We have always been interested in the moon.2000 years ago people already knew it moved around the earth and where it would be in the sky at different times of the year.At that time，everything about the moon was learned by watching it carefully in the sky.
When scientists could use telescopes （望遠鏡）to study the moon more clearly，their ideas began to change.They could see that there were lots of rocks on the surface of the moon.Most scientists thought moon rocks would be different from those on Earth.This was because they believed the moon had once been a planet that had been caught in the earth's gravity millions of years earlier.
In 1969 moon rocks were finally brought to the earth and studied.Much to their surprise，scientists found that，except for water，the moon and the earth were made of the same things.Once again new ideas came out according to the new information.
After years of study，most scientists now think that the moon was once part of Earth.They believe very early in its history，maybe 4 million years ago，something about the size of Mars hit Earth.This sent billions of rocks into space around our planet.These rocks slowly joined together and at last became the moon.
In the future，our ideas about the moon may change again.However，we will still be interested in the moon.
| Scientists' （1） ideas ideas about the Moon |
|
| 2000 years ago | People already know the Moon moves around the Earth and it's in different places in the sky at different times of the year. People watched the Moon carefully to （2） learn learn about it. |
| When scientists could use telescopes | They（3） saw saw lots of rocks on the surface of the Moon.They believed there would be （4） different different between Moon rocks and the rocks on the Earth. |
| In1969 | Moon rocks were finally brought to the Earth for（5） study study .Scientists found that except for（6） water water ，the moon and the earth were made of the same things. |
| Now | Most scientists think that the Moon was once part of the（7） Earth Earth .It's （8） believed believed that 4 million years ago，something hit the Earth and billions of rocks were sent into space.Then the rocks slowly joined together and（9） finally finally the Moon formed. |
| In the future | （10） Changes Changes may take place in people's mind about the Moon again. |
【答案】ideas；learn；saw；different；study；water；Earth；believed；finally；Changes
【解答】
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發(fā)布：2024/6/27 10:35:59組卷：5引用：1難度：0.5
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D．Rules for watching some games.發(fā)布：2024/12/27 18:30:2組卷：11引用：4難度：0.5
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