Scientists say they now have proof to support the old-fashioned advice that it's best to sleep on a problem. They say sleep strengthens the memory and helps the brain organize the masses of information we receive each day.
Lead researcher Bob Stickgold at the Harvard Medical School said, "Sleep helps us draw rules from our experiences. It's like knowing the difference between dogs and cats even if it's hard to explain."
The US research team studied how well students remembered connections between words and symbols (象征) , reports New Scientist. They compared how the students performed if they had had a sleep between seeing the words and having the test, and if they had not slept. They found that people were better able to remember lists of related words after a night's sleep than after the same time spent awake during the day. They also found it easier to remember themes (主题) that the words had in common. But they forgot around one in four more themes if they had been awake. Prof. John Groeger, of Surrey University's Sleep Research Centre, said, "People have been trying for years to find out what the purpose of sleep is, as we know that only certain parts of it have a restorative (有助恢复的) value. " "We form and store huge numbers of experiences in the head every day, and sleep seems to be the way the brain deals with it all."
【小题1】The phrase" to sleep on a problem" in Paragraph 1 most likely means to______.
| A．pay full attention to a problem | B．wait until later for a decision |
| C．sleep to forget a problem | D．have difficulty sleeping |
| A．put together words of similar meanings |
| B．remember words and their meanings |
| C．show their knowledge of words |
| D．make up lists of related words |
| A．Themes learned right before the test |
| B．Rules from personal experience |
| C．Words learnt before a good sleep |
| D．Ideas stored together in the brain |
| A．It shows sleep may help us manage information |
| B．It helps find out the common themes of word |
| C．It tells us that more sleep can improve health |
| D．It proves the value of old-fashioned advice |
【小题1】B
【小题2】B
【小题3】C
【小题4】A
解析试题分析： 本文讲述的睡眠对人的记忆的影响，在睡觉之前背诵的东西，醒了以后更加容易被记得。
【小题1】.B 推理题。根据本句Scientists say they now have proof to support the old-fashioned advice that it's best to sleep on a problem.是指带着问题入睡，也就是指暂时无法解决问题，或者记不住，或想不起来。要等到醒了以后再说。故B项符合上下文。
【小题2】B 推理题。根据第3段2,3,4行. They compared how the students performed if they had had a sleep between seeing the words and having the test, and if they had not slept. They found that people were better able to remember lists of related words after a night's sleep than after the same time spent awake during the day可知这个研究主要是针对单词和象征之间的联系。研究学生在睡着以后，再醒来和一直醒着。哪一种记忆的效果更好。故B正确。
【小题3】C 细节题。根据第三段4,5行They found that people were better able to remember lists of related words after a night's sleep than after the same time spent awake during the day.可知在睡觉之前背诵的单词更容易被记住。故C正确。
【小题4】A 推理题。根据文章最后4行"People have been trying for years to find out what the purpose of sleep is, as we know that only certain parts of it have a restorative (有助恢复的) value. " "We form and store huge numbers of experiences in the head every day, and sleep seems to be the way the brain deals with it all."可知睡眠可以帮助我们管理好信息，帮助我们记忆。故A正确。
考点：考察科普类短文阅读
科目：高中英语 来源： 题型：阅读理解
Everyone may all have the experience of feeling anxious and stressed when having a rough day or having some troubles. Different people may choose different ways to deal with it, and for most people a break for a 10-minute walk may be quite useful.www.zxxk.com
Anyway, here is another way around: to get a piece of chewing gum, and chew it. According to a Swinburne University of Technology study, gum-chewing has been found to “relieve anxiety, improve alertness(机敏性) and reduce stress among individuals in a laboratory setting.”
Some may argue that a laboratory is not the same as an office. But check out the conditions of the study: individuals were monitored while performing “a group of ‘multi-tasking’ activities.” Doesn’t it sound like the situation in the office?www.zxxk.com
Here’s a summary of some of the study’s findings:
Gum chewers showed a reduction in anxiety as compared to non-gum chewers by nearly 17 percent during mild stress and nearly 10 percent in appropriate stress.
Gum chewers showed improvement in alertness over non-gum chewers by nearly 19 percent during mild stress and 8 percent in moderate stress.
Improved Performance: Chewing gum resulted in a big improvement in overall performance on multi-tasking activities.
Although these aren’t major improvements, every little bit works and chewing a piece of gum is a lot quicker and easier than slipping outside for a 10-minute walk. So, how does gum work this magic? In part it does so by lowering the level of cortisol(皮质醇)—a steroid(类固醇) hormone that is released in response to stress in your system.
A few words of advice before you reach for the gum: don’t crack your gum, and be sure to chew it with your mouth closed. In fact, I’d say keep the gum out of meetings, because it really looks impolite to others around you.
