When I left my bag on a train, I lost my most precious possession, a small framed photograph of my great grandparents, Emily and Gordon Baker. The frame was made of silver, with an elegant flower design in one corner. The photograph was taken in March 1939 0n their wedding day. Emily looked very happy, and Gordon looked rather a larmed.  A few months later, he was killed in action in North Africa. I received the photograph when my aunt Mabel died.

    I'm a student at Edinburgh University and I live in an old Edwardian house.  At the end of last term, I packed a large bag and a small bag and set off for London, where I was planning to catch the Eurostar train to Paris. Minutes after getting off the train at Kings Cross Station, I realized that I'd left the small bag in the overhead luggage rack. I ran back to the train, but it had already left the platform. www..com

    This all happened several months ago, and I had become resigned to the loss of my most precious possession. then last week, something extraordinary happened. I logged onto the site ~ eBay and looked for a silver photo frame and I found it ! The photo of my great grandparents was on eBay !

    I called the person who was advertising it.   He was a little suspicious(怀疑 )  at first, and told me that he had bought it from a stall at an antique market. After we talked for a while, he asked if there was any way I could prove it was mine. All I could think of was that the photo was taken in March 1939. He opened the frame and made sure that this date was written by hand on the back of the photograph.

    “It's definitely yours. " he said.  "Come and get it ! "

    Teenagers who spend hours in front of the television may have a poorer diet as young adults.

    A study, which included nearly 1,400 high school students, found those who watched TV for five hours or more per day had less healthy diets than peers(同龄人) five years later. Why does this happen? Should the parents take any measures?

    On the one hand, people who spend a lot of time in front of the TV, especially teenagers, may snack more, and that may affect their long-term diet quality.

    On the other hand, TV ads for fast food, sweets and snacks tempt teenagers to eat more of those foods. And TV time might also replace exercise time for some kids.

    Lead researcher Dr. Daheia J. Barr-Anderson, of the University of Minnesota in Minneapolis, told Reuters Health a clear correlation between TV time during high school and diet quality in young adulthood. While the heaviest TV viewers were eating the most junk food, those who'd watched less than two hours per day had the highest intake(吸收) of fruits, vegetables, whole grains and high-calcium food. In her opinion, parents should limit and monitor TV viewing.

    As far as I am concerned, children should watch no more than two hours of television per day. And parents should set a good example by eating right, being physically active and curbing their own TV time.

    Your next ca might drive itself. After years of trials on city streets, driverless vehicles are now nearing the live phase. Last moth, a driverless bus began carrying passengers through Lyon, France, Most in the automobile industry think self-driving vehicles will be on the road by 2020 or before.

    Driverless cars will at first be huddled with human-driven cars. But the first places where they will become dominant（统治的）are dense urban areas — precisely the spots most damaged by the automobile age. Many advanced cities are already reducing the role of human-driven cargo. Driverless cars will quicken that process and will bring us enormous benefits.

    Driverless cars will reduce accidents by around 90 percent. That's big—the annual death toll on the world's roads is about 1.2 million a year. Pollution and carbon emissions will drop, because urban driverless cars will be electric. The old, otherwise they would stay at home most of the time and the disabled and teenagers will suddenly gain mobility.

    On the other hand, driverless cars will bring catastrophe. The best thing about the automobile age was that it employed tens of millions of people to make, market, insure and drive vehicles. Over the next 20 years, the mostly low-skilled men who now drive trucks, taxis and buses will see their jobs reduced. Carmakers are especially scared. The few cars of the future might be made by tech companies such as Apple, Baidu and Google. Imaging the impact on Germany, where the automotive sector is the largest industry.

    Dramatic change is coming, and driverless cars could arrive by 2020. But governments have barely begun thinking about it. Only 6 percent of the biggest US cities have factored them into their long-term planning.

    A decade ago anyone hardly saw the Smartphone coming. It has bought an epidemic of mass addiction. Let's hope we do a better job of handling the driverless car.

    A warm drink of milk before bed has long been the best choice for those wanting a good night's sleep. But now a study has found it really does help people nod off—if it is milked from a cow at night.

    Researchers have discovered that “night milk” contains more melatonin (褪黑激素), which has been proven to help people feel sleepy and reduce anxiety.

    The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night.

    Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.

    Night milk quickened the start of sleep and caused the mice to sleep longer.

    While the effect of cows milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.

    Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

    Milk is also sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening. The more fat you take in before bedtime, the greater burden you will put on your body at night.

    There was a man playing the piano in a bar. He was a good piano player and always performed in this bar. People came in just to hear him play. But one night, a customer told him that he didn't want to hear him just play the piano any more. He wanted him to sing a song.

    The man said, "I don't sing." But the customer was persistent(执着的). He told the bar manager, "I'm tired of listening to the piano. I want that man to sing!" The manager shouted across the room, "If you want to get paid, sing a song. Our customers are asking you to sing！" So he did. He sang a song. A piano player who had never sung in public did so for the first time. And everyone was surprised by his song Mona Lisa. He got lots of applause(掌声) that night.

    He had such a talent for singing, but he just had been sitting on his talent for the past years! If without such a chance, he may have lived the rest of his life as a no­name piano player in a no­name bar. However, now he has become one of the best­known singers in America.

    You, too, have skills and abilities. Maybe your "talent" is not as great as the singer above, but it may be better than you think! And with effort, most skills can be improved. So, in your life, you should be brave enough to try doing different things and find out what talents you really have!

    Put an ice cube(小冰块) from your fridge into a glass of water. You have a piece of string(线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers (手指).

    You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.

    First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze(冻结) again.

    After a minute or two you may raise(提起) the piece of string and with it you will raise your piece of ice!

    This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don't put enough salt, the water will freeze again.