Learning from MIT, Harvard, UC Berkeley … for free

本帖最后由 洛客 于 2013-4-14 10:30 编辑

Learn from world’s best renowned professors and receive certificates of accomplishment from world’s top ranked universities and more, all for free. Interested? Please go to www.edx.org and find out for yourself. Want to improve your English? Join the 英语文法速成 Group.