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  3. The field of medicine has always attracted its share of quacks (庸医；江湖医生). The masons why quackery thrives even in modern times a

The field of medicine has always attracted its share of quacks (庸医；江湖医生). The masons why quackery thrives even in modern times a

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问题     The field of medicine has always attracted its share of quacks (庸医；江湖医生). The masons why quackery thrives even in modern times are not hard to find. To begin with, pain seems to be a chronic human condition. A person who suffers from some illness for a long time will pay any amount of money for the promise of relief. Second, even the best medical treatment can not cure all the ills. Third, many people lack the training necessary to evaluate medical claims. However, most remedies sold by quacks are not only useless, but often can be harmful to the user as well. By far the most potent reason that quack medicines still are sold around the world has to do with the power of "mind over matter". Your brain is the master organ of your body: It regulates all the chemical processes that keep you alive and well. When you become depressed and lose hope, your autonomic nervous system (植物神经系统) slows down these bodily processes and retards your chances of getting well. When you have hope and faith, these processes are speeded up. You are thus likely to recover even from the most dreadful diseases.
    The doctor who can convince the patients of their recovery cures more patients than the one whose behavior causes patients to lose faith in themselves. If a patient mistakenly believes that his condition can be cured by taking a drug of some kind, most physicians are happy to give him a placebo. The placebo does no harm at all, but it may so help the patient psychologically that the person’s pain diminishes and the patient may actually recover much faster than without taking the pill. Indeed, placebos may even have a physiological effect.
Doctors who prescribe placebos are ______.
选项 A、risking harm to their patients
B、prolonging their patients’ agonies
C、curing over 50 percent of serious diseases
D、helping their patients psychologically
答案D
解析 从文章第二段第二句开始直至全段结束可知，如果病人错误地认为他的病情可通过服用某种药得以减轻的话，医生会十分高兴地开出某种安慰剂。安慰剂不仅无副作用，而且还可从心理上帮助病人，使得病人的病情比起不吃药要恢复得更快。据此，D项符合题意，为正确答案。
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