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.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 |
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. |
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. |
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
Mr. Scott has worked at a police station since he left army five years ago. He’s brave and has already caught many thieves. He was promoted (提升) to the rank of officer last month. Now he works harder.
It was Mrs. Scott’s birthday yesterday. The woman thought her husband was very busy, and she decided to hold a small party only with her husband. Mr. Scott agreed with her and they didn’t invite any friends of theirs to the party. At noon he didn’t go home for lunch and went to a shop. There he bought an expensive diamond necklace for his wife. He hoped to put it on her neck with his own hands at the party. To his sorrow, a rich woman’s house was broken into and some jewelry was stolen, and at once he was sent there to solve the case (案件)，when he came back to his office, it was late at night. He was tired and hungry. He brought out the necklace and was going to leave when he was asked to answer a telephone. Several minutes later when he came into his office, he found the necklace was gone, and he saw the case (盒子) only on his table. He became very angry and called all the policemen in and told them about it. But nobody admitted having stolen the necklace.
“I’ll give you a chance.” Said Mr. Scott, “ All the lights will be turned off. The man who took the necklace away will be able to put the necklace into the case in the dark.”
A few minutes later, Mr. Scott turned on the lights again. To his surprise, the case was also stolen.Mr. Scott was promoted because _______.
| A．he had been in the army. |
| B．he was young. |
| C．he had worked there for five years. |
| D．he did his duty better than his workmates. |
Having read the story, we can know ______.
| A．Mr. and Mrs. Scott loved each other. |
| B．the necklace was the most expensive in the town. |
| C．The Scotts had a few friends there. |
| D．Mr. Scott was the richest at the police station. |
At last, _________
| A．Mr. Scott knew who had stolen the necklace. |
| B．Mr. Scott lost both the necklace and the case. |
| C．the thief put the necklace back into the case. |
| D．Mr. Scott caught the thief in his office. |
Happy April Fool’s Day! In celebration of the day, we have put together a list of some of the greatest hoaxes (恶作剧) in history. They are the lies that have been designed for innocent people who are ready to believe them.
▲INSTANT COLOR TV
In 1962 there was only one TV channel in Sweden, and it broadcast in black and white. The station’s Kjell Stepson, appearing on the news to announce that thanks to a newly developed technology, all viewers could now quickly and easily transform their existing sets to display color reception. All they had to do was pull a nylon (尼龙) stocking over their TV screen, and they would begin to see their favorite shows in color. Reportedly, hundreds of thousands of people, were taken in. Actual color TV transmission only started to appear in Sweden on April 1, 1970.
▲SAN SERRIFFE
In 1977 the British newspaper The Guardian published a special seven –page supplement(增刊) in honor of the tenth anniversary of San Serriffe, a small republic located in the Indian Ocean. A series of articles affectionately asked for more information about the beautiful holiday spot. Few noticed that every thing about the island was made up.
▲NIXON FOR PRESIDENT
In 1992 American National Public Radio’s Talk of the Nation program announced that, Richard Nixon, in a surprise move, was running for President again. His new campaign slogan was, “ I didn’t do anything wrong, and I won’t do it again.” Accompanying this announcement were audio clips(片断) of Nixon delivering his election speech. Listeners responded immediately to the announcement, flooding the show with calls expressing shock and anger. Only during the second half of the show did the host John Huckleberry reveal that the announcement was a practical joke. Nixon’s voice was copied by comedian Rich Little.Which of the following countries in NOT mentioned in the text?
| A．India | B．The UK | C．The United States | D．Sweden |
Who worked as a host on the radio?
| A．Kjell Stepson | B．Rich Little | C．Richard Nixon | D．John Huckleberry |
When did the small republic San Serriffe come into being?
| A．In 1962 | B．In 1977 | C．In 1992 | D．Never |
Where can we probably read this article?
| A．In the ad. | B．In a magazine | C．In a novel | D．In a news report |
Florence Nightingale was born in a rich family. When she was young she took lessons in music and drawing, and read great books. She also traveled a great deal with her mother and father.
As a child she felt that visiting sick people was both a duty and a pleasure. She enjoyed helping them.
At last mind was made up. “I’m going to be a nurse,” she decided.
“Nursing isn’t the right work for a lady,” her father told her.
“Then I will make it so,” she smiled. And she went to learn nursing in Germany and France. When she returned to England, Florence started a nursing home for home. During the Crimean War in 1854 she went with a group of thirty eight nurses to the front hospitals. What they saw there was terrible. Dirt and death were everywhere to be seen — and smelled. The officer there did not want any woman to tell him how to run a hospital, either. But the brave nurse went to work.
Florence used her own money and some from friends to buy clothes, beds, medicine and food for the men. Her only pay was in smiles from the lips of dying soldiers. But they were more than enough for this kind woman.
