听力原文： We have just climbed out of a spaceship onto the surface of the moon. Behind us is the ship, half in the sunlight and half in deep shadow. A few miles ahead is a wall of mountains towering against the black sky. And there, as though resting on the mountains, is a great ball of light, beautifully colored in blue and green and brown with a patch of dazzling white at the top. It is our faraway world —the earth. We take a step and rise like prize jumpers —up, float, and down again. Hopping carefully, we explore the valleys, the sloping crater walls, the shadowy crater floors. Not a sound can be heard —there is no air to carry sound, no wind there are no smells, no plants, no animals. There is nothing but rock and dust, blinding sunlight and cold black shadows. (37)