49. When did people begin to see another benefit of green buildings-saving money?
(A) In the 1970s
(B) In the 1980s
(C) In the 1990s
(D) In the 2000s
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統計: A(282), B(652), C(455), D(123), E(0) #3157094
統計: A(282), B(652), C(455), D(123), E(0) #3157094
詳解 (共 4 筆)
#5975500
decade 10年
1970+10=1980
5
0