Different weather makes people feel different.It influences

Different weather makes people feel different.It influences (影响) 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 every 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 1983 report by scientists,IQ (智商) of a group students were 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 .Weather also has a strong influence .It can make people become stronger.
Low air pressure (气压) may make people forgetful.People leave more bags .Are you feeling sad,tired,forgetful,or unhappy today?It may be the weather’s problem.
( )46.____ can have a bad effect (作用).
A.Hot and wet weather B.Good weather 　C.Warm weather D.High intelligence
( )47.People may have more intelligence when _____ comes.
A.a rain B.very hot weather 　　C.a strong wind D.low air pressure
( )48.Low air pressure may make people _______.
A.forgetful B.sad C.angry D.tired
( )49.In “good weather” of 18 centigrade,_______.
A.people are very forgetful B.people can’t do their work well
C.thin people feel cold D.people are in better health
( )50.The writer wants to tell us that _______.
A.hot and cold weather influences all people in the same way
B.weather influences people’s lives
C.IQ never changes during weather changes
D.There is a good kind of weather for people’s work and health