1 . In 2014, a sophomore student at the National Academy of Chinese Theatre Arts went with friends for a birthday celebration to Beijing Zoo. Little did he know that a chance _________ at the aquarium (水族馆) there would light a lifelong passion.

Fast-forward to today, Xu, a Beijing native, has _________ to the tropical island of South China’s Hainan province, where he serves as a coral _________ for a Sanya-based tropical biological laboratory attached to the Chinese Academy of Sciences.

Each day, he spends several hours diving deep under the waves to observe and _________ the growth and development of the creatures that _________ him all those years ago. Xu, who is nicknamed “coral man”, is _________ engaged on such social media platforms as Sina Weibo, where he regularly shares visually amazing photos and entertaining videos of corals. He aims to _________ individuals to take action in protecting coral reefs(珊瑚礁) and the oceans as a whole.

For Xu, who had been studying Peking Opera since childhood, becoming a coral conservationist was an _________ turn of events. After he first saw corals at the aquarium, he began to _________ the local market to learn about coral __________ from merchants who sell decorative plants, fish and corals. He also __________information online. Before long, he had set up a small fish tank at home and started cultivating a coral.

“The coral organism is quite sensitive to its environment and has extremely high __________ for water quality,” recalls Xu. “When I started growing coral, its state was not __________.” But as Xu gained more __________ about coral, including how to control factors like water temperature and pH levels, his coral gradually started to flourish. He also learned that coral reefs are known as “tropical rainforests” and “underwater gardens” of the ocean, providing a __________ for a quarter of all sea creatures.

2 . Nuclear pollution is a serious global   ___________, brought to the forefront by major accidents at Three Mile Island, Chernobyl, and Fukushima. These events have demonstrated the significant health and environmental risks _________by nuclear disasters. Not only have they caused immediate health problems, such as radiation sickness and increased cancer rates, but they have also _________lasting environmental damage and genetic changes in affected communities. As a result, nuclear pollution remains a pressing concern for governments, scholars, and individuals worldwide.

When nuclear accidents occur in coastal areas, the _________environment becomes a critical concern due to the crucial role that oceans play in _________the climate, ensuring food security, and supporting the livelihoods of billions of people globally. In recent years, the increasing threats to marine ecosystems from ocean pollution have _________public awareness of the need to protect the marine environment. Studies have shown that human activities pose a _________threat to marine environments, emphasizing the importance of improving environmental management and taking measures to mitigate environmental risks.

Following the Fukushima nuclear disaster in 2011, efforts to cool the reactors by pumping in seawater resulted in the _________of a significant amount of nuclear waste in the water storage tank at the Fukushima Nuclear Power Plant. _________attempts to manage this waste, the Japanese government’s decision to release nearly 1.26 million tons of nuclear wastewater into the Pacific Ocean over the next 40 years has faced opposition __________neighboring countries, local ____________, and international environmental organizations.

This __________poses serious risks to marine life, fisheries, and human health. Radioactive isotopes present in the wastewater, such as tritium, carbon-14, cobalt-60, and strontium-90, can accumulate in marine organisms and ultimately affect human populations through the food ____________. Therefore, there is an/a ____________need for further research and mitigation measures to __________the widespread impacts of nuclear pollution on the environment and human health.

3 . In the last 100 years, the global temperature has gone up by around 0.75℃. Such a small increase is causing sea levels to rise and ________ the habitat of many species of plants and animals. A(n) ________ of 2℃ in global temperatures could result in ________ of 30% of the world’s land species.

Sea levels in the UK have increased by around 10 cm in the last 100 years and experts ________ that global sea levels could rise by up to 59 cm in the near future. ________, areas which were land a few hundred years ago are now under water.

As a result of the changing ________, the world’s ecosystems are also changing faster than ever before. So what is ________ climate change? The main cause of climate change is the huge amount of greenhouse gases like CO₂ in the atmosphere, but the reason for this is the world’s population — you and me. As the ________ increases, more land is needed to provide food, and more energy is ________ too. Burning fossil fuels for heating, lighting, transport, or electricity ________ CO₂. Furthermore, humans breathe out CO₂ and trees “breathe in” CO₂ and produce oxygen — so by ________ trees, we are increasing the amount of CO₂ in the atmosphere and reducing the amount of oxygen. As a result of these ________, CO₂ levels are now at their highest for 800,000 years.

The biggest ________ we all face is to prevent further environmental disasters. We need to ______________ burning fossil fuels and start using renewable energy. If we can get enough ________ from renewable fuels, we can stop using fossil fuels completely.

