Even facts “forgotten” by people during a busy day may be retrieved if this is followed by a good night’s sleep.
Researchers from the University of Chicago asked volunteers to remember simple words．Many found their memories letting them down towards the end of the day, but the following morning, those who had slept well could recall much more.
Researchers, writing in the journal Nature, said the brain could “rescue” lost memories during the night.
When the brain is first asked to remember something that memory is laid down in an “unstable” state, meaning that it is possible that it could be lost．At some point, the brain consolidates those it deems important into a “stable”, more permanent state．However, the Chicago researchers suggested that it was possible for a “stable” memory to be made “unstable” again．This would mean that memories could be modified then filed away again in the face of new experiences.
The 12 volunteers tested in the experiment were played words created through a speech synthesizer which were purposely difficult to understand．Initially, the written version of the word from the audio version only．Tests revealed that the ability to recall the right word tended to tail off as the day ended.
However, when the volunteers were retested after a good night’s sleep, they were able to recall some words that they had “ forgotten” the previous evening.
Dr Daniel, one of the study authors, said: “Sleep consolidates memories, protecting them against subsequent interference or decay．Sleep also appears to “recover” or restore memories.” He said: “If performance is reduced by decay, sleep might actively recover what has been lost.”
Dr Karim Nader, from the Department of Psychology in McGill University in Montreal, said: “Memory research is undergoing a transformation---no longer is memory thought to be a hard-writing of the brain, instead it seems to be a process of storage and restorage.”
Sleep helps some memories “mature” and also prunes out unimportant memories.What does the first paragraph implies?
| A．A busy day makes people forget things easily. |
| B．People need a good night’s sleep after a busy day. |
| C．A good night’s sleep helps memories. |
| D．A good night’s sleep helps people forget a busy day. |
The words the 12 volunteers played in the experiment were not ____
| A．created through a speech synthesizer |
| B．hard to understand |
| C．available at the beginning |
| D．designed to test people’s ability of understanding |
According to the passage, memory_____
| A．is a hard-writing of the brain |
| B．is not a process of storage |
| C．is not a process of restorage |
| D．will be mature with the help of sleep |
Which of the following is NOT true?
| A．When people first remember something, the memory is in an “unstable state”. |
| B．The brain will change those important unstable memories into stable. |
| C．Once the memory become stable, it will never become unstable again. |
| D．Sleep can protect memories from being harmed. |
“Everybody loves a bargain.” One person’s useless, ugly, or broken object can be another person’s bargain. That is why so many Americans do not throw things away. They put them outside their houses. They put on a “For Sale” sign. And, as simple as that, they have a yard sale.
The sellers put a paid announcement(付费通告)in a local newspaper. It tells when and where the yard sale will take place. These sales are very popular during weekends in spring, summer, and autumn. Early in the morning, all the things to be sold are carried out of the house. Then they sit all day in the sunlight---like tired guests at a party---waiting for someone to take them home.
Just about anything can be sold at a yard sale. Sometimes, there are more clothes than anything else. Cooking equipment is also popular. So are old toys, tools, books, tables and chairs. Then there are objects called “white elephants”. A white elephant is something you think is extremely ugly or useless. It may be an electric light shaped like a fish. You feel a sharp pain whenever you look at it. To someone else, however, it might be a thing of beauty and joy.
Some people go to yard sales to find a special thing that they collect. It may be old toy trains, for example, or painting of dogs. Experts say more Americans are collecting old things now than ever before. Most people who go to yard sales, however, are not looking for anything special. They might buy an object simply because it costs so little. They enjoy negotiating(谈判) over prices, even if they really do not need the object. Later, they may hold their own yard to sell all the things they have bought.What kind of things will go to a yard sale?
| A．Cheap and ugly things. | B．Things people no longer use. |
| C．Things out of season. | D．Things of great value. |
A white elephant refers to _________.
| A．something that can cause a feeling of pain |
| B．something disliked by the owners while appreciated by others |
| C．something sold at the lowest prices |
| D．a toy shaped like a fish |
Most people go to yard sales to________.
| A．find valuable paintings | B．look for something special |
| C．find a bargain | D．kill their time |
Which of the following is NOT true about a yard sale?
| A．It may not be held when the weather is very cold. |
| B．It can last for a whole day. |
| C．It is usually held with a party. |
| D．It is held outdoors. |
We can infer from the last paragraph that__________.
| A．people may find something of great value on a yard sale |
| B．yard sales only attract those who have a low income |
| C．things on a yard sale can cost people a lot |
| D．most people don’t want to go to yard sales. |
As any homemaker who has tried to keep order at the dinner table knows, there is far more to a family meal than food. Sociologist Michael Lewis has been studying 50 families to find out just how much more.
