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【单选题】
As examples of the use of solar power, the author describes_______.A.
how solar power is provided in every building in Japan and the U.S.
B.
how solar roofs are used in Japan and the U.S.
C.
how Japanese scientists are producing cheap solar power
D.
how most buildings in the U.S. are heated by solar power
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【简答题】What have people who listened to the radio regularly ever experienced?
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