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The country has already sent up three unmanned spacecraft, the most recent______
The country has already sent up three unmanned spacecraft, the most recent______
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2024-10-10
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问题
The country has already sent up three unmanned spacecraft, the most recent______at the end of last May.
选项
A、has been launched
B、having been launched
C、being launched
D、to be launched
答案
B
解析
考查独立主格结构。题干已有谓语,且这个句子的前后两部分是由逗号隔开的,因此逗号后面部分不能出现谓语动词,可排除A。C项表示正在被发射,D项表示将被发射,与后面的时间状语不符,也可排除。B表完成、被动,符合题干。
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