After she returned to England, she was honored for her services by Queen Victoria. But Florence said that her work had just begun. She raised money to build the Nightingale Home for Nurses in London. She also wrote a book on public health, which was printed in several countries.
Florence Nightingale died at the age of ninety, still trying to serve others through her work as a nurse. Indeed, it is because of her that we honor nurses today.When she was a child, Florence ____ .
| A．loved to travel very much |
| B．knew what her duty in life was |
| C．loved to help the sick people |
| D．was most interested in music and drawing |
What made Florence make up her mind to become a nurse？
| A．Her father’s support. |
| B．Her desire to help the sick. |
| C．Her education in Germany and France. |
| D．Her knowledge from reading great books. |
During the Crimean War in 1854, Florence served in the front hospital where ____ .
| A．she earned a little money |
| B．work was very difficult |
| C．few soldiers died because of her work |
| D．she didn’t have enough food or clothes |
The passage can best be described as ____ .
| A．the life story of a famous woman |
| B．a description of the nursing work |
| C．an example of successful education |
| D．the history of nursing in England |
In England a woman fell down a stair. Panic followed—178 persons lost their lives. In Michigan a woman fell ill. There was a call for water. Someone thought it meant fire---71 were killed. In Oklahoma an old man’s hair caught fire---36 died.
What should you do to be out of danger?
1. As you sit in any crowd, pick out an exit(出口) which is not the one where most persons enter and plan to use if necessary.
2. If a rush stairs, do not get into it . Stay still. Let it pass. Then go to the exit you have chosen.
3. Do not cry out. Speak quietly. Act calmly.
4.Do not stop for your hat and coat unless they are at hand.
5. If there is smoke, crouch. The best air is about three feet above the floor.
6. When you are outside the building, stay out. Many dead would be alive if they had not returned for something.
7. When you get out, move far from the door so that others can get out.The first paragraph tells us that over two hundred people lost their lives because of_________.
| A．a fire | B．a call for water |
| C． falling downstairs | D．panic |
If you are in a crowd when panic stars, you should ________.
| A．run with the others. |
| B．call for help as loudly as you can. |
| C．hurry at once to an exit. |
| D．stay still until the crowd has passed. |
What should you do once out of a place where there is panic?
| A．stay outside. |
| B．go back for your wallet. |
| C．return to ask people not to run. |
| D．stand near the exit. |
When you are safe outside a burning building , stay away from the door so that _______.
| A．the smoke can get out. |
| B．you will not get burned |
| C．others may leave. |
| D．others may enter. |
In 2006, the UK government started to allow universities in England and Wales to charge British students tuition fees. More than 80 percent of students in England and Wales now take out a student loan in order to go to university. They use the loan (贷款) to pay for tuition fees, books and living expenses. Although the interest on student loans is quite low, it begins as soon as the student receives the loan. The average student in England and Wales now graduates from university with debts of around £12,000. Students of medicine usually have debts of more than £20,000. That is a lot of money. It means graduates cannot afford to buy a house for many years. They even struggle to pay rent on a flat, because they have to start paying back the student loan after graduating. If you start to earn over £15,000 a year, the government takes repayments directly from your monthly salary. Is it any surprise, therefore, that the average British person does not leave their parents’ home until they are 30 years old?
You might think that a British person with a degree will find it easy to get a well-paid job. However, most people in white-collar jobs seem to have a degree these days, so there is a lot of competition. Also, British companies tend to value work experience over a piece of paper. Like everyone else, graduates usually have to start at the bottom and work their way up. That can be very frustrating for them, since they are often over-qualified for the work they are doing. While at university, they have dreams of getting an exciting, challenging job. Therefore, life after university ends up being quite disappointing for a lot of graduates.
All of the above is beginning to make British people question whether a university degree is really worth the money.What's the best title of this passage?
| A．What's a University Education worth in the UK? |
| B．There is a lot of competition in the UK |
| C．There won't be any University Place left for British students |
| D．It doesn't cost students more and more to attend university |
What's the following is true?
| A．University Education is really worth the money in England |
| B．University Education is worth all over the world except in England |
| C．British education is becoming more expensive for a majority of British students |
| D．British students don't like to go to university |
We can infer from the passage ____
| A．The average British person didn't leave their parents' home until they are 35 years old |
| B．Having a degree doesn't get aBritish person a good job |
| C．Students are graduating without larger and larger debts. |
| D．things are easier for students from other countries coming to study |
in the UK without moneyThe word "interest" in paragraph2 means_______
| A． money paid for a week's work |
| B． money borrowed from a band |
| C． a regular monthly salary |
| D． extra money paid on a loan or bank savings |