A Better World
Our world is changing.
Science makes our life better and colorful.All kinds of machines are used in our houses.They can hele us with our housework.When we feel tired,We just want to stay at home watching TV or playing on the computer.
On the order hand,it also brings troubles to us .The air in the city is being polluted .There is so much rubbish in the river.Trees are being cutting and high buildings are being built.Today,a better life has a new meaning .It means we live with clean air and pure water .