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A black hole is created when a large star burns out. Like our sun, stars are unbelievably hot furnaces(熔炉)that burn their own matter as fuel. When most of the fuel is used up, the star begins to die.
The death of a star is not a quiet event. First there is a huge explosion. As its outer layer is blasted off into space, the dying star shines as brightly as a billion suns.
After the explosion gravity pulls in what's left of the star. As the outside of the star sinks toward the center, the star gets smaller and smaller. The material the star is made of becomes tightly packed together. A star is so dense that a teaspoon of matter from it weighs billion of pounds.
The more the star shrinks, the stronger the gravity inside it becomes. Soon the star is very tiny, and the gravity pulling it in is unbelievably strong. In fact, the gravity is so strong that it even pulls light into the star! Since all the light is pulled in, none can flee. The star becomes black when there is no light. Then a black hole is born!
That's what we know about black holes. What we don't know is this: What happens inside a black hole after the star has been squeezed into a tiny ball? Does it keep getting smaller and smaller forever? Such a possibility is hard to imagine.
But if the black hole doesn't keep shrinking, what happens to it? Some scientists think black holes are like doorways to another world. They say that as the star disappears from our universe, it goes into another universe. In other words a black hole in our universe could turn into a “white hole” in a different universe. As the black hole swallows light, the white hole shines brightly-somewhere else. But where? A different place, perhaps, or a different time-many years in the past or future.
Could you travel through a black hole? Right now, no. Nothing we know of could go into a black hole without being crushed. So far the time being, black holes must remain a mystery.
Black holes are a mystery-but that hasn't stopped scientists from dreaming about them. One scientist suggested that in the future we might make use of the power of black holes. They would supply all of Earth's energy needs, with plenty to spare. Another scientist wondered if a black hole could some day be used to swallow earthly waste-a sort of huge waste disposal(处理)in the sky!
1.When the star begins to die, .
A.there is no fuel left in it
B.its outer layer goes into space first
C.it will explode and then become smaller
D.it doesn't give off light any longer
2.Which of the following doesn't help produce a black hole?
A.The star becomes very tiny and dense.
B.The light can't go out of the star.
C.The gravity inside the star is very strong.
D.The dying star shines very brightly.
3.What can we know from the passage?
A.A star will blast and die when it lacks fuel to support its burning.
B.A black hole can swallow everything because it becomes smaller all the time.
C.Man can never travel through a black hole but can make use of its power.
D.Scientists have found that a black hole goes into another universe and becomes a white hole.
4.What's the best title for this passage?
A.A New Scientific Discovery: Black Holes
B.How Do Black Holes Come into Being?
C.What Are Black Holes?
D.Travel Through A Black Hole
高三英语阅读理解困难题查看答案及解析
-
A black hole is created when a large star burns out. Like our sun, stars are unbelievably hot furnaces (熔炉) that burn their own matter as fuel. When most of the fuel is used up, the star begins to die.
The death of a star is not a quiet event. First, there is a huge explosion. As its outer layer is blasted off into space, the dying star shines as brightly as a billion suns.
After the explosion, gravity pulls in what’s left of the star. As the outside of the star sinks toward the center, the star gets smaller and smaller. The material the star is made of becomes tightly packed together. A star is so dense that a teaspoon of matter from it weighs billion of pounds.
The more the star shrinks, the stronger the gravity inside it becomes. Soon the star is very tiny, and the gravity pulling it in is unbelievably strong. In fact, the gravity is so strong that it even pulls light into the star! Since all the light is pulled in, none can flee. The star becomes black when there is no light. Then a black hole is born!
That’s what we know about black holes. What we don’t know is this: What happens inside a black hole after the star has been squeezed into a tiny ball? Does it keep getting smaller and smaller forever? Such a possibility is hard to imagine.
But if the black hole doesn’t keep shrinking, what happens to it? Some scientists think black holes are like doorways to another world. They say that as the star disappears from our universe, it goes into another universe. In other words, a black hole in our universe could turn into a “white hole” in a different universe. As the black hole swallows light, the white hole shines brightly — somewhere else. But where? A different place, perhaps, or a different time — many years in the past or future.
Could you travel through a black hole? Right now, no. Nothing we know of could go into a black hole without being crushed. So far the time being, black holes must remain a mystery.
Black holes are a mystery — but that hasn’t stopped scientists from dreaming about them. One scientist suggested that in the future we might make sure of the power of black holes. They would supply all of Earth’s energy needs, with plenty to spare. Another scientist wondered if a black hole could someday be used to swallow earthly waste — a sort of huge waste disposal in the sky!
1.What do we know about stars in the universe?
A.When a star begins to die, there’s no fuel left in it.
B.After the explosion, a star gets as small as a teaspoon.
C.A star explodes when it dies and then becomes smaller and smaller.
