| 摘 要： | Online learning, which is based on computer, is a social, collaborative, interactive and learner-centered affair for both tutors and students. It is sure that online education will be one of the most important alternative ways to conventional classroom teaching and learning. Learning online is like taking part in long-running and stimulating discussion with a group of sympathetic and like-motivated colleagues. The optimized learning site can teach students in accordance of their aptitude and help students learn according to their needs.
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