document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=84416\">轨道上的中国火箭残骸急剧增加</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=84418\">科学家用鼻喷剂逆转大脑老化</a></p></div>");