阿摩線上測驗
158. What is the main topic of the article?
(A) The decline of steel manufacturing in Chicago
(B) An innovative method of growing food
(C) A biography of Dr. Mary O'Connell
(D) The rising cost of vegetables
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統計： A(1), B(9), C(2), D(1), E(0) #3823458
統計： A(1), B(9), C(2), D(1), E(0) #3823458
