A sense of humor is a quality of mind. It can make one person to see and tell the amusing side of things. It is important in our life to get along with other people. A person with sense of humor makes people laugh and he or she can create a good social atmosphere. We are often attracted to a person who has a sense of humor.However, a person without a sense of humor always takes life too seriously. He or she may feel life is not a laughing matter or lose vitality. Then, he or she may become a dull. Therefore, we must never forget that a sense of humor helps us keep life in perspective. To be humorous and you will be an optimistic person and have a good life.

In modern cities, most people live or work in tall buildings. If we are careless about fire, it is easy to cause fires. It not only can take many lives, but also can cause damage. Therefore we must regard fire as a serious event. Prevention is better than cure. How to measure is a serious problem. For example, residents should prepare equipment like fire extinguishers and fire detectors. To inspect the facilities in the buildings is important. When we leave the house, we should turn off the light and gas stove because they might cause fire. To sum up, heavy casualties in fires mostly result from failure to obey the fire safety rules. If we follow fire prevention steps, we have a safe environment to live.