Different weather makes people feel different. It influences health, intelligence 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 sometimes and very cold sometimes. People in these states have more heart trouble after the weather changes in February or March. The weather can also influence intelligence. For example, in a 1983 study by scientists showed that the IQ 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 do 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 these months. They might feel unhappy during cold weather. But fat people may have a hard time in hot summer. At about 18 °C , people become stronger. Low air pressure( 气压 ) may make people forgetful. People leave more bags on buses and in shops on low-pressure days. There is "good weather" for work and health. People feel best at a temperature of about 18 °C . Are you feeling sad, tired, forgetful, or unhappy today? It may be the weather's fault. ( ) 6. ________ can have a bad effect on health. A. Hot and wet weather B. Good weather C. Warm weather ( ) 7. People may have more intelligence when ________ comes. A. a rain B. very hot weather C. a wind ( ) 8. Low air pressure may make people ________. A. forgetful B. sad C. angry ( ) 9. In "good weather" of 18 °C , ________. A. people are very forgetful B. people are in better health C. thin people feel cold ( ) 10. The article mainly tells us that ________. A. Hot Weather Causes Health Problems B. Weather Influences Health, Intelligence and Feelings C. Different Weather Makes People Feel Bad