【小题1】From the study in the text we know that_________________.
| A．gum chewers may lack alertness |
| B．gum chewers tend to be less stressed |
| C．gum chewers can finish many jobs perfectly |
| D．gum chewers can reduce their anxiety and anger easily |
| A．It works by improving alertness. |
| B．It works by allowing a 10-minute walk. |
| C．It works by reducing one’s level of cortisol. |
| D．It works by being chewed in a laboratory setting. |
| A．People should chew gum with their mouths closed in a meeting. |
| B．It is impolite to chew gum in a meeting with people around you. |
| C．People can crack gum freely when meeting friends. |
| D．People should be careful when chewing gum at home. |
| A．How to chew gum. | B．How to relieve stress. |
| C．Why people love chewing gum. | D．Chewing gum can relieve stress. |
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科目：高中英语 来源： 题型：阅读理解
When my brother and I were young, my mom would take us on Transportation Days.
It goes like this: You can't take any means of transportation more than once. We would start from home, walking two blocks to the rail station. We'd take the train into the city center, then a bus, switching to the train, then maybe a taxi. We always considered taking a horse carriage in the historic district, but we didn't like the way the horses were treated, so we never did. At the end of the day, we took the subway to our closest station, where Mom's friend was waiting to give us a ride home—our first car ride of the day.
The good thing about Transportation Days is not only that Mom taught us how to get around. She was born to be multimodal (多方式的). She understood that depending on cars only was a failure of imagination and, above all, a failure of confidence—the product of a childhood not spent exploring subway tunnels.
Once you learn the route map and step with certainty over the gap between the train and the platform, nothing is frightening anymore. New cities are just lightrail lines to be explored. And your personal car, if you have one, becomes just one more tool in the toolbox—and often an inadequate one, limiting both your mobility and your wallet.
On Transportation Days, we might stop for lunch on Chestrut Street or buy a new book or toy, but the transportation was the point. First, it was exciting enough to watch the world speed by from the train window. As I got older, my mom helped me unlock the mysteries that would otherwise have paralyzed my first attempts to do it myself: How do I know where to get off? How do I know how much it costs? How do I know when I need tickets, and where to get them? What track, what line, which direction, where's the stop, and will I get wet when we go under the river?
I'm writing this right now on an airplane, a means we didn't try on our Transportation Days and, we now know, the dirtiest and most polluting of them all. My flight routed me through Philadelphia. My multimodal mom met me for dinner in the airport. She took a train to meet me.
【小题1】 According to the writer, what was the greatest benefit of her Transportation Days?
| A．Building confidence in herself. |
| B．Reducing her use of private cars. |
| C．Developing her sense of direction. |
| D．Giving her knowledge about vehicles. |
| A．displayed | B．justified | C．ignored | D．ruined |
| A．Airplane. | B．Subway. | C．Train. | D．Car. |
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科目：高中英语 来源： 题型：阅读理解
Downing the last drop of an expensive famous brand H2O as well as remembering to throw the empty bottle in the recycling bin, makes you feel pretty good about yourself, right? It shouldn’t. Even when the bottles are recycled, there are all kinds of other consequences of swallowing bottled water, says Melissa Peffers, the air-quality program manager for Environmental Defense.
The containers are often filled in faraway lands, then shipped from abroad, and stored in refrigerators at your local store. Compare that with the influence on environment of turning on your tap, filling a glass, and drinking up!
Anyone who is choosing bottled water for health reasons is misguided, says Peffers, “Most bottled water is just tap water.” And what comes out of your tap is carefully monitored to follow the strict rules. Consider another fact that bottled water is surprisingly expensive, especially when compared with the alternative, which is almost free, and it is astonishing that America’s desire for bottled water seems impossible to satisfy, reaching nearly 30 billion bottles a year.
“My parents’ generation never had bottled water,” says Isabelle Silverman, an Environmental Defense legal adviser. She has made a commitment to going bottle free. “You don’t need to fetch it home from the store, and it’s cheaper,” she adds.
Bottled water’s role as a status symbol needs to change, Peffers points out. So when a waiter at an expensive restaurant offers “And what’s your drink?” that’s no reason to forget your conviction(信念). “Don’t be afraid to say, ‘I’ll have tap.’ Say it loud enough that the other tables nearby can hear you,” Peffers says. “And then spend that money on a dessert.”
