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 go out. 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 hole 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!

When the star begins to die ______.

A. there is no fuel left in it                                B. its outer layer goes into space first

C. a huge explosion will happen                         D. it doesn’t give off light any longer

Which of the following doesn’t help produce a black hole?

A. The gravity inside the star is very strong.        B. The light can’t go out of the star.

C. The star becomes smaller and smaller             D. The dying star shines very brightly.

The black hole ______.

A. continues becoming smaller and smaller all the time

B. goes into another universe and becomes a white hole

C. can pull in everything we know of in the world

D. will appear at another place at a different time

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

A gentle breeze blew through Jennifer's hair. The golden red sun was setting. She was on the beach, looking up at the fiery (火红的) ball. She was amazed by its color, deep red in the middle, softly fading into yellow. She could hear nothing but the waves and the seagulls flying up above in the sky.    

The atmosphere relaxed her. After all she had been through, this was what she needed. "It's getting late," she thought, "I must go home. My parents will be wondering where I am."

She wondered how her parents would react, when she got home after the three days she was missing. She kept on walking, directing herself where she spent every summer holiday. The road was deserted. She walked slowly and silently. Just in a few hundred meters she would have been safe in her house.

It was really getting dark now. The sun had set a few minutes before and it was getting cold too. She wished she had her favorite sweater on: it kept her really warm. She imagined having it with her. This thought disappeared when she finally saw her front door. It seemed different. Nobody had taken care of the outside garden for a few days. She was shocked: her father was usually so strict about keeping everything clean and tidy, and now... It all seemed deserted. She couldn't understand what was going on.    

She entered the house. First, she went into the kitchen where she saw a note written by her father. It said: "Dear Ellen, there is some coffee ready. I went looking." Ellen was her mother but－where was she? On the right side of the hallway was her parents' room. She went in. Then she saw her. Her mother, lying on the bed, was sleeping. Her face looked so tired, as if she hadn't slept for days. She was really pale. Jennifer would have wanted to wake her up but she looked too tired. So Jennifer just fell asleep beside her. When Jennifer woke up, something was different－she wasn't in her mother's room and she wasn't wearing the old clothes she ran away in. She was in her cozy bed in her pajamas.     

It felt so good being back home. Suddenly she heard a voice, "Are you feeling better now, dear? You know you got us very, very scared."

Three days later Jennifer came back home      .

A. at sunrise         B. at sunset      C. at night              D. at midday

What does the underlined phrase "This thought" most probably mean?

A. The idea of going back home.           

B. Her anxiety about her parents.     

C. The feeling of being warm in her favorite sweater.     

D. The feeling of getting back home safely.

Her father didn't take care of the garden because      .

A. he was busy looking for her   

B. he had to look after his wife

C. he was not strict with his job        

D. he no longer enjoyed working in the garden

What can we infer from this passage?

A. In fact Jennifer's mother had been sick for days.     

B. As Jennifer walked towards home, she became increasingly scared.     

C. When she found the garden deserted, she realized she was wrong.     

D. Having experienced a lot outside, Jennifer felt home was safest for her.

There are still many things that Peter Cooke would like to try his hand at — paper-making and feather-work are on his list. For the moment, though, he will stick to the skill that he has been delighted to make perfect over the past ten years: making delicate and unusual objects out of shells.

As he leads me round his apartment showing me his work, he points to a pair of shell-covered ornaments(装饰品) above a fireplace. “I shan’t be at all bothered if people don’t buy them because I have got so used to them, and to me they’re lovely. I never meant to sell my work commercially. Some friends came to see me about five years ago and said, ‘You must have an exhibition — people ought to see these. We’ll talk to a man who owns an art gallery’”. The result was an exhibition in London, at which 70 per cent of the objects were sold. His second exhibition opened at the gallery yesterday. Considering the enormous prices the pieces command —around ￡2,000 for the ornaments — an empty space above the fireplace would seem a small sacrifice for Cooke to make.

