Paragraph Nine A survey of more than 285,000 US high school students carried out between1991 and 2012 found young people had fewer friends with whom to interact,butless desire for more friends. The research has also shown that teenagers have fewerfriends than 20 years ago, despite the increasing popularity of social media. 44. U_________to make more friends.
【正确答案】：Unwillingness
【题目解析】：本段介绍了美国中学生的交友状况。1991-2012年对美国28.5万中学生的调查发现年轻人能互动的朋友更少，交友的欲望更弱。虽然社交媒体越来越普及，但青少年的朋友比20年前更少。题目需要填写一个以U开头的名词，与交友有关。文中提到美国学生的less desire for more friends，可见这里最佳的答案应该是unwillingness（不愿意）。
