Question

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(望远镜) 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(行星) that had been caught in the earth’s gravity（重力） 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（火星） 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.In the passage the writer wants to tell us ___________________.

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. we now know everything about the moon

D. new information brings new ideas

Answer

1.B

2.C

3.D

【解析】

试题分析：短文大意：在该文中作者告知人们关于月球的想法是怎样随着时间而改变的，人们一直对月球感兴趣。在未来，即使人们对月球的想法可能会改变，人们仍然会对它感兴趣。

1.B细节理解题。根据文章内容可知给作者是在告知人们关于月球的想法是怎样随着时间而改变的，所以选B。

2.C细节理解题。根据文章内容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.可知这是因为他们认为数百万年前月亮曾经是被地球的引力吸引的一颗行星，所以选C。

3.D细节理解题。根据文章内容In the future, even though our ideas about the moon may change again, we will still be interested in it.可知新的信息会带来新的想法，所以选D。

考点：科普类短文阅读。