A. We won't have any changes.

B. We can understand everything.

C. We will be changed, inside and out.

D. We can never forget what we read.

答案:C

解析:推理判断题。根据尾段爷爷的话"but when you read them, you will be changed, inside and out"可知, 当我们读书的时候, 我们的内在和外在都会变化。

　　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 have more heart trouble after the weather changes in February or March.

　　The weather can also influence intelligence. For example, in a scientific report, IQ of a group of students was very high when a very strong wind came, but after the strong wind, their IQ was 10% below. 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 may make people forgetful. People leave more bags on buses and in shops on low-pressure days. There is a "good weather" for health. 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.

5. What kind of weather can have a bad effect on health?

A. Hot and wet weather. B. Good weather.

C. Warm weather. D. High intelligence.

答案:A

解析:细节理解题。根据第二段的"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. "可知, 天气炎热潮湿是会给健康带来不利影响的, 故选A项。

6. When may people have more intelligence?

A. When a rain comes.