We have always been interested in the Moon. 2000 years ago people already knew it
m1.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 c2.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 r3.. 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 g4.millions of years earlier.
In 1969 Moon rocks were finally brought to the Earth and s5.. Much to their surprise, scientists found that, except for water, the Moon and the Earth were made of the s6.things. Once again new ideas were needed for this new information.
After years of study, most scientists now think t7.the Moon was once part of the Earth. They believe very early in its history, maybe 4 billion (十亿) years ago, something about the size of Mars h8.the Earth. This sent billions of rocks into space around our
p9.. 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 i10.in it.
阅读下面的短文,根据文中信息完成文后表格。(每空一词)
Scientists think that there has been life on the Earth for hundreds of millions of years.
However, we have not found life on any other planet yet.
The Earth is a planet and it goes around the Sun. Seven other planets also go around the Sun. None of them has an environment like that of the Earth, so scientists think there may be no life on them. The Sun and its planets are called the solar system (太阳系), and our solar system is a small part of a much larger group of stars and planets, called the Galaxy or the Milky Way. There are many, many stars in the Galaxy, and our Sun is only one of them.
Scientists have also discovered many other galaxies in the universe (宇宙). They are very
far away and their light has to travel for many years to reach us. So how large is the universe? It is impossible to imagine.
Scientists have sent spaceships to the planet Mars to take photos. They have even sent spaceships to travel outside the solar system. However, no spaceship has travelled far enough to reach other stars in our Galaxy.
Scientists have always asked the questions: with so many stars in the universe, are we alone, or is there life out there in space? Have there been visitors to the Earth from other planets? Why has no one communicated with us? We do not know the answers yet.
Planets in our solar system | There are1.planets going around the Sun in our solar system. |
Life on the planet | No life has been found on other planets2.the Earth in the solar system because they have a3.environment from that on the Earth. |
The solar system | It is a small part of the Galaxy and the4.is only one star in it. |
Galaxies
| Besides our galaxy, many other galaxies in the universe have been 5..But they are very far away from us and it6. many years for their light to reach us. |
The universe | It is7.large to imagine. |
Spaceships | Spaceships have been sent to take photos of the planet 8.and outside the solar system.But other stars in our Galaxy are so far that no spaceships can9.to them. |
Questions | There are many questions about the universe and life in space,but no one can10.them yet. |
六、根据汉语意思完成句子(共10分,每小题2分)
1.因为人口迅速增加,我们需要更多的食品。
_____, we need more food.
2.欢迎以钱的形式进行资助。
Help____will be very welcome.
3.随着科技的发展,我们的生活将变得越来越好。
_____better and better.
4.小船正顺着河流漂走。
The boat____.
5.这本书也许没有我们想象得那么有趣。
This book____.
C) 根据句子意思,用括号中所给动词的适当形式填空。
1.The tea house is a good place for people____ (relax) after a week’s work.
2.Would you mind____ (open) the window?
3.She____ (pick) up the dictionary and began to look up the new word in it.
4.Great changes____ (take) place in my hometown over the past ten years.
5.We____ (wait) for the bus when a traffic accident happened.
B) 根据句子意思,用括号中所给单词的适当形式填空。
1.The____ (pollute) air and water are harmful to people’s health.
2.Is there any____ (possible) that you’ll be back by the weekend?
3.The bus was too____ (crowd) for us to get on.
4.There are some____ (risk) with this method, so certainly do not try this at home.
5.The machine has two serious____ (advantage), so we must find some ways to improve them.
A) 根据括号中所给的汉语写出单词,使句子意思完整正确。
1.The scientists are trying to find out whether there is life on other____ (行星).
2.He made such____ (迅速的) progress that his parents were very glad.
3.You are taking a _____ (风险) when driving so fast.
4.—Can you tell me the way to the train station?
—I’m sorry. I’m a____ (外地人) here myself.
5.The first____ (电子的) computer is called ENICA.