D.A star gets smaller and smaller because the outer layer of a star sinks toward the center.
2.Which of the following doesn’t help produce a black hole?
A.The dying star shines very brightly. B.The light can’t go out of the star.
C.The gravity inside the star is very strong. D.The star becomes very tiny and dense.
3.What can we know from the passage?
A.A star will blast and die when it lacks fuel to support its burning.
B.Man can never travel through a black hole but can make use of its power.
C.A black hole can swallow everything because it becomes smaller all the time.
D.Scientists have found that a black hole goes into another universe and becomes a white hole.
4.What is the best title for the passage?
A.A New Scientific Discovery: Black Holes B.How Do Black Holes Come into Being?
C.What Are Black Holes? D.Travel Through A Black Hole
高三英语阅读理解困难题查看答案及解析
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1.What is true about the Milky Way?
A.There are only stars inside it.
B.There is a black hole at its center.
C.It’s the biggest spiral galaxy in the universe.
D.It takes 100,000 years to get there from Earth.
2.Which of the following is the main factor in categorizing galaxies?
A.Shape. B.Size.
C.Number of stars. D.Distance from the sun.
3.Which of the following galaxies can be classified as irregular?
A.Whale Galaxy — similar to the Milky Way both in size and shape.
B.Cygnus A (3C 405) Galaxy — the brightest egg shape we can observe.
C.Cigar Galaxy — long and narrow galaxy that looks like an ashy cloud.
D.Sunflower Galaxy — galaxy with multiple arms radiating from its bright core.
高三英语阅读理解中等难度题查看答案及解析
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A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.
Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.
The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.
Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.
When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.
1.The gravity of a black hole may become so strong that light cannot get out when ____________.
A. the star is going to die
B. special tools are used on it
C. other stars come close to it
D. it is seen from the space telescopes
2.According to the passage, which of the following is NOT true?
A. A black hole can be very tiny but extremely heavy.
B. The gravity of a black hole holds all light in its center.
C. Scientists observe high-energy light through their own eyes.
D. Some small black holes came into being as early as the universe.
3.The underlined word “galaxy” in Paragraph 5 means __________.
A. a black hole B. the Milky Way
C. a series of stars D. a planet near the earth
4.What does the last sentence in Paragraph 5 suggest?
A. Neither the sun nor the earth is as heavy as a black hole.
B. There is a supermassive black hole at the center of the Milky Way.
C. The supermassive black hole had existed before the Milky Way was formed.
D. There is a reason why the large black holes are called “supermassive”.
5.The last two paragraph mainly focus on the question of _________.
A. what a black hole is
B. how black holes form
C. how big black holes are
D. how scientists know about black holes
高三英语阅读理解中等难度题查看答案及解析
-
A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.
Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.
The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.
Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.
When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.
1.The gravity of a black hole may become so strong that light cannot get out when ____________.
A. the star is going to die
B. special tools are used on it
C. other stars come close to it
D. it is seen from the space telescopes
2.According to the passage, which of the following is NOT true?
A. A black hole can be very tiny but extremely heavy.
B. The gravity of a black hole holds all light in its center.
C. Scientists observe high-energy light through their own eyes.
D. Some small black holes came into being as early as the universe.
3.Which can be inferred from the passage?
A. Every galaxy must have a black hole.
B. A galaxy is the center of the universe.
C. A galaxy consists of a large group of stars and planets.
D. Earth’s galaxy is called the Milky Way.
4.What does the last sentence in Paragraph 5 suggest?
A. Neither the sun nor the earth is as heavy as a black hole.
B. There is only one supermassive black hole at the center of the Milky Way.
C. The supermassive black hole had existed before the Milky Way was formed.
D. There is a reason why the large black holes are called “supermassive”.
5.The last two paragraph mainly focus on the question of _________.
A. what a black hole is
B. how black holes form
C. how big black holes are
D. how scientists know about black holes
高三英语阅读理解中等难度题查看答案及解析
-
A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.
Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.
The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.
Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.
When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.
1. The gravity of a black hole may become so strong that light cannot get out when_.
A. the star is going to die
B. special tools are used on it
C. other stars come close to it
D. it is seen from the space telescopes
2.According to the passage, which of the following is NOT true?
A. A black hole can be very tiny but extremely heavy.
B. The gravity of a black hole holds all light in its center.
C. Scientists observe high-energy light through their own eyes.
D. Some small black holes came into being as early as the universe.
3.Which can be inferred from the passage?
A. Every galaxy must have a black hole.
B. A galaxy is the center of the universe.
C. A galaxy consists of a large group of stars and planets.
D. Earth’s galaxy is called the Milky Way.
4.What does the last sentence in Paragraph 5 suggest?
