There ______ life on the earth for millions of years．
A．has B．has been C．have D．have been
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小学生10分钟应用题系列答案科目：初中英语 来源：2012-2013学年浙江省嘉兴市洪兴实验中学八年级10月月考英语试卷（带解析） 题型：完型填空
Scientists think that there has been life for__31_ of years. However we haven’t found life on other planets _32_ . The earth is a planet and it _33__ around the sun. Seven other planets also go _34_ the sun. The sun and its planets are __35 the solar system. The solar system is a small part of our galaxy.
Scientists __36_ lots of spacecraft to look at other planets in the solar system, and some spacecraft have gone __37_ the solar system. However, no one __38_ any life in space yet.
But why has no one from other planets sent us a message ? Have they tried to send _39_ to us ? _40_so many stars in the universe, are we alone, or is there life out there in space ? We don’t know.
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科目：初中英语 来源：2011-2012学年山东省聊城市阳谷县八年级上学期期中考试英语试题（带解析） 题型：阅读理解
根据学过的课文，判断正（T）误（F）
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 with air，so people and things cannot grow．The Sun and its planets are called the solar system．The solar system is a small part of our galaxy．
The stars we see at night are the suns in other solar systems．There are more than 200 billion stars in our galaxy，called the Milky Way，and our Sun is only one of them．
But scientists have discovered many other galaxies in the universe．They are a long way away and their light has travelled for many years to reach us．It is hard to understand how large the universe is．
Scientists have sent lots of spacecraft to look at other planets in our solar system，and some spacecraft have gong beyond the solar system．However，no one has discovered any life in space yet．
But why has no one from other planets sent us a message？Have they tried to send information to us？With so many stars in the universe，are we alone，or is there life out there in space？We don’t know．．．yet．
【小题1】The Sun is one of the Earth planets．
【小题2】There is more than one galaxy in our solar system．
【小题3】．There are more than 200 billion stars in the Milky Way．
【小题4】．Scientists have found life on other planets．
【小题5】They’ve received no messages from space．
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科目：初中英语 来源：2012-2013学年浙江省嘉兴市八年级10月月考英语试卷（解析版） 题型：完型填空
Scientists think that there has been life for__31_ of years. However we haven’t found life on other planets _32_ . The earth is a planet and it _33__ around the sun. Seven other planets also go _34_ the sun. The sun and its planets are __35 the solar system. The solar system is a small part of our galaxy.
Scientists __36_ lots of spacecraft to look at other planets in the solar system, and some spacecraft have gone __37_ the solar system. However, no one __38_ any life in space yet.
But why has no one from other planets sent us a message ? Have they tried to send _39_ to us ? _40_so many stars in the universe, are we alone, or is there life out there in space ? We don’t know.
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科目：初中英语 来源：2013届山东省聊城市阳谷县八年级上学期期中考试英语试题（解析版） 题型：阅读理解
根据学过的课文，判断正（T）误（F）
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 with air，so people and things cannot grow．The Sun and its planets are called the solar system．The solar system is a small part of our galaxy．
The stars we see at night are the suns in other solar systems．There are more than 200 billion stars in our galaxy，called the Milky Way，and our Sun is only one of them．
But scientists have discovered many other galaxies in the universe．They are a long way away and their light has travelled for many years to reach us．It is hard to understand how large the universe is．
Scientists have sent lots of spacecraft to look at other planets in our solar system，and some spacecraft have gong beyond the solar system．However，no one has discovered any life in space yet．
But why has no one from other planets sent us a message？Have they tried to send information to us？With so many stars in the universe，are we alone，or is there life out there in space？We don’t know．．．yet．
1.The Sun is one of the Earth planets．
2.There is more than one galaxy in our solar system．
3.．There are more than 200 billion stars in the Milky Way．
4.．Scientists have found life on other planets．
5.They’ve received no messages from space．
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科目：初中英语 来源： 题型：
Mars
Is there life on Mars? We don’t know．We’re sure that people like those on the earth don’t live on Mars．Earth people need oxygen to breathe．There is almost no oxygen on Mars．
Living on Mars would he like living on a very high mountain．There would be little air. It might be 50 degrees above zero at noon and l00 degrees below zero at night．Many people think there may be plants on Mars．We know that Mars has carbon(碳)．This is a kind of material found in all plants and animals on earth．Through a telescope，Mars looks red．In some places，it seems gray．At times the gray color turns gray—green，then gray again．The gray-green color may be a kind of plant life changing color with the seasons．
Will men go to Mars one day? If they do，they must take their own oxygen, food and clothing with them．
1．Why can’t people live on Mars? (回答问题)_______________________________
2．Living on Mars would be like living on a very high mountain(改为同义句)
________________________________________________________________________
3．The gray．green color may be a kind of plant life changing color with the seasons．(翻译成汉语)这种灰绿色_________________________________________________---
4．They must take their own oxygen，food and clothing with them(改为被动语态)
Their own oxygen，food，and clothing _________________________________with them．
5．The main idea of the story is that ________________________________on Mars(完成句子)
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