阿摩線上測驗
52. Which of the following is a problem of MOOCs mentioned in the passage?
(A) The disappearance of traditional course materials.
(B) The limited number of courses offered around the world.
(C) The overreliance on professors from prestigious universities.
(D) The lack of social interaction among students and professors.
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統計： A(7), B(24), C(20), D(92), E(0) #563531
統計： A(7), B(24), C(20), D(92), E(0) #563531
