What would it take to persuade you to exercise? A desire to lose weight or improve your figure? To keep you away from diseases? To live to a healthy old age? You'd think any of those reasons would be enough to get Americans exercising. Yet a vast majority of Americans have thus far failed to swallow the "exercise pill".

    Now a research by psychologists strongly suggests it's time to think of current well-being（幸福）and happiness as motivators for exercise instead of future health, weight loss and body image.

    Dr. Segar, one of the researchers, believes that immediate rewards are more motivating than distant ones. "People who say they exercise for the quality of life exercise more over the course of a year than those who say they value exercise for its health benefits." He said. '

    Other studies have shown that what keeps people moving depends on age, sex and life circumstances. For those of college age, physical attractiveness typically heads the list of reasons to begin exercising, although what keeps them going seems to be the stress relief that a regular exercise program provides. The elderly, on the other hand, may get started because of health concerns. But often what keeps them exercising are the friendships and sense of community that may otherwise be missing from their lives. Improving daily well-being is the most influential factor for the women. Men indicate they are motivated by more distant health benefits, but this may be because men feel less comfortable discussing their mental health needs.

    "Exercise should be encouraged but the emphasis on weight loss, disease prevention and healthy aging should be reduced." Dr. Segar concluded. "Exercise can make people feel more energetic, less stressed and, yes, happier."

    What's small, buzzes here and there and visits flowers? If you said bees or hummingbirds, you got it. You wouldn't be the first if you mixed the two up. Now a group of researchers even say we should embrace our history of considering the two together in the same group. The way scientists study bees could help them study hummingbird behavior, too.

    Scientists first compared the two back in the 1970s when studying how animals search for food. The idea is that animals use a kind of math to make choices in order to minimize the work it takes to earn maximum rewards. Researchers at the time focused on movement rules, like the order in which they visited flowers, and where flowers were located relative to others .It was “almost like an algorithm（算法）”for efficient searching, said David Pritchard, a biologist at the University of St. Andrews in Scotland. Hummingbirds and bees had similar solutions.

    As the field of animal cognition（认知）appeared, hummingbird and bee research parted. Neuroscientists and behavioral ecologists developed ways to study bee behavior in naturalistic settings. Hummingbird researchers compared hummingbirds to other birds and borrowed methods from psychology to study their ability to learn in the lab. To be fair, hummingbirds and bees differ. For example, hummingbirds have more advanced eyes and brains than bees. Honeybees and bumblebees are social; hummingbirds typically aren't.

    But however they perceive（感知）or process information, they both experience similar information, Dr. Pritchard said. In day-to-day searching for food, for example, hummingbirds may rely on more of a bee's-eye view than a bird's-eye view. Like other birds, they rely on landmarks, distances and directions to make maps when travelling long distances, but they don't use these cues to find flowers. Move a flower just an inch or so away from where a hummingbird thought it was and it will hover over the flower's original location. Dr. Pritchard is investigating if, like bees, hummingbirds engage in view matching — hovering, scanning snapshots of a place to its memory and using those as references later.

    Many experts say that Billy Wilder changed the history of American movies. He is often called the best movie maker Hollywood has ever had, known for making movies that offered sharp social comment.

    Between the 1930s and the 1980s, Billy Wilder made almost fifty movies. During that time he received more than twenty nominations from the Academy of Motion Picture Arts and Sciences. He won six of the Oscar awards. His movies have been seen by people around the world, like “Sunset Boulevard”, “Some Like It Hot”, “The Lost Weekend”, “The Apartment”, and “The Seven Year Itch”.

    Samuel Wilder was born in 1906 in the former Austro-Hungarian Empire. His mother had enjoyed spending several years in the United States when she was young. So she called him Billy because she thought it sounded American. Billy Wilder started law school in Vienna, Austria. Then he decided not to become a lawyer. Instead, he began reporting for a Vienna newspaper. By the 1920s, he was writing movies in Germany.

    However, the Nazis had risen to power in the nation. Wilder was Jewish, and he recognized that he had no future in Nazi Germany. In 1933, he went to Paris. There he directed a movie for the first time. It was called “The Bad Seed”. Then he received word that producers in the United States had accepted one of his scripts. Billy Wilder left Europe for America.

    Billy Wilder had only eleven dollars when he arrived to settle in the United States in 1934. He decided to live in the center of American movie making, Hollywood, California. Then he formed a writing team with Charles Brackett. The two writers created many successful films together. Wilder always praised this man as a friend and teacher whose humor and expert direction greatly influenced his work.

    In his love stories, Billy Wilder did not follow the Hollywood tradition of sweet boy-meets-girl situations. He had an unusual way of showing relations between men and women. Wilder died in March, 2002. A current Hollywood producer said: “Billy Wilder made movies that people will never forget.”

    I've loved my mother's desk since I was just tall enough to see above the top of it as mother sat doing letters. Standing by her chair, looking at the ink bottle, pens and white paper, I decided that the act of writing must be the most wonderful thing in the world.

    Years later, during her final illness, mother kept different things for my sister and brother. "But the desk," she said again, "is for Elizabeth."

    I never saw her angry, never saw her cry. I knew she loved me; she showed it in action. But as a young girl, I wanted heart-to-heart talks between mother and daughter.

    They never happened. And a gulf opened between us. I was" too emotional". But she lived "on the surface".

    As years passed and I had my own family. I loved my mother and thanked her for our happy family. I wrote to her in careful words and asked her to let me know in any way she chose that she did forgive me.

    I posted the letter and waited for her answer, none came.

    My hope turned to disappointment, then little interest and, finally peace. It seemed that nothing happened. I couldn't be sure that the letter had even got to Mother. I only knew that I had written it, and I could stop trying to make her into someone she was not.

    Now the presence of her desk told me, as she'd never been able to, that she was pleased that writing was my chosen work. I cleaned the desk carefully and found some papers inside—a photo of my father and a one-page letter, folded and refolded many times.

    Give me an answer, my letter asks, in any way you choose. Mother, you always choose the act that speaks louder than words.

    Sports can help us a lot. Taking exercises can make us strong. In collective（集体的）sports like basketball, volleyball or football, we will learn the importance of cooperation(合作). And sports can also help us relax after work or study.

    However, as the saying goes, "there are two sides of everything." Sometimes we may hurt other players or ourselves if we are not careful enough when participating(参加) in sports activities. What's more, too much or hard practice can be bad for our health.

    Sports can make us healthy both physically and psychologically(心理地). It is also a good way for people to know each other and can improve friendship between people. So long as we are careful enough, sports can do us nothing but good.