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【单选题】
世界上第一台电子数字计算机产生于( )年A.
1945
B.
1946
C.
1949
D.
1960
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【单选题】听了这首 《 我要去延安 》 你了解到:( )
A.
宝塔山不属于延安
B.
南泥湾不属于延安
C.
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D.
歌曲仅仅呼吁去延安旅游
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A.
would be operated by solar-powered engines
B.
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D.
would orbit thousands of miles high to catch the sun's light
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