My hometown is a small city, which is surrounded by trees and clean rivers. Lots of fishes live happily in these rivers. The building is not tall and the streets are not very enough for cars to driving. People here were hart-working and the life was simple. Compared with the old days, there are tall buildings and cars around the street. Development of the economics caused the environment-destroying. The amount of trees and fishes are deeply decreasing. At present, environment reparing is of the most importance.