Sometimes the easiest way to get somewhere is on the back of a bike.

More and more people are using cars in many places in Africa today. However, things are different in Malawi. Bikes are the most popular in this African country.

Bike riding is a way of life in Malawi. People use them to carry heavy things. They also use bikes to carry people, especially tourists. These years, taking a “bicycle taxi” to travel around Malawi has become quite popular among tourists from all over the world.

If you go to Malawi, you will find a lot of bike taxis waiting on the sides of the roads. The riders make the bikes comfortable for passengers to sit on. You can jump on a bike taxi and get around at a very low cost.

Alice is a 21-year-old student from Canada. She enjoys the special bike riding a lot. “I really like the bike taxi,” she says. “It’s easy and cheap.” Alice usually pays 1 dollar for going shopping in town.

28-year-old Panjira Khombe began to ride a bike taxi two years ago. The young man enjoys this job. “I make boats in the past, but that’s a hard job. Being a bike taxi rider is easy for me and I don’t mind carrying heavy people,” he says.

The United Nations has 6 official (官方的) languages. Each of them has their own days with the aim to show the rich history and culture (文化) of each language. UNESCO first created (创造) Chinese Language Day in 2010 to celebrate Chinese as one of the six official languages of the United Nations.

The first Chinese Language Day was on November 12th. But since 2011, it has been on the April 20th. The date was chosen from Guyu to remember Cangjie. Cangjie is very important in Chinese culture. People believed he created Chinese words 5,000 years ago. In old stories, it’s said that Cangjie had 4 eyes and he was good at observing (观察). He often watched the sun and the moon with his upper 2 eyes, and mountains and rivers with the lower 2 eyes. His long-time observation made him create the earliest written words according to the shape of things.

On Chinese Language Day, there are different activities to celebrate the Chinese language and the theme (主题) is different each year. In 2022, “China Chic” was chosen as the theme. Chen Xu, an officer said, “Choosing this theme, we hope to spread what most of Chinese people like today so that foreigners can know more about Chinese culture and have a better understanding of China.” A video festival called “Foreigners look at China Chic” was held. In the videos, foreigners showed their love of Chinese fashion.

Chinese Language Day is an important carrier for Chinese learners, lovers, and users from all over the world to get close to Chinese. Nowadays, more than one sixth of world’s population speak Chinese as their first language—that’s more than any other population in the world! Learning Chinese is more like a key to knowing China and feeling the beauty of Chinese culture.

A．

B．

C．

D．

In a world where technology is king, it is getting more and more difficult to keep up with the ‘R’s— VR. AR, MR, (iPhone) XR and the list goes on.

Many people have trouble telling the differences between augmented reality (AR) and virtual reality (VR) . AR and VR mean that we experience something that isn’t there, but it feels like it is. As a result, it is easy for users to be blown away and wonder what is real and what is not. In short, at the heart of AR and VR are two very similar technologies. Both offer experiences to users, most widely used in areas such as online shopping and as part of psychological treatments.

_______ The main difference lies in the way of transport. Simply put, VR ‘transports’ the user to another world instead of the real one. It uses computer technology to create a 3D environment. Users not only view a screen in front of them, but also use as many senses as possible, such as vision, hearing, touch, even smell. VR is used widely in many theme parks, like Disneyland. Imagine opening your eyes and seeing a new world created by the computer all around you; you can move in this environment and even communicate with it. That’s what VR is like. For example, VR has the power to make users feel as if they are falling. So sometimes while playing games, users become nervous and even scared.

AR, does not shut out the real world, but adds digital graphics to a live view often by using the camera on a smartphone. Users would not be ‘transported’ to another world but instead, they would see graphics created by computers with what they see in real life. AR makes it possible to create many interesting apps, such as the navigation. It does not, change the whole view of what users see. unlike VR.

Thanks to new technology and successful games, AR and VR users already have a lot of choices. AR and VR are both powerful technologies which are still relatively new to many users. However, they have already begun to shake things up in the gaming world. The worlds of AR and VR aren’t just here: they’re getting bigger and better by the day.

A．

B．

C．

D．

10 . The scientific method is used for simple experiments that students may do in the classroom or very difficult experiments that scientists are doing all over the world. It is a way of thinking that helps you to avoid drawing incorrect conclusions.

There are usually four steps in the scientific method, including observation (观察), hypothesis (假设), experiment, and conclusion. The steps may not always be completed in the same order, but the first step is usually observation and asking a question about your observation. For example, you had a sick stomach, and ate a candy bar. An hour later, you observed that you felt much better. Here, you can ask a question, such as, “What makes a sick stomach feel better?”

The second step is to state a possible answer to the question, or a hypothesis, such as “A candy bar makes a sick stomach feel better” . A good hypothesis includes three things: The explanation for the observations, it is able to be tested, and it will usually predict new outcomes or conclusions.

The third step is the experiment, to test the hypothesis. An experiment is a test which will either challenge or support the hypothesis. The hypothesis will then be true or false.

The final step is to think about what happened when you tested the hypothesis and draw a conclusion. The conclusion will either clearly support the hypothesis or it will not. If the results support the hypothesis, a conclusion can be written and you can share it with the rest of the world. If it does not support the hypothesis, you may choose to change the hypothesis or write a new one based on what was learned during the experiment.