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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(1)\"><em></em>下载文档(未登录)七年级上册历史第三单元知识点描述：历史并不是归类于人文科学或社会科学中，而是其间的桥梁。合并了两大领域的研究方法。一般来说，史学家通过研究各种书面文字但并不局限与此，努力并尝试解答和历史有关的问题。下面是小编整理的七年级上册历史第三单元知识点，仅供参考希望能够帮助到大家。七</a>';
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