[语篇解读] 如何保持身心健康？相信每个人对此都很感兴趣并能给出自己的答案。本文作者向我们介绍了一个有利于身心健康的，很重要又长期被人们忽视的因素——友谊。
1．What’ s the main idea of the passage?
A. People should make friends as many as possible.
B. Friendships do great good to human health.
C. People with friends have optimistic attitude.
D. Several studies have been done on friendships.
[解析] 主旨大意题。文章通过几个研究结果说明友谊在促进人类身心健康方面作用巨大。
