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 un-believably 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 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! 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 |
The author mainly intended to tell us __________.
| A．New Scientific Discovery ： Black Holes |
| B．How Black Holes Came Into Being |
| C．What Black Holes Are |
| D．Travel Through A Black Hole |
D
The term “multitasking” originally referred to a computer’s ability to carry out several tasks at one time. For many people, multitasking has become a way of life and even a key to success. In fact, some excellent mental aerobic exercises (大脑训练) involve engaging the brain in two or more challenging activities at a time. Although checking e-mail while talking on a phone and reading the newspaper may be second nature for some people, many times multitasking can make us less productive, rather than more. And studies show that too much multitasking can lead to increased stress, anxiety and memory loss.
In order to multitask, the brain uses an area known as the prefrontal cortex (前额叶脑皮层). Brian scans of volunteers performing multiple tasks together show that as they shift from task to task, this front part of the brain actually takes a moment of rest between tasks. You may have experienced a prefrontal cortex “moment of rest” yourself if you’ve ever dialed (拨电话) a phone number and suddenly forgotten who you dialed when the line is answered. What probably occurred is that between the dialing and the answering, your mind shifted to anther thought or task, and then took that “moment” to come back. Research has also shown that for many volunteers, job efficiency (效率) declines while multitasking, as compared to when they perform only one task at a time.
Multitasking is easiest when at least one of the tasks is habitual, or requires little thought. Most people don’t find it difficult to eat and read the newspaper at the same time. However, when two or more attention-requiring tasks are attempted at one time, people sometimes make mistakes.
We often don’t remember things as well when we’re trying to manage several details at the same time. Without mental focus, we may not pay enough attention to new information coming in, so it never makes it into our memory stores. That is one of the main reasons we forget people’s names---even sometimes right after they have introduced themselves. Multitasking can also affect our relationships. If someone checks their e-mail while on the phone with a friend, they may come off as absent-minded or disinterested. It can also cause that person to miss or overlook key information being passed on to them.
68. Why are some mental aerobic exercises designed to engage people in multitasking?
A. To make them more productive. B. To reduce their stress and anxiety.
C. To develop their communication skills. D. To help them perform daily tasks more easily.
69. According to Paragraph 2, why may a person suddenly forget who has called?
A. He may leave his prefrontal cortex temporarily damaged.
B. He is probably interrupted by another task.
C. He is probably not very familiar with the person he has called.
D. He may need a rest between dialing and speaking.
70. People tend to make mistake when ____.
A. they perform several challenging tasks at a time.
B. new messages are processed one after another
C. their relationships with others are affected
D. the tasks require little thought
71. What is the main idea of the passage?
A. Multitasking has become a way of life.
B. Multitasking often leads to efficiency decline.
C. Multitasking exercises need to be improved.
D. Multitasking enables people to remember things better.
C
It is hardly surprising that clothing manufacturers(生产商) follow certain uniform standards for various features(特征) of clothes. What seems strange, however, is that the standard adopted for women is the opposite of the one for men. Take a look at the way your clothes button. Men’s clothes tend to button from the right, and women’s form the left. Considering most of the word’s population----men and women----are right-handed, the men’s standard would appear to make more sense for women. So why do women’s clothes button from the left?
History really seems to matter here. Buttons first appeared only on the clothes of the rich in the 17th century, when rich women were dressed by servants. For the mostly right-handed servants, having women’s shirts button from the left would be easier. On the other hand, having men’s shirts button form the right made sense, too. Most men dressed themselves, and a sword drawn from the left with the right hand would be less likely to get caught in the shirt.
Today women are seldom dressed by servants, but buttoning form the left is still the standard for them. Is it interesting? Actually, a standard, once set, resists change. At a time when all women’s shirts buttoned form the left, it would have been risky for any single manufacturer to offer women’s shirts that buttoned from the right. After all, women had grown so used to shirts which buttoned from the left and would have to develop new habits and skills to switch. Besides, some women might have found it socially awkward to appear in public wearing shirts that buttoned from the right, since anyone who noticed that would believe they were wearing men’s shirts.
64. What is surprising about the standard of the clothing industry?
A. It has been followed by the industry for over 400 years.
B. It is different for men’s clothing and women’s.
C. It woks better with men than with women.
D. It fails to consider right-handed people.
65. What do we know about the rich men in the 17th century?
A. They tended to wear clothes without buttons.
B. They were interested in the historical matters.
C. They were mostly dressed by servants.
D. They drew their swords from the left.
66. Women’s clothes still button from the left today because .
A. adopting men’s style is improper for women
B. manufacturers should follow standards
C. modern women dress themselves
D. customs are hard to change
67. The passage is mainly developed by .
A. analyzing causes B. making comparisons
C. examining differences D. following the time order
B
Love, success, happiness, family and freedom----how important are these values to you? Here is one interview which explores the fundamental questions in life.
Question: Could you introduce yourself first?
Answer: My name is Misbah, 27 years old. I was born in a war-torn area. Right now I’m a web designer.
Q: What are your great memories?
A: My parents used to take us to hunt birds, climb trees, and play in the fields. For me it was like a holiday because we were going to have fun all day long. Those are my great memories.
Q: Does your childhood mean a lot to you?
A: Yes. As life was very hard, I used to work to help bring money in for the family. I spent my childhood working, with responsibilities beyond my age. However, it taught me to deal with problems all alone. I learnt to be independent.
Q: What changes would you like to make in your life?
