Once upon a time, a cat and a mouse were good friends. They lived a happy life in the same house. One day they went to the market and bought a big piece of cheese. They put it under a tree for winter.

    A few days later, the mouse wanted to eat the cheese. He told the cat that he had to join a baby's birthday party and then left. The mouse ate half of the cheese and returned home. When the cat asked him what the baby's name was, the mouse said" Half­gone".

    After a few days, the mouse wanted to eat some cheese again. He told the cat he had to join another baby's birthday party. He finished the other half and told the cat the baby was called "All­gone".

    When winter came, the cat went to the tree to get the cheese. But he found nothing. From then on, mice and cats were not friends any more.

Information Card

    Many people want to be happy, but few know how to find happiness. Money and success alone do not bring lasting happiness. Aristotle, a Greek thinker, said, "Happiness depends upon ourselves." In other words, we make our own happiness. Here are a few suggestions to help you be happier.

    The first secret of happiness is to enjoy the simple things in life. Too often, we spend too much time thinking about the future—for example, getting into college or getting a good job—that we fail to enjoy the present. You should enjoy life's simple pleasures, such as reading a good book, listening to your favorite music, or spending time with close friends. People who have several close friends often live happier and healthier lives. Another secret to living a happy life is to be active, and have hobbies where you forget your problems and time. When playing a sport, such as swimming, many people forget about their problems, and only think about the activity. Finally, many people find happiness in helping others. If you want to feel happier, do something useful for someone. You can help a friend with his or her studies, or go shopping to buy food for the old.

Information Card

    Did you know that tea, the most popular drink in the world（after water）was invented by accident？Many people believe that tea was first drunk about 5, 000 years ago. It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink.  One day Shen Nong was boiling drinking water over an open fire. Some leaves from a tea plant fell into the water and remained there for some time. It produced a nice smell so he tasted the brown water. It was quite delicious, and so, one of the world's favorite drinks was invented.

    A few thousand years later, Lu Yu, "the saint of tea", mentioned Shen Nong in his book Cha Jing. The book describes how tea plants were grown and used to make tea. It also discusses where the finest tea leaves were produced and what kinds of water were used.

    It is believed that tea was brought to Korea and Japan during the 6th and 7th centuries. In England, tea didn't appear until around 1660, but in less than 100 years, it had become the national drink. The tea trade from China to Western countries took place in the 19th century. This helped to spread the popularity of tea and the tea plant to more places around the world. Even though many people now know about tea culture, the Chinese are without doubt the ones who best understand the nature of tea.

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    Waste sorting(垃圾分类) is a big matter worldwide. In order to sort the rubbish properly and protect the environment, people in different countries are using different methods to sort their waste.

    UK A UK company invented a "smart bin" to help with waste sorting. People just need to drop their waste into the bin(垃圾箱). A camera and sensors(感应器) in the bin can tell what type of rubbish it is and correctly sort it. The bin also compresses(压缩) the waste so it takes up less space.

South Korea South Korea is using a method called "Pay For Your Waste" to encourage its people to reduce food waste. When throwing away rubbish, people have to separate their food waste from their other rubbish and put it in a bin. The smart bin then weighs the food. People have to pay for their food waste by scanning(扫描) a barcode(条形码) on the bin. If they throw away more rubbish, they will pay more.

    Japan Japan is leading the world in waste sorting. They sort waste so carefully that even plastic bottles and their caps go into different bins. Different types of paper products have their own bins.

    China China is improving its waste sorting efforts. Shanghai has worked with Alipay to create a "green account(账户)"service for its residents(居民). The city is asking all of its residents to sort their waste into four groups: wet, recyclable, harmful and dry.

    Nick is a student from California. He weighs 147 pounds (about 67kg). But do you know what he used to be like? Six months ago, he weighed about 202 pounds (91kg). How did he lose all that weight in only half a year?

    "One day, I was surprised to find that I weighed about 202 pounds," Nick said. "I thought I had to do something."

    Nick is from a boxing(拳击) family. His father and two elder brothers are all professional boxers. So he decided to start boxing. He began with simple exercises. Then he started running. "I don't like running," he said. "But I really wanted to be thin and strong at that time, so I had no choice but to keep on."

    Months later, Nick joined a boxing club in his city. He is always the first kid to begin exercising, and the last to leave the club. His coach(教练), James White said, "Nick is more hard-working than any other boy in the club. I'm very happy to see him lose the pounds so quickly."

    Nick is very happy with his weight now. There is a family photo in his room from 18 months ago. "Each time I look at the photo, I laugh at myself. I was so big then." Nick said. "I look thinner and stronger now."