document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=74212\">韩国去年的总和生育率为 0.78</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=74214\">斑马的条纹如何阻止马蝇叮咬</a></p></div>");