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ren zao hong feng chong xuan he
Pages: 6-7
Year: Issue:  12
Journal: Required Reading for Junior Middle School Students

Abstract: <正> 黄河在发源时水是清的,只是因为在流经黄土高原的过程中,水一下子变成了黄的。“黄”的含义是,黄河每年要从黄土高原带走16亿吨的泥沙。如果用1吨泥沙
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