摘要： The main idea of the article is that . A. a visit to a doctor’s office may cost as much as $15 to $50 in the United States B. the cost of medical care is the main reason for the high costs in the United States C. medical care in the United States costs a lot of money because doctors want to be rich D. the high cost of tuition in medical schools is one reason for the high cost of medical care in America

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