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How much do you know about Earth-the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let's look at some of them.
Where did water come from?
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid(小行星) from outer space that hit our planet. But this theory has not been confirmed because there is very little related evidence(相关证据)to be studied.
What's in the core(地核)?
Scientists used to study meteorites(陨石)as small examples of Earth, believing that Earth's core was made of iron and nickel(镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity if its core contained only iron and nickel. Today, scientists continue to bring forward different theories, but none have been confirmed.
How was the Moon born?
Scientists have found that the chemical compositions(成分)of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun(旋转)very fast and threw off enough molten(熔化的)rock to later from the Moon.
1.What's the story mainly about?
A.How Earth came into being. B.Where Earth's water came from.
C.How the Moon was formed. D.Unexplained mysteries about Earth.
2.What do we know about where water may come from?
A.Earth's water may come from ice that melted 4.5 billion years ago.
B.Earth's water may come from a small planet that hit Earth.
C.We don't know where water came from.
D.There is lots of evidence that tells us where water came from.
3.What does the underlined phrase "bring forward" in Paragraph 5 probably mean?
A.Check. B.Raise. C.Improve. D.Receive.
4.Which of the following is TURE according to the passage?
A.Scientists believed Earth's core was made of meteorites.
B.A study in the 1950s proved that Earth's core is made of iron and nickel.
C.The Moon and Earth are made of similar materials.
D.Three possibilities of where the Moon came from are mentioned.
九年级英语阅读单选中等难度题查看答案及解析
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How much do you know about Earth—the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles (谜) about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let’s look at some of them.
Where did water come from?
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid (小行星) from outer space that hit our planet. But this idea has not been confirmed (证明) because there is very little related evidence(相关证据) to be studied.
What’s in the core (地核)?
Scientists used to study meteorites (陨石) as small examples of Earth, believing that Earth’s core was made of iron and nickel (镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity (引力) if its core contained only iron and nickel. Today, scientists continue to bring forward different ideas, but none have been confirmed.
How was the moon born?
Scientists have found that the chemical compositions (成分) of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun (旋转) very fast and threw off enough molten (熔化的) rock to later form the Moon.
1.What’s the main idea of the passage?
A.How Earth came into being.
B.Where Earth’s water came from?
C.How the moon was formed?
D.Unexplained mysteries about Earth.
2.What do we know about where water may come from?
A.Earth’s water may come from ice that melted 4.5 billion years ago.
B.Earth’s water may come from a small planet that hit Earth.
C.We don’t know where water came from.
D.There is lots of evidence that tells us where water came from.
3.What does the underlined phrase “bring forward” in Paragraph 5 probably mean?
A.Check B.Raise
C.Improve D.Receive
4.Which of the following is TRUE according to the passage?
A.Scientists used to believe Earth’s core was made of meteorites.
B.A study in the 1950s proved that Earth’s core is made of iron and nickel.
C.The moon and Earth are made of similar materials.
D.Three possibilities of where the Moon came from are mentioned.
九年级英语阅读单选中等难度题查看答案及解析
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______ there any living things on other planets？
I have no ideas．Maybe we can know more about that in the future．（ ）
A．Is B．Are
C．Has D．Have
九年级英语单项填空中等难度题查看答案及解析
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阅读下面的短文并用英语回答问题，并将答案写在答题卡上标有题号的横线上。
How much do you know about "Taobao"? Do you often buy goods(商品)online? During every big festival hundreds of millions of dollars is spent online. "Who needs a shopping mall if you have Taobao? I am a Taobaoer，" says Wang Fang, 28, a writer in Beijing. Taobao, China's largest online shopping site(场所)，has become an important part of Wang Fang's life. Half of her salary(薪水)is usually spent on Taobao.
A growing number of Chinese Internet users like Wang have found the pleasure of online shopping. Most online shoppers are students and young workers. People can find almost everything they need online, from clothes to books, from candy to DVD players. And clothing and household(家用的)products are the most popular goods bought online.
