Pollution of environment These days we often hear that (our living conditions are getting more and more serious because of the destruction of our environment )
.It
is common that (many trees and animals are near extinction, and the all-important food chain has been destroyed.). Why does such circumstance occur in spite of social protects? For one thing, (the population of the world is increasing so rapidly that the world has been so crowded. ).For
another,(the overuse of natural resources has influenced the balance of natural ecology ). What is more, since (the industrial revolution ),it is natural that (a great number of factories have been springing up like mushrooms. The smoke and harmful chemicals released from factories also pollute the environment). To solve the problem is not easy at all, but is worthing. We should do something such as (planting more trees, equipping cars with pollution-control devices and learning to recycling natural resources )to improve the present situation, and I do believe everything will be better in the future.1、国内挖机的二手市场基本上以上海,深圳这两地最全最大。 2、上海那边不太了解,深圳相对知道一点。 3、早年深圳的机确实很不错,原装原机而且型号齐全,可能是深圳靠近香港...[详细]