document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=64062\">从火星取回的样本是否会危险到地球？</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=64064\">为何新冠对儿童影响较小？</a></p></div>");