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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\">人类可用水占全球水量百分之几</h4><div class=\"download_card_msg\">生命之源_人类生存的危机 
&ensp;&ensp;&ensp;&ensp;九　生命之源 
&ensp;&ensp;&ensp;&ensp;水在人类和生物圈的整个生命活动中起着巨大的作用。生命离不开水，有生命的地方就有水。水是任何生物体构成。下面小编给大家分享人类可用水占全球水量百分之几，希望能帮助到大家。 人类可用水占全球水量百分之几文档下载网址链接：</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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