【小题1】In the first paragraph, the underlined sentence “It shouldn’t.” suggest that people _______.
| A．shouldn’t feel pleased with finishing the water in the bottle. |
| B．shouldn’t feel good about drinking an expensive brand H2O. |
| C．shouldn’t be pleased with just recycling empty bottles. |
| D．shouldn’t be satisfied with drinking only bottled water. |
| A．as safe as bottled water | B．morel likely to be polluted |
| C．healthier than bottle water | D．less convenient than bottled water |
| A．making bottled water free | B．giving up bottled water |
| C．recycling use water bottles | D．providing free water containers |
| A．To encourage them to set an example for others to follow. |
| B．To advise them to save the money for one more dessert. |
| C．To remind them to be aware of their social status. |
| D．To persuade them to speak confidently in public. |
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科目：高中英语 来源： 题型：阅读理解
Bicycle lights may not exactly be a problem that needs solving, but the following can be said about most of them ---- they’re easily stolen if left on an unattended bike. People riding at dusk can forget to turn them on, and those same people can forget to turn them off when they reach their destination. Well, the makers of the Blink/ Steady Bike Light have set out to address all of those shortcomings.
The waterproof(防水的) Blink/ Steady is so far only available as a tail light, although a head light is on the way. It’s fixed onto the bike’s seat post. A built- in photosensor(感光器) tells when it’s become dark enough for the light to be required, and allows it to come on once you begin the riding. According to the producers, it isn’t fooled by things such as headlights or streetlights. The light also contains an accelerometer, also known as a motion sensor, which can tell when the bike is in motion.
Between the two sensors, this means the light will come on only once it’s dark enough, and the bike is moving. Even when stopped at red lights, the small movements of the rider will reportedly be enough to keep the light activated---- it’ll go out after 30 seconds of complete inactivity. While this does mean that the two sensors are continuously powered up, they go into a very low---- power sleep pattern when the bike is sitting, unused.
Light is provided by two5- watt LEDs, seeable over a range of 180 degrees. And power comes from two AAA batteries, which provided up to 200 hours of continuous run time. The designers and engineers behind the Blink/ Steady are now raising money for its commercial production. About US $95 will get you one if they become available.
【小题1】The first paragraph is mainly to mean that______.
| A．bicycle lights are worth a research |
| B．bicycle lights are not a problem at all |
| C．bicycle lights are easy to deal with |
| D．bicycle lights are difficult to turn off |
| A．the weather | B．streetlights | C．headlights | D．natural light |
| A．To protect the bike against water. |
| B．To tell if the bike is moving. |
| C．To make the bike easy to ride. |
| D．To judge the speed of the bike. |
| A．It will be turned off immediately if the bike stops. |
| B．The traffic lights have no effect on the light. |
| C．It won’t use any power if the bike is unused. |
| D．It must meet two requirements if it comes on. |
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科目：高中英语 来源： 题型：阅读理解
Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.
Although there are many different types of food, some animals spend their lives eating only one type. The giant panda eats only one particular type of bamboo. Other animals eat only one type of food even when given the choice. A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.
Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.
【小题1】We can infer from the text that humans and animals ____.
| A．depend on one sense in choosing food |
| B．are not satisfied with their food |
| C．choose food in similar ways |
| D．eat entirely different food |
| A．A white butterfly. | B．A small bird. |
| C．The bear. | D．The fox. |
| A．the season changes |
| B．the food color changes |
| C．they move to different places |
| D．they are attracted by different smells |
| A．food is chosen for a good reason |
| B．French and British food is good |
| C．some people have few choices of food |
| D．some people care little about healthy diet |
| A．Why choosing the right food is important. |
| B．How to choose the right food. |
| C．The right amount of food for a person. |
| D．Vegetables matter more than meat and sugar. |
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科目：高中英语 来源： 题型：阅读理解
In South America, the rich soil of the Amazon River basin（流域）in Brazil is known as “black gold”. Scientists found that the secret of this rich soil was charcoal（木炭）. Local people made it from animal bones and tree branches. They mixed the charcoal with the soil about 1.500 years ago.
Now, scientists in the United States have done a modern demonstration. They say charcoal fertilization offers a revolutionary way to improve soil quality for hundreds or even thousands of years.
Mingxin Guo and his team at Delavare State University heated tree leaves, corn stalks（茎）, small pieces of wood and poultry waste into “biochar”（生物碳）. They reported their findings at a recent meeting of the American Chemical Society in New Orleans.
Biochar could be good news for farmers with poor soil and hungry populations to feed. Professor Guo says it could even help against global warming. Intensive（集约的） farming and overuse of chemical fertilizer give out carbon dioxide into the atmosphere. Biochar does the opposite, he says. It traps carbon in the ground.
The researchers planted winter wheat in containers of soil in a greenhouse — some with biochar, some without. Professor Guo says the wheat grows much better in the pots with biochar. The soil was added two percent charcoal to. But he says even a one percent treatment will increase productivity.