The biggest attraction for buyers is the low prices of online goods. Buyers can also check the information easily. They can compare the prices of the same kind of goods from different sellers, and choose the cheapest one. When someone asks her about the safety of online shopping, Wang Fang said ,"It's very safe and easy. If you can't receive the goods from the sellers or are not satisfied with them, the shop owners will not get the money. You can also get your money back if you give the goods back. "
1.How much does Wang Fang spend on shopping online?
2.What do people like to choose online best?
3.Do you like doing some shopping on Taobao? Why or why not?
九年级英语任务型阅读困难题查看答案及解析
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阅读下面的短文并用英语回答问题，并将答案写在答题卡上标有题号的横线上。
How much do you know about "Taobao"? Do you often buy goods(商品)online? During every big festival hundreds of millions of dollars is spent online. "Who needs a shopping mall if you have Taobao? I am a Taobaoer，" says Wang Fang, 28, a writer in Beijing. Taobao, China's largest online shopping site(场所)，has become an important part of Wang Fang's life. Half of her salary(薪水)is usually spent on Taobao.
A growing number of Chinese Internet users like Wang have found the pleasure of online shopping. Most online shoppers are students and young workers. People can find almost everything they need online, from clothes to books, from candy to DVD players. And clothing and household(家用的)products are the most popular goods bought online.
The biggest attraction for buyers is the low prices of online goods. Buyers can also check the information easily. They can compare the prices of the same kind of goods from different sellers, and choose the cheapest one. When someone asks her about the safety of online shopping, Wang Fang said ,"It's very safe and easy. If you can't receive the goods from the sellers or are not satisfied with them, the shop owners will not get the money. You can also get your money back if you give the goods back. "
1.How much does Wang Fang spend on shopping online?
______________________________
2.What do people like to choose online best?
__________________________________
3.Do you like doing some shopping on Taobao? Why or why not?
______________________________________
九年级英语回答问题困难题查看答案及解析
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How much do you know about Albert Einstein?
Albert Einstein, born on March 14, 1579 in Germany, was a great scientist in the world. He was strange because he hated haircuts and new clothes. He believed in peace. All his life, he hated war. However, his most famous idea, E＝mc2, helped create the world's most dangerous weapon(武器). Many people think he was the smartest person in the world. But Einstein said that he thought like a child with many questions and unusual ideas.
What did he like?
Einstein liked learning sailing(帆船运动). He sailed in small boats all his life. He once joked, “Sailing is the sport that takes the least energy！”
When Einstein was a child, his mother made him take violin lessons. At first, he didn't like the violin. But then he learned to love music and became a good violinist. Later, he said, “Love is the best teacher.”
Why is the sky blue?
In 1910, Einstein asked a question which many children often ask, “Why is the sky blue？” After his careful research, he answered the question like this: “It's because light is made up of many colors including blue. When light travels to Earth, gas particles(气体微粒)spread the blue light all over the sky.” His answer is true in physics.
1. The underlined part actually shows Albert Einstein was a/an________ person.
A. clever B. imaginative C. childlike D. energetic
2.Einstein________ learning sailing and playing the violin.
A. was interested in B. looked forward to
C. was known for D. had no interest in
3.From Paragraph 3 we know that________．
A. mother teaches the best
B. without mother's push, we can't love anything
C. interesting is the best teacher
D. when we love something, we'd like to learn about it
4. Einstein offered a________ explanation for the question why the sky is blue.
A. magic B. scientific C. careful D. Natural
九年级英语阅读理解中等难度题查看答案及解析
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How much do you know about Albert Einstein?
Albert Einstein, born on March 14, 1879 in Germany, was a great scientist in the world. He was strange because he hated haircuts and new clothes. He believed in peace. All his life, he hated war. However, his most famous idea, E = mc², helped create the world’s most dangerous weapon (武器). Many people think he was the smartest person in the world. But Einstein said that he thought like a child with many questions and unusual ideas.
What did he like?
Einstein liked learning sailing. He sailed in small boats all his life. He once joked, “Sailing is the sport that takes the least energy!”
When Einstein was a child, his mother made him take violin lessons. At first, he didn’t like the violin. But then he learned to love music and became a good violinist. Later, he said, “Love is the best teacher.”
