Advice to “sleep on it” could be well founded, scientists say. After a good night’s sleep, a problem, which couldn’t be solved the night before, can often seem more manageable, although the evidence until now has been anecdotal (个人体验的). But researchers, at the University of Luebek in Germany, have designed an experiment that shows a good night’s sleep can improve insight (顿悟) and problem-solving.
“If you have some newly-got memories in your brain, sleep acts on these memories and restructures (重新组织) them, and as a result, after sleep, the insight into problem which you could not solve before increases,” said Dr Jan Born, a neuroscientist (神经科学家), at the university.
To test the theory, they taught volunteers two simple rules to help them turn a string of (一连串) numbers into a new order. There was also a third, hidden rule, which could help them increase their speed in solving the problem. The researchers divided the volunteers into two groups: Half were allowed to sleep after the training, while the rest were forced to stay awake. Dr Jan Born and his team noticed that the group that had slept after the training were twice as likely to figure out (想出) the third rule as the other group.
“Sleep helped,” Born said in a telephone interview. “The important thing is that you have to have a memory representation (描绘，表现) of the problem you want to solve in your brain and then you sleep, so it can act on the problem.” But Born admitted that he and his team don’t know how restructuring of memories occurs or what governs it.
Pierre Maquet and Perrine Ruby of the University of Liege in Belgium said the experimental evidence supports the anecdotal suggestions that sleep can help develop creative thinking. Although the role of sleep in human creativity will still be a mystery, the research gives people good reason to fully respect their periods of sleep, they added.
57. The underlined phrase “sleep on it” in Paragraph 1 probably means ______.
A. to delay deciding something until the next day
B. to get as much sleep as possible
C. to go on sleeping without being disturbed
D. to sleep till after the time you usually get up in the morning
58. Jan Born and his team carried out the experiment through ______.
A. comparison B. interview C. survey D. imagination
59. It can be inferred from the passage that ______.
A. people should sleep so long as they have time
B. sleep is the only way to solve hard problems
C. people have various periods of sleep
D. people know how sleep reconstructs memories
60. What would be the best title for the passage?
A. How Sleep Works B. Sleep Helps Solve Problems
C. No Evidence, But Well Founded D. Born’s Discovery On Sleep
The name “cowboy” conjures up many different images from movies, songs and TV. These imagined cowboys range from white-hat-wearing heroes to gun-shooting hooligans(流氓).But, cowboys are actually real people from US history.
When the US Civil War ended, many soldiers had no place to call home. So, they began to drift to the country's rural West. Ranchers(农场主) hired these men to take care of the cattle and work around the ranch. When the ranch owner wanted to sell the cattle, the cowboys would round up the herd from the open prairie(牧场) and drive the cattle miles to the market.
With the invention of barbed wire(铁丝网),the cowboy era(1865-1890) began to come to an end. But people in the East had always been curious about their lifestyle. Many country/western songs during this time tried to capture the true cowboy spirit. Newspapers published cowboy tales in serial form and adventure novels followed. The bigger the fiction, the better the sales. These novels often portrayed cowboys as cruel and violent men. Cowboys carried the bad reputation for many years afterwards.
When movies began to be popular in the 1920s,the cowboy image changed again. Now, a cowboy became the great white knight(骑士) that loved his horse more than the beautiful ladies he rescued. As the cowboy of the “Old West” spent more time with his horse than the ladies, this era's image was not entirely false.
Then, in the 50s,Hollywood began producing so-called “spaghetti westerns(意大利西部片)”.They earned the nickname because Italian companies financed the films and TV shows. This started the decade's “Cowboy Craze”.While this didn't last long, it made modern country/western music, fashion and dance extremely popular.
