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  3. Experts say about 1% of young women in the United States are almost starving themselves today. They are suffering from a sicknes

Experts say about 1% of young women in the United States are almost starving themselves today. They are suffering from a sicknes

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问题     Experts say about 1% of young women in the United States are almost starving themselves today. They are suffering from a sickness called anorexia.
    These young women have an abnormal fear of getting fat. They【C1】______starve themselves so they weigh at 15% less than their normal weight.
    The National Institute of Mental Health says one【C2】______ten cases of anorexia leads to serious medical problems. These patients can die from heart failure or the disease can lead young women to【C3】______themselves. For example, former gymnast Christy Henrich died at age 22. She weighed only 61 pounds.
    A person with anorexia first develops joint and muscle problems. There is a lack of iron in the blood.【C4】______the sickness progresses, a young woman’s breathing, heartbeat, and blood pressure rates slow down. The important substance calcium is【C5】______from the bones, something causing bones to break. Sometimes the brain gets smaller, causing changes in【C6】______a person thinks and acts. Scientists say many patients have further mental and emotional problems. They have【C7】______opinions about themselves. They feel helpless. Their attempts to become extremely thin may【C8】______efforts to take control of their lives. They may become dependent on illegal drugs. Some people also feel the need to continually repeat a(n) 【C9】______. For example, they may repeatedly wash their hands although their hands are clean.
    Anorexia is a serious eating【C10】______. If it is not treated on time, it can be fatal.
【C6】
选项 A、what
B、why
C、how
D、which
答案C
解析 本句句意：“有时大脑变小，造成人思维和行为方式的变化。”此处指“方式”的改变，所以选how。
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