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                            <td><a class='down_stat doc_title' href="javascript:void(0);">3.1列代数式(2)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">代数式</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">4.2代数式</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">3.2代数式</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">1.1 代数式（一）</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">1.1 代数式（一）</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">代数式的值(一)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">代数式(第1课时)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">(1)作业本:4.2代数式</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">(1)作业本:4.2代数式</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">第3节 代数式求值</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">代数第八章因式分解</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">数学：4.3代数式的值-教学课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">代数第八章因式分解</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">第三章整式的加减-第一节列代数式</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">数学：4.3代数式的值-教学课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">七年级数学上册《代数式求值》上课课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">七年级数学上册《代数式求值》上课课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">(北师大版)七年级数学上册：3.2《代数式》ppt课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">(北师大版)七年级数学上册：3.2《代数式》ppt课件</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">浙教版七年级数学上4.2《代数式》课件(共15张PPT)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">湘教版七年级数学上2.3代数式的值课件(共13张ppt)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">浙教版七年级数学上4.3《代数式的值》课件(共19张PPT)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">湘教版七年级数学上2.3代数式的值课件(共13张ppt)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">浙教版数学七年级上册第4章《代数式》测试题有答案(PDF版)</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">数据的代表</a></td>
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                            <td><a class='down_stat doc_title' href="javascript:void(0);">3.1.1 从算式到方程(2)-</a></td>
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