The world's largest radio telescope was finished on Sept. 25, 2017 in China.

    FAST is a five-hundred-meter telescope. It is also called Tian-yan ("The Eye of Heaven"), with a dish the sire of 30 football grounds, deep in the mountains of southwest China's Guizhou Province. The giant dish is built on a howl-like valley.

    The surrounding area has "radio silence" as there are no towns and cities within a 5-kilometer radius (半径范围) and only one county center within 25 kilometers.

    FAST is made up of 4, 450 panels (面板). The second largest radio telescope is in Russia. The bigger dish will be able to pick up weaker signals (信号).

    The radio telescope is like an ear, listening to tell meaningful radio messages from white noise in the universe. With the help of the telescope, we can receive weaker and more radio messages far away in space. It will help us to search for intelligent life outside of the Galaxy (银河系) and explore the origins (起源) of the universe. "Any of its discoveries will lead to a Nobel Prize," said Joseph Taylor, a Noble Prize winner.

    The FAST project began in 2011. And the telescope is expected to remain the global leader for the next 10 to 20 years.

    Do you think the people who use smart phones all the time are relaxed? A research shows that too much smart phone use in spare time can make people more stressed out.

    So what can we do in order to really take advantage of our spare time? We have collected the following activities that also take a few hours to complete, but you'll improve your health in the process (过程).

    Whether you're at home or on holiday, it's important to disconnect from the Wi-Fi. Walking in nature can do good to your health. As a professional(职业的)traveler, Samantha Brown put it in a recent passage, "I put my map in my back pocket, put down my phones and take a good, long walk. Just walk around."

    Go to bed earlier. What can help improve your mood? Extra sleep, naturally. Getting the right amount of sleep is very important to our health and studies show that we don't get enough of it.

    Read a book. And let yourself get lost in a good story. Research shows that reading can reduce(减轻) stress, keep your brain sharp and can even help you sleep better. Everyone should spend at least 30 minutes reading every day.

    Putting pen to paper is a good exercise. Try writing down your thoughts. Writing has a lot of health advantages. Besides, writing down your thoughts may even help clear your mind.

It's well-known that silk was discovered in China. It's wonderfully strong, light and soft. As one of the best materials for clothes, silk has a perfect look and feel that no other materials can match. 

There is a story about how silk was discovered. Lei Zu, the wife of Huang Di, was having tea under a mulberry tree when a silkworm cocoon(蚕茧)fell into her cup. As she tried to take the cocoon out, it started to unwind(展开)and the "line" seemed endless. She realized that the strong line could be used to make clothes. Then Lei Zu taught her people how to raise silkworms and how to get silk In this way, the silk industry was born. 

For hundreds of years after that, silk was only used by rich people. It was a symbol of identity and status(身份和地位). With the development of the silk industry, more silk was produced. It was no longer just for rich people. In the Han Dynasty, silk was transported as far away as Spain, Rome and many other counties. The trade road was famously known as the Silk Road, which connected China with the rest of the world

Today, silk can be used for many kinds of things, not just for clothes, bus also for paintings, writing brushes, kites and even fishing nets. Wherever silk goes around the world, it is always warmly received. 

Food is important. Everyone needs to {#blank#}1{#/blank#} well if he or she wants to have a strong body. Our minds also need a kind of food. This kind of food is {#blank#}2{#/blank#}. We begin to get knowledge even when we are young. Small children are {#blank#}3{#/blank#}in everything around them. They learn something while they are{#blank#}4{#/blank#} and listening. When they are getting older they begin to {#blank#}5{#/blank#} storybooks, science books..., anything they like. When they find something new, they have to ask questions and{#blank#}6{#/blank#} to find out the answers.

What is the best {#blank#}7{#/blank#} to get knowledge? If we learn {#blank#}8{#/blank#}ourselves, we will get the most knowledge. If we are{#blank#}9{#/blank#} getting answers from others and don't ask why, we will never learn more and understand {#blank#}10{#/blank#}.

What's fun on a farm?

There is a great world waiting for you if you go to a farm. {#blank#}1{#/blank#} a farm, you can wake up to the songs of birds, baby chickens, cows and so on. If you go to the animals with food, the ducks, pigs and even sheep come up happily for {#blank#}2{#/blank#}（they） breakfast. It is like being a mini farmer for the day!

But the fun doesn't stop here. Do you want to milk {#blank#}3{#/blank#} cow? That {#blank#}4{#/blank#}(be) my favorite job there. And I do love the cows and the white milk from {#blank#}5{#/blank#}.

And speaking of delicious food, nothing is better than red {#blank#}6{#/blank#}(tomato) and apples you pick up yourself. Also, you can try to cook Beijing roast {#blank#}7{#/blank#}if you can catch（抓住） one on the farm. 

Do you want {#blank#}8{#/blank#}(plant) some vegetables with your friends? Go to a farm and grow your potatoes and {#blank#}9{#/blank#}(carrot) plants there! Of course, you can't miss a beautiful picture in the sky when the sun is going up{#blank#}10{#/blank#} down. 

In a word, if you want to have fun, just go to a farm!

The oil paper umbrella is a traditional Chinese handicraft(手工艺品). It has a history of over1, 000 years in China. In early Tang Dynasty, it was introduced to Japan and Korea, so it was called the "Tang Umbrella". Later oil paper umbrellas were spread to other Asian countries, such as Vietnam, Thailand and Laos. 

Yuhang in Hangzhou is famous for making oil paper umbrellas for more than 230 years. They are mainly made of skin paper, bamboo, and a coating of tung oil(桐油). It takes more than 70 steps to make them, including making bamboo ribs, pasting paper and painting patterns. It takes at least a week to make an umbrella. In 2008, these umbrellas were added to Intangible Cultural Heritage List(非物质文化遗产名录)of China

A young man called Liu Weixue learned the traditional art of making Yuhang oil paper umbrellas from his grandfather. He improved the umbrellas to win the heart of young people. As the traditional paper was easy to break, he started to use a different kind of paper. In a test, his umbrellas were opened and closed for 1, 000 times without breaking. He also used a different kind of bamboo to make the umbrellas weigh less. 

Now Liu hopes the art can be passed on, so he goes to local schools to teach students. He also takes part in lots of activities in different places to make the art be known to more people.