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                            <td><a class='down_stat doc_title' href="javascript:void(0);">(湘教版)2016年八年级上：4.2《不等式的基本性质》ppt课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">&sect;3.1不等式与不等关系</a></td>
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