文档介绍：
第 2 页 共 medical technology which leads to better medical care and treatment, peoples life expectancy is longer. Moreover, most people now can afford to buy foods of high nutrition and enjoy their leisure time.
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.
Nevertheless, living in the 21st century also has its disadvantages. The most serious one is the increasingly polluted environment; air is filled with smog and water is contaminated by iehemicals from main disadvantage is the personalization of human relattonships which mostly result from peoples ever-increasing contact with machines and numbers. Still one more disadvantage is the weakening of spiritual values. An undeniable fact is that a large number of people are solely interested in materialistic culture,while neglecting spiritual civilization. Limited by space, we have to skip the examples.
In conclusion, although the 21st century has indeed given us a lot of advantages, it may not