Why is the sky blue?
In 1910, Einstein asked a question which many children often ask, “Why is the sky blue?” After his careful research, he answered the question like this： “It’s because light is made up of many colors including blue. When light travels to Earth, gas particles(气体微粒) spread the blue light all over the sky.” His answer is true in physics.
1.According to the passage, Albert Einstein __________ haircuts and new clothes.
A. forgot B. minded C. liked D. disliked
2.The underlined part actually shows Albert Einstein was a/an __________ person.
A. clever B. imaginative
C. practical D. childlike
3.Einstein ______________ learning sailing and playing the violin.
A. was interested in B. looked forward to
C. was known for D. was bored with
4.From Paragraph 3 we know that ______________.
A. mother teaches the best
B. without mother’s push, we can’t love anything
C. we should love our teacher
D. when we love something, we’d like to learn about it
5. Einstein offered a __________ explanation for the question why the sky is blue.
A. magic B. wise
C. scientific D. Careful
九年级英语阅读理解中等难度题查看答案及解析
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A：Dad，how much do you know about China?
B： 1. China is a big country that has about 5，000 years of history. It attracts many tourists from all over the world every year.
A：Is that so? 2.
B：Yes. And many of them are famous，such as Mount Tai，Mount Huang and Mount Emei.
A： 3.
B：There are many rivers in China. Among them the Yangtze River is the longest one and the second longest one is the Yellow River. 4.
A：Anything else?
B：Sorry. That’s all I know. If you want to learn more，you can read Guide to China. 5.
A：Thanks. I’ll read it.
A. Just a little.
B. What about rivers？
C. I don’t know it at all.
D. Are there any beautiful mountains？
E. They’re the birthplaces of Chinese culture.
F. It’s a book which introduces China in detail.
九年级英语补全对话7选5简单题查看答案及解析
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We live in the computer age. People use computers to do much of their work. But few people know how to look after them. Remember the following when you use your computer:
1.Keep your computer in a cool, dry room. Too much or too little heat is bad for computers. Damp(潮湿) is also bad for them.
2.Do not let people smoke near your computer. Smoke of all kinds is very bad for many parts of a computer.
3.Do not eat or drink when you are near your computer. Pieces of food and a little water in the keyboard are also bad for a computer.
4.Keep your screen clean and do not have it too bright. They are bad for your eyes. Make sure the screen is not too far from or too near your eyes. Some people use different glasses to protect their eyes when they use a computer.
1.Computers can ________ people to do a lot of work.
A.use B.help C. make D.take
2.Few people know how to ________ their computers.
A.look at B.try out C.look for D.take care of
3.A computer works well at a temperature of ________.
A.0℃ B.-5℃ C.20℃ D.35℃
4.Smoke is not good for many parts of a computer, is it?
A.Yes,it is. B.No,it isn't. C.Yes,a little. D.Not at all.
5.A dirty screen or a very bright screen is ________ for your eyes.
A.bad B.good C.useful D.helpful
九年级英语阅读理解简单题查看答案及解析
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You without doubt sleep every day, but do you have a dream every night? How much do you know about dreaming? “Sleep are than dream. We all need to dream.” some scientists say.
Dreams take up about one quarter of our sleeping time. People have several dreams every night. Dreams are like short films. They are usually in color. Some dreams are like old films. They come to us over and over again. That because the dreamer is worrying about something. Sometimes dreaming is a way of trying to find an answer.
Some people get about their work from dreams. They may have been thinking about their work all day. These thoughts can carry into dreams.
Sometimes we with a good feeling from a dream. But often we can’t remember the dream.Dreams can disappear quickly from memory.
__ dreaming can be harmful. The more we sleep, the longer we dream. The mind is hard at work when we dream. That is why we may have a long sleep and still feel tired.
1.A. important B. less important C. dangerous D. more dangerous
2.A. may be B. maybe C. can’t be D. must do
3.A. bad experience B. bad examples C. new ideas D. new articles
4.A. wake up B. fall asleep C. care about D.drop by
5.A. So many B. Too many C. Much too D. Too much
九年级英语完形填空困难题查看答案及解析