3 . Accompanied by the rhythmic sound of bamboo strips (竹板), Yang Ziqi, 17, from Xi’an Qujiang No l High School, listens to interesting stories in the Shaanxi dialect. The stories range in subject greatly from the story of the Monkey King to instructions on garbage sorting.

“Shaanxi kuaiban is amazing. It can not only bring you great joy, but also broaden your horizons” said Yang. Shaanxi kuaiban is a traditional Chinese form of storytelling in the Shaanxi dialect to the rhythm of bamboo clappers. In June, it was recognized as an intangible cultural heritage at the national level. It can be performed by a group or solo. The art form can be traced back to the late Qing Dynasty (1644 — 1911). According to its performers, the art was originally used by farmers to share their knowledge and earn money. But now, more people perform Shaanxi kuaiban on different occasions-for example, at festival celebrations, parties and art shows.

Yang Jinlong, 45, is an experienced Shaanxi kuaiban artist. He first learned the art at the age of 9. Before that, he often went with his father, an amateur performer, to watch kuaiban performances.

“As a young boy, I was attracted to the art form because many of the stories are about heroes. The performer tells stories while playing kuaiban, and it’s easy for the audience to remember the stories since all the lines rhyme,” Yang said. He has practiced Shaanxi kuaiban for more than 30 years. Since 2003, he has been teaching the art form to young people. At 9 am on weekdays, he drives to primary and middle schools in Xi’an and teaches students about Shaanxi kuaiban until about 6 pm. Then, he returns home to prepare classes for the next day. On the weekends, he teaches for six hours each day at art education institutions in Xi’an.

Yang has made some adaptations to the art form to relate more to students. When he tells modern stories, Yang abandons the traditional gown and wears a suit. He also integrates many pop elements like tap dance, ballet, jazz dance and the rhythm of popular music into kuaiban performances. His stories focus on more trendy topics, like stories of heroes who have worked to alleviate poverty (扶贫), as well as the Chinese Olympic team.

“Art education is important for students in China. Just as many students learn to play Western musical instruments like the piano and violin, there are many people learning traditional Chinese folk arts, including Shaanxi kuaiban. They are committed and passionate,” Yang said.

4 . Although the weather is very hot now, the carnival of ice and snow is getting closer. The preparation work for Beijing Winter Olympic Games, which are expected to begin on Feb. 4, 2022, has entered its final stage. In January, 2021, the ice­making work on the “Ice Ribbon”, a landmark venue for the Beijing Winter Olympics, was completed.

In the Winter Olympics, where races can be won or lost by a small time gap, tiny imperfections in the ice can make all the difference. “It’s not just a hunk of ice like you’d normally think of, like ice cubes sitting in your freezer, ” told Kenneth Golden, a US mathematician who studies the structures of ice. “It’s a much more fascinating and complex substance than people would normally think.”

The first step for building any ice rink is to purify the water to remove dissolved solids like salts and minerals. Such impurities don’t fit in the regular hexagonal (六边形的) structure of ice that forms as water freezes. The more pure the water is, the more consistent the ice surface.

In addition to the need for excellence in the raw materials of ice­making, technology is also very important. As one of the most advanced technologies for winter sports venues, a carbon dioxide (CO₂) cooling technology has been applied on a large scale for the Beijing Winter Olympic Games. CO₂ is not new when it comes to ice­making. However, it has been gradually replaced by the man­made refrigerant, like Freon.

With increasing attention toward climate change, the old refrigerant has come into use again. As an element of the atmosphere, CO₂ doesn’t damage the ozone layer. Although CO₂ is a greenhouse gas, its greenhouse effect is much lower than that of other synthetic refrigerants. The Winter Olympics venues adopted CO₂ instead of Freon as a refrigerant in ice­making, which will reduce carbon dioxide emissions greatly.

“We believe these technological innovations will bring Beijing 2022 to spectators all over the world in a more impressive way, ” told Gao Bo from the Media Operations Department of the Organizing Committee of the Beijing Winter Olympic Games.

5 . In an ideal world, we would be able to devote as much time to sports as we feel we need. But in reality, with growing demands in both work and family, we can only jump at the chance for our physical exercise when we can. Making the most of that time to practice Yin Yang yoga, which mixes the dynamic and slow-paced elements of yoga, helps keep you active and relaxed.

Yin and Yang are the Taoist concepts representing a balance of opposite forces which are also interconnected. Yin is inactive, cooling, and negative, associated with the female force. Yang is active, warming, and positive, associated with action and movement. They are complementary to one another, as one cannot exist without the other.

Yin Yang yoga is a combination of high-energy movement which builds energy, increases strength and promotes stamina (耐力), followed by the more restful practice of Yin to give us a deeper stretch (拉伸) and calm the nervous system.

