With the development of science and technology，people are attaching moreand more signifance to low-carbon lifestyle. There is no denying that we shouldlead a low-carbon life.For example ，we should turn off the light when we leavethe classroom，turn off the water tap when we finish washing and so on. What'smoreFurthermore，it's our duty to lead a low-carbon life，which does good to ourenvironmentsustainable development.Let us lead a low- carbon life !