100410 社会 some people think that cheaper and cheaper travel by air is beneficial but other people think it has drawbacks to environment and the resources of the world. Discuss both views and give your own opinion.
100410 社会 In some societies, more and more people choose to live on their own. What is the reason for this, and is it a positive or negative trend?
100415 社会 Some people think that men and women have different qualities. Therefore, some certain jobs are suitable for men an