阿摩線上測驗
51. What is the second paragraph mainly about?
(A) The impact of MOOCs.
(B) The goal of MOOCs.
(C) The size of MOOC classes.
(D) The cost of MOOC courses.
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統計： A(74), B(26), C(30), D(19), E(0) #563530
統計： A(74), B(26), C(30), D(19), E(0) #563530
