The Long March 5 Y3 is China's strongest rocket.

    China's biggest and most powerful carrier (运载) rocket roared (轰鸣) into space on Dec 27, 2019. The Long March 5 kicked off its mission (任务) at the Wenchang Space Launch Center in Hainan.

    The 57-meter-tall rocket, known as the Long March 5 Y3, is the tallest, strongest and most technologically sophisticated (技术复杂的) rocket in China. Since it is much bigger than China's other Long March rockets, people call it "Fat 5". The rocket is able to carry spacecraft (航天器) weighing up to 25 tons – roughly the weight of 16 midsize cars – into low-Earth orbit (近地轨道), China Daily reported. This payload capacity (有效载荷) is about 2.5 times greater than that of any other Chinese rocket.

    During the December launch, the Long March 5 successfully sent the Shijian 20 experimental satellite into orbit. At more than 8 tons, it is the heaviest and most advanced communications (通信) satellite built by China.

    The launch also tested key technologies that will be used to take the Chang'e 5 probe (探测器) to the moon, according to the China National Space Administration.

    The success of the Long March 5 launch washard-earned. The rocket's first launch was carried out in November 2016 at the Wenchang center. A second mission took place in July 2017 at the same site, but failed to send a satellite into orbit. According to project leaders, in the two years since that failure, the rocket's research team held more than 600 seminars (研讨会) and carried out at least 1,000 experiments and tests to improve the rocket.

    "Compared with the Long March 5 Y2 that was used in the failed second mission, the new one has about 200 technical improvements, including changes to the engine design," Li Dong, the rocket's chief designer (总设计师), said to China Daily.

    The future missions of the Long March 5 will include a trip to Mars, taking back moon samples (样本), and placing parts of a manned (载人的) space station into orbit. 

Every school day, we use schoolbags to carry all of our things to school. They are a big part of our lives. But have you ever thought about the history of the schoolbag?'. 

In the Han Dynasty（汉朝）, students in old - style private schools used bamboo boxes to carry books to school. People consider the bamboo boxes to be the earliest schoolbags. There were usually two or three layers（层）in the box. Kids put different things like books, brushes, ink stones（砚）and paper in the boxes. 

Hundreds of years later, people developed a new kind of schoolbag called the budai, or the " hip - pocket ". The budai was lighter than the bamboo box. With the founding (成立) of the People's Republic of China, military rucksacks（军用背包 )became popular. Many people carried them when they were in school. Ask your grandparents or parents about these bags. Maybe they can tell you about their experiences of carrying them when they were in school. 

A new style of schoolbags has appeared in recent years. Many of them have colorful and fashionable designs（时尚的设计） on them, such as pictures of cartoons or pop stars. And they are more comfortable to use. Some students pull wheeled bags filled with heavy textbooks and others carry backpacks. 

Schoolbags are still changing. Can you imagine what future schoolbags will be like?

Cultural exchange is our goal. Come and help us make this a reality.

The American-Chinese Culture Exchange Center (ACCEC) are now looking for some volunteers from middle school for our summer camp from August 20th～30th in 2022.

During the summer camp, 300 students aged from 7 to 10 will fly from America to China to learn about Chinese culture. They will visit some places of interest and learn Chinese as well. We will try our best to provide the best camping experience, so we are looking for "the best of the best" volunteers.

◆ Needed skills: Good at Chinese and English. Patient enough to get on well with children. Active in learning. Always ready to help. Good at communicating with others and work well as a team.

◆ Training: Before the camp, all volunteers need to receive a 10-day training. Learning how to work with the children and how to teach Chinese to them.

◆ Age: 14～17 years old.

If you are interested, please send an e-mail to us at accecsummercamp@163.com by July 20th, 2022 or call Miss Chen at 13022657911.

Do you know citywalk? Many young people like it very much in China now. They think it's 1 .

When young people arrive 2 a new city (城市)—Beijing, Shanghai and Chengdu, they like to 3 with good friends around the city. For them, citywalk is "walking around the new 4 " on foot.

Citywalk helps young people to 5 a city. People usually follow a city route (路). When they walk, they can learn the local culture (当地文化) and have 6 food. It also helps them make 7 new friends.

Citywalk follows one 8 : don't go to the center places. 9 these places are busy and 10 . People can not feel free there.

Recently, a very simple sentence, "Amazing, my motherland" has become widely known in China. As we know, China has {#blank#}1{#/blank#} a lot these years and it has become one of the most important countries in the world. Foreigners pay {#blank#}2{#/blank#} attention to this ancient eastern country — China than before. 

Lily, an Australian girl, has lived in China {#blank#}3{#/blank#} three years ago. She is studying in a university in Nanjing now. Great changes make her amazed. "I think finding jobs is {#blank#}4{#/blank#} in China than that in Australia. I will work here after I finish my studies in Nanjing, " Lily said. 

In Nanjing, we can find new {#blank#}5{#/blank#} everywhere. There are more great changes than before. China is developing trade and friendship with other countries. China is playing an important role in the world. 

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Dear Students' Union,

I'm glad to share my ideas about school clubs.

 Li Hua