【关于雾霾的英语四级作文】In recent years, smog has become a serious environmental problem in many cities across China. It not only affects people's health but also causes great inconvenience to daily life. As students, we should pay more attention to this issue and take action to protect our environment.

Smog is mainly caused by the excessive emission of pollutants from factories, vehicles, and other sources. When these harmful substances mix with the air, they form a thick layer of haze that makes it difficult to see clearly and breathe comfortably. Long-term exposure to smog can lead to respiratory diseases, such as asthma and lung cancer. Therefore, it is very important for us to understand the causes and effects of smog.

To reduce the occurrence of smog, the government has taken some measures, such as restricting the use of private cars on certain days and promoting the use of public transportation. At the same time, people are encouraged to use energy-saving appliances and reduce the burning of coal and other fuels. However, these efforts are not enough. Each individual must also play a role in protecting the environment.

As students, we can start by doing small things in our daily lives. For example, we can choose to walk or ride bicycles instead of taking cars when possible. We can also save electricity and water, and avoid wasting resources. Moreover, we should raise awareness among others about the importance of environmental protection through activities like school campaigns or community events.

In conclusion, smog is a major challenge that needs to be addressed by everyone. Only when we work together can we create a cleaner and healthier living environment. Let’s take action now to make a difference for the future.