Lewis and his co-workers carried out their study by videotaping the families while they ate ordinary meals in their own homes. They found that parents with small families talk actively with each other and their children. But as the number of children gets larger, conversation gives way to the parents’ efforts to control the loud noise they make. That can have an important effect on the children." In general the more question-asking the parents do, the higher the children’s IQ scores," Lewis says. "And the more children there are, the less question-asking there is."
The study also provides an explanation for why middle children often seem to have a harder time in life than their siblings(兄弟，姐妹). Lewis found that in families with three or four children, dinner conversation is likely to center on the oldest child, who has the most to talk about, and the youngest, who needs the most attention. “Middle children are invisible,” says Lewis. “When you see someone get up from the table and walk around during dinner, chances are that it’s the middle child.” There is, however, one thing that stops all conversation and prevents anyone from having attention: “When the TV is on,” Lewis says, “dinner is a non-event(扫兴的事).”The writer’s purpose in writing the text is to _________.
| A．show the relationship between parents and children |
| B．teach parents ways to keep order at the dinner table |
| C．report on the findings of a study |
| D．give information about family problems |
Parents with large families ask fewer questions at dinner because____.
| A．they are busy serving food to their children |
| B．they are busy keeping order at the dinner table |
| C．they have to pay more attention to younger children |
| D．they are tired out having prepared food for the whole family |
By saying “Middle children are invisible” in paragraph 3, Lewis means that middle children__________.
| A．have to help their parents to serve dinner |
| B．get the least attention from the family |
| C．are often kept away from the dinner table |
| D．find it hard to keep up with other children |
Lewis’ research provides an answer to the question_________.
| A．why TV is important in family life |
| B．why parents should keep good order |
| C．why children in small families seem to be quieter |
| D．why middle children seem to have more difficulties in life |
Which of the following statements would the writer agree to?
| A．It is important to have the right food for children. |
| B．It is a good idea to have the TV on during dinner. |
| C．Parents should talk to each of their children frequently. |
| D．Elder children should help the younger ones at dinner. |
“Mum, what does it mean when someone tells you that they have a skeleton (骨骼) in the closet (衣橱)？”Jessica asked. “A skeleton in the closet?” her mother paused thoughtfully. “Well, it’s something that you would rather not have anyone else know about. For example, if in the past, someone in Dad’s family had been arrested for stealing a horse, it would be ‘a skeleton in his family’s closet’. He really wouldn’t want any neighbor to know about it.”
“Why pick on my family?” Jessica’s father said with anger. “Your family history isn’t so good, you know. Wasn’t your great-great grandfather a prisoner who was transported to Australia for his crimes?”“Yes, but people these days say that you are not a real Australian unless your ancestors arrived as prisoners.”“Gosh, sorry I asked. I think I understand now,” Jessica cut in before things grew worse.
After dinner, the house was very quiet. Jessica’s parents were still quite angry with each other. Her mother was ironing clothes and every now and then she glared at her husband, who hid behind his newspaper pretending to read. When she finished, she gathered the freshly pressed clothes in her arms and walked to Jessica’s closet. Just as she opened the door and reached in to hang a skirt, a bony arm stuck out from the dark depths and a bundle of white bones fell to the floor. Jessica’s mother sank into a faint (晕倒), waking only when Jessica put a cold, wet cloth on her forehead. She looked up to see the worried faces of her husband and daughter.
