【推荐1】Dec.27, 2019 was an exciting day for Chinese people. China's biggest and most powerful carrier rocket, the Long March 5, was successfully launched(发射)in Hainan that day.

The 57-meter-tall rocket is the tallest, strongest and the most technologically difficult rocket in China. Because the Long March 5 is much bigger than other rockets in the Long March series(系列), it has been given a funny name "Chubby 5".

The rocket is able to carry spacecraft(宇宙飞船)to low-earth orbit(近地轨道). The spacecraft weighs up to 25 tons-nearly the weight of 16 midsize cars. The payload capacity(有效负载能力)of the Long March 5 is about 1.5 greater than any other Chinese rocket. The Long March 5 is the third most powerful rocket in the world, following the United States' Falcon Heavy and Delta Ⅳ Heavy.

During the December launch, the Long March 5 successfully sent the Shijian 20 experimental satellite(卫星), China's largest and heaviest homemade satellite, into orbit.

Besides sending the satellite into space, the launch also tested several engineering technologies that were used to improve the rocket's design. It also tested key technologies that will be used to take the Chang'e 5 probe(探测器)to the moon.

In the future, the Long March 5 will be used for China's fifth lunar expedition(探月), as well as to place parts of China's manned(载人的)space station into orbit. "In 2020, we will use the Long March 5 to launch the Chang'e 5 probe to the moon and also send a probe to Mars," said Wang Xiaojun, a project manager of the Long March 5.

【推荐3】Earthquake rescue robots have experienced their final tests in Beijing. Their designers say with these robots, rescuers will be able to buy more time to save lives during an earthquake.

This kind of robot looking like a helicopter is a flying robot. It’s about 3 metres long, and it took about 4 years to develop the model. Its main functions are to collect information from the air, and send goods of up to 30 kilos to people trapped by an earthquake. It has a high-definition 360-degree panoramic (全景的) camera. It can work day and night and is also able to send the latest pictures from the quake area.

Dr. Qi Juntong, a researcher at Chinese Academy of Sciences, said, “The most important feature of this flying robot is that it doesn’t need a distant control. We just set the destination information on it, and then it takes off, and lands by itself. It flies as high as 3,000 metres, and as fast as 100 kilometres per hour.”

This robot has a different function—it can change as the environment changes. Its main job is to search for any signs of life in places where human rescuers are unable to go. As well as a detector (探测器) that finds victims and detects poisonous gases, a camera is placed in the 3-metre-long robot, which can work in the dark. Another use for the rescuers is the supply part, with its 10-metre-long pipe, people who are trapped in the ruins will be able to get supplies including oxygen and liquids.

Experts have said that the robots will enter production and serve as part of the national earthquake rescue team as soon as possible.

【推荐1】When you are in the UK, you must be very careful in the street, because the traffic runs on the left. You must look at the right first and then the left, and then you can cross the street. If the traffic lights are red, the traffic must stop. Then people on foot can cross the road. If the traffic lights are green, the traffic can go. People mustn’t cross. When you go by bus in the UK, you have to be careful, too. Always remember the traffic runs on the left. Have a look first, or you will go the wrong way. In many English cities, there are double-deckers(双层公共汽车).

You can sit on the second deck. It’s a good way to see the city. It’s very interesting.

【推荐2】The weather in Sunshine Town is very nice these days. So why not go outdoors to have a picnic（野餐）? Here are some of the top picnic places in Sunshine Town.

What will you do with a huge bag of waste when you see the four waste bins in your community (社区)? They are “Wet”, “Dry”, “Recyclable” and “Harmful.”

Many people know the importance of waste sorting, but they just don’t know what falls into which kind. This makes it see a little time—taking and difficult.

As a pioneer city, Shenzhen is also taking steps to encourage people to do waste sorting. Not only has the government tried hard to tell the public about the different four kinds of waste through posters and media, but also it is going to give prizes to people across the city. The total prize is 62.5 million yuan. As long as they take part in waste sorting, everyone has a chance to get the money. The purpose is to help people form a green idea of thinking of waste sorting as a good behavior.

Take Meilin No. 1 Village as an example. After several months of efforts, most people there can now sort out kitchen waste before throwing it out between 7 p. m. and 9 p. m. each day at proper places. The amount of sorted kitchen waste has increased from several hundred kilograms to about two tons.