Just 28 years ago, Berlin was a city divided into two by the Berlin Wall. How excitedpeople were as the Berlin Wall came down. Since then, Berlin has become one of the coolest cities in Europe. Here are the main reasons why I think Berlin is cool.

    First, Berlin has cheap hotels and everyday objects (物品). You needn't worry aboutspending too much money when visiting Berlin.

    Second, Berlin knows how to give parties, and there is a festival here every month ofthe year. Perhaps the most famous is the Berlin International Film Festival (the BIFF).

Third, Berlin has beautiful buildings of its own. The Brandenburg Gate is one of thecity's most famous buildings. It's the symbol (象征) of more than 200 years of history. The TV Tower is as good as the Eiffel Tower in Paris and the London Eye.

Lastly, Berlin is a city of living art. Artists can create works of art on the sides ofbuildings.

If you want to visit a European city with culture, cheap objects and lots of colours,Berlin is the place to be. What are you waiting for? Get to Europe's coolest city before anyone else discovers it

    Chinese young people love their smart phones．They play with phone apps every day．But now, a book has let them forget about their phones．The book is called Secret Garden．

    It is a colouring book for adults'．You don't have to read it, because it has almost no words．All the pages are pictures but no colours．You just need to use colour pens to paint it．An artist in Britain made the book．

    The book is now the biggest selling book on amazon．Cn．last month, it sold 25,000 copies in China．Many young people bought this book．They like it so much that they stop playing games or surfing the Internet on their phones．These people are mainly young mothers and workers．It is very difficult to take care of babies or do a good job at first, so they feel a lot of pressure．Drawing the book can help them become less nervous．

    In the past, people thought colouring books are only for children．With Secret Garden getting more and more popular, many young adults also begin to paint as a hobby．

In ancient China, when friends or relatives were separating, they would pick a willow twig（柳条） and give it to the person who was leaving and wished for him {#blank#}1{#/blank#}. In Chinese, the word for "willow" has the {#blank#}2{#/blank#} pronunciation as the word for "stay". 

Many Chinese poets liked writing about willows in their works. One of the most famous {#blank#}3{#/blank#} is A Farewell Song（《送元二使安西》）by Wang Wei. It reads, 

No dust is raised on the road met with morning rain,

The willows by the hotel{#blank#}4{#/blank#} so fresh and green.

I invite you to drink a cup of wine again,

West of the Sunny Pass no more friends will be seen.

Nowadays, willow twigs can also be seen in modern art. There was an amazing {#blank#}5{#/blank#} about willow twigs. 365 people were {#blank#}6{#/blank#} willow twigs in their hands on the green stage. At the same time, an ancient painting of weeping willows appeared on the LED screen. The setting of 365 people stood for 365 days, and the colour green meant the {#blank#}7{#/blank#} of spring. The performance was{#blank#}8{#/blank#} praised by the audience. " I was totally attracted by {#blank#}9{#/blank#} Chinese culture, " one of them said. 

In short, giving a willow twig to a person is not saying goodbye {#blank#}10{#/blank#} asking him to stay. {#blank#}11{#/blank#} is the beauty of Chinese culture. 

注意：（1）可在思维导图内容提示的基础上适当拓展信息。（2）不能照抄原文：不得在作文中出现真实校名、地名和考生的真实姓名。（3）语句连贯，词数 80 左右。作文的标题和开头已经给出，不计入总词数

Shunde，the place I live in.

Dear readers，let me tell you something about Shunde，the place I live in.

……

If you've ever used pi in math class, you probably used the number 3.14. In fact, the number for pi is much longer. Pi is called an irrational number (无理数) because the digits (数位) after the decimal point (小数点) never end or repeat.

In 2015, a young man from India named Rajveer Meena set a world record by memorizing 70,000 digits of pi. But pi is much longer than that.

On Pi Day ( March 14th) this year, a company called Solidigm said it calculated (计算) pi to105 trillion (万亿) digits. And the 105 trillionth digit is 6. It broke the record for how many digits of pi we know.

Pi is really useful for circles in math. It helps us connect the circumference with the diameter of a circle.

Even NASA scientists use pi for their work of studying space. But they only need about 15 digits of pi for their calculations.

Calculating pi also has another important use. It's how scientists test new computer programs and data storage systems (数据存储系统).

Solidigm's calculation of pi took around 75 days to finish. The company's owner Brian Beeler said that the achievement needed a lot of work. They had to plan the calculation very carefully.

This isn't the first time that Solidigm has calculated pi. In 2022, Google Cloud calculated 100 trillion digits of pi. Solidigm matched that in 2023.

In the future, we'll keep finding more and more digits of pi. We'll never be able to calculate all the digits of pi because it goes on forever. But it still helps us see how great computers can be.