Which of the following photographs (A, B, C or D) shows a strategy for providing insulation for the building and cooling the outdoors?
(A)5e0d7d6754508.jpg
(B)5e0d7d71e3469.jpg
(C)5e0d7d8737a98.jpg
(D)5e0d7d9ac8e56.jpg

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統計: A(0), B(0), C(8), D(3), E(0) #2137000