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

题目简介

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

题目详情


The country has already sent up three unmanned spacecraft, the most recent _____ at the end of last March.
A.has been launchedB.having been launched
C.being launched D.to be launched
题型:单选题难度:中档来源:不详

答案

B
句意为:这个国家已经发射了三艘无人驾驶宇宙飞船,最近的一艘于去年三月底发射。A项使后半部分成为一个分句.但两个分句之间无关连词,故排除;B项表示该动作已
被完成;C项表示该动作正在被完成;D项表示该动作将要被完成.从时间状语可知.答案应该选B。

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