Directions: In this section of the test, there are ten paragraphs. Each of the paragraphs is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Spell out the missing letters of the word on your Answer Sheet.
A survey of more than 285,000 US high school students carried 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.
44. U______ to make more friends.
【正确答案】：Unwillingness
