Where did you go yesterday? Did you hear music at any of those places? Today most shops and restaurants play music.

Scientists believe that music ________ people’s behavior (举止). According to some scientists, the sound of Western classical music makes people ________ richer. When a restaurant plays classical music, people spend more money on food and drinks. When the restaurant plays modern music, people spend less money. With ________ music, people spend even less.

Scientists also believe that loud, fast music makes people eat faster. In fact, people eat their food faster when the music gets faster. Some restaurants play fast music during their ________ hours. This gets people to eat faster and leave more quickly. Restaurants want to make people spend more. Next time you hear music somewhere, be ________. It might change the way you do.

Every school has rules for students to follow. However, some students may see the ________ as a way which teachers control them. Sometimes, they’re unhappy and even feel ________. Well, if you think your life is hard, you might think about the ________ in ancient times. For some of them, life was really hard.

In the old days, people believed that teachers had to be very ________ and had the right to punish the students. Parents didn’t mind if teachers punished their children when their children didn’t do what they were ________ to do. Often, the stricter a teacher was, the more parents thought he or she was a good teacher.

In fact, following school rules can be very important. For example, running in the hallways could cause a student to ________. It may hurt himself for another person. Following the rules can also help the students in the classroom to learn ________ difficulty. In class, a teacher may ask students to raise their hands ________ they speak. If someone speaks out of turn, other students might not be able to hear the teacher ________. School rules can help students prepare for their own futures as well. When they ________ and go out on their own, they’ll soon find that they still need to follow rules.

Rules make the world much better. If there are no rules, life will be meaningless and in disorder.

Kids need to take exercise for at least 60 minutes a day. There is no need to let weather stop your kids from taking part in the activities they need. There are still lots of great activities that they can do to have fun at home.

Many people dream of traveling into outer space, However, spending too much time in space may cause health problems, according to NASA. That’s why astronauts shouldn’t spend more than six months on the International Space Station (ISS) at a time.

Muscle and bone loss

In a weightless environment, astronauts don’t need to use their muscles to support themselves, so their muscles start shrinking. To keep their muscles strong, astronauts need to exercise about 2 hours each day on the ISS.

Sleep disorder

In space, the sun rises every 90 minutes. It is hard for astronauts to get used to this light-dark cycle when they sleep. Also, they need to sleep in a sleeping bag that is fixed to a wall, and it is uncomfortable. Astronauts now have individual sleeping pods (分离仓) that help shut out some of the light. Still, studies have found that most astronauts only sleep about six hours each night, even though they should have eight and a half hours.

Brain change

Scientists have found that the position of the brain changes during space flight. It can affect how the brain deal with how we see, stay balanced and move around. That’s why some astronauts can’t control their movement and balance after returning to the Earth. Scientists have also found that astronauts may get used to this change after going on more space flights. But they still need to do more research.

Cosmetics (化妆品) are commonly used by women nowadays. But what did Chinese women use in ancient times?

Over the past several years, Wang Yifan, 29, has restored (复原) more than 30 kinds of cosmetics and tools from different dynasties. Wang has been interested in cosmetics since she was a child.

The restoration process of cosmetics includes the following steps: finding out what the ingredients (成分) are, doing experiments, comparing the test results and correcting mistakes if there are any problems. In her eyes, every step is a challenge. But finding the right ingredients is the most difficult part. Sometimes, the same ingredient might have different names during different periods.

Although the process is hard and takes plenty of time, Wang finds it worth the efforts. “Restoring cosmetics offers another way for people to learn Chinese history and know more about our nation,” Wang said.

Wang is not the only one that takes action to spread the Chinese culture. Wang Ping connects his job with it, too. Wang Ping became interested in making Chinese headdresses in 2020. He uses different kinds of materials. Surprisingly, almost most of them are “waste” as they come from clothes that are not worn anymore. “I’m trying to make the headdresses in an environmentally friendly way,” Wang said.

One of his most popular works is Chinese phoenix coronets (凤冠) which take from one week to up to a few months because it uses over 30 kinds of materials. The process of making one is a long journey, requiring careful checks and putting every piece into the right position.

So, would you like to learn about Chinese cultures through ancient cosmetics or pretty headdresses?

These days, it’s normal for teachers to give homework on apps.     46     Do students like to do homework on mobile phones? Zhang Hua, a 13-year-old boy from Fujian, said he doesn’t. “Sometimes the apps can’t tell what I’m reading in English.     47    ,” he said. He said his eyesight has gotten worse since he started using apps to do his homework.

However, Wang Xidi, from Anhui, 15, enjoys doing homework on apps.“The apps have big databases (数据库) of math exercises.     48    ,” she said. “But the bad part is that I can’t help playing with other apps while doing my homework.”

Zhou Tianyi, 12, from Sichuan, also thinks it’s fun to do homework on apps. Her teachers ask their students to dub (配音) English videos and make their own short videos. “But if I have too much other homework to do,     49    ,” she said.

But now, according to the Ministry (部门) of Education’s new rules, it is not allowed to use mobile phones to give homework or ask students to use mobile phones to complete their homework.     50