精选优质文档-倾情为你奉上大学英语四级作文范文10篇一 The Advantages and Disadvantages of Living in the 21st century(生活在21世纪的优缺点)Living in the 21st century offers certain advantages,such as a higher standard of living, but it also has some disadvantages, such as a polluted environment.To begin with, most people now have more money for less hard work. They earn higher salaries than before and enjoy better social security, such as social welfare for laid-off workers and disability insurance.Secondly, be