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, because of the advance in medical technology which leads to better medical care and treatment, people’s life expectancy is longer. Moreover, most people now can afford to buy foods of high nutrition and enjoy Thirdly, modern conveniences such as radio, TV, internet, various vehicles and labour-saving machines in the home, all greatly facilitate human communication, transportation and housework as well. their leisure time. 本文来源：https://www.wddqw.com/doc/2ae7ad050a4e767f5acfa1c7aa00b52acfc79cef.html