49. What is the passage mainly about?
(A) The flavor of olive oil.
(B) The trade of olive oil.
(C) The promotion of olive oil.
(D) The quality of olive oil.
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統計: A(12), B(29), C(51), D(230), E(0) #2160303
統計: A(12), B(29), C(51), D(230), E(0) #2160303