第26题: [单项选择]What is the purpose of this study A. To record social habits B. To analyze anti-social behavior C. To analyze frequency and purposes of social gatherings D. To analyze frequency and purposes of keeping diaries 参考答案:C 答案解析:文章一直都在解释这个研究的进行方法,并且提到了对visit的定义,从中我们可以推断出研究者重点要研究的是visits,也就是social gatherings。