If you have a busy and active life you may feel more in Yang, so taking some cooler, slower Yin yoga practice into your routine may help you feel calmer and more balanced.

If you are practicing for an hour, divide the time in half, Warm up with sun salutations (拜日式瑜伽), continue into a dynamic flow and then move on to some standing postures. After half an hour your heart will be pumping, muscles tighten up and you are hopefully feeling energetic, but ready for a rest. Then pick five Yin postures to hold for 3-5 minutes, or even longer if you are enjoying them!

As ever with yoga, if you are a beginner or have health issues, always attend a class with a trained instructor first to guide you safely through the yoga practice and avoid injury.

7 . I went with some colleagues for dinner in a very popular local restaurant. It was ________ business time and the restaurant was crowded.

As we were waiting for a table, we heard a crash when a cleaning boy________the floor with all the plates he was carrying. There was ________ and no one was saying or doing anything. In a flash I remembered my ________ many years ago. At one time, I ________ when I was on business. I had a high fever but luckily was taken care of by two ________. Then this was my chance to ________ it forward.

I had learned some first-aid lessons before, so I ran to the boy’s side________, turned him on his back and screamed for someone to ________ a hot drink. The boy soon opened his eyes,________ what had happened. And so I ________ him by saying it was OK. I held the warm drink to his mouth till he________ it. At that time the manager arrived, who was kind enough to look after the boy. By the time all this was over, we hadn’t________anything yet, and we decided to go home.

I slowly walked home, not hungry any more, feeling________for the opportunity to pay forward the _______ I had received many years ago.

8 . Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling,and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels(分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would have the same effect.

Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales’ ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected.

Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

9 . Five years ago, French navy officer Chardon was listening to a radio program about the journey of the bar-tailed godwit (斑尾塍鹬) , a bird that flies 14,000 kilometers between New Zealand and Alaska. Chardon understood how dangerous the journey would be, as heavy storms frequently hit Pacific island communities. Yet, somehow, bar-tailed godwits routinely pass through the area uninjured. Chardon wondered whether learning how godwits navigate (导航) could help coastal communities avoid disasters. Could tracking birds help save lives?

This past January, a team began experiments designed to test Chardon’s idea. Researchers led by Jiguet equipped 56 birds of five species with cutting-edge animal tracking technology. The team were transported to remote islands in French Polynesia, where they attached tags (追踪器). These tags send the birds’ locations to the International Space Station, which sends the data back to scientists on Earth who can then follow the birds — all the while waiting to see how the birds respond to natural disasters.

The project is focusing on birds’ ability to hear infrasound, the low-frequency sound humans cannot hear. Researchers believe it’s the most likely signal birds would use to sense storms and tsunamis. In a 2014 study, scientists tracking golden-winged warblers in the central and southeastern US founded the birds flew up to 1,500 kilometers to escape from the outbreak of tornadoes that killed 35 people. This showed they’d heard the storm system in advance.

The team plan on tagging more birds across the Pacific to prepare for a potential tsunami. “I think if there’s one wave that spreads across islands, we should get data from different species at different locations,” says Jiguet. “That’d definitely show it’s worth continuing to tag birds and to develop local systems to better analyze this.”

Even if the attempt to develop a bird-based tsunami early warning system fails, the project will still help scientists protect birds. In that sense, the research will have already gained results by that time. Jiguet says their first season’s tracking data shows Hawaii is an important stepping stone for the birds they tagged — a useful clue to the protection of these species above rising seas.

10 . About 1.4 billion people around the world do not get enough physical exercise. The world’s adult population is about 5.6 billion, so that is tantamount to about one-fourth of the world’s adult population.

Researchers looked at 358 population-based studies between 2001 and 2016. Those studies referred to nearly 2 million people in 168 countries.

Regina Guthold was the lead author of the report. She said the study also found a wide range of physical activity levels for countries around the world. “Inactivity ranges from as low as 6 per cent in Uganda and Mozambique to 67 per cent in Kuwait. Four countries have prevalence (普遍) of inactivity of over 50 per cent. That’s Kuwait, America Samoa, Saudi Arabia and Iraq,” she said.

The report shows the levels of physical inactivity are more than two times as high in wealthy countries as they are in countries where people have low incomes. In wealthier countries, people are more likely to spend time sitting in offices. They are also more likely to use computers and electronic devices for entertainment.

There are actually many things people can do for themselves. If you work in a high-rise office building, take the stairs instead of an elevator. Go for a walk during your lunch break. Take more breaks during the workday and move around. If your workplace offers a gym or exercise classes, make sure to use them. At home, take walks with your family or friends after dinner.