阅读短文.然后根据短文内容选择最佳答案. 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 t 题目和参考答案——青夏教育精英家教网—

阅读短文，然后根据短文内容选择最佳答案。

　　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 to study the moon more closely, their ideas began to change．They could see the moon was made of rocks．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(引力)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 were needed for this 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 after many years became the moon．

　　In the future, even though our ideas about the moon may change again, we will still be interested in it．

(1)

What does the writer want to tell us in the passage?
[　　]
A．	Why people are interested in the moon．
B．	How ideas about the moon have changed over time．
C．	Where the moon came from in the past．
D．	That people have finally learned the truth about the moon．

(2)

Before 1969 most scientists thought the moon was ________．
[　　]
A．	part of the earth billions of years earlier
B．	older than the earth
C．	a planet caught by the earth’s gravity
D．	made of the same things as the earth

(3)

From this passage we can learn that ________．
[　　]
A．	scientists in the past were not clever
B．	the earth was once part of the moon
C．	new information brings new ideas
D．	we now know everything about the moon

答案：1．B;2．C;3．C;

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