距离2012年12月四六级考试越来越近,现在正是四六级考生复习冲刺的黄金时期。为了助大家取得好成绩,在线四六级频道为考生网罗了四六级辅导名师,整合了各题型备考资料,给你一站式学习体验。
Unit 20
Passage One
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 , and among the larger schools, it s close 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 students, a statistic used to support its claim to be the largest private university in the country.
While the kinds of instruction offered in these programs will differ, DL usually signifies a course in which the instructors post syllabi , reading assignment, and schedules on Websites, and students send in their assignments by e-mail. Generally speaking, face-to-face communication with an instructor is minimized or eliminated altogether.
The attraction for students might at first seem obvious. Primarily, there s the convenience promised by courses on the Net:you can do the work, as they say, in your pajamas . But figures indicate that the reduced effort results in a reduced commitment to the course. While dropout rate for all freshmen at American universities is around 20 percent, the rate for online students is 35 percent. Students themselves seem to understand the weaknesses inherent in the setup. In a survey conducted for Cornell, the DL division of Cornell University, less than a third of the respondents expected the quality of the online course to be as good as the classroom course.
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