78. What is the main focus of the passage?
(A) The agricultural exports of the Pueblo peoples
(B) A comparison between Puebloans and other tribes
(C) The impact of modern development on indigenous lands
(D) A historical and cultural overview of the Ancestral Puebloans
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統計: A(0), B(1), C(3), D(38), E(0) #3455034
統計: A(0), B(1), C(3), D(38), E(0) #3455034