“What happened? Where am I?” she asked. “You just destroyed the school’s skeleton, Mum,” explained Jessica. “I brought it home to help me with my health project. I meant to tell you, but it seemed that as soon as I mentioned skeletons and closets, it caused a problem between you and Dad.” Jessica looked in amazement as her parents began to laugh madly. “They’re both crazy,” she thought. According to Jessica’s mother, “a skeleton in the closet” means .
| A．a family honor | B．a family secret |
| C．a family story | D．a family treasure |
What can we learn about some Australian’s ancestors from Paragraph 2?
| A．They were brought to Australia as prisoners. |
| B．They were the earliest people living in Australia. |
| C．They were involved in some crimes in Australia. |
| D．They were not regarded as criminals in their days. |
Jessica’s mother fell down into a faint because she was .
| A．knocked | B．frightened | C．injured | D．surprised |
Why did Jessica bring a skeleton home?
| A．She was curious about it. | B．She planned to keep it for fun. |
| C．She needed it for her school task. | D．She intended to scare her parents. |
Jessica’s parents laughed madly at the end of the story probably because .
| A．they were crazy |
| B．they were overexcited |
| C．they realized their misunderstanding |
| D．they both thought they had won the quarrel |
How Women Were Freed From Their Homes
As late as 1800, a woman’s only place was in her home. Women in business were unheard of. No respectable woman would dream of entering what was strictly a “man’s world”. Even if she would, what could she do? Men were sure that no woman could do a job well outside her home. This was a widely accepted idea. When the famous Bronte sisters began writing books in 1846, they had to resort to using men’s names as aliases.
Teaching was the first profession opened to women, soon after 1800. But even that was not easy for women to take because most high schools and colleges were open only to men. Oberlin College in Ohio was the first college in America to take in women.
Nursing was regarded as a respectable profession for women only after Florence Nightingale won high credit for her nursing career and became famous. Miss Nightingale opened the first training school for nursing in 1860 in England.
The invention of typewriters in 1867 helped to bring women out of their homes to join the business world. Because women are careful and have nimble fingers, businessmen found that they were well suited to this kind of work.
By 1890, tens of thousands of women were working in schools, hospitals, shops, offices, and factories both in England and the States. Some even managed to become doctors or lawyers. The idea of women working in business and other circles was accepted. Oberlin College was the first college in America _______.
| A．where teaching was a profession only open to women |
| B．where girls could get advanced education |
| C．to train women to be teachers and nurses |
| D．to accept women only as professors and students |
It can be inferred from the text that besides nursing, Florence Nightingale was also ______.
| A．a doctor | B．a lawyer | C．a teacher | D．a businessman |
Quite a lot of women entered the business world _______
| A．soon after 1800 | B．when Nightingale became famous |
| C．at the beginning of this century | D．after the typewriter came into being |
Do you have a sore throat, a running nose and a headache? Do you keep coughing and sneezing? If you do, the chances are that you have a cold or perhaps flu--- but which one? Although both colds and flu are caused by viruses, they are very different illnesses.
Colds, which usually last about a week, affect the nose most. They commonly cause a runny nose and sneezing. Sometimes, they cause a headache, a cough and slightly aching muscles.
Flu is much more serious illness and is caused by different group of viruses. People with flu usually get all the symptoms described above. However, they also get a high fever, a dry cough and much worse aching. Fever is one of the typical symptoms of the flu for all ages. The symptoms also last much longer. Sometimes they don’t disappear for at least two weeks.
Flu can be a deadly disease. The elderly, who are weaker and less healthy than most younger people, can die from flu. This is one reason why old people are advised to have a flu injection before the start of winter when flu is most common. This injection is inexpensive and definitely worth it.
If you have a cold or flu, you must always deal with used tissues carefully. Don’t leave dirty tissues on your desk or on the floor. Someone else has to pick these up and viruses could be passed on. And finally, remember to cover your nose and mouth when you sneeze！You don’t want to see the small drop of liquids blown out of your nose and mouth when you sneeze, do you? Disgusting, eh? Now you can understand why it’s a good idea to cover your nose and mouth when you sneeze! In paragraph 4, we learn that ______.
| A．flu injection can cause death | B．most old people die from flu |
| C．flu is most common in summer | D．flu can kill old people easily |
Dealing with used tissues properly is important because ______.
| A．it helps keep your classroom tidy | B．people hate picking up dirty tissues |
| C．it prevents the spread of colds and flu | D．picking up lots of tissues is hard work |
Which of the following statements is TRUE according to the passage?
| A．Both colds and flu last the same time. |
| B．Both colds and flu can be prevented by injection. |
| C．Both colds and flu are caused by the same viruses. |
| D．Both colds and flu have an aching symptom. |
Which is probably the best title for the passage?
| A．Cold or Flu? | B．The Different Symptoms of a Cold and Flu |
| C．Prevention Is Better Than Cure | D．Cover Your Nose and Mouth When Sneezing |