阿摩線上測驗
46. What would be the best title for this article?
(A)The Importance of a Clean Environment.
(B) The Autobiography of Chad Pregracke.
(C)CNN Top 10 Heroes of 2013.
(D) A Life’s Mission of Cleaning Rivers.
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統計： A(10), B(56), C(18), D(60), E(0) #1571084
統計： A(10), B(56), C(18), D(60), E(0) #1571084
