下列关于组成生物的元素和化合物的说法正确的是 A.微量元素是生物生活所必须的含量很�的元素b.蛋白质和核酸构成了最基本的生�系统 Template




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tomski下列关于组成生物的元素和化合物的说法正确的是 a.微量元素是生物生活所必须的含量很�的元素b.蛋白质和核酸构成了最基本的生�系统 coloring