A: If I could change something in my life, I’d change it so that my childhood could have taken place in another area. I would have loved to live with my family in freedom. Who cares whether we have much money, or whether we have a beautiful house? It doesn’t matter as long as I can live with my family and we are safe.
Q: How do your get along with your parents?
A: My parents supported me until I came of age. I want to give back what I’ve got. That’s our way. But I am working in another city. My only contact with my parents now is through the phone, but I hate using it. It filters(过滤) out your emotion and leaves your voice only. My deepest feelings should be passed through sight, hearing and touch.
60. In Misbah’s childhood, .
A. he was free from worry
B. he liked living in the countryside
C. he was fond of getting close to nature
D. he often spent holidays with his family
61. What did Misbah desire most in his childhood?
A. A colorful life. B. A beautiful house.
C. Peace and freedom. D. Money for his family.
62. How would Misbah prefer to communicate with his parents?
A. By chatting on the Internet. B. By calling them sometimes.
C. By paying weekly visits. D. By writing them letters.
63. If there were only one question left, what would it most probably be?
A. What was your childhood dream?
B. What is your biggest achievement?
C. What is your parents’ view of you?
D. What was your hardest experience in the war?
试题第三部分: 阅读理解 (共20小题,每小题2分,满分40分)
A
One morning more than thirty years ago, I entered the Track Kitchen, a restaurant where everyone from the humblest(卑微的) to the most powerful came for breakfast. I noticed an empty chair next to an elderly, unshaven man, who looked somewhat disheveled. He was wearing a worn-out hat and was alone. I asked if I might join him. He agreed quietly and I sat down to have my breakfast.
We cautiously began a conversation and spoke about a wide rang of things. We never introduced ourselves. I was concerned that he might have no money and not be able to afford something to eat. So as I rose to go back to the counter and buy a second cup of coffee, I asked,
“My I get you something ?”
“A coffee would be nice.”
Then I bought him a cup of coffee, We talked more, and he accepted another cup of coffee, Finally, I rose to leave, wished him well, and headed for the exit. At the door I met one of my friends. He asked,
“How did you get to know Mr. Galbreath?”
“Who?”
“The man you were sitting with. He is chairman of the Board of Churchill Downs.”
I could hardly believe it. I was buying, offering a free breakfast, and feeling pity for one of the world’s richest and most powerful men!
My few minutes with Mr. Galbreath changed my life. Now I try to treat everyone with respect, no matter who I think they are, and no matter another human being with kindness and sincerity.
56. What does the underlined word “disheveled” mean?
A. Unfriendly. B. Untidy. C. Gentle. D. Kind.
57. The author bought coffee for the old man because
A. he thought the old man was poor
B. he wanted to start a conversation
C. he intended to show his politeness
D. he would like to thank the old man
58. How did the author probably feel after he talked with his friend?
A. Proud. B. Pitiful. C. Surprised. D. Regretful
59. What is the message mainly expressed in the story?
A. We should learn to be generous.
B. It is honorable to help those in need.
C. People in high positions are not like what we expect.
D. We should avoid judging people by their appearances.
D
Recently there was a major discovery in the scientific research—the mapping of all DNA in a human gene（基因）is complete.Couple of years ago,this seems an impossible task for scientist to accomplish.All this progress in science leads us to believe that the day,when the human being will be cloned,is not far away.Human cloning has always been a topic of argument，in terms of morality or religion.
Taking a look at why cloning might be beneficial,among many cases,it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning.If the clonc was free of genetic limitations。Then the other clone would be as well.The latter could foe inserted in the woman and allowed to ripen to term.Moreover，cloning would enable women,who can’t get pregnant,to have children of their own.
Cloning humans would also mean that organs could be cloned,so it would be a source of perfect transfer organs.This,surely would be greatly beneficial to millions of unfortunate peoplearound the world that are expected to lose their lives due to failure of single(or more) organ
（s）.It is also arguable that a ban on cloning may be unlawful and would reb pepole of the right to reproduce and limit the freedom of scientists.
Arguments against cloning are also on a perfectly practical side.Primarily,I believe that cloning would step in the normal “cycle”of life.There would be a large number of same genes.,which reduce the chances of improvement，and,in turn,development-the fundamental reason how living things naturally adapt to the ever-changing environment. Life processes failing to do so might result in untimely disappearance.Futhermore,cloning would make the uniqueness that each one of us possesses disapparance.Thus,leading to creation of genetically engineered groups of people for specific purposes and,chances are,that those individuals would be regarded as “objects”rather than people in the society.
Scientists haven’t 100 percent. guaranteed that the first cloned will be normal.Thus this could result in introduction of additional limitations in the human “gene-pool”.
Regarding such arguable topics in “black or white” approach seems very innocent to me personally.We should rather try to look at all “shades:of it.I believe that cloning is only legal if its purpose is for cloning organs,not humans.Then we could regard this as for “saving life”instead of “creating life”.I believe cloning humans is morally and socially unacceptable.
67.Which of the following is true according to the passage？
A.Genetic limitation will be beneficial for some women
B.A large number of genes will prevent us from developing
C.Prohibition of cloning might limit the freedom of scientists
D.First cloned humans might be normal according to scientists
68.What’s the author’s oponion on cloning?
A.Cloning should be entirely banned
B. Cloning should be used in creating life
C. Cloning will take away the right to reproduce
D. Cloning is acceptable if it is used for cloning organs
69.Where can you read this article?
A.In a story book
B.In a magazine
C.In a science fiction
D.In a brochure
70.Which of the following shows the structure of the passage
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