�学家说“碳是生�的核心元素 其原因是碳原子 A参与所有化合物质组成 b是细胞中含量最多的 C构成生物大分子的骨架 D是生物界特有的 Template




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tomski�学家说“碳是生�的核心元素 其原因是碳原子 a参与所有化合物质组成 coloring