试题题干
The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.
A survey of more than 285,000 US high school students earned out between 1991 and 2012 found young people had fewer friends with whom to interact, but less desire for more friends. The research has also shown that teenagers have fewer friends than 20 years ago, despite the increasing popularity of social media.
（）to make more friends.
参考答案
正确答案：
试题解析
本段主要讲了现在的年轻人不愿意交更多的朋友。一项对1991至2012年间285000多名美国高中生的调查发现，年轻人和朋友之间的交往较少，对交更多朋友的欲望越来越少。研究还表明，尽管社交媒体越来越受欢迎，但青少年比20年前的青少年的朋友要少。unwillingness 不愿意。