There are 86 pieces in the exhibition, with prices starting at￡225 for a shell-flower in a crystal vase. Cooke insists that he has nothing to do with the prices and is cheerily open about their level: he claims there is nobody else in the world who produces work like his, and, as the gallery-owner told him, “Well, you’re going to stop one day and everybody will want your pieces because there won’t be any more.”

“I do wish, though,” says Cooke, “that I’d taken this up a lot earlier, because then I would have been able to produce really wonderful things — at least the potential would have been there. Although the ideas are still there and I’m doing the best I can now, I’m more limited physically than I was when I started.” Still, the work that he has managed to produce is a long way from the common shell constructions that can be found in seaside shops. “I have a miniature(微型的) mind,” he says, and this has resulted in boxes covered in thousands of tiny shells, little shaded pictures made from shells and baskets of astonishingly realistic flowers.?

Cooke’s quest(追求) for beautiful, and especially tiny, shells has taken him further than his Norfolk shore: to France, Thailand, Mexico, South Africa and the Philippines, to name but a few of the beaches where he has lain on his stomach and looked for beauties to bring home. He is insistent that he only collects dead shells and defends himself against people who write him letters accusing him of stripping the world’s beaches. “When I am collecting shells, I hear people’s great fat feet crunching(嘎吱嘎吱地踩) them up far faster than I can collect them; and the ones that are left, the sea breaks up. I would not dream of collecting shells with living creatures in them or diving for them, but once their occupants have left, why should I not collect them?” If one bases this argument on the amount of luggage that can be carried home by one man, the beauty of whose work is often greater than its natural parts, it becomes very convincing indeed.

What does the reader learn about Peter Cooke in the first paragraph?

A. He has produced hand-made objects in different materials.?

B. He hopes to work with other materials in the future.?

C. He has written about his love of making shell objects.?

D. He was praised for his shell objects many years ago. 

When mentioning the cost of his shell objects, Cooke ____.

       A. cleverly changes the subject.

       B. defends the prices charged for his work.

       C. says he has no idea why the level is so high.

       D. notes that his work will not always be so popular.

The “small sacrifice” in Paragraph 2 refers to _________.?

A. the loss of Cooke’s ornaments?          B. the display of Cooke’s ornaments?

C. the cost of keeping Cooke’s ornaments    D. the space required to store Cooke’s ornaments

What does Cooke regret about his work?

A. He is not as famous as he should have been.?B. He makes less money than he should make.

C. He is less imaginative than he used to be.?    D. He is not as skillful as he used to be. ?

What does the reader learn about Cooke's shell-collecting activities?

A. Not everyone approves of what he does.

B. Other methods might make his work easier.

C. Other tourists get in the way of his collecting.

D. Not all shells are the right size and shape for his work

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 go out. 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 hole 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!

When the star begins to die ______.

       A．there is no fuel left in it B．its outer layer goes into space first

       C．a huge explosion will happen        D．it doesn’t give off light any longer

Which of the following doesn’t help produce a black hole?

       A．The gravity inside the star is very strong.

       B．The light can’t go out of the star.

       C．The star becomes smaller and smaller

       D．The dying star shines very brightly.

The black hole ______.

       A．continues becoming smaller and smaller all the time

       B．goes into another universe and becomes a white hole

       C．can pull in everything we know of in the world

       D．will appear at another place at a different time

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

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 go out. 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 hole 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!

When the star begins to die ______.

A. there is no fuel left in it                                B. its outer layer goes into space first

C. a huge explosion will happen                         D. it doesn’t give off light any longer

Which of the following doesn’t help produce a black hole?

A. The gravity inside the star is very strong.        B. The light can’t go out of the star.

C. The star becomes smaller and smaller             D. The dying star shines very brightly.

The black hole ______.

A. continues becoming smaller and smaller all the time

B. goes into another universe and becomes a white hole

C. can pull in everything we know of in the world

D. will appear at another place at a different time

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