用英回答问题who is the first man to leave earth and towho is the first man to leave earth and to fly aroubd it?when?

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用英回答问题who is the first man to leave earth and towho is the first man to leave earth and to fly aroubd it?when?
用英回答问题who is the first man to leave earth and to
who is the first man to leave earth and to fly aroubd it?when?

用英回答问题who is the first man to leave earth and towho is the first man to leave earth and to fly aroubd it?when?
April 16,1961,the former Soviet union "Oriental a number" manned spacecraft launched successfully,astronauts and add Lin become human history first to fly to the space.