China has once again showed its ability to change the world with its“ four great new     1     (invent)” —high­speed rail, electronic payment, shared bicycle, and online shopping.

China's new­generation high­speed train, the Fuxing Hao, is now one of the     2     (fast) trains in the world，which can travel at a speed of 350 km/h. Besides high­speed rail, China     3     (improve) people's lives in many other innovative ways over the last decade.

Bike sharing, for example, is not new itself. But China has made     4     much more convenient and popular both in China     5     overseas. The leading Chinese bike­sharing companies Mobike and Ofo are now operating in foreign countries such as Singapore and Britain.

And back in China, when riding a shared bike, you can stop     6    (buy)and eat whatever you want     7     (simple) with a tap on your phone. You could easily pay with your smartphone by     8     (scan) the seller's QR code. Cashless payment has grown into a     9    (choose) for Chinese people—even a pancake seller is using Alipay.

Besides, the four innovative ways of life are most popular among youths from 20 countries participating     10     the Belt and Road Initiative, and they wish their countries would emulate (模仿) China in terms of technological achievements.

If you think young people can’t make a difference to the world, think again. Over the years, teens have invented     1     (amaze) things that solve problems and have changed the ways people do things. And they’re going to continue to invent things in the future.

Take fourteen-year-old Eliott Sarrey     2     example. His invention, Bot2karot, is a gardening robot that can     3     (easy) take care of a small vegetable garden. The robot     4     (control) by an app on a smartphone. It     5     (help) people grow and take care of vegetables. It also saves water and energy, and makes gardening easy for people     6     are very busy or have difficulty getting around.

Brooke Martin is     7     animal lover who missed her dog when she was away. She also knew that     8     (she) dog suffered from pressure when she left. So Brooke invented iCPooch when she was just twelve years old. The iCPooch lets pet     9     (owner) check on their pets from anywhere in the world using a smartphone.

Kids all over the world find ways     10     ( solve) different problems every day. Who knows? Maybe the next time you have a problem, you’ll come up with the next amazing idea!

China is widely known for its ancient civilisation, and one of the     1     (factor) is the Chinese writing system. The earliest written Chinese was     2     picture-based language. There were animal bones and shells on which symbols     3     (carve). Later the symbols became a well-developed writing system. Over time, it developed into different forms, because the Chinese people were divided geographically at that time,     4     (lead) to many varieties of dialects and characters. It was after Emperor Qinshihuang united the seven major states     5     the Chinese writing system began to develop in one direction.

Written Chinese has become an important means     6     which China’s present is connected with its past. People in modern times can read the classic works     7     were written by Chinese in ancient times. Today, the Chinese writing system is still an important part of Chinese culture. As China plays a great role in     8     (globe) affairs, an     9     ( increase) number of international students are beginning     10     (appreciate) China’s culture and history.

The word Nushu literally means “women’s writing” in Chinese: As the name suggests, Nushu is created and specially used by women.

Often     1    (call) “the world’s only surviving characters for women”, these slim words were developed from standard written Chinese. In the old days, Nushu     2    ( teach) by elderly women to girls at home because female children weren’t allowed     3    (attend) formal school. During gatherings in villages, women used the characters to write poems or song lyrics to express their emotions     4     were hidden from men. The words were full    5     encouragement and positive energy, and showed an uncommon open-mindedness among women at that time.

Ji Xianlin once said that Nushu is a feminist (女权主义者) symbol. “It’s    6     unique writing system created by    7    (talent) women who were deprived (剥夺) of the right to education,” he wrote in an article. “It has significance in various     8    (field) and represents Chinese people’s strong spirit.”

Nushu was made as a national cultural heritage in 2006. However, it is not     9    (wide) used in daily life today. In fact, it is a dying language. Now linguists are taking action to prevent this incredible cultural heritage from    10    (disappear).