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  3. Some people feel sad or depressed during the winter months in northern areas of the world. They may have trouble eating or sleep

Some people feel sad or depressed during the winter months in northern areas of the world. They may have trouble eating or sleep

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问题   Some people feel sad or depressed during the winter months in northern areas of the world. They may have trouble eating or sleeping. They suffer【C1】______a condition known as Seasonal Affective Disorder, or SAD.
【C2】______of SAD【C3】______its effects during the short, dark days of【C4】______. The problems are most【C5】______in the months when there are fewer hours of daylight. When spring arrives, these signs【C6】______and SAD victims feel【C7】______again.
  The National Mental Health Association reports that SAD can【C8】______anyone. The group says young people and women are【C9】______the highest risk for the disorder. It says that an estimated twenty-five percent of the American population suffers from some form of SAD. About five percent suffer from a severe form of the【C10】______.【C11】______, many people in other parts of the world also have the condition.
  To treat the disorder, victims of SAD do not need to wait until【C12】______. Experts know that【C13】______affected individuals【C14】______bright light each day【C15】______the condition.【C16】______, there are other things people can do to ease the problem. They can【C17】______the sunlight in their homes and workplaces. They can spend【C18】______time outdoors in the fresh air during the day.
  One study found that walking for an hour in winter sunlight was as【C19】______as spending two-and-one-half hours in【C20】______light indoors.  
【C17】
选项 A、improve
B、reduce
C、increase
D、use
答案C
解析
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大学英语四级

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