28. Which of the following is used by the author to support the topic sentence in the passage?
(A) Creating documents.
(B) Drawing conclusions.
(C) Making comparisons.
(D) Giving reasons.
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統計: A(3), B(3), C(1), D(6), E(0) #803822
統計: A(3), B(3), C(1), D(6), E(0) #803822