July 20th,1969 was an important day.Two Americans landed on the moon.Their names were Armstrong

July 20th,1969 was an important day.Two Americans landed on the moon.Their names were Armstrong
and aldrin.They went there by spaceship.Its name was Apollo 11.
Apollo 11 left Cape Kennedy on July 16th and went three hundred and eight-five thousand kilometers.It took
the two Americans three days to get there.On July 20th the spaceship landed in the Sea of Tranquility (宁静),
Armstrong first stepped onto the moon.The two men walked on the ground of the moon.They picked up some
stones and put them in the spaceship.They jumped up and down.They were tired after their moonwalk,so they
rested.
On July 21st Apollo 11 left the moon and returned to Earth.Three days later,it came down in the Pacific
Ocean (太平洋),A ship took the men to America.
56.The best title for this passage is___
A.Two Americans on the moom.B.Animportant day.C.On the Moom