It was on 12th April, 1961 when the first human, a Soviet cosmonaut, flew into space48/50Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. It was on 12th April, 1961 when the first human, a Soviet cosmonaut, flew into space.a Soviet cosmonautwhenflewinto spaceGiải thíchĐáp án A