Part of the fun of watching sports events is following an exciting rivalry (竞争关系).

    But where do all these rivalries come from?

    Some rivalries start because athletes spend a lot of time close to opponents (对手).

    Other rivalries get personal. Things that one rival says that are thought to be not respectful to the other can cause a rivalry, even if the words are misunderstood. And sometimes, rivalries grow just because the athletes don't like each other's personalities.

    Some sports may also be more likely than others to cause rivalries. “Some sports only meet a few times, so there is less chance for rivalries to build,” For example, in sports where athletes perform on their own, such as diving, rivalries might also take longer to appear than in sports in which athletes compete at the same time. But in tennis, players often face each other, and rivalries are more likely to happen.

    So do the rivalries do good or harm to the athletes?

    Some believe that rivalries can be a good thing because they encourage athletes to try harder to win. But rivalries can also become too personal, taking athletes' attention away from their sports.

    Keegan agreed that rivalries often do athletes more harm than good. “They can be a huge distraction (分散注意力的事) and lead to focusing on the opponent more than the game,” he said.

    “Top athletes often have physical and mental training that they follow in order to worry less and prepare to compete”, Gould further explained. An important part of that preparation is preventing from distractions, including rivalries.

    “The better athletes don't care too much about a rivalry – they try to treat every competition the same,” Gould told LiveScience.

    October 15th is the Global Handwashing Day. Activities are planned in more than 20 countries to get millions of people in the developing world to wash their hands with soap（肥皂）. For example, donators（捐献者）will give 150,000 bars of soap to schools in Ethiopia.

    Experts say people around the world wash their hands every day, but very few use soap at so-called important moments. These include after using the toilet, after cleaning a baby and before touching food.

    Global Handwashing Day is the idea of the Public-Private Partnership for Handwashing with Soap. Partners include the United Nations Children's Fund, American government agencies, the World Bank and soap makers Unlever and Procter and Gamble. The organizers say all soaps are equally effective at removing disease-causing germ（细菌）. They say the correct way to wash is to wet your hands with a small amount of water and cover them with soap. Rub it into all areas, including under the fingernails. Rub for at least twenty seconds. Then rinse well under running water. Finally, dry your hands with a clean cloth or wave them in the air.

    The Partnership for Handwashing says soap is important because it increases the time that people spend in washing hands. Soap also helps to break up the dirt that holds most of the germs. And it usually leaves a pleasant smell. The Partnership for Handwashing also says washing with soap before eating or after using the toilet could save more lives than any vaccine（疫苗）or medicine. Hand washing could also prevent the spread of other diseases. When people get germs on their hands, they can infect（传染）themselves by touching their eyes, noses or mouths. Then they can infect others.

    A mystery surrounds my grandmother's collection of salt cellars (盐瓶). No one in the family seems to know when she started collecting them, or exactly how many she had.

    My grandmother died just over two years ago. At 91, she had spent 30 years without her right leg, which was removed due to cancer the year I was born. She was a poet, an artist, a food lover and a salt cellar collector. The funny thing about the salts, as she called them — I never once heard her say salt cellar — was that although everybody knew they were her hobby and everyone was always searching for them at yard sales or in stores, nobody seemed to know what they meant to her and they just wanted to make her happy. Grandma kept her salts in a dark wooden corner display case in the living room. Since her death the case has remained exactly as she left it. Grandpa tries his best to preserve his memories of her just as they are.

    Now I am collecting, too. Collecting memories about my grandmother's hobby, a way she spent her time. And as I hold one of them in my hand, I picture her holding it in her hand on the day she got it. She is smiling. My mother and her two sisters all have small collections, but my mother admits that she was more interested in finding salts to send to Grandma.

    Grandma once wrote a poem titled “When April Comes”. The poem contains the line, “When April comes and I am not around, remember me when daffodils are found.” Now, Grandpa is working on a poem with the line, “April came and you were not around”.

