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　　参考范文：

　　Should teenagers be allowed to have part-time jobs?

　　Winter holiday is coming. Many students plan to have part-time jobs. But some parents disagree. They think it wastes the students’ time and it isn’t safe as well.

　　In my opinion, teenagers should be allowed to do some part-time jobs. Firstly, they can experience different lives and get more knowledge outside school. Meanwhile, after learning about the difficulty of making a living, they will cherish what they have now. What抯 more, teenagers should have chances to make decisions by themselves..

　　Of course, safety is the most important. Teenagers should learn to protect themselves when doing part-time jobs.

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　　参考范文：

　　These years the haze weather appears more and more often. Because of the haze weather, students have fewer outdoor activities than before.

　　People have to wear masks when they go out. Also, there are more traffic accidents on the road.

　　Air pollution has become a serious problem. It is bad for our health. Everyone should take action to protect the environment. For example, we can change our life style. We can ride bikes or take buses when we go out. I plan to plant more trees in the future.