长江,亚洲第一长河,全长6397千米。它发源于青藏高原唐古拉山的主峰各拉丹冬雪山。总面积1808500平方公里(不包括淮河流域),约占全国土地总面积的1/5,和黄河一起并称为“母亲河”。 ....................................................................................据不完全统计,从上海至宜宾江段,长江上共有85座大桥(含长江隧道),你见过几座呢? ....................................................................................
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