Different weather makes people feel different. It influences health, intelligence(智力) and feelings.

    In August, it is very hot and wet in the southern part of the United States. People there have heart trouble and other kinds of health problems during this month. In the Northeast and the Middle West, it is very hot at some times and very cold at other times. People in these states(州) have more heart trouble after the weather changes in February or March.

    The weather can also influence intelligence. For example, in a 1983 report by scientists, IQ(智商) of a group of students was very high when a very strong wind came, but after the strong wind, their IQ was 10% lower. The wind can help people have more intelligence. Very hot weather, on the other hand, can make it lower. Students in many schools of the United States often get worse on exams in the hot months of the year (July and August).

    Weather also has a strong influence on people's feelings. Winter may be a bad time for thin people. They usually feel cold during these months. They might feel unhappy during cold weather. But fat people may have a hard time in hot summer. At about 18℃, people become stronger.

    Low air pressure(气压) may make people forgetful(健忘). People leave more bags on buses and in shops on low-pressure days. People feel best at a temperature of about 18℃.

    Are you feeling sad, tired, forgetful, or unhappy today? It may be the weather's problem.

    My neighbor is a doctor. He and his wife are some of the1people I have ever met. A few years ago, we started this kind of "favor war" where one of us would do something kind for the other, such as2the driveway or building a shed, and next time the other would3to top it with another favor.

    Yesterday morning, it snowed heavily and I remembered he shoveled (铲) my driveway for me. So I took out my shovel and took care of both our driveways and sidewalks because it was my turn to do a favor4. It took a while but I finished it and got into my car for work.

That night I got a5on my door, it was my neighbor. He immediately shook my hands and thanked me for shoveling his driveway and sidewalk, so that he was able to get to work earlier and6a boy.

    "As soon as I started the car early this morning, a call came through that a young boy in our neighborhood was seriously ill.7, my partner and I were only about 2 minutes away, but the closest ambulance 10 minutes," added he. "A young boy got to live his life because you did me the favor."

    It wasn't too much8to shovel a driveway, but what I did got a young boy to see his family again, go back to school again and live his life again.9favor is too small. Even the smallest favor can make the biggest10. One favor will always be followed by another.