The cost of medical care in the United States is very high. The time and money that doctor

s spend on their medical education are probably one reason for this problem.

A visit to a doctor’s office costs from fifteen to fifty dollars. It is impossible to pay for the medical care they need. Many people in the United States think that doctors are overpaid. Most doctors, however, disagree. They say that they were required to study medicine for a long time. Tuition(学费)for many years of medical education costs a lot of money. Doctors say that it is necessary for most medical students to borrow money from a bank to pay their tuition. Because this money must be repaid to the bank, young doctors need a lot of money for their work. So, they charge people high prices for medical care. Therefore it is possible that the high cost of medical care in America is unnecessary. Because high tuition is one cause of high costs, one way to lower costs would be to have medical schools that are free or have low tuition.

Some people do not have their medical care they need because ______.

A．they are not willing to pay high tuition for the doctors

B．they don't think it necessary to have medical care

C．they don't want to spend much money on it

D．they haven't got enough money to pay for it