九年级期中考试作文

Changes of the Holiday life

In the past, students has few activities during their holidays. Most of them stayed at home to do homework, helped with the housework and watched TV. The holiday life was boring.

With the development of the living conditions, great changes have taken place now. Students can enjoy different kinds of holidays lives, such as surfing the internet, joining in the club and going for a trip. They can also go to the museums, do some volunteer work to help people in need or do other interesting activities. All these things can help students improve knowledge, train skills and increase experiences. They are necessary and helpful.

At present, the air is seriously polluted and the hazy weather often appears. Why? More and more cars are used and plenty of coals are burnt. The factories giving out much harmful gas. When many tall building are built, there will be much dust in the air. Of course, there are some other reasons.

The hazy weather is harmful. It has a bad effect on people. It may make it easy for people to cough. It may also lead to lung cancer. So we must try to protect ourselves. We should try not to go outside and keep the door and windows closed in such weather. When we go out, we should wear masks. We ought to eat more fruits and vegetables to make ourselves stronger.

How can we improve the quality of the air? We should live a low-carbon life. For example, we can go to work by bike or on foot instead of by car. We should plant more and more trees and other plants. I think the air will become cleaner and cleaner in the future.