出处：校本练习
话题：教育与人的寿命的关系
入选理由：文章内容结构清楚帮助学生了解任务型阅读框架结构题型中框架与文章结构的关系，且内容对学生认真学习有促进作用。
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。注意：每空格1个单词。
Health researchers have noticed that some groups of people are more consistently healthy than others, and wondered… Is it race? Income? Where you live? In the United States, these disagreements in health outcomes have been the focus of intense research for the past several decades.