In recent years, with the help of musicians, radio stations and bars, cowboy nostalgia(怀旧情绪) has returned. Even though his image is still changing—somewhere between ballad singing country boy and barroom fighter—there's one thing for sure, you can't keep the cowboy down.The purpose of this story is to _______.
| A．introduce cowboy movies and novels |
| B．introduce various productions associated with cowboys |
| C．show the cowboy's everlasting charm |
| D．inform us about the cowboy's spirit |
Before they became cowboys, they _______.
| A．served in the army | B．worked as bar-room fighters |
| C．owned ranches | D．were adventurous explorers |
During “the cowboy era” mentioned in the story, _______.
| A．the cowboy often came to the rescue of ladies in newspaper tales |
| B．the distant Wild West appealed to people in the East |
| C．cowboys were shown as cruel and violent men on the silver screen |
| D．country music started the cowboy craze which swept the whole country |
By saying “you can't keep the cowboy down”,the writer means that _______.
| A．cowboys are real people in history | B．cowboys still fascinate people |
| C．you can't make cowboys unhappy | D．you can't grasp the cowboy spirit |
If you've been joining in chat room conversations, or trading e-mail with Web pals, you have become one of the millions who write in a peculiarly short form of English.
And you've got a sense of humor about short forms like SOHF(="sense" of humor failure) to describe Internet newcomers who don't understand you.
Across the globe, every night teenagers and their elders are “talking” online—many of them are talking at the same time.
It's fast: try talking to six people at once. It's brief: three or four words per exchange. It takes wit, concentration, and quick fingers.
And it requires tremendous linguistic economy. There's neither time nor space for explanations. Why consume precious key-strokes telling six friends you have to leave for a moment to take care of your little brother when BRB(="be" right back) will do? Want to enter a conversation? Just type PMFJI(="pardon" me for jumping in). Interested in whom you're talking to? Type A/S/L, the nearly universal request to know your pal's age, sex and location. You may get 15/M/NY as a response from your pal.
If something makes you laugh, say you're OTF(="on" the floor),or LOL(="laughing" out loud),or combine the two into ROTFL(="rolling" on the floor laughing).
And when it's time to get back to work or go to bed, you type GTG(="got" to go) or TTYL(talk to you later).
People want to write as fast as possible, and they want to get their ideas across as quickly as they can. Capital letters are left in the dust, except when expressing emotion, as it takes more time to hold down the “shift” key and capitals. Punctuation is going, too.In order to talk to several people at the same time on the Internet_______.
| A．you have to speak fast and fluently |
| B．you have to express your ideas in a brief way |
| C．you should speak with wit and humor |
| D．one should pay much attention to the accuracy of the words |
If you get 17/F/NY as an answer to your A/S/L, it means_______.
| A．the person on the other end is 17 from New York and he is fine |
| B．you are talking to a girl who is 17 and lives in New York |
| C．you are talking to 17 girls who are from New York |
| D．the person who are talking to you is a 1.7-foot tall New York girl |
To save time on the Internet_______.
| A．some people leave their letters in the dustbin |
| B．some people never use “shift” in their writing |
| C．many people leave the capital and punctuation |
| D．people seldom use capital letters or punctuation |
Methods of training animals have changed greatly in recent years. Zoo keepers have always had problems getting the animals to leave their cages in order for the cages to be cleaned, and also training them to move indoors when appropriate. Another problem was that many of the large animals became listless and bored. In the last twenty years, scientists have done research on dolphins and whales, training them to obey commands. The scientists found they could get animals to obey by rewarding them with food and affection when they responded correctly.
Proper training allows the animals to receive the care they need. It was very difficult to get untrained animals, especially the larger ones, to stay still when they needed medical attention. Now they can be trained, on command, to remain still and even to allow blood samples to be taken and shots administered. All this is accomplished through positive reinforcement, without the use of any force. Affection training, as this process is called, has been used with great success on a wide variety of zoo animals. Animal behavior experts have taught zoo keepers to train bears, tigers, monkeys, and many other species to behave in a way that provides for better animal-keeper interaction. This training also keeps the animals from becoming bored and inactive.
