题目列表(包括答案和解析)
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 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
A week ago, I had the great pleasure of reading an e-book, When Money Talks, Listen! By Rich Ezzo.It took only about an hour to read.
When I first received a copy, I thought it was a Get Rich Quick type of publication.Nothing is wrong with Get Rich Quick, but my mind just doesn’t chase after dreams of wealth.I think that if God ever wants me to be rich, he knows where to find my purse.
When I began reading When Money Talks, Listen!, I was overjoyed to find that Rich Ezzo isn’t money hungry either.He, too, is hungry far more important than money.
Since I love this e-book so much, why wait a week to write the review? Simple.I wanted to see if the effect it had on me was a keeper.After reading the last word of the e-book, I totally agreed with the subtitle which promised to forever change the way we thought about money.I had so many thoughts running around my mind that I had to install(安装) a stoplight to stop some while others made their way into the picture, then I yielded(让路) them as a few ones arrived in town.I had a mental traffic jam, which only goes to show how slow the traffic usually is.
It has been a week and the effect is the same.I truly do look at money differently and have even done a few things differently this week.This is an e-book you’ll want to read, I promise.I often recommend books to my daughter, and this is one that I didn’t just “suggest”---I left it open at the bottom of the computer and told each one, “Read it, you’ll love it.”
I would never point someone in a direction I wouldn’t go myself.I urge you to visit the author’s website, Myster Money, and to download the e-book.You won’t regret it.
The author wrote this passage to _________
A.strongly recommend an e-book.
B.show the author's attitude to money.
C.introduce the general idea of an e-book.
D.point out Rich Ezzo isn't money hungry.
According to the passage, a Get Rich Quick type of publication ______.
A.is what the author really cares for
B.deals with how to make money
C.is also an e-book written by Rich Ezzo
D.is more popular than e-books
The author didn't write the review as soon as he finished reading the book because________.
A.he was too excited to write anything
B.he was not sure whether he did well
C.he had to wait for Rich Ezzo's permission
D.he wondered if the book would have long influence on him
By saying the underlined sentence in Paragraph 4, the author probably __________.
A.shows that the book brought him many new thoughts
B.shows how bad the traffic is in town
C.describes the difficulty in understanding the book
D.explains it's hard to change one's attitude to money
Which of the following is supported by the passage?
A.The author had known Rich Ezzo before.
B.The author hasn't dreamed of getting rich immediately.
C.The author always prefers e-books to paper books.
D.The author likes Get Rich Quick-type of publications.
A severely handicapped teenager who cannot walk,talk or hold a paintbrush has won a place at Oxford to study fine art.
Hero Joy Nightingale,16,who communicates through hand movements,is to be given assistants to paint and sculpt on her behalf.Her mother Pauline Reid “translated for” her daughter during interviews for the place at Magdalen College.
The teenager is the most severely handicapped student ever to be granted a place at Oxford.She suffers from “locked-in syndrome”,a profound apraxia caused by brain damage that renders her body useless and her voice mute.
She is unlikely ever to be able to walk,feed or care for herself but,thanks to the efforts of her mother,she can communicate.When Hero was four,Pauline devised a complicated system of hand gestures that equate to the alphabet.
A spokesperson for Oxford said,“The university welcomes applications from students with disabilities.In cases where students are profoundly disabled,there may be many issues that need to be carefully addressed before an individual can take up a place,such as establishing how the student can best be taught and examined.”
Hero,who suffers almost daily epileptic fits and has a hole in her heart,has not attended school since she was six.She has been taught at home by her mother and father,the pro-vice chancellor of Kent University.
Peter Giles,her art tutor until last year,said she has a genuine talent for art.“She is ferociously gifted.We would sit together and her mother would grab her daughter’s hand and then we would begin work,”he said.
Together,they built several modern sculptures from plaster and metal.“The instructions would take a while to decipher.But eventually,they would come,and eventually make sense.”
Hero’s classes will be held at the Ruskin School of Drawing and Fine Art.
Hero communicates with others _________.
A.through common hand movements
B.by typing words on computer
C.through a complicated system of hand gestures devised by her mother
D.by drawing pictures on a board
According to the passage,how does Hero paint or sculpt?
A.She instructs her assistants to paint or sculpt through hand movements.
B.She gives instructions,and her mother paints or sculpts following her instructions.
C.She paints or sculpts with her own hands.
D.She gives instructions,her mother “translates” them,and her assistants paint or sculpt according to the “translations”.
From the story we can infer _________.
A.Oxford welcomes any handicapped student who is good at fine art
B.Hero has not attended school since she was six
C.Hero is gifted in fine art
D.Hero is a strong-minded girl who loves life very much
Which of the following is NOT true?
A.Hero is the most seriously handicapped student ever to be admitted to Oxford.
B.Oxford will admit a disabled student without any requirements.
C.Hero has been taught by her parents at home for10 years.
D.Hero is not able to walk,talk or hold a paintbrush.
A press report stating that Microsoft has restarted talks to buy Yahoo's search business for 20 billion U. S. dollars. "It has no basis in fact," the San Francisco Chronicle said on Monday.
The Times of London reported on Sunday that the deal under discussion would put former AOL CEO Jonathan Miller and Ross Levinsohn, a former president of Fox Interactive Media, in charge of Yahoo. The report also said executives (管理人员) at both companies had agreed to the broad terms of a deal.
In fact, there are no current talks between the two companies. The Chronicle quoted an executive at one of the firms who requested his name to be kept secret as saying. Furthermore, the 20-billion-dollar price mentioned in the Times of London article for Yahoo's search business appears questionable given that the market capitalization (资本总额) for all of Yahoo is 16 billion dollars, said The Chronicle.
Yahoo and Microsoft had had on-again, off-again talks over several months earlier this year about a 47. 5-billion-dollar takeover, and later a proposal focused only on Yahoo's search business. Discussions regarding both plans collapsed without an agreement.
Microsoft CEO Steve Ballmer has said repeatedly that he is no longer interested in buying all of Yahoo, but that he is open to some sort of partnership involving their respective search businesses.
Brad Williams, a Yahoo spokesman, said Sunday "We don't comment on rumors." Frank Shaw, a Microsoft spokesman, declined to comment.
Yahoo's shares have plummeted since Microsoft withdrew its 33-dollar-a-share acquisition offer earlier this year, leaving people to think that discussions would eventually be restarted. Yahoo's shares closed Friday at 11. 51 dollars, nearly one-third of the original offer.
1. From this passage, we can know that ______.
A. Microsoft has given up buying all of Yahoo but its search business
B. Microsoft has already taken over the whole company of Yahoo
C. the market capitalization for all of Yahoo is over $ 20 billion
D. the market capitalization for all of Microsoft is only $ 6 billion
2. What is the author trying to convince readers of in the third paragraph?
A. Yahoo and Microsoft are talking about takeover.
B. Microsoft is buying Yahoo’s search businesses for $ 20 billion.
C. Yahoo would like to sell its search businesses to another company.
D. There are no current talks between Yahoo and Microsoft.
3. What does the underlined word “plummet” in the passage most probably mean?
A. develop rapidly B. increase quickly C. fall quickly D. keep balanced
4. You can find this passage most probably in ______ .
A. an entertainment website B. an economical newspaper
C. a sports magazine D. a biological dictionary
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