12.Nowadays there are various methods to relieve the pressure in modern life. Some reador exercise, others work in their gardens. What do you think are the best ways of reducingstress? 或 Since cities have changed a lot, the size of the cities has grown enormously.

　　Discuss the causes and consequence of the enormous size of cities. 或A balanced diet, oreating balanced meals, is the key to a healthy life. To what extent do you agree or disagreewith this statement? Give reasons for your answer.