参考答案：错

解析：[听力原文] A college education can be very costly in the United States, especially at a private school. Rising costs have led more and more families to borrow money to help pay for college. In 1993, less than one-half of graduates from four-year colleges had student loans. Now two-thirds of them do. Their average loan debt when they graduate is 19,000 dollars. At public universities, the average is 17,000 dollars.

[分析]： 数字信息的找寻和判断。 根据原文有关数字信息In 1993，less than one-half of graduates from four-year colleges had student loans 即在1993年，四年制大学中不到一半的人拿到过学生贷款，这与题干中的 50％不符，另外原文Their average loan debt when they graduate is 19,000 dollars 即毕业时，他们的平均贷款债务为19,000美元，这与题干中17,000美元的说法不符，因此本题的说法是错误的。[解题关键] 根据题干特点注意数字方面的相关内容。