Are you preparing for a big test? If so, you may want to go to play some basketball in between hitting the books. Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Judy Cameron, a scientist at Oregon Health and Science University, studies brain development. According to her research, it seems that exercise can make blood vessels (血管), including those in the brain, stronger and more fully developed. Dr. Cameron is sure that this allows people who exercise to think better. As she says, “While we already know that exercise is good for the heart, exercise can actually cause physical changes in the brain.”

The effects of exercise on brain development can even be seen in babies. Babies who do activities that require a lot of movement show greater brain development than babies who are less physically active. Even a little movement can show big results. Margaret Barnes, a scientist, also believes in the importance of exercise. She thinks that many learning disabilities that children have in primary school or high school can result from a lack of movement as babies. Babies need movement that encourages and excites their five senses. They need to set up a connection between motion and memory. In this way, as they get older, children will begin to connect physical activity with higher learning,” says Margaret.

    Older people can develop their brains as well. Cornell University studied a group of seniors who have a short-term memory increase of up to 40 percent after exercising just three hours a week. The exercise does not have to be very difficult, but it does have to increase the heart rate. Also, just like the motion for babies, exercise for older people should not be too simple. Learning some new skills or actions, such as with yoga or tat- chi helps to open up memory paths in the brain that may not have been used for a long time. For most people, any type of physical activity that increases the heart rate is helpful. The main aim is to increase the brain's flow of blood. And your brain can benefit from as little as two to three hours of exercise a week.

    At the beginning of the century there was a big farm called Hollywood Ranch. It was near Los Angeles in California. A few years later Hollywood was one of the famous places of the world. From 1910s to the 1950s Hollywood was the film center of the world. Every family knew the names of its film stars Charlie Chaplin, Grete Garbo, Bergman and hundreds more.

    The reason why people went to Hollywood to make films was the sun. At first people made films in New York on the east coast of the United States. But then they heard about Los Angeles where there are 350 days of sun every year. As they made all the films by sunlight, the west coast was a much better place to work.

    Also near Hollywood you can find mountains and sea and desert. They did not have to travel far to make any kind of film.

    When TV became popular in the 1960s, Hollywood started making films for television. Then in 1970s they discovered people still went to cinema to see big expensive films. After twenty years they are still making films in Hollywood and people watch them all over the world.

    One day, a poor man, who had only one piece of bread to eat, was walking past a restaurant. There was a large pot of soup on the table. The poor man held his bread over the soup, so the steam from the soup went into the bread, and gave it a good smell. Then he ate the bread.

    The restaurant owner was very angry at this, and he asked the man for money, in exchange for the steam from the soup. The poor man had no money, so the restaurant owner took him to Nasreddin, who was a judge at that time. Nasreddin thought about the case for a little while.

    Then he took some money from his pocket. He held the coins next to the restaurant owner's ear, and shook them, so that they made a dingling (叮当声) noise.

    “What was that?” asked the restaurant owner.

    “That was payment for you,” answered Nasreddin.

    “What do you mean? That was just the sound of coins!” said angrily the restaurant owner.

    “The sound of the coin is payment for the smell of the soup,” answered Nasreddin. “Now go back to your restaurant.”

    These days, I walk down the steps leading toward the south end of the All England Club in Wimbledon, and still look for the Crow's Nest, a small green observation tower with an outer ladder that I used to climb on for a wide view of the grounds, but which has since been knocked down.

    The Crow's Nest was a particularly useful point, because it allowed a tennis writer to keep track of the action on as many as 10 outside courts at a time. At days end, reporters from different nations would share notes on what they had observed all over the grounds.

    Twenty-seven years later, the press room has touch screens that allow us to watch live videos from any court, and even go back to watch key moments in key matches long after they have finished. You could cover Wimbledon without leaving your seat. But that is a bit like spending all your time ordering room service and looking up fun facts on Wikipedia.

    More than at any other tennis tournament, there is also an appetite for stories that deal with the setting, the history and the traditions.

    If they change the price of the fish tacos (鱼肉卷饼) at the United States Open, it's not a story. If they change the price of the strawberries and cream, the signature treat at Wimbledon. It's time to email your editor using capital letters.

    The new retractable (可伸缩的) roof was put in place in 2009. Until then, you always had to have a rainy-day story in your notebook because there were no guarantees any matches would be played. Now tennis is a sure thing on Centre Court, which has made tennis reporters a bit less creative. But at least it guarantees us daily access to the most atmospheric place in the sport.

    So much has changed, but Centre Court remains true to its original spirit: more a theater than a stadium. Catching that feeling is part of covering Wimbledon, too.

    A lot of kids have dreams they will never achieve due to the limitations of their little bodies. They want to fly, or to become a dinosaur, or to learn how to shoot webs out of their fingers like Spiderman.

    Luka Tavcar, 12, has muscular dystrophy(萎缩) and is totally dependent on his wheelchair. Nevertheless, late last year, he had an inspired plan: to be photographed walking around and having fun.

    He approached Matej Peljhan, an amateur photographer and a psychologist at CIRIUS rehabilitation(康复) center near Ljubljana, Slovenia, where Luka is a patient.

    At first, Peljhan was perplexed. How could he photograph a boy who can not move or act in motion? "Luka wanted to see himself playing and having fun, but it seemed impossible," he says.

    Then Peljhan had a brainstorm: Luka could lie down on a piece of cloth and, with the help of an assistant, Peljhan would pose the boy as if he were jumping, climbing stairs, moving downhill on a skateboard, and playing basketball. Then Peljhan would shoot these images from above. The photos took about a month to produce; all were shot early this year.

    Peljhan, who lost his right arm and left eye as a child, says his disabilities motivated him to make the photographs. "I understand people with limitations," he says.

    He named the series the little Prince after the French story by Antoine de Saint-Exupery in which a boy teaches a man about trust, hope and friendship. Luka loves the photos.

    Peljhan himself understands what it is like to live with limitations- he lost his right arm and left eye as a child. "He wants to stay positive," the photographer explains. "Luka's imagination helps him forget his phisical limitation", says Peljhan. "He's fragile, but he can see the world differently."

    A young woman carrying a three-year-old child got on a bus. The conductor hurried to give her a warm welcome and then kindly asked the other passengers to make more room for the woman and her child. On seeing this, people were surprised and began to talk. "You know this conductor used to be very rude. Now suddenly he has changed his bad behavior, "said a middle-aged man.

    "Yes, he should be praised and we must write a letter to the company," said a second passenger. "That's right," another lady said, "I wish a newspaper reporter were here so that more people could learn from this conductor.”

    Just then a gentleman who looked like a teacher turned to the conductor and said, "Excuse me, but can I know your name, please? Your excellent service must be praised."

    Before he could open his mouth, the three-year-old child sitting on the young woman's lap interrupted, "I know his name. I call him Dad."