In August 1977, a satellite（）to gather data about the 10 million black holes which are thought to be in the Milky Way. 选项 -题库考试答案搜索网

In August 1977, a satellite（）to gather data about the 10 million black holes which are thought to be in the Milky Way. 选项

单选题

2021-09-02 11:56

A、launched
B、was launched
C、has been launched
D、is launched

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正确答案

B

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标签：英语一

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