People who enjoy a dream-filled sleep are better at recalling information and making links between facts when waking. But recharging with a shallow (小睡) offers no such mental improvement, the research suggests. The results of the study added to the growing body of evidence that Rapid Eye Movement (REM) sleep is very important to the brain’s ability to form strong memories.
An average night's rest includes four or five spells of REM sleep, but these bursts tend to be lengthier towards the end of the night. This means adults getting less than the recommended seven to eight hours a night -- and therefore inadequate REM sleep -- may be damaging their mind's ability to memorize: Although REM sleep is not classified as a type of deep sleep, it is only reached after the brain has passed through deep sleep stages.
In the recent study, participants were shown groups of three words and asked to find another word that can be associated with all three words. They were tested once in the morning and then given the same task again in the afternoon. In between, some were allowed a nap with REM sleep, some a nap without REM sleep, while the others had a quiet rest period. The quiet rest and non-REM sleep groups didn't improve, but the REM sleep group improved on their morning performance by an average of almost 40 per cent. Dr Sara Mednick, a sleep researcher at the University of California who led the study, believes the formation of connections between previously unassociated information in the brain occurs during REM sleep.
It is believed that sleep acts as a sort of mental filing system, enabling the brain to sort relevant information from useless information. This process may take place as memories are removed hem one art of the brain to others.

“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.
【小题1】What kind of things will go to a yard sale?

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 we all know, _____ life is a big stage, on which _____things of all kinds can take place.

A．不填；不填       B．the；不填         C．the； the         D．不填；the

Directions:  Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

As infants, we can recognize our mothers within hours of birth. In fact, we can recognize the   【小题1】 of our mother’s face well before we can recognize her body shape. It’s   【小题2】  how the brain can carry out such a function at such a young age, especially since we don’t learn to walk and talk until we are over a year old. By the time we are adults, we have the ability to distinguish around 100,000 faces. How can we remember so many faces when many of us find it difficult to   【小题3】  such a simple thing as a phone number? The exact process is not yet fully understood, but research around the world has begun to define the specific areas of the brain and processes   【小题4】  for facial recognition.
Researchers at the Massachusetts Institute of Technology believe that they have succeeded in   【小题5】  a specific area of the brain called the fusiform face area (FFA), which is used only for facial recognition. This means that recognition of familiar objects such as our clothes or cars, is from   【小题6】  in the brain. Researchers also have found that the brain needs to see the whole face for recognition to take place. It had been   【小题7】  thought that we only needed to see certain facial features. Meanwhile, research at University College London has found that facial recognition is not a single process, but   【小题8】  involves three steps. The first step appears to be an analysis of the physical features of a person’s face, which is similar to how we scan the bar codes of our groceries. In the next step, the brain decides whether the face we are looking at is already known or unknown to us. And finally, the brain furnishes the information we have collected about the person whose face we are looking at. This complex   【小题9】  is done in a split second so that we can behave quickly when reacting to certain situations.

Summer Holiday Fun 2010 !
The summer holidays are upon us again. Here is our guide to summer holiday fun in Peterborough!
Peterborough Museum
The Age of the Dinosaurs’is the museum’s main attraction this summer．Get up close to prehistoric creatures via some great hands—on exhibits! Watch out for monsters lurking around every ember! The museum is open from 10：00am to 5：00pm Monday to Saturday，and from 12：00pm to 4：00 pm on Sundays in August．
Call 01733 864663 for details
Saxon Youth Club
School holiday fun：Young people aged 13—19 will be able to produce their own music, compete in spots activities，or try their hand at cooking at Saxon Youth Club，Saxon Community Centre, Norman Road．Peterborough every Monday and Wednesday from 3：00pm．PLUS an aero ball tournament will take place on Thursday 12th August between 3：30pm and 6：30pm．
Call 01 353 720274 for details
Houghton Mill   
Alice through the Looking Class—a new production of the family favorite on Monday 30th．August．Bring rugs or chairs to sit on and a picnic if you wish to eat during the play．Gates open 5：30pro，performance 6：30pm—8：30pm．Tea room will be open until end of the interval．Adult ￡10．Child￡7．Family ￡20．
Booking advisable on 0845 4505157．
Farmland Museum and Denny Abbey
Farmland Gaines：From Wellie Wanging to Pretend Ploughing matches，come and join the Farmland Team．Collect your sporting stickers and create a colorful rosette that is fit for a winner！No need to book，just turn up between 12：00pm and 4：00pm on Thursday 19th August Suitable for children aged four and above，each child should be accompanied by an adult and all  
activities are included in the normal admission price Tickets Cost￡7 per child．
For further information，call 01223 810080．
【小题1】If you are interested in cooking, you can go to         .