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Every time when I look at the moon, I wish I could 1 . Do you wish you could fly to the moon 2 a spaceship one day?
For hundreds of years, men 3 to travel to the moon. When they looked at the moon, they asked many 4 . Was the moon hot 5 cold? Were there any plants or other 6 things there? There were many, many 7 questions. Some people said there were living plants on the moon. Others said 8 could live there because there was no air or water on the moon.
We know much 9 the moon now. Scientists have studied the moon for many years and have 10 many facts. Not long 11 spaceships 12 men in them flew to the moon.
What do we know about the moon? We find that the moon is much 13 than the earth. It is about one quarter the size 14 the earth. It is travelling 15 the earth 16 .
Days and nights on the moon are very long. One day on the moon is as long as two weeks on the earth. One night is also as long as two weeks on the earth. In the day the moon is very 17 . At night it is very cold. The moon is 18 hotter and much colder than the earth.
There is another 19 thing. On the moon things are not as 20 as they are on the earth. Isn't that interesting?
Perhaps one day we can all travel to the moon. It must be great fun.
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The moon looks bigger than the stars at night. But in fact, it is smaller than any of them. The moon looks big to us, because it is closer to us than any star. The moon goes around the earth. It makes one trip
（旅行）about four weeks. The moon is a round ball and looks beautiful. Don’t you think so? Now people know quite a lot about the moon. There is no air or water on the moon so there are not any trees or animals, or people on the moon. The moon gets its light from the sun, but some places on the moon are quite dark. The days on the moon get hotter than boiling（煮開的）water. The nights get colder than the North Pole（北極）on the earth.(1) People know quite ________ about the moon now.
[
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A ．a lot |
B ．a few |
|
C ．little |
D ．some |
(2) The moon is ________ to the earth than the sun.
[
]|
A ．farther |
B ．far |
|
C ．close |
D ．closer |
(3) The moon makes one trip round the earth in about ________.
[
]|
A ．a week |
B ．four weeks |
|
C ．a year |
D ．24 hours |
(4) There is ________ on the moon.
[
]|
A ．not anything |
B ．no river |
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C ．no hill |
D ．no air or water |
(5) The sun ________ to the moon.
[
]|
A ．gets light |
D ．gives light |
|
C ．gives air |
D ．gets air |
Maybe you know a lot about the city you live in. You may even know some interesting facts about Earth, but 16 do you know about Mars? Will there be 17 there just like people on Earth?
Mars is the fourth planet from the sun and it's the most like Earth, but it's much 18 than Earth because it's farther from the sun. It's also the only planet whose surface can be 19 from Earth.
Mars is often called "the red planet" because the rocks on it have a dark 20 color. There are strong winds on Mars that can 21 dust into the hills.
For many years, people have 22 Mars. They have sent instruments and robots there. Some of the robots got there, 23 most failed.
NASA(美國國家宇航局) sent two robots to Mars two years ago. They wanted to 24 signs of water and life on Mars. Some day, humans will travel to Mars and have an
even 25 look at our red neighbor. Maybe it could be you!
( )16. A. when 
B. what C. which D. how
( )17. A. sound B. life C. air D. water
( )18. A. hotter B. colder C. bigger D. smaller
( )19. A. seen B. wrote C. heard D. visited
( )20. A. red B. black C. white D. yellow
( )21. A. blow B. look C. mix D. fly
( )22. A. lived on B. landed on C. studied D. written
( )23. A. but B. and C. however D. or
( )24. A. leave B. use C. find D. give
( )25. A. faster B. farther C. closer D. lower
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