practice Question

3．（6分）将一株质量为20g的黄瓜幼苗栽种在光照等适宜的环境中，一段时间后植株达到 40g，其增加的质量来自于（）

  1. A.水、矿质元素和空气
  2. B.光、矿质元素和水
  3. C.水、矿质元素和土壤
  4. D.光、矿质元素和空气

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