The earth moves round the sun, and the moon moves round the earth. When our part of the earth turns__46__ the sun, it is day. When our part of the earth runs away __47__ the sun, it is __48__.

The sun is much __49__ than the moon. But sometimes the moon _50__ bigger than the sun, because it’s much __51_ to the earth.

The sun is very bright. It gives very __52__light. The moon looks quite bright, too, but it doesn’t give any light at all. The light __53_ the moon comes from the sun.

The moon looks much bigger and brighter than the stars, _54__ in fact the stars are much bigger and brighter than the moon. __55__ smaller than the moon because they are farther away from the earth.

完型填空。

　　The earth moves ________(1) the sun, and the moon moves round the earth. When our part of the earth turns to the sun, it is ________(2). When our part of the earth turns ________(3) from the sun, it is night.

　　The sun is much ________(4) than the moon. But sometimes the moon looks bigger than the sun, because it is much ________(5) to the earth.

　　The sun is very bright. It gives very ________(6) light. The moon looks quite bright, too, but it doesn't give any ________(7) at all. The light from the moon comes from the sun. The moon looks much bigger and ________(8) than the stars. But in ________(9) the stars are bigger and brighter than the moon. They look smaller than the moon because they are much ________(10) away from the earth.

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