阅读下列材料回答问题材料一 洞庭湖对长江流域极为重要.然而每年约1亿多吨未经处理的造纸废水正侵蚀着这片水域大量的工业废水和生活污水对该 Template




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tomski阅读下列材料回答问题材料一 洞庭湖对长江流域极为重要.然而每年约1亿多吨未经处理的造纸废水正侵蚀着这片水域大量的工业废水和生活污水对该 coloring