I hear that you're going to recruit the novel of the differences between the hometown's past and now.I think that my hometown is quite worth being introduced. In the past,the environment is quite great.What surrounded my hometown was the green trees and blue river,you can even find that the fish were enjoying the clear water.Though the house was simple,the street was narrow,people who lived here still led a hard-working and happy life. Many thing have been changed in present.Plenty of the tall buildings standing here, which makes our hometown be crowded.Different traffic rush on the road every day.The environment was polluted extremely by the industry.What's worse,those trees and fish have disappeared. So as far as I'm concerned,the problem of pollution is serious.It should be solved as soon as possible.