document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=71822\">盖亚探测器揭示恒星 DNA 和星震</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=71824\">科学家用废料制造水泥</a></p></div>");