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

When a group of children politely stop a conversation with you, saying: “We have to go to work now,” you’re left feeling surprised and certainly uneasy. After all, this is the 1990s and the idea of children working is just unthinkable. That is, until you are told that they are all pupils of stage schools, and that the “work” they go off to is to go on the stage in a theatre.

　　Stage schools often act as agencies（代理机构）to supply children for stage and television work. More worthy of the name “stage school” are those few places where children attend full time, with a training for the theatre and a general education.

　　A visit to such schools will leave you in no doubt that the children enjoy themselves. After all, what lively children wouldn’t settle for spending only half the day doing ordinary school work, and acting, singing or dancing their way through the other half of the day?

　Then of course there are times for the children to make a name and make a little money in some big shows. Some stage schools give their children too much professional work at such a young age. But the law is very tight on the amount they can do. Those under 13 are limited to 40 days in the year; those over 13 to 80 days.

　The schools themselves admit that not all children will be successful in the profession for which they are being trained. So what happens to those who don’t make it? While all the leading schools say they place great importance on children getting good study results, the facts seem to suggest this is not always the case.

　People would stop feeling uneasy when realizing that the children they’re talking to________.

　　  A. attend a stage school　　　　  B. are going to the theatre

　　  C. have got some work to do 　　  D. love singing and dancing

　　 In the writer’s opinion, a good stage school should ________.

　　  A. produce star performers

　　  B. help pupils improve their study skills

　　  C. train pupils in language and performing arts

　　  D. provide a general education and stage training.

　“Professional work” as used in the text means ________.

　　  A. ordinary school work　　　　　  B. money-making performances

　　  C. stage training at school 　 　  D. acting, singing or dancing after class

　 Which of the following best describes how the writer feels about stage schools?

　　  A. He thinks highly of what they have to offer.　　　　

　　  B. He favours an early start in the training of performing arts.

　　  C. He feels uncomfortable about children putting on night shows.

　　  D. He doubts the standard of ordinary education they have reached.

——Where did you come across our chemistry teacher ?

------ It was in the supermarket ______ I purchased mooncakes.

A. that             B. which           C. where                D. when

When someone says, "Well, I guess I’ll have to go to face the music", it does not mean he is planning to go to a concert. It is something far less pleasant, like being called in by your boss to explain why you did this or that, and why you did not do this or that. Sour（剌耳的; 拙劣的）music, indeed, but it has to be faced.

The phrase “to face the music” is familiar to every American, young and old. It is at least 100 years old. Where did the expression come from?

The first information comes from the American writer James Fennimore Cooper. He said in 1851 that the expression was first used by actors while waiting in the wings to go on stage. After they got their cue（提示，暗示） to go on, they often said, "It’s time to go to face the music." And that is exactly what they did--- face the orchestra (管弦乐队) which was just below the stage.

An actor might be frightened or nervous as he moved on to the stage in front of the audience that might be friendly or perhaps unfriendly especially if he forgot his lines. But he had to go out. So, “to face the music" came to mean having to go through something, no matter how unpleasant the experience might be, because you knew you had no choice.

The other explanation comes from the army. Men had to face inspection(视 察)by their leader. The soldiers worried about how well they looked. Was their equipment clean--shiny enough to pass inspection? Still, the men had to go out, and face the music of the band, as well as the inspection. What else could they do?

According to the passage, the word “music" means________.

A．your boss’s criticism(批评)              B．your leader’s inspection

C．something unpleasant to be experienced    D．sour pop music

The phrase ‘to face the music" was first used by _______.

A．all the Americans       B．the American writer James Fennimore cooper

C．some American actors   D．the American orchestra

An actor might feel frightened or nervous when going on stage. One of the reasons is that ______.

A．his performance was not good at all

B．he might not remember what he should say on stage

C．he had to face the unfriendly audience

D．most of the audience might be his friends

to face the music" is also used to mean that soldiers were not willing _______.

A．to be examined about their equipment    B．to be found weak

C．to show themselves up in public         D．to be inspected by their leader

The passage is mainly about_______.

A．the meaning of the phrase ‘to face the music"  B．how to deal with something unpleasant

C．how to learn English phrase                D．how to go through difficulty