We often find that weekends and holidays feel so short while classes and work feel so long. Actually, though, we know that this is not true. But we still wonder where that strange feeling comes from.

    In fact, this is one of the ways that we're tricked by time, according to the website. All that S interesting. The website lists several wrong impressions (印象) we often have about time. Let's have a look.

    First of all, emotions affect (影响) our time-keeping abilities. Negative emotions (消极情绪). especially anxiety and boredom, make time seem longer because they make us concentrate (集中) more on the passage of time. However, when we are enjoying ourselves, we pay more attention to what we are doing and are likely to lose track of (失去对……的意识) time.

    Here is another example. In 2007, a group of scientists carried out a test. In the test, people fell 50 meters into a safety net and were then asked about their experience. Although the experience took shorter than 3 seconds, the people thought it was much longer than it actually was.

    This is because of the way our bodies reply to danger, according to the scientists. Our bodies produce a chemical called adrenaline (肾上腺素) when we are faced with danger. It allows us to concentrate better so that we can stay alive. As a result, we are able to remember far more details (细节) over a short period of time, which makes it seem like time is going more slowly.

    Another situation when we make mistakes about time is when we take afternoon naps (午觉). Have you ever had trouble telling what time it is after a long nap? That's because the best amount of time for a nap is 20 minutes. After 20 minutes, you enter a new stage of sleep called slow-wave sleep. If you wake up mid-way in this stage, it will take a while before you can correctly perceive (感知) time again.

    Yes, time can be mysterious (神秘的) and there is no way to control it. So, perhaps the best thing to do is to make good use of every minute.

  The Chong Yang Festival is {#blank#}1{#/blank#} on the ninth day of the ninth month of the lunar calendar. According to the {#blank#}2{#/blank#} theory(理论) of "Yin" and "Yang"， both the 9th month and the 9th day of the month belong to "Yang"， and "Chong" means {#blank#}3{#/blank#}， so it is called "Chong Yang". Now, it is a day for the elderly(老年人). {#blank#}4{#/blank#} that day, children often go back to their homes and buy warm clothes, delicious food or other things for their {#blank#}5{#/blank#}. You know, it is also an old custom {#blank#}6{#/blank#} climb the mountain. On the {#blank#}7{#/blank#} of  the mountain, we can enjoy beautiful natural scenes and breathe fresh air. Besides, people can also {#blank#}8{#/blank#} the golden chrysanthemum flowers(金菊花), {#blank#}9{#/blank#} chrysanthemum wine(酒), and eat double-ninth cakes. {#blank#}10{#/blank#} a great festival it is!

These days, more and more people like the "city walk" around China. The city walk is a kind of city tour coming from the UK. It means tourists follow a planned route（路线）working deeply on the city's history and culture. During the traditional kind of travel, people need to follow a group of people. But city walk routes are special for every tourist. People probably choose a route on their own and move on foot without a purpose. They can also talk with locals（当地人）and taste local food on their way. 

City walkers may be tourists from other places or local young people. For tourists, by taking part in a city walk, they can learn the city's history and culture. For the local young people, they may spend weekends knowing more about their living places. And they even share their routes and places online. So more people get interested in their cities and come to visit them. 

Now the city walk is very hot. However, we also find that to make money, some travel agencies（旅行社）may make some routes without understanding the culture and history of a city. That will make tourists lose interest in the city walk. What's more, many young people spend much time taking photos to just show themselves online. 

The Chinese cheongsam, also known as qipao, is a traditional dress that first appeared in the early 20th century in Shanghai. It has become a symbol of Chinese culture and is worn by women around the world.

The cheongsam hugs the curves(曲线) of the body and is mostly made of silk or cotton. It's typical with a high collar(领), short sleeves(袖) and a short cut on the side of the skirt to make movement easy.

The cheongsam was first worn by wealthy women in Shanghai as a way to show their social positions and wealth. But it quickly became popular among all classes of women as daily clothes. During the 1920s and 1930s, the cheongsam experienced changes and became fitter and better designed with fashionable elements(元素). Nowadays, designers are creating new styles to follow modern fashion.

Today, the cheongsam is often worn for formal situations such as ceremonies, celebrations and cultural events in China. One of the most popular looks of the cheongsam is Anna Wong, a Chinese famous movie star. She often wears cheongsams on and off screen. Her look helps to make the dress win popularity in Hollywood and around the world.

The cheongsam is not just a symbol of fashion, but also of Chinese culture and history. It brings out that Chinese people can always keep up with  changing fashion over years.

The cheongsam has stood the test of time. It will continue to catch eyes of the public and give ideas to people for years to come.

Nowadays, more and more new sports are becoming popular among young people. Why do young people prefer new sports? Because these new sports bring more fun to them and it's also a great way to stay healthy.

One popular new sport is skateboarding. It is a fun way to exercise and it is also a great way to improve yourself. You can use skateboards (滑板) to try difficult or new jumps. This sport needs practice and skills, but it is easy to learn and you will get a lot of fun from it.

City outdoor cycling is becoming more and more popular, because it is a great way to see the city and get exercise at the same time. You can bring your own bike or rent one when you are ready to see the city on two wheels.

Playing frisbee (飞盘) is a great way to play a sport with a group of friends. It is relaxing and it is good for your arms. There are many different frisbee games you can play. You can even meet some new friends while you're having fun!

Drones are a kind of machine that can fly. People use a computer to control this flying machine. Drones can do many things even without people touching them. They can carry things, go somewhere on their own and take pictures. Experts say that drones will change human life in amazing ways. Some people say this special machine will change human life as much as the car or even the computer does.

Many people around the world are using drones today. These drones can help humans solve some difficult problems. For example, filmmakers use drones to make difficult parts of films. Drones can also help to find people. If people are lost, far from home, police can use drones to find them.

In Brazil, farmers also use drones to watch their crops. Brazil has many large farms. On these farms, people find it difficult to look after all the crops. Drones can help farmers to look for crop diseases. They also help farmers use fewer farm chemicals. This can help the environment and save much money. Реорlе think thаt drоnеs will bе vеrу useful in farming in thе future.