Dogs are likely to have complex emotions such as jealousy(嫉妒)and pride, according to a new scientific research.

    Dogs feel very jealous when they find that they are unfairly treated. And they do not like seeing their owners being kind to other creatures, especially other dogs. They often react negatively(消极地)when their owners bring home new pets, the research found. “Dogs show a strong aversion to unfair treatment,” Dr. Friederike Range of the Vienna University said.

    At first, people believed most animals lack(缺少)the “sense of self” , which is needed to experience so-called secondary emotions such as jealousy, embarrassment or guilt. These emotions are more complex than feelings such as anger or joy.

    Besides dogs research, another research includes cows, horse, cats and sheep, and all the results have shown that animals are far more self-aware than we thought.

    Dr Paul Morris, a psychologist at the University of Portsmouth who studies animal emotions, told The Sunday Times, “We are learning that dogs, horses, and perhaps many other species are far more emotionally complex than we ever realized. They can suffer simple forms of many emotions we once thought only primates (灵长类) could experience. ”

    In research among dog owners, Dr Morris found almost all of them reported jealous behavior by their pets. The dog often tried to keep their owner away from a new lover in the early days of a relationship.

    Behavioral experts suggest that owners should keep a close relationship with the dog as usual when a new pet or child comes along in order to prevent jealous activity from the dog such as interruptions with barking.

    Do you find it difficult to put down your mobile phone?

    If yes, you're not alone. These days, many people suffer from the stress of FOMO (fear of missing out). They reach of their mobile phones when they wake up in the morning, and for the rest of the day, they constantly check their social media apps for the latest updates.

    Despite the convenience smart phones bring, many people struggle with their digital habits. This is why Google introduced an app called Dashboard for Android operating system. This new app includes well-being functions that aim to help users manage the time they spend on their digital devices.

    It all starts with a bird's-eye view. Dashboard allows users to look at all the details of their phone habits. For example, a user can see how many times they're unlocked their phone and how many times they're checked their social media apps, as well as how much time they spend on each app every day.

    Once the users see this information, they'll be able to make some changes. With the App Timer function, users can set a time limit for how long they can use each app for every day.

    But even if users become more mindful of their usage, they're still likely to be drawn in by notification（通知）. Such feature automatically（自动地）silences incoming calls and notifications when a user puts their phone face down.

    If people truly want to make full use of their free time instead of losing hours using their smart phones, these new functions are just one way of doing that.

    The easiest answer would be just to use your willpower.

    One of the most exciting and interesting international cities to visit is London, England. Here is a look at four free things to do during a vacation to London.

    Visit the Trafalgar Square

    Built more than 200 years ago, Trafalgar Square is a popular gathering place for locals and travelers, too. The area is close to good shopping and dining opportunities, and there are usually some sorts of public events or celebrations going on there during most weekends.

    Wander Along the Thames

    Visitors wanting to see some great architecture, attractions and views should spend an afternoon walking along the River Thames. The best place to start is at the world-famous London Bridge crossing over the river and you can walk all the way to Westminster Bridge a short distance away. Travelers doing this will find themselves passing by a great many historic buildings.

    Explore the Local Markets

    While purchasing items at any of the open markets in London is not necessarily free, walking through them to view the merchants, their products and the other shoppers is of great fun. Some of the popular open markets in London worth visiting include Spitafields Market, Portobello Road Market and Leadenhall Market.

    Visit the British Museum

    One of the top museums in the entire United Kingdom can be found in London, and it charges no admission for entry. This museum is so highly regarded that it is not only popular with locals and tourists, it is also seen as a major and valuable scholarly resource.

    The Boy Made It!

    One Sunday, Nicholas, a teenager, went skiing at Sugarloaf Mountain in Maine. In the early afternoon, when he was planning to go home, a fierce snowstorm swept into the area. Unable to see far, he accidentally turned off the path. Before he knew it, Nicholas was lost, all alone! He didn't have food, water, a phone, or other supplies. He was getting colder by the minute.

    Nicholas had no idea where he was. He tried not to panic. He thought about all of the survival shows he had watched on TV. It was time to put the tips he had learned to use.

    He decided to stop skiing. There was a better chance of someone finding him if he stayed put. The first thing he did was to find shelter from the freezing wind and snow. If he didn't, his body temperature would get very low, which could quickly kill him.

    Using his skis, Nicholas built a snow cave. He gathered a huge mass of snow and dug out a hole in the middle. Then he piled branches on top of himself, like a blanket, to stay as warm as he could.

