长江全长6300千米。 比黄河长800余公里，在世界大河中长度仅次于非洲的尼罗河和南美洲的亚马孙河，居世界第三位。但尼罗河流域跨非洲9国，亚马孙河流域跨南美洲7国，长江则为中国所独有。 长江发源于“世界屋脊”——青藏高原的唐古拉山脉各拉丹冬峰西南侧，是中华民族的母亲河。干流流经 … https://jingyan.baidu.com/article/148a1921cdb6f60c71c3b1b3.html

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