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With the successful launch of Tiangong-I, which was ______ breakthrough in space field, China's space dream took a step closer to ______ reality.

A. a; / B. the; a C. a; the D the; /

 

A

【解析】

试题分析:句意:随着航空领域的一大突破天宫一号的成功发射,中国的太空梦朝现实更迈进了一步。第一空填a,泛指这是一个突破,第二空不填,reality是抽象名词,选A

考点:考查冠词

 

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