单项选择题

Apollo Program, is an American manned lunar-space program which is designed to land an astronaut on the moon and return him safely to earth, as well as to overtake the former Soviet Union in the race to dominate (统治；支配；控制) space exploration. The whole program was conducted between May 1961 and December 1972 by the National Aeronautics and Space Administration (NASA), and the program successfully landed Nell Armstrong--the first person to walk on the moon--and 11 other astronauts on the moon. The program included 12 manned missions: 2 into earth orbit (Apollo 7 and 9); 2 into lunar orbit (Apollo 8 and 10); 3 lunar landing missions (Apollo 11, 12, and 14); and 3 lunar exploration missions (Apollo 15, 16, and 17), which involved extended stays on the moon’s surface and more in depth scientific exploration.
The Apollo Program was started by United States President John F. Kennedy on May 25,1961. At the time of Apollo preparations in 1965. NASA employed 36.000 civil servants, 376,700 contractor employees, and a yearly operating budget (预算) of
5.2 billion. Between 1961 and 1973, NASA spent approximately
25.4 billion on the Apollo missions.
During the same period, the Soviet Union scheduled a manned mission to circle the moon--just three weeks before Apollo 8. This mission was postponed (延期) and the spacecraft was later launched unmanned. The Soviets continued to develop and test their one-man Lunar Lander spacecraft in the earth’s orbit through August 1971, but the Soviets never reached the moon.

In which year did the first man land on the moon（）

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