A. Neither the sun nor the earth is as heavy as a black hole.
B. There is only one supermassive black hole at the center of the Milky Way.
C. The supermassive black hole had existed before the Milky Way was formed.
D. There is a reason why the large black holes are called “supermassive”.
5.The last two paragraph mainly focus on the question of _________.
A. what a black hole is
B. how black holes form
C. how big black holes are
D. how scientists know about black holes
高三英语阅读理解中等难度题查看答案及解析
-
A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.
Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.
The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.
Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.
When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.
1. The gravity of a black hole may become so strong that light cannot get out when ____________.
A. the star is going to die
B. special tools are used on it
C. other stars come close to it
D. it is seen from the space telescopes
2. According to the passage, which of the following is NOT true?
A. A black hole can be very tiny but extremely heavy.
B. The gravity of a black hole holds all light in its center.
C. Scientists observe high-energy light through their own eyes.
D. Some small black holes came into being as early as the universe.
3. Which can be inferred from the passage?
A. Every galaxy must have a black hole.
B. A galaxy is the center of the universe.
C. A galaxy consists of a large group of stars and planets.
D. Earth’s galaxy is called the Milky Way.
4. What does the last sentence in Paragraph 5 suggest?
A. Neither the sun nor the earth is as heavy as a black hole.
B. There is only one supermassive black hole at the center of the Milky Way.
C. The supermassive black hole had existed before the Milky Way was formed.
D. There is a reason why the large black holes are called “supermassive”.
5. The last two paragraph mainly focus on the question of _________.
A. what a black hole is
B. how black holes form
C. how big black holes are
D. how scientists know about black holes
高三英语阅读理解中等难度题查看答案及解析
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A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.
Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.
The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.
Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.
When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.
1.The gravity of a black hole may become so strong that light cannot get out when ____________.
A. the star is going to die
B. special tools are used on it
C. other stars come close to it
D. it is seen from the space telescopes
2.According to the passage, which of the following is NOT true?
A. A black hole can be very tiny but extremely heavy.
B. The gravity of a black hole holds all light in its center.
C. Scientists observe high-energy light through their own eyes.
D. Some small black holes came into being as early as the universe.
3.Which can be inferred from the passage?
A. Every galaxy must have a black hole.
B. A galaxy is the center of the universe.
C. A galaxy consists of a large group of stars and planets.
D. Earth’s galaxy is called the Milky Way.
4.What does the last sentence in Paragraph 5 suggest?
A. Neither the sun nor the earth is as heavy as a black hole.
B. There is only one supermassive black hole at the center of the Milky Way.
C. The supermassive black hole had existed before the Milky Way was formed.
D. There is a reason why the large black holes are called “supermassive”.
65. The last two paragraph mainly focus on the question of _________.
A. what a black hole is
B. how black holes form
C. how big black holes are
D. how scientists know about black holes
高三英语阅读理解中等难度题查看答案及解析
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A friend indeed is a friend who won’t _____ on you when you are in need of help.
A.come out B.hold out C.break out D.run out
高三英语单项填空中等难度题查看答案及解析
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Pop idols are celebrities who burn brighter than regular stars. If a star is someone you can recognize on the street, an idol is someone who will cause a stir at a public appearance.
Without fans, an idol is just an ordinary person, like you and me. As Reese Witherspoon once said while announcing the Oscar for best make-up, movie stars look just like people in documentaries(纪录片) if you see them without make-up.
I was once invited to a private party where about half of the guests were stars and the other half entertainment reporters. Guess what? The good-looking ones were the reporters because they tend to be young, and they glow without make-up.
Some idols are born; some are made. Most idols are created by a machine called the entertainment industry. They may have some charms and talent, but not enough to become famous. They are the raw material out of which a star, or even an idol, is made. An army of behind-the-scenes assistants will hype(炒作) or even make up their virtues and hide their shortcomings.
Paris Hilton is the kind of star who possesses no real talent but yet is quite well-known. This is the result of endless hype. If you are thrust into the limelight often enough, you can become a celebrity without having any talent.
Television contest shows create a much fairer more transparent platform where young people can compete and showcase their talent. The soap opera is another platform for idol making. These drama
series are long, giving an actor much needed exposure. The actors and actresses are always well-lit, made up and beautifully dressed. Now all they need is some good dialogue from the scriptwriter(编 剧).
1.Which of the following statements agrees with the writer’s viewpoint?
A. Most idols are born.
B. The entertainment industry is more popular.
C. Many stars are often good looking
D. Pop idols are not as pretty as you think.
2.Why does the writer use the example of Paris Hilton?
A. To show that hype is an important element in making a star.
B. To indicate that Paris Hilton is very famous.
C. To prove a star often lacks talent.
D. To show a star is popular because of the acting skills.
3.What does the writer think of the television contest show?
A. More practical. B. More formal. C. More equal. D. More competitive.
高三英语阅读理解简单题查看答案及解析