Red, green, blue, black and white are basic(基本的) colours.

    The world is colourful(多彩的). The sea is blue. The grass is green. Most countries in the world like green because it's a symbol(象征) of life(生命)，but people from England and Japan don't like it. Red is a popular(流行的) colour in China, but in Thailand(泰国)，it is bad to write names in red ink(墨水). It means someone is dead(死亡的). In Australia, people think the black cat can bring them good luck, but in America, people think the white cat is a lucky cat.

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Future astronauts could travel with emotional support robots

    To help astronauts of the future survive (幸免于) the mental (精神的) challenges that come with staying in space for quite a long time, space travelers‟ tasks could soon be accompanied(陪伴) by AI-powered, empathetic (有同理心的, 同感的) robotic helpers.

    Not only does space travel present astronauts with lots of physical stresses, spending months or years in such a physically demanding (要求高的) place with limited space and the same people can also raise many mental tests as well. According to MIT Technology Review, scientists are working to alleviate astronauts from some of the latter challenges by creating "an AI assistant that's able to feel human emotion and respond (做出反应) with empathy."

    While such a technology would prove itself useful by being able to predict the needs of the

crew members in space and "intervene (干预) if their mental health is in danger," it has the potential to be life-saving when humans choose to explore beyond Earth's gravitational field (引力场) and towards deep space.

    Though astronauts currently on the International Space Station have an intelligent robot to interact with called CIMON, it is short of proper emotional intelligence according to NASA CTO Tom Soderstrom. As a result, a team at the organization's Jet Propulsion Laboratory is working on a more complex (复杂的) emotional support companion that can control a spacecraft's functioning in addition to tracking the crew members‟ behaviours.

    Right now in the lab, an AI-equipped robot called Henry the Helper can be found walking around the grounds assisting visitors who appear confused or lost based on their facial expression. Two more emotionally intelligent robots are expected to be introduced later this year, one of which is said to be able to take part in conversations more complex than giving navigation(导航) assistance.

    The team's final goal is to make a companion named Fiona the Future a reality, an emotionally intelligent cross-platform system. Fiona, if all goes according to the JPL's plans, will help keep astronauts of the future stay mentally fit as they start their journeys to deep space.

In Guangdong, many local people start a day with morning tea at a tea house. For them, it is the most important meal of the day. They go out to meet friends, eat and have fun. Guangdong morning tea is not just tea. It is a special breakfast with different kinds of snacks and tea. The snacks are called "dim sum（点心）". There are rice noodles, rolls shrimp（虾卷）, dumplings, steamed buns（包子）, etc. For tea, Tieguanyin, Pu'er and Chrysanthemum（菊花）are the most popular ones. 

The tradition of drinking morning tea dates back to over 150 years ago in Guanadong. During the Qing Dynasty, there was a small restaurant in Guanazhou called "Yi Li Pavilion（一里亭）". It was a place for chatting（聊天）and serving tea and snacks. It was the first tea house in Guangdong. The local people fell in love with this kind of dining. So more and more tea houses appeared. 

Little by little, the local people got into the habit of drinking morning tea at a tea house. For the local people in Guangdong, drinking morning tea at a tea house is not only a lifestyle but also an important way of social communication. Friends meet and talk about their daily lives. Even many businessmen drink morning tea while discussing their business. If you get to visit Guangdong, don't forget to enjoy morning tea for yourself. 

Students sometimes fight (打架) at school. But how can you keep away from a fight? Here's something you can do. 

Be calm (冷静). Sometimes, you feel so angry that you really want to teach somebody a lesson. But being angry can't solve problems. A fight can't help, either. It may bring you more problems. In the school, everyone will be punished (惩罚), if he gets into a fight. There is no winner in a fight. 

Shout loudly. If you know someone is coming up behind you to attack, turn to the person with your hands up in front of your body and loudly say"stop" before walking away. Loud voice can usually make the attacker calm down. If the person doesn't stop, shout for help by calling your teachers. 

Learn to say no. Your friend may ask you to join in a fight, but helping him fight is not really helpful to him. If you really want to help him, try to ask him to stop. Also, you can tell him that if he has a fight, he may be punished. Then, try to know why he wants a fight and help him find a right way to solve the problem. 

If you follow my advice, you may keep away from a fight at school. 

Doorbells are the bells（铃）for people to ring at a door. When someone hears it, he or she can open the door. Do you know that you can ring a doorbell for fish, too?

Every spring, millions of fish migrate（洄游）along the river in the city to find better places to lay eggs. But in the river, there are many locks（水闸）. They stop fish from swimming through. Weerd Lock is in Utrecht, the fourth largest city in the Netherlands. When fish get there, they have to wait a long time before the lock opens for boats to pass through. The lock keeper there is glad to open the lock for fish, but he cannot tell when fish want to get through. So in 2021, Mark a scientist, came up with a good idea to help solve this problem— by using the fish doorbell.

Under the water near the lock, there's a camera. People from around the world can visit a website to see fish through the camera. When you see a group of fish waiting, you can ring the doorbell on the screen. And when the lock keeper notices it, he will open the lock for the fish.

In its first spring season in 2021, people around the world rang the fish doorbell more than100,000 times. If you want to join them to help fish, visit the website and ring the fish doorbell next spring!

AI (人工智能) makes our lives easier and better. Let's see the amazing AI.