2. 公务员
  3. The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March.

The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March.

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问题 The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March.
选项 A、has been launched
B、having been launched
C、being launched
D、to be launched
答案B
解析 分析句子结构，此处考查独立主格结构。the most recent是独立分词结构的逻辑主语，指“最近的无人宇宙飞船”，与launch之间为动宾关系，因此用被动语态。又由独立分词结构中的时间状语“at the end of last March”可知，动作已经完成，故用分词结构的被动完成时，选B。
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