document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=80681\">暴力引发的基因表观遗传能持续数代</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=80683\">长时间维护软件所面临的挑战</a></p></div>");