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China has been famous around the world since ancient times. In the past, we had the Four Great Inventions. Nowadays, more inventions and creations have made China stronger and greater in the world.

On May 5^th, 2017, at Shanghai Pudong International Airport, China's first large homemade jet airliner(喷气式客机), the C919, took off successfully for the first time. It has taken about ten years for the scientists and researchers to make this Chinese dream come true, It's a pride of the whole nation. So far, more than 23 companies have already ordered 570 C919 planes from China. But we still have a long way to go before the C919 carries passengers by 2020. It also faces the challenge of competing with the Airbus A320 and the new Boeing B737.

What's more, China is working on the new high-speed trains with the highest speed of 400 km/h. It will be ready by 2020. The new trains are expected to push area cooperation(合作) and create new business for China and foreign countries. Many countries, especially the ones in Central Asia, Southeast Asia, the Middle East and Eastern Europe, are planning to build high-speed rail lines or to improve their railways with the help of China. They'd like to get support in technology from China.

China has made great progress in both science and technology. And it makes a great contribution(贡献) to human, too. All of these are changing the daily life of Chinese people, even of the people around the world.

    Ne Zha, which officially opened in cinemas in China, has got rave reviews and is rated higher than Monkey King: Hero Is Back. It is also China's first 3D animated (动画的) feature movie with the IMAX format (格式).

    Since July 13, previews of the movie have taken more than 140 million yuan at the box office and the movie has a score of 8. 8 points (out of 10) on China's largest filming rating site (评分网站) , Douban.

    Ne Zha has more than 1, 300 special effects shots, and it took over 20 Chinese special-effects studios, employing more than 1,600 people. It took Yang Yu, 39, the movie's director and screenwriter, two years to complete it, and the movie was in production for three years. It is the most complex animated production ever made in China. In Yang's movie he is fighting against prejudice (偏见) : Ne Zha is hated and feared all the time. But Ne Zha believes his fate is not predetermined (预先确定的) and that he can choose to be a demon or a god.

     "After watching so many domestic animated movies, only Ne Zha and Monkey King: Hero Is Back have made me shang tou (obsessed or fascinated) ," a Weibo user commented under the promotional video. "I couldn't believe a domestic animated movie can be created with such a well-developed story. I'm sure Ne Zha is going viral (走红) this summer!" reads another comment on Douban.

For thousands of years, humans have explored the earth. Nowadays, we are exploring space. Many astronomers (天 文 学 家) are looking for new planets and new places for humans to live in the future. But where do astronomers start looking?

First, astronomers look for a star(恒星),because our own earth moves around a star. More importantly, it is the correct distance(距离) from the Sun for heat and light. So when astronomers have found the star, they look at the planets around it. In recent years, astronomers have found nearly 400 new planets with stars. However, many of these planets are either too near the star or too far away.

Then, if the planet is in a good position(位置), astronomers look for three key things: water, air and rock. Water is important because all life needs water. And plants produce air for humans to breathe and food to eat. Rock is also important, because there is often water under the rock.

After many years of scrutinising, astronomers have found a planet that is similar to the earth. It's Gliese 581g and it's near a star. The astronomers think it has water and rock. Gliese 581g is bigger than the earth. A year on Gliese 581g is only 37 earth days instead of 365. But astronomers do not think these are big differences and some of them think Gliese 581g will be a new earth.

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Nowadays，we students have some free time on weekends，but how can we make our weekends more meaningful? Here are my suggestions. 

……

In a word，let's try to plan free time well and make our weekends more meaningful. 

Today, more and more parents ask their children to play sports every day, because they worry about their children's health. They want to know more ways to help children keep healthy. 

Being healthy means a person eats well and gets enough physical exercise. If you are healthy, your mind works well and feels good. Here are some rules you can follow to keep healthy. 

Eat all kinds of foods. You may have your favorite food, but it is important to eat all kinds of foods. Try to eat least five kinds of fruits and vegetables a day, two fruits and three vegetables. 

Spend less time on screen. Some children spend much time watching TV, playing computer games or using smart phone. These three sitting down activities are really bad for your health. Try to spend no more than two hours a day on screens. 

Be active. You need to find what activities you like as a child. Not everyone loves baseball or soccer. Maybe your favorite is swimming or dancing. You can write down the enjoyable things when your mom says it's time to stop playing computer games!