    But she was, somehow. She was there in the memories left behind by her possessions.

    China's box office numbers continue to grow rapidly. It is estimated that the revenues(收入) may pass the U. S. market's as soon as this year. However, this cinematic party could be over just as it's getting started. Some companies are working to convince consumers that the ultimate viewing experience is not on the big screen.

    Instead, it's on the small ones that are already in their pockets-thanks to the technology of virtual reality.

    Already, VR experience centers are popping up in major cities like Beijing and Shanghai. They give customers the opportunity to watch VR movies or play VR games for about the same price as a discount movie ticket. Online video sites, meanwhile, are also moving into the VR field. Some of them, like Youku, have launched(推出) their own VR apps and channels.

    China has more than 700 million smartphone users. A large percentage of them are already more than willing to download and watch TV shows and even full-length movies on their handsets. This potentially makes them more likely to embrace VR content than Americans and Europeans.

    But in fact, it's not just Chinese companies and video websites that believe VR will pull viewers away from movie theaters. International production companies that, for years, have made block busters (大片) for cinema audiences are also warning that disruptive change is around the corner.

    Maureen Fan, chief executive of the Silicon Valley VR start-up Baobab Studios, after bringing her company's animated VR short Invasion to the Shanghai International Film Festival last year, concluded that the field had been evolving much more rapidly than she expected. "What I thought would take ten years has happened in one or two," she said. However, she also noted that the industry needs more people who can create great stories to move VR beyond a niche product(小众产品 ) and into the mass market. "The technology is already there. What continues to be lacking is good content," Fan said. "There's a certain amount, but we would love to see more."

Libraries

    Public libraries

    Most towns in Britain have a public library. A library usually has a large selection of books and other resources, which library members can use and borrow for free.

    Britain's First Public Library

    The first public library in Britain opened in Manchester in1852. It's first librarian was a man called Edward Edwards, Edwards attended the library's opening ceremony and two famous writers called Charles Dickens and William Thackeray were there too.

    How to Join a Library

    To join a library, go to your local library and fill in a form. You'll receive a library card which is needed when using library services.

    Mobile Libraries

    Not everyone can get a library. Some people live far away from towns and cities. Other people find it difficult to go out because they have an illness or a disability. Thanks to mobile libraries, these people can still borrow books.

    Unlike most libraries, which store books in buildings, mobile libraries usually keep their books in a mini-bus. The back of the mini-bus has shelves for the books, and it is big enough for borrowers to step inside and look around. A driver takes the mini-bus to a certain place at a certain time, so people know when to expect it. They can then return their books and borrow some more.

    All Aboard the Library!

    A school in London didn't have space for a library inside the building. However, everybody agreed that it was still important to have a school library. So the head of the school, Graham Blake decided to park an old bus on the school car park and changed it into a library. Pupils helped to paint the bus, and after eight months, the new library was ready.

    Here are some professions Americans consider to be the most honest. Maybe the rest of us can learn from what these people do to establish good relationships with others.

    MEDICAL DOCTORS

    Jack Jacob, Age: 44, Fountain Valley, California

    I try to introduce myself in a pleasant way. I sit down. I don't stand. I make good eye contact with the patient and his or her family. Communication skills are key, as well as showing understanding and availability. For a physician, the most rewarding thing is when someone who has seen your work chooses you.

    ENGINEERS

    Chrissy Keane, Age: 41, Crofton, Maryland

    I don't know that being an engineer means you are automatically trustworthy. However, I do think that most engineers like to follow rules and be organized. They tell you what they think, whether you want to hear it or not. Those are important elements in building trust.

    POLICE OFFICERS

    G. M. Cox, Age: 64, Fort Worth, Texas

    As a police officer, I have the best interests of the people I serve in my heart and in my actions and I'm going to treat everyone the same way. I always want to go up to people and speak to them with respect. Don't talk down to them. You have to establish and maintain that trust. Be equal!