We know the moon is about 380,000 kilometres away from the earth．It is 1 moving．And it is moving round the earth day and night．It goes round once a 2 ,or to be exact(准确的),once 29 and a half days．
The moon looks smaller than the sun．It looks the 3 biggest in the sky．But in fact it is one of the smallest．It is 4 us,so it looks big．
Once 29 and a half days,the whole moon looks 5 and this is the part turning to the sun．The part turning away 6 the sun looks dark．From this we know the moon has no light of its own．The light 7 the sun．
But the dark part of the moon is not 8 ．Usually we can just see it．We see the old moon in the new moon's 9 ．The light making us see the old moon does not come from the sun, 10 from the earth．We all know water or 11 may reflect(反射)much of the sun's light．The whole earth reflects much of the sun's light to the 12 of the moon．So we can 13 the dark part of it．
14 there were any men on the moon,they would see our earth reflecting the light of the sun,again 15 a big mirror(镜子)in the sky．
One day a donkey and his owner were walking down the road．They met a 1 on the road．The traveler wanted to hire(雇佣)the donkey, the owner agreed to have the donkey 2 the man to the next village．
The traveler climbed up on the donkey and they 3 ．The day was 4 and about half way, they decided to 5 ．The only shadow(阴影)they could find was 6 the donkey．
Both men tried to rest under the donkey but there was not enough 7 ．“I should be the one 8 under the donkey,” the traveler said．“I paid for a ride on the donkey．”
“No,” said the owner．“You paid to ride on the donkey, not to sit under the donkey．The donkey's shadow is 9 ．
Then they 10 on and on．The donkey 11 listening to them and went off．When the men finally stopped arguing, they found 12 the donkey and his shadow were both 13 ．Now there was no donkey and there was no 14 ．
The traveler asked half of his money back and then had to walk on his own to the next village．The owner of the donkey had to spend hours walking around in the sun and 15 his lost donkey．
The earth moves round the sun, and the moon moves round the earth. When our part 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 very strong light. The moon looks quite bright too, but is doesn't give any light at all(根本). The light from the moon comes from the sun.
The moon looks much bigger and brighter than the other stars. But in fact(实际上) many stars are much bigger and brighter than the moon. They look smaller than the moon because they are farther away from the earth.
(1)
When our part of the earth in China turns to the sun, it is ______ in America.
A.day B.night C.sunny D.cloudy
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(2)
Sometimes the moon looks bigger than the sun because ______ .
A.it's really big
B.it's much nearer to the earth
C.it comes out at night
D.it's quite bright
[ ]
(3)
The moon isn't the biggest among (在……中间) the stars, is it?
A.Yes, it is.
B.No, it isn't.
C.Yes, it isn't.
D.No, it is.
[ ]
(4)
Which is the most important to us?
A.The sun.
B.The moon.
C.The stars.
D.None of the above.
[ ]
(5)
Which of the following sentences is right?
A.The moon moves round the sun and the earth.
B.The sun is much nearer to us than the moon.
C.When our part of the earth turns away from the sun, it is daytime.