Ever since early the last century,electricity has become an essential part of our modern life.Our industrial and agricultural production depends on it to run various kinds of machines.The modern wonder computers work on electricity too.It provides light,heat and power for us.If we want to watch TV or films or to listen to the radios we also need it.Nobody can deny that the development of our civilization depends on electricity.If there were no electric power,our modern world would be in trouble.For one thing all the wheels would stop because the motors that power the machines would fail.For another,many,if not all,of our industries would cease production.All the world transport system,in addition,would be felt on the world¡¯s communication systems.Thus our modern world would be impossible without electricity.ª¥

    Therefore,we should make better use of electric power. On the other hand,we should educate people to economize using electricity and not to waste the energy resources with no thought for the future.At the same time we must do our best to exploit more electric resources to meet the requirements of the human beings and to avoid energy crisis in the future.