document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=65531\">儿童传播新冠的风险比以前认为的高</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=65533\">天文学家可能在金星大气中发现生命迹象</a></p></div>");