41. What is the primary focus of the passage?
(A) Social changes in urban communities.
(B) The growing housing crisis that affects affordability.
(C) Government strategies for urban development.
(D) Different renewable energy investments.
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統計: A(15), B(105), C(18), D(5), E(0) #3430677
統計: A(15), B(105), C(18), D(5), E(0) #3430677