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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><div class=\"download_card\"><div class=\"card_nr card_nr_lb\"><h4 class=\"card_bt\">关于科学发声的练习步骤</h4><div class=\"download_card_msg\">科学的发声有益于我们对喉咙的保护，我们要怎么做好科学的发声，又应该如何才能做好科学发声步骤呢?下面小编给大家分享关于科学发声的练习步骤内容，希望能够帮助大家!科学发声的练习步骤一、打开喉咙在歌唱训练中“打开喉咙”是十分重要的中心环节，它直接。下面小编给大家分享关于科学发声的练习步骤，希望能帮助到大家。 关于科学发声的练习步骤文档下载网址链接：</div></div><div class=\"download_card_btn download_card_btn_lb\"><div class=\"content_box_tj\"><span>推荐度：</span><img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\"></div><div class=\"downlod_btn_right demo_tc downlod_btn_right_lb\"><em class=\"downlod_icon\"></em>点击下载文档<span>文档为doc格式</span></div> </div></div></a>';
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