July 20, 1969 was an important day. Two Americans landed on the moon. They were the first men on the moon. Their names were Armstrong and Aldrin. They went in a spaceship. Its name was Apollo Ⅱ. Apollo II left Cape Dennedy（肯尼迪角，美国宇航中心）on July 16 and went on a 385 000-kilometer journey. The trip took three days. On July 20 the spaceship landed in the Sea of Tranquillity（宁静海）. Armstrong stepped on the moon first, then Aldrin stepped on it too. The two men walked on the surface of the moon. They picked up some rocks and put them in the spaceship. They jumped up and down. Then they put an American flag in the ground. They were tired after their moonwalk, so they rested for a short while. On July 21 Apollo Ⅱ left the moon and returned to the earth. Three days later it came down in the Pacific Ocean（太平洋）. A ship took the men back to America and then to their families.

A．385 kilometers

B．385,000 kilometers

C．3 million and 85 000 kilometers

A．They picked up some stones.

B．They jumped up and down.

C．They were trying to swim in the Sea of Tranquillity.

A．It’s just like what we do on the earth.

B．It’s far from what we do on the earth.

C．It’s like jumping and flying.

(5) When did Apollo Ⅱ return on earth?