In which year did the first man-made satellite, Sputnik 1, launch?A、1957B、1961C、1970D、1985
In which year did the first man-made satellite, Sputnik 1, launch?
A、1957
B、1961
C、1970
D、1985
发布时间：2025-12-12 15:00:27
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答案：A
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