Shortage of Power Supply In recently years,there is a normally phenomenon that most of cities in China often shortage the power as soon as it is in the peak hours .Which have extremely affect people's daily life We can come up with different reasons for it in different people.There are only following two reasons.On the one hand , with the economic ages coming ,which no matter the compete among people or the economic and technological rate are develop quickly .Our surroundings always are all kinds of electric products including fuel-efficient bulb ,TV,refrigerator and the kitchen's furniture which all need the power to apply .And on the other hand,the sources of the earth are decreasing,such as fuels water and natural which can crate the power to supply our daily activities .To save it,we must limit the use of it properly. As my concerned,we can change our views and turn into the thought that protect ourselves from no sources to use.For example,turn off the light after we left our room.