The results demonstrated that biochar can increase organic matter in soil. Loss of nutrients in soil is an increasing problem worldwide as farmers try to grow more food for growing populations.
Next, the team will carry out a five-year study of biochar with spinach（菠菜）, green peppers and tomatoes.
Mingxin Guo says he learns about the “black gold” in Brazil from a magazine story. He explains that it was discovered in the jungle, in the area where waters flow to the Amazon, in the 1960’s. But it was not until recent years that scientists began to bring public attention to it.
【小题1】According to the passage, which of the following statements is TRUE?
| A．The researchers will go on proving their theory. |
| B．The leading researcher learns the theory from the magazine. |
| C．Charcoal was discovered 1,500 years ago. |
| D．Common farming can produce more carbon dioxide. |
| A．it can improve the condition of the soil |
| B．it can be used as a kind of energy |
| C．it can help against global warming |
| D．it can increase productivity of the corn |
| A．reduce the carbon dioxide |
| B．keep the carbon in the soil |
| C．reduce the loss of nutrients in the soil |
| D．absorb the carbon dioxide |
| A．Using Charcoal to Make soil into “Black Gold” |
| B．Using Charcoal to Reduce the Carbon Dioxide |
| C．How Amazon River Basin Produces “Golden Black” |
| D．Guo’s Research on Producing Biochar |
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科目：高中英语 来源： 题型：阅读理解
What will people die of 100 years from now? If you think that is a simple question, you have not been paying attention to the revolution that is taking place in bio-technology(生物技术). With the help of new medicine, the human body will last a very long time. Death will come mainly from accidents, murder and war. Today’s leading killers, such as heart disease, cancer, and aging itself, will become distant memories.
In discussion of technological changes, the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live? Human brains were known to decide the final death. Cells(细胞) are the basic units of all living things, and until recently, scientists were sure that the life of cells could not go much beyond l20 years because the basic materials of cells, such as those of brain cells, would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100, medicine will have advanced to the point at which every 10 years or so, people will be able to take medicine to repair their organs ( The medicine, made up of the basic building materials of life, will build new brain cells, heart cells, and so on—in much the same way our bodies make new skin cells to take the place of old ones.)
It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence, but many technical problems still must be cleared up on the way to this wonderful future.
【小题1】According to the passage, human death IS now mainly caused by____.
| A．diseases and aging | B．accidents and war |
| C．accidents and aging | D．heart disease and war |
| A．medicine | B．the Internet | C．brain cells | D．human organ |
| A．heart disease will be far away from us |
| B．human brains can decide the final death |
| C．the basic materials of cells will last forever |
| D．human organs can be repaired by new medicine |
| A．human life will not last more than 120 years in the future |
| B．humans have to take medicine to build new skin cells now |
| C．much needs to be done before humans can have a longer life |
| D．we have already solved the technical problems in building new cells |
| A．Aging | B．Accidents | C．Cancer | D．Heart disease |
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科目：高中英语 来源： 题型：阅读理解
In the past ten years, many scientists have studied the differences between men and women. And they all got the same answer: The sexes(性别) are different, because their brains are different. And this, the scientists say, makes men and women see the world in different ways.
Boys, for example, generally are better than girls at mathematical ideas. Boys also generally are better than girls at the kind of hand and eye movements necessary for ball sports. Girls, on the other hand generally start speaking earlier than boys. And they generally see better in the dark than boys and are better at learning foreign languages.
What makes men and women better at one thing or another? The answer is the brain. The brain has two sides connected by nerve(神经) tracks. The left side generally is used for mathematics, speech and writing. The right side is used for artistic creation(创造) and the expression for emotions(情感). In men and women, different areas in each side of the brain develop differently. In boys, for example, it’s the area used for mathematics. In girls, it is the area used for language skills. Another interesting difference is that the two sides of a man’s brain are connected by a smaller number of nerves than the two sides of a woman’s brain are.
【小题1】Which of the following is the best title of the article?
| A．Research on the Brain |
| B．Men and Women are Different in Brain |
| C．People’s Different Brains |
| D．Who Are Better, Boys or Girls |
| A．The different brains make |
| B．Sex makes |
| C．The different experiences make |
| D．The influences(影响) of society make |
| A．mathematics | B．physics | C．English | D．chemistry |
| A．The left side of brain in boys generally develops better than that in girls. |
| B．The left side of brain in girls generally develops better than that in boys. |
| C．Men are better than women in all things. |
| D．The area in girls used for language skills develops better. |
| A．is the same as women’s |
| B．is different from women’s |
| C．is larger than women’s |
| D．is twice as large as women’s |
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