I believe that my country，Poland，is a perfect example for a place where food is particularly important. When we were little children, we began to understand how much a loaf of bread meant to our parents—to some it might sound silly but for me the custom of kissing bread before you started cutting it was simply amazing. It's not so common nowadays to treat food that way，since you hardly ever bake your own bread. Besides, everyone would call you crazy if you tried to kiss every bread roll before you ate them! But though we no longer make our food from scratch (起点), some customs have been kept—that's why I feel so sorry every time I have to throw any food away—even though I no longer live with my parents and nobody would blame me for this anymore!

    Many people of our nation are still working as farmers, eating what they grow and harvest and therefore enjoying everything more. It's widely known that you value more anything that needs your effort in the first place. In most homes in Poland, especially those of farmers, the whole family would try and have their meals together—extremely difficult now, but so rewarding! You can share other members' troubles and successes, give your children some attention, or just sit down for a moment, instead of rushing through life aimlessly. Furthermore, your body，and stomach in particular will be very grateful for such a time!

    In Poland, a wedding，Christmas or even a birthday is celebrated with a great meal. Women in the house get together and cook ,sometimes for a few days before the event，and the extremely good or unusual food will be remembered and widely talked about.

    You cannot over-value the importance of food in the country. What's more, almost everyone in Poland will be as interested in the topic as I am.

Marco Polo

    Marco Polo was born in Italy in 1254. A traveller and businessman, he was one of the first Europeans to travel across Asia and into China. His journey lasted 24 years.

    He set out, aged 17, with his father Nicolo and his uncle Maffeo on their great journey to China. They sailed south from Venice, Italy and stopped off in the Middle East. They ofen carried on overland to Persia (now Iran), through the Pamir Mountains and the Gobi Desert before they got to Beijing, China.At that time, China was more advanced than Europe. They already had paper, so large numbers of books were available. They also used paper money in many parts of the country.

    After he got back to Italy, Marco Polo talked about his experiences in China, and he wrote a book describing the riches of Asia. His book was the first western record of porcelain(瓷器), coal, gunpowder, printing and silk.Unfortunately, not many people believed Polo's stories and he became known as “the man of a million lies”. He died in 1324.

Jacques Cousteau

    Jacques Cousteau was a French undersea explorer, environmentalist and inventor. He was born in France in 1910. When he was young, he was attracted by the sea, machines and filmmaking. In the French navy, Cousteau began exploring underwater and worked on a special breathing machine which allowed divers to stay underwater for several hours. This gave them time to really look around under the ocean. In 1948, Cousteau began travelling the world's oceans in his research ship Calypso.Cousteau produced many films and books about his underwater experiences, including the TV series The Underwater World of Jacques Cousteau, which introduced the public to the world of sharks, whales, dolphins and treasure.

    Cousteau started the Cousteau Society to protect ocean life. In 1989, he received a great honour: he was made a member of the French Academy. Finally, after a long and varied life, Cousteau died on 25^th June, 1997.

    Although his 1-year-old smart-phone still works perfectly, Li Jijia already feels the need to replace it.

    "There are many better ones available now. It's time to upgrade(更新）my phone."

    Li's impatience is shared by many. Shortly after the season when new products are released（发布，发售）, many consumers feel the urge to upgrade their electronic equipment, even though the ones they have still work just fine.

    As consumers' minds are occupied by Apple's newly released products and debate whether the Google tablet is better than the new Amazon Kindle, it might be time to take a step back and ask: "Do we really need the latest upgrades?"

    According to Donald Norman, an American author, "planned obsolescence (淘汰）" is the trick behind the upgrading culture of today's consumer electronics industry.

    Electronics producers strategically release new upgrades periodically, both for hardware and software, so that customers on every level feel the need to buy the newest version.

"This is an old-time trick—they're not inventing anything new," Norman said. "This is a wasteful system through which companies--many of them producing personal electronics—— release poor-quality products simply because they know that, in six months or a year, they'll put out a new one."

