请阅读下列短文,在需要的地方填入适当的冠词,不需要的地方用/表示。 If you go out sometimes at _1_ night, you will see _2_ moon high up in _3_ sky. The moon is far away from the earth. But it is our _4_ nearest neighbour in _5_ space. In _6_ 1969 two Americans visited it by _7_ spaceship. It was one of _8_ most exciting moments of that year. The sky looks black from the moon and you’ll see the earth up in the sky. You will also see _9_ many starts. You can’t find any living things there. It’s too hot in _10_ day and too cold at night. And ther’s no air or _11_ water there. Nothing can live on it. It is difficult for _12_ us to walk on the moon than on the earth. If you throw _13_ ball, it would fly very far. It is _14_ interesting thing if you can travel to the moon in _15_ sapceship.