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第1题

The teachers hold 4 to answer questions that the students have posted. A. virtual office hours B. face
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第2题

They can join online groups 3 . A. to discuss the quizzes B. to exchange questions and answers C.
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第3题

Which is not true about the free online courses? 2 A. Students can watch short videos. B. Students ma
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第4题

1 started its first MOOC in 2012. A. The Massachusetts Institute of Technology B. Harvard University
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