B 

Different weather makes people feel different.

It has an effect on 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 Northern and the Middle West,it is very hot at some time and very cold at the other times. 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 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 in exams in the hot months of the year (July and August) .

The 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 hard time in hot summer. At about 18°   C. people feel more comfortable.

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

() 4. Besides feelings,how many sides does this passage mention about weather's influence on people?

   A. Five. B. Four.

   C. Three. D. Two.

() 5. What does the underlined word “it” refer to in Paragraph 3 ?

   A. Health. B. Wind.

   C. IQ. D. Weather.

() 6. What's the main idea of this passage?

   A. Different changes of weather.

   B. At about 18°C.people feel more comfortable.

   C. Weather influences students’ intelligence.

   D. Weather influences people's health,intelligence and feelings.

() 7. Why do students in many schools in the United States usually get worse in exams in July and August?

   A. Because a very strong wind comes.

   B. Because the weather is very hot.

   C. Because they don't do well in their studies.

   D. Because they have low IQ.

() 8. In which page of the newspaper can you probably read this passage?

   A. Story. B. News.

   C. Discovery. D. Advertisement.

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