Journalists and researchers have been looking for new ways to describe the changes in the lives of the millennial generation. Some say today's 20-somethings are living an “extended adolescence.” \_41\_, they are still like teenagers. Others say they are having a “delayed adulthood.” The term “boomerang kids” is popular. That means young people leave their parents’ house \_42\_, like a boomerang thrown through the air, later return. Research psychologist Jeffrey Arnett says these terms can suggest that many Americans \_43\_ 20-somethings. He says, “There’s a tendency at least in the United States for people to look at this negatively and to deplore it and say what’s wrong with them that they won’t grow up?” He calls the 20s a “special decade of life.” He says Americans should consider the positive aspects. For example, 20-somethings usually have a series of school and work experiences. They may have several serious romantic relationships. Or they might try living in different cities or even different countries. “It’s the freest time of your life. It’s the one time of your life 44 you can get up and go basically anywhere you want and travel and experience new things, do a service project in some remote part of the world, or just experience the freedom of being 45 in your 20s.” He calls this a time of “emerging adulthood.” In other words, 20-somethings are more mature than adolescents but not quite full adults. He says because emerging adults try so many things, they will ultimately make better choices about work, love and home. 第 46 題至第 50 題測驗整體閱讀理解能力，請讀完全文後，從各題四個選項中選出一個正確答案。