For centuries, the body's blood has been connected closely with the feelings. People who show no human emotions or feelings are said to be cold-blooded.

Cold can affect other parts of the body. But the expression ―get cold feet has nothing to do with cold or your feet. The expression means being afraid to do something you have decided to do. For example, you agree to be CEO of a company. But then you learn that all the other officers have resigned (辞职), and all the work of the company will be your responsibility (责任). You are likely to get cold feet about being CEO when you understand the situation.

    The expression “give someone the cold shoulder” probably comes from the physical act of turning your back toward someone, instead of speaking to him face to face. You may give the cold shoulder to a friend who has not kept a promise (遵守诺言) he made to you, or to someone who has lied about you to others.

    “A cold fish” is not a fish. It is a person. But it is a person who is unfriendly, unemotional and shows no love or warmth. A cold fish does not offer much of himself to anyone. Someone who is a cold fish could be cold-hearted. He or she will never feel sorry for those in bad situation.

    “Out in the cold” means not getting something that everybody else got. A person might say that everybody but him got a pay raise—he was left out in the cold. And it is not a pleasant place to be.

    Beijing Opera is the most representative of all Chinese traditional dramatic art forms and the largest Chinese opera form. Having a history of about 200 years, it is developed from absorbing(吸收)many other dramatic forms, mostly from the local drama 'Huiban', which was popular in South China during the 18th century. It is a scenic（戏剧的）art integrating music, performance, literature, aria, and face painting.

    Theatrical art forms in many other countries do not present singing, dancing and spoken parts in one single drama. An opera singer, for example, neither dances nor speaks on stage; there are no singing or dancing parts in a modern play; in a dance drama, the dancer has no speaking role and does not sing either. Traditional Chinese drama, including Beijing Opera, is a kind of entertainment which includes spoken parts, singing, dancing and acrobatics.

    In addition to its presence in China, Beijing Opera has spread to many other places. Mer Lanfang, one of the most famous performers(表演者)of all time, was the first to introduce Beijing Opera to foreigners and made highly successful tours to foreign countries.

    “You will be puzzled(困惑)all the way through and a little bored from time to time; but you will be charmed and interested. You will be strongly attracted to Beijing Opera even if you know nothing of the dramatic background. "This is how one American traveller described his firs experience in watching Beijing Opera.

    Beijing Opera is China's national opera and it is full of Chinese cultural traditions. Welcome to China and enjoy Beijing Opera!

    Paper was first created about 2,000 years ago in China. After the invention, people started to write on paper to make books. In those days, books were only produced one at a time by hand. As a result, there were not many books, and they were expensive. So, few people had the chance to learn to read.

    Printing was invented in China during the Sui and Tang Dynasties(隋唐时期). Later, developments in printing made it possible to produce books more quickly and cheaply. A trade in books developed, and more people learnt to read. Knowledge and ideas spread (传播) faster than ever before. In a way, we can compare the invention of paper and printing to the introduction of the Internet in the twentieth century.

    In the past 2018, there were some amazing achievements in China which not only conquered (征服) the world but also sounded very interesting. Let's have a look at some of them!

    Few words are spoken more often every day on the streets of Britain than "I'm sorry". This phrase has become such a common response(反应) that it has taken on a lot of meanings.

    Saying "Sorry" means to apologize(道歉). This is simple and easy to understand. We learn it both as a native speaker and as a student of foreign languages.

    But in Britain, it takes on another meaning. It is a cultural expression. Imagine this: a man walks down the street, looking down at his phone. A woman is walking in the opposite direction, towards the man. She sees him, but she can't get out of the way in time. The man bumps (碰撞) into the woman. Who should say sorry? Naturally, the man should say sorry, because it was he who wasn't looking where he was going. Yet in Britain, it is common for both to apologize.

    It is known that British people, like most people, do not enjoy conflict(冲突).So to quickly calm the situation, British people will apologize to each other.

    Other times it may sound funny to hear "sorry". Some of my friends say it at restaurants, as they ask the waiter: "Sorry, but can I order another drink?" It is not to apologize, but just to express that we need the waiter. In Britain, sorry doesn't always mean exactly what you think.

    Welcome to Isle Royale National Park! It is a US national park in the state of Michigan.

    Isle Royale is surrounded by the deep blue waters of Lake Superior, the largest freshwater lake on Earth by area. No cars are permitted in Isle Roy ale. There are no real roads on the island. The only way to get to the park is by boat or sea plane. A boat trip to Isle Royale takes three to five hours. Isle Royale is the largest of the islands within the national park. It is over 72 kilometers long.

    The whole national park covers a total area of 2, 320 square kilometers, with 540 square kilometers above water. Isle Royale became a national park in 1940. But once they arrive, most visitors stay a white. The average stay for visitors in Isle Royale National Park is 3.5 days. Isle Royale offers hiking, camping, boating and even scuba diving.

    Visitors to Isle Royale can see a lot of mouse and wolves in winter. The national park is closed from November l through April 15, due to extreme weather conditions. But for the other months of the year, Isle Royale offers green forests and clear blue waters.