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Our nearest neighbor is the moon. In the sky, the moon and the sun seem to be of the same size because the moon is much nearer.
The moon makes the tides—the changes in the level of the sea. The moon and the sun together pull the sea. In some parts of the world, the difference between * high tide' (when the sea is very near to the land) and ' low tide' (when the sea is far away from the land) is very big. This is very important for ships.
The moon is very different from the Earth. Gravity on the moon is six times weaker than that on the Earth. There isn't any air. During the day, it is very, very hot but at night it is very, very cold. Nothing can live on the moon.
If the moon goes between the Earth and the sun, we have an eclipse of the sun(日食) . The moon stops the light from the sun and we have night in the day.
If the Earth goes between the moon and the sun, we have an eclipse of the moon. The moon goes into the shadow( 影子) of the Earth and it disappears for a few minutes.
【小题1】 The sun to the Earth is _________times farther than the moon to the Earth.
| A．nearly 200 | B．less than 300 | C．nearly 400 | D．more than 400 |
| A．the moon | B．the sun | C．the stars | D．the Earth |
| A．The Earth goes between the moon and the sun. |
| B．The moon goes into the shadow of the sun. |
| C．The moon goes into the shadow of its own. |
| D．The sun disappears for a few minutes. |
a. The moon and the sun are of the same size.
b. Gravity on the Earth is 6 times stronger than that on the moon.
c. The changes in the level of the sea are called tides.
d. The moon itself pulls the sea and makes the tides.
e. When the sea is near to the land, a high tide may happen.
f. It is much hotter in the day but much colder at night on the moon.
| A．a. b. c. f. | B．b. c. d. e | C．a. d. e. f | D．b. c. e. f |
The earth(地球)moves(移动)round the sun ,and the 36 moves round the earth. When our part of the earth turns(转) 37 the sun ,it is 38 .When our part of the earth turns 39 from the sun ,it’s Night.
The sun is 40 bigger than the moon. But sometimes the moon looks bigger than the sun , because it is much 41 to the earth.
The sun is very bright. It 42 very strong light. The moon looks quite bright, too, but it doesn’t give 43 light 44 .The light from the moon comes 45 the sun .
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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.
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The earth（地球）moves（移动）round the sun ,and the 1 moves round the earth. When our part of the earth turns（转） 2 the sun ,it is 3 .When our part of the earth turns 4 from the sun ,it’s night.
The sun is 5 bigger than the moon. But sometimes the moon looks bigger than the sun ,because it is much 6 to the earth.
The sun is very bright. It 7 very strong light. The moon looks quite bright, too, but it doesn’t give 8 light 9 .The light from the moon comes 10 the sun .
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We know 1 about the universe(宇宙). It means the earth, the sun, the moon, the stars, and the space 2 them.
Most of the stars are much 3 than the moon, but they look smaller 4 they are far away from the earth. At night, the moon is high in the sky 5 a light. But the moon has 6 light of its own. The light of the moon comes from the sun. The sun gives us light, heat and life. And the plants, animals and men will die 7 the sun.
The earth goes around itself 8 . When the part of the earth 9 to the sun, it is day. The 10 part of the earth is night.
The earth is our homeland. We should love it.
1. A．many B．a lot of C．much D．few
2. A．in B．between C．among D．with
3. A．farther B．nearer C．warmer D．bigger
4. A．because B．so C．but D．and
5. A．looks B．like C．looks like D．as
6. A．not B．no C．little D．less
7. A．with B．without C．in D．on
8. A．a long time B．in the daytime C．all the time D．take after time
9. A．turns B．gets C．points D．changes
10. A．front B．following C．opposite D．same
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