Question

We have always been interested in the moon.2000 years ago, people already knew that the moon moves 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 the 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 werefinally 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 the earth. They believe very early in its history, maybe 4 billion years ago, something about the size of Mars hit the 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 thought our ideas about the moon may change again, we will still be interested in it.

1.2000 years ago, people already knew_____.

A. the earth moved around the moon

B. the moon and the earth were made of the same things

C. the moon was made of rocks

D. the moon moves around the earth

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.After years of study, most scientists now think_____.

A. the earth was once part of the moon

B. the moon was once part of the earth

C. something about the size of Mars will hit earth in the near future

D. a lot of rocks will slowly join together to become the other moon

4.From this passage we can learn that_____.

A. scientists in the past were not clever

B. scientists are so clever that they know everything

C. new information brings new ideas

D. we now everything about the moon

 

Answer 1

1.D

2.C

3.B

4.C

【解析】

试题分析：我们一直对月亮感兴趣。在2，000年前，人们已经知道月亮绕着地球转。1969年，人类从月亮上带回了岩石。令他们惊讶的是，科学家们发现除了水，地球和月亮都是由同样的物质构成的。这个新的信息提供了新的想法。

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考点：科普知识类短文阅读。