document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=63011\">老年痴呆症发病率下降可能是铅暴露减少的结果</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=63015\">华为证实 P40 没有 Google 应用和服务</a></p></div>");