The sun, the moon and the stars(星星)are all in the sky． We see the moon and the stars at night． The sun is a ball． It’s much bigger than the moon． It gives us heat(热量)．The sun has a family． It’s the biggest member of the family． The moon is a ball, too, like the sun and the earth． Sometimes it looks as round as a plate(盘子)．Sometimes it looks half a plate． It looks bigger because it’s much nearer to the earth． It’s much smaller than the sun． It’s smaller than the stars． The light on the moon comes from the sun． It has no light of its own．
The stars look smaller than the sun． They look small because they are very far away from us． All day the stars are in the sky． But the light from the sun is too bright． We can’t see the stars in the day．
【小题1】The sun, the moon and the stars are in the sky．
【小题2】 The moon is bigger than the stars．
【小题3】 The moon has its own light(光)．
【小题4】 The sun, the moon and the stars give us light and heat．
【小题5】The earth is one of the planets(行星)．

The sun, the moon and the stars(星星)are all in the sky． We see the moon and the stars at night． The sun is a ball． It’s much bigger than the moon． It gives us heat(热量)．The sun has a family． It’s the biggest member of the family． The moon is a ball, too, like the sun and the earth． Sometimes it looks as round as a plate(盘子)．Sometimes it looks half a plate． It looks bigger because it’s much nearer to the earth． It’s much smaller than the sun． It’s smaller than the stars． The light on the moon comes from the sun． It has no light of its own．

The stars look smaller than the sun． They look small because they are very far away from us． All day the stars are in the sky． But the light from the sun is too bright． We can’t see the stars in the day．

1.The sun, the moon and the stars are in the sky．

2. The moon is bigger than the stars．

3. The moon has its own light(光)．

4. The sun, the moon and the stars give us light and heat．

5.The earth is one of the planets(行星)．

The earth moves round the sun ,and the moon goes round the earth .When our part（部分）of the earth turns to the sun ,it is day ,When our part of the earth turns away from the sun ,it is night. The sun is much bigger than the moon .But sometimes the moon looks bigger than the sun, because it's much nearer to the earth. The sun is very bright .It gives a very strong light .The moon looks quite bright, too .But it doesn't give any light at all. The moon looks much bigger and brighter than the stars .But actually（事实上）, the stars are much bigger and brighter than the moon .They look smaller than the moon because they're much farther away from us.

1.Sometimes the moon looks bigger than the sun, because______.

2.The stars ______.

3.When it is day, _______.