Did you spend much time lying on the comfortable sofa at home during the summer vacation? How often did you do sports this summer? People across the world need to get moving, according to a new study by the World Health Organization (世界卫生组织).

    5% of adults do not get enough exercise, according to the study. This number hasn't changed from 2001. Because of this, about 1.4 billion people are close to deadly diseases (疾病) such as heart disease and cancer (癌症).

    People should do at least 2 and a half hours of "moderate intensity (中等强度)" exercise each week, such as dancing or swimming. They can also do 75 minutes of "vigorous intensity (高强度)" exercise, such as running or playing soccer, according to the WHO.

    As for how to exercise more, experts says that we don't have to go to the gym (健身房) every time For example, we can go up and down stairs (楼梯) a lot instead of taking the lift. If we can't go to a dancing class each week, standing on one leg for 30 seconds a day is very good too.

    The study also found that women are less active than men, 32% of women hardly ever take exercise, compared to (比较) 23% of men. Women spend more time at home taking care of children and doing housework.

    But unlike that in most other countries, men are less active than women in China, with 16.6% of men and 12% of women not getting enough exercise.

    Today more and more children wear glasses before going to middle school. They keep their eyes watching TV or playing computer games for a long time. Eyes are the windows of our hearts (心). We use our eyes to see everything around us, so we should know how to protect our eyes.

    Love our eyes. When we open (睁开) our eyes every day, we can see the lovely friends and parents, beautiful flowers and green trees. If our eyes don't work, how can we see the world. In our eyes, everything and everywhere is dark. It's like a house with no light (光). How important our eyes are!

    Relax our eyes. First, stop to relax 30 minutes when using the computer for an hour or two. Next, remember to do eye exercises every day. Then, looking at green trees also helps a lot. In these ways, our eyes will feel relaxed.

    Have good habits. When writing homework and reading, it is important to keep a distance (距离) of 30 cm between your eyes and books. Remember to use our eyes in a right way. Don't read in bed or on a moving bus. Eat something healthy for eyes, such as carrots, fish and eggs.

    Follow my advice (建议) and get good habits. It's time to say goodbye to thick (厚的) glasses.

    Vienna is a beautiful old city on the River Danube in the center of Europe. It's the capital city of Austria and the center of European classical music. In the 18th century a lot of musicians came to study and work in Vienna.

    In the Strauss family, there were two composers called Johann Strauss: the father and the son. The father, Johann Strauss the elder, wrote and played music for traditional dances, called the waltz. His dance music made him famous all over Europe. The son, Johann Strauss the younger, was also very successful and popular. He wrote over 150 waltzes. In 1867 he wrote The Blue Danube waltz.

    Mozart was another very important composer. He was born in Austria in 1756. Before he was six, he played not only the piano but also the violin. His family took him around Europe and he gave concerts in many cities. He wrote hundreds of wonderful pieces of music. But he became very poor and died in 1791 when he was only 35. Like Johann Strauss, father and son, he was a great European musician, and many people still think his music is perfect.

How can we stop climate change? How can we stop air pollution? How can we live on a green planet? One way is to use clean energy. Clean energy does not harm the Earth. It never runs out. Energy from the Sun is clean. We just need to learn how to get and store more of it.

Plants use energy from the Sun. They use it to turn water and air into sugar. The sugar can be used as food. Scientists know a lot about how plants make food. Some scientists want to get energy from the Sun like plants do. They want to make a machine that can use sunlight to make fuel (燃料) from water.

Water is made up of two different parts. Breaking water into its parts is hard. Plants do it all the time, though. It is part of how they make food. With energy from the Sun, the new machine will break water into its parts. One of the parts will be used as fuel. Then the fuel is used to make electricity (电). The electricity can power cars, houses, and so on.

This fuel is better for the Earth than gasoline (汽油). It does not pollute the air. Plants can help us learn how to make clean energy!

In 2013, Chinese President Xi Jinping offered to build a Silk Road Economic Belt (经济带) and a 21st Century Maritime (海上) Silk Road, which became known as the Belt and Road Initiative (BRI, "一带一路"倡议). The BRI has brought cultures together for over ten years. As the BRI continues to bring the world together, young people from the Belt and Road countries can see how it continues to develop and have a deeper understanding of it. We did a survey of 125 Chinese students. The following survey is about BRI in the eyes of the students. The diagrams (图表) below show the results.

Diagram Ⅰ DiagramⅡ

Diagram Ⅲ Diagram Ⅳ

Do you know the Monkey Buffet Festival in Thailand? It is on the last Sunday of November. It is a great day for monkeys in Thailand. The festival has a history of about 35 years. People there think monkeys can bring good luck to them. So, to thank monkeys, they have this special festival. 

On that day every year, people put lots of fruit, vegetables, cakes and even drinks on tables outside. They are all for monkeys. Many people come to see monkeys on that day. 

During the festival, there are a lot of interesting activities about monkeys. Young people always dress like monkeys, and they sing, dance and play some music on the streets. 

Monkeys always live in groups. Most of them live in the trees. They are good at running and jumping. They eat fruit, vegetables, plants and birds' eggs. Monkeys are clever. Do you think so?