    But the new psychology of consumers is part of this system, as Norman admitted, "We now want something new, something pretty, the next shiny thing." In its most recent year, Apple's profit margin(利润) was more than 21 percent. At Hewlett-Packard, the world's biggest PC maker, it was only 7 percent.

    Apple's annual upgrades of its products create sales of millions of units as owners of one year's MacBook or iPhone line up to buy the newest version, even when the changes are slight.

    As to Li Jijia, the need for upgrading his smart-phone comes mainly from friends and classmates. When they are switching to the latest equipment, he worries about feeling left out.

    "Some games require better hardware to run," said Li. "If you don't join in, you lose part of the connection to your friends."

    In the years ahead, AI will raise three big questions for bosses and governments. One is the effect on jobs. Although bosses publicly praise the broad benefits AI will bring very much, their main interest lies in cutting costs. One European bank asked a technology company to find a way of reducing the staff in its operations department from 50,000 to 500. This special report has shown that AI-enhanced tools can help reduce staff in departments such as customer service and human resources by a large amount. The McKinsey Global Institute finds that by 2030 up to 375m people, or 14% of the global workers in companies or countries, could have their jobs automated away. Bosses will need to decide whether they are prepared to offer and pay for retraining, and whether they will give time off for it. Many companies say they are all for workers developing new skills, but not at the employer's expense.

    A second important question is how to protect privacy as AI spreads. The Internet has already made it possible to track people's digital（数字的）behaviour in extremely small detail. AT will offer even better tools for businesses to monitor consumers(客户) and workers, both online and in the physical world. Consumers are sometimes happy to go along with this if it results in personalised（个性化的）service. But AI probably brings privacy violations (侵犯) that are seen as shocking and morally unacceptable. In the wrong hands, useful technology could be against fair and equal treatment. Countries with a record of the careful watching of a person place, especially by the police or army and human-rights abuses already using AI to monitor political activity. The police around the world will use AI to spot criminals, but may also look on ordinary citizens secretly, in order to discover things or find out information about them. New rules will be needed to ensure agreement on what degree of monitoring is acceptable.

    The third question is about the effect of AI on competition in business. Today many firms are competing to provide AI-enhanced tools to companies. But a technology company that achieves artificial intelligence could race ahead of competitors, put others out of business and lessen competition. This is unlikely to happen in the near future, but if it did it would be of great concern.

    There are always stories in the life that can hardly be forgotten and will restore our hope for holidays every time we recollect.

    Johnny and I, along with our two young sons, Barry and Doyle, lived in a village in southern Alabama in 1979. We had bought the boys a bicycle for the New Year, and had hidden it in the garage ,where Johnny would assemble (组装)it on New Year⁵ s Eve after the kids fell asleep. But that day, Johnny had to go to Brookley Air Force Base in Mobile, an hour away, to repair a jet. I had my hands busy with baking, preparing for holiday dinner and caring for two energetic boys.

    Just as I was making the chocolate cake, a neighbor knocked on the door. It was Beatrice, who was the only person on our road with a telephone. The base had called to say that a heavy tool had come apart suddenly, hitting Johnny's arm and breaking the bone. My brother Otto took me to the base hospital while my mother stayed with the children.

    We got there to find Johnny with a cast (石膏)on his arm, anxious to get home regardless of the doctor's orders. It was New Year's Eve, Johnny argued, and he had the bike to assemble for his boys. The doctor said he'd consider dismissing him the next morning if Johnny could find someone to drive him home. On New Year's morning, Johnny called the base and was told everyone was off duty; there was no one to drive him home. Johnny kept making calls. At last, a big blue car with the Air Force sign rolled up.

    I was putting dinner on the table when hearing the car. We were thrilled to see Johnny assisted by a uniformed Air Force officer. With Otto's help, Johnny assembled the boy's gift, and they all had a good time that afternoon. Our hearts were full of gratitude to the people who had gone the extra mile to bring us together.