document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=77234\">NASA 火星直升机将无法再次飞行</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=77236\">接受基因疗法的耳聋儿童恢复听力和语言能力</a></p></div>");