    By that evening, Nicholas was really hungry. He ate snow and drank water from a nearby stream so that his body wouldn't lose too much water. Not knowing how much longer he could last, Nicholas did the only thing he could he huddled (蜷缩) in his cave and slept.

    The next day, Nicholas went out to look for help, but he couldn't find anyone. He followed his tracks and returned to the snow cave, because without shelter, he could die that night. On Tuesday, Nicholas went out again to find help. He had walked for about a mile when a volunteer searcher found him. After two days stuck in the snow, Nicholas was saved.

    Nicholas might not have survived this snowstorm had it not been for TV. He had often watched Grylls' survival show Man vs. Wild. That's where he learned the tips that saved his life. In each episode (一期节目) of Man vs. Wild, Grylls is abandoned in a wild area and has to find his way out.

    When Gxrylls heard about Nicholas' amazing deeds, he was super impressed that Nicholas had made it since he knew better than anyone how hard Nicholas had to work to stay alive.

    With 830 students aged between 12 and 8, Lochaber High School, at Fort William, is one of the largest secondary schools in the Highlands, It covers a huge area and many of the students come from small communities (社区) and travel up to 40 km to get into school each day, In the past, the school covered a much larger area and many students had to stay in one of the school dormitories, or-if older to live with local families, but other high schools have opened in the West Highlands, so the catchment area（责任区域） for Lochaber High, though still very large, is not as large as it used to be. Students travel into school by car, by bus, or by special minibus each day, and some come on foot or by bike. Most students live in Fort William itself, or in one of the surrounding villages.

    At the end of their high school life, and after getting higher or advanced higher grade exam results, most students decide to move on to some form of further education. Some students can remain, taking specialised courses at the West Highland college, but most leave home in Lochaber and go south or east to cities, Many young people in this area feel that there are not enough opportunities here, Going to a city certainly means new friends, a whole new lifestyle, and a more exciting night life.

    Even though Fort William is, in a way, small and far away from cities, as far as I am concerned, it is a great place to live. There is a real community atmosphere(氛围)here, and many people know, or are related to, many other people. There is always something to do or see in Fort William and there is no excuse for being bored! But there is one thing that is certain for everyone, that is, Highland hospitality. It is still very real, very alive! People look forward to seeing you!

    The first organized system for sending messages began in Egypt around 1500 B.C. This system developed because the pharaohs frequently needed to send messages up and down the Nile River in order to keep their empire running smoothly. Later, the Persians developed a more efficient system for sending messages using men and horses. Messages carriers rode along the road system stretching from one end of the Persian Empire to the other. Along these roads, fresh men and horses waited at special stations to take and pass along any messages that needed to be sent. The stations where riders passed messages back and forth were built 23 kilometers apart, so the men and horses were able to travel quickly between them. The Romans later took up his idea and improved it by using a more advanced and extensive road system.

    In China, however, Kublai Khan had built up his own system for delivering messages. This system worked in the same basic way as the Roman system. The difference was that Kublai Khan kept 300,000 horses along the roads of this delivery lines. There were over 10,000 stations where a message would be passed from one rider to another with a fresh horse. In this way, Kublai Khan could receive messages from anywhere in the country in only a few days.

    It was not until the 1500s that a well-organized postal system appeared again in Europe. One family, the von Taxis family, gained the right to deliver mail for the Holy Roman Empire and parts of Spain. This family continued to carry mail, both government and private, throughout Europe for almost 300 years.

    In 1653, a Frenchman, Renouard de Velayer, established a system for delivering post in Paris. Postal charges at that time were paid by the recipient, but de Velayer's system was unique by allowing the sender to pre-pay the charges, in a similar way to the modern stamp. Unfortunately, de Velayer's system came to an end when jealous competitors put live mice in his letter boxes, ruining his business. Eventually, government-controlled postal systems took over from private postal businesses, and by the 1700s government ownership of most postal systems in Europe was an accepted fact of life.

    The thing that all these early systems had in common was that they were quite expensive for public use, and were intended for use by the government and the wealthy. However, in 1840, a British schoolteacher named Roland Hill suggested introducing postage stamps, and a postal rate based on weight. This resulted in lowering postal rates, encouraging more people to use the system to stay in touch with each other, His idea helped the British postal system begin to earn profits as early as 1850. Soon after that many other countries took up Mr. Hill's idea. And letter writing became accessible to anyone who could write. Today, the Roland Hill awards are given each year to "encourage and reward fresh ideas which help promote philately"(stamp collecting).