49 According to the passage, which of the following statements is NOT true about solar energy?
(A)It doesn't create any pollution.
(B)It can be used for a long time.
(C)It needs much maintenance work.
(D)It doesn't work well in colder regions.
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統計: A(77), B(140), C(721), D(111), E(0) #1985365
統計: A(77), B(140), C(721), D(111), E(0) #1985365