document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=72460\">过量饮酒会缩短端粒</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=72462\">17 岁少年设计出不使用稀土磁铁的电机</a></p></div>");