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. 

One day, you open the fridge and find some moldy (发霉的) food. But before you can throw it away, your mother stops you. She doesn't want to waste it, so she cuts off the moldy part and eats the rest. Is it safe to do this?

Mold can grow on almost all kinds of food. It is usually green, white, black or gray. Mold makes food soft and changes its color. Moldy food tastes quite bad and it's not safe to eat.

If you find mold in soft food, just throw it away. Soft food, such as bread, tomatoes or hot dogs, usually contains(含有) water, which allows mold to grow easily below its surface. Bacteria (细菌)can also grow along with it.

But it's easy to remove mold from hard food because mold can't grow very deep inside this kind of food. According to BBC news, you should cut about 2.5cm around and below the mold to remove it. It's OK to cut the moldy parts out of hard food and eat the rest. But if the food is completely covered with mold, you should still throw it away.

Most kinds of mold are bad for us. But some kinds of mold can be used to make food. For example, penicillin(青霉菌) can be used to make many types of cheeses , such as blue cheese. These cheeses are safe to eat and they're quite delicious as well.

Holidays are very popular with students. They expect to relax and do something they like. However，what do holidays really mean to them？Usually，teachers will give them some homework and parents will ask them to read books，do extra exercises or take a lot of lessons. A junior high school did a survey among their students. It shows that a lot of students end up busier during the holiday. That is not only because they have many things to do，but also because they don't plan their time well. Instead of relaxing and enjoying their break，they often stay up late to finish their homework. And they find it the most painful experience. 

The following charts show some of their findings. Chart I shows different bedtimes of students during holidays. Many junior high school students go to bed late during holidays. They may forget that enough sleep is important for their health and better performance in learning. Chart II shows that more than 80% of the students read during their holidays，and 60% take extra lessons. Reading and learning remain an important part of holiday life，while doing housework and sports are not. 

During holidays，teachers should give homework which students are able to do and interested in. On one hand，teachers need to make sure students practise the key skills and knowledge when they are out of school. While on the other hand，it's important to make sure that students have enough time for something they like or want to explore. 

Parents should help their children make good plans for their holidays. Give reasonable advice and encourage them to read widely and take part in different activities. Finding a balance between having fun and improving themselves is the key to enjoying a good holiday. 

Do you know me? My {#blank#}1{#/blank#} name is Grace and my last name is Smith. I am 13. I am an {#blank#}2{#/blank#} girl. But I'm in Beijing now. My favourite colour is brown. My {#blank#}3{#/blank#} number is 867-986. 

I have two good friends at school. They are Cindy and Helen. They are very {#blank#}4{#/blank#} to me. Look! Here is a photo {#blank#}5{#/blank#} them. This girl is Cindy. She {#blank#}6{#/blank#} a red skirt. She likes red very much. This {#blank#}7{#/blank#} Helen. She likes red, too. But she is dressed in(穿着) a blue skirt. {#blank#}8{#/blank#} is this? Oh, it's {#blank#}9{#/blank#} . My favourite sport is {#blank#}10{#/blank#} , so I often play it with my friends after school. 

 If you love playing games, then you should absolutely try Black Myth: Wukong(《黑神话:悟空》), an action role-playing game. {#blank#}1{#/blank#} background of this video game is the classic Chinese novel Journey to the West, one of the Four Great Classic {#blank#}2{#/blank#}(novel) of Chinese literature. The game is full {#blank#}3{#/blank#} traditional Chinese cultural features(特征). It allows players {#blank#}4{#/blank#}(experience) a new world of Chinese imagination and natural beauty. The Monkey King {#blank#}5{#/blank#}(appear) in some video games in recent years, but seldom has that been in a game {#blank#}6{#/blank#} such traditional culture.

It has also caught the interest of the foreign players, but many of them lack this culture background. While playing the game, players can feel {#blank#}7{#/blank#} they are getting lost in an{#blank#}8{#/blank#} (amaze) world. Fans of Black Myth have even started posting videos online and {#blank#}9{#/blank#} (share) their understanding of Chinese history and mythology(神话). We can see that Black Myth is popular worldwide {#blank#}10{#/blank#} it uses beautiful scenes from China.