With the improvement of living standard, more and more people are concerned about their health. Thirty percent of the world’s population death is caused by heart disease. In China, there are hun
In spring, the weather changes a lot. In the morning, when I took bus to school, the weather was breezy and comfortable. It thought it would be a great day. However, when I got to school, the sky turn
Don't you see the heavy smokes from the big chimneys? Don't you smell the gas from the motors all around the streets? We've got much dirtier air! the iceburgs are melting from the warmer winter becaus