The successful launch of Tiangong­1 symbolizes a further step for China to join in the________of space stations previously mastered by Russia and the US.
A．invention　B．production
C．operation　D．preparation
C
考查名詞辨析。句意：“天宮1號(hào)”的成功發(fā)射使中國(guó)向空間站的運(yùn)作更近了一步，空間站技術(shù)先前只有俄羅斯和美國(guó)掌握。operation“運(yùn)行，操作”，符合語(yǔ)意。
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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

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