英语B级阅读练习

1.、Questions 57 to 61 are based on following passage. By almost any measure, there is a boom in Internet-based instruction. In just a few years, 34 percent of American universities have begun offering some form of distance learning(DL), and among the larger schools, it's closer to 90 percent. If you doubt the popularity of the trend, you probably haven't heard of the University of Phoenix. It grants degrees entirely on the basis of online instruction. It enrolls 90,000 student, a statistic used