48. What is the purpose of the passage?
(A) To promote a new concept.
(B) To criticize a theoretical model.
(C) To introduce a promising scholar.
(D) To differentiate several confusing terms.
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統計: A(32), B(5), C(0), D(1), E(0) #568682
統計: A(32), B(5), C(0), D(1), E(0) #568682