Although some people proclaim(谴责) that this training is inhumance and cruel to animals, results have shown that captive(猎获的)animals who previously were not doing well flourish under the new training procedures.The word “listless” means _______.
| A．countless | B．obedient |
| C．inactive | D．mysterious |
Which of the following is valid conclusion based on this passage?
| A．It is safe to pet any animal. |
| B．Many animals respond favorably to rewards and affection. |
| C．Animals in the wild can be trained. |
| D．Animals should not be kept in zoos. |
The writer's purpose is to _______.
| A．persuade people not to feed animals in the zoo |
| B．show how easy it is to train animals |
| C．explain method of training animals through rewards |
| D．criticize zoo keepers |
Which of the following is an opinion?
| A．Zoo keepers had problems in getting animals to leave their cages. |
| B．Training is cruel to animals. |
| C．Animals obey commands if they are trained to do so. |
| D．Many animals can be trained, on commands, to remain still. |
A weather map is an important tool for geographers. A succession of three or four maps presents a continuous picture of weather changes. Weather forecasters are able to determine the speed of air masses and fronts. They are also able to determine whether an air mass is retaining its original characteristics or taking on those of the surface over which it is moving. Thus, a most significant function of the map is to reveal an synoptic picture(气象图) of conditions in the atmosphere at a given time.
All students of geography should to interpret a weather map accurately. Weather maps contain an enormous amount of information about weather conditions existing at the time of observation over a large geographical area. They reveal in a few minutes what otherwise would take hours to describe. The United States Weather Bureau issues information about approaching storms, floods, frosts, droughts and all climate conditions in general. Twice a month it issues a 30-day “outlook” which is a rough guide to weather conditions likely to occur over broad areas of the United States. These outlooks are based on an analysis of the upper air levels.
With the use of electronic instruments and satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations(气象站).Experiments are also in progress for weather modification studies, although few successful results such as artificial rainmaking have been achieved so far. Which is not mentioned in this passage in the following about one characteristic of weather?
| A．Fronts. | B．Temperature change. | C．Wind speed. | D．Frost. |
The observation of weather conditions by satellites is advantageous because
_______.
| A．it is modern and sophisticated |
| B．it used electronic instruments |
| C．it enables man to alter the weather |
| D．it gives the scientists information not obtained readily otherwise |
The word “interpret” in Paragraph 2 most probably means _______
| A．explain | B．present | C．modify | D．illustrate |
It's interesting that the arrival of snow has effect on people in different countries. For some countries it is an important happening to celebrate each year, while for others a catastrophe(灾害) or even a wonder.
But there are countries between these two kinds that normally expect snow some time over-the winter months, but never receive snow regularly or in the same quantities every year. Britain is one of them, for which the arrival of snow quite simply causes problems. Within hours of the first snowfalls, however light, roads are blocked; trains and buses have to stop in the middle of the way. Normal communication is affected as well: telephone calls become difficult and the post immediately takes more time than usual. And almost within hours, there are also certain shortages—bread, vegetables and other things—not because all these things can no longer be produced or sent to shops, but mainly because people are frightened and go out and store up with food and so on just for fear that something bad should happen.
But why does snow have this effect? After all, the Swiss, the Austrians and the Canadians don't have such problems. It is simple because there is not enough planning and preparation. We need money to buy equipment to deal with snow and ice. To keep the roads clear, for example, requires snow-ploughs(扫雪机) and machines to spread salt. The reason why a country like Britain does not buy snow-ploughs is that they are used for a few days in any one year, and the money could be more useful in other things such as hospital, education, helping the old.According to the writer, Britain is a country _______.
| A．which has regular snow | B．which is not well prepared for snow |
| C．for which snow is a catastrophe | D．for which snow is a wonder |
After a few hours' snowing there are often some shortages of food because _______.
| A．shops have closed down | B．people buy as much as they can |
| C．farmers cannot produce any more | D．people eat more vegetables in winter |
The words “two kinds” in the passage mean the countries _______.
| A．which have weather as yearly happening to celebrate or as rare (少见) weather |
| B．which either have heavy snow or light snow |
| C．to which snow either causes problems or no problems |
| D．which either have snow-ploughs or no snow-ploughs |