31. What discourse organization does the author use in paragraph A?
(A) The author identifies a problem and lists some solutions.
(B) The author gives an opinion and provides evidence for that opinion.
(C) The author presents a counterargument to an opposing argument.
(D) The author speculates the solutions for the problem.
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統計: A(308), B(17), C(3), D(18), E(0) #2751886
統計: A(308), B(17), C(3), D(18), E(0) #2751886