4 . For many young Canadians, planting trees is more than just a job. It’s a way of ______   and it could be catching on, thanks to a popular ______ by Leslie. While working for a logging company, the 29-year-old filmed herself using the ______ method that allowed her to plant 4,545 trees in a single day. She said that the work is incredibly ______.

Planting trees is not easy work, according to Leslie. Not only is it ______ tiring, but it also exposes laborers to the bad weather. “It could start the day off ______ and then minutes later, it will just be raining or snowing. You never know what to ______,” she described. “There were some days that we were planting through a heat ______, so we had like 37 to 40 degree weather for several days straight and that was really ______.”

So far, Leslie has planted a total of 372,290 trees in the past few years. ______, she’s still nowhere near beating the Guinness World record. That honor ______ Kenny Chaplin, who once planted 15,170 trees in 19 hours. After 35 years on the job, he says he’d ______ it to anyone.

“I think every parent in Canada should ______ their kid out tree planting because it will turn them into a worker,” he ______ . “They’ll learn how to work, they’ll have ______ and they’ll have money in their pockets.”

5 . In 2014, Xu Yitang, a student at the National Academy of Chinese Theatre Arts, saw corals at an aquarium for the first time.

Little did he know the chance ______ with the creature would spark a lifelong ______. He began to ______ the local market to learn about coral farming from merchants selling plants, fish and corals. He also searched for information on relevant forums online, and before long, started ______ a coral in a small fish tank at home.

“The coral organism is quite ______ and has extremely high ______ for water quality,” recalls Xu. “In the beginning, its state was not good.”

As he became better ______ of the creature, he learned that coral reefs are known as “tropical rainforests” and “underwater gardens” of the ocean, providing ______ for a quarter of all marine life. ______, rising sea temperatures have led to coral ______. Xu felt an increasing sense of urgency and ______ to protect them.

Fast-forward to today, he ______ a coral conservationist in a Sanya-based tropical biological research center.

Each day, he spends several hours diving deep under the waves to observe and ______ the growth and development of the creatures.

His story has been ______ in the recently premiered online program Burning Youth that aims to use documentary shorts and in-depth studio interviews to ______ the inspiring stories of young Chinese people from various walks of life.

7 . Joseph Dituri hasn’t seen the sun for days. The biomedical engineer has been underwater, with the goal of spending 100 days there in the name of ________. Dituri is living in Jules’ Undersea Lodge in Florida. The100-square-foot hotel is his intended home until the mission finishes, where he’ll ________ his research.

The submerged stay, if ________, will also break the previous record of 73 days set by two Tennessee educators in 2014.

During the project, Dituri is attempting to ________ the effects of living in a high-pressure environment for a(n)________ period. The human body has-never been underwater that long, so he will be ________ closely. For example, he’ll be ________ to electrocardiograms, which measure the heart’s function. “I ________ there will be improvements to my health,” Dituri said. His assumption is not made ________—a previous study indicated potential ________ of pressure exposure to cell growth. Dituri hopes this journey could ________ the treatment for age-related diseases.

Beyond research, the project is also a chance to promote ocean ________ “The ocean is in a bit of trouble,” Dituri said in a video. “We also want to use the attention that the 100-day mission would draw to________ young people’s curiosity and passion.” Dituri will invite about 40 children to stay with him for 24 hours at a time.

“________ I only stayed 60 days, I eventually would turn a whole bunch of kids on to the exploration of the sea. That would be a ________,” he said in an interview.

8 . My 5-year-old daughter Kai walked around a bus stop, picking up candy wrappers and plastic bottles and throwing them in the waste bin. We were a visiting family here, but she was cleaning the sidewalk, which didn’t shock me, nor was I _________ when strangers looked at us.

Our cleanup project began when we drove past an empty field one day and Kai _________ the field was covered by _________ balloons. We had read about how animals could _________ balloons for food. “Stop,” Kai said, and I _________. Surprisingly, we found the field was full of much trash _________ the balloons. “Can we come back and clean it?” Kai asked. Then each Friday, we returned to have a(n) _________ cleaning.

However, it seems we can never _________ the trash completely. I feel something close to _________! Why are we making kids clean up our __________? It has everything to do with the planet we adults are leaving for kids. Plastic pollution is globally distributed and microplastics have even been discovered in human blood. It is not a __________ story that we have created trash but our next generation cleans up them.

Now Kai hopes to become a marine biologist to protect sharks one day. She still has many years to __________, if adults get serious about solving plastic pollution. We shouldn’t leave our next generation a __________ planet and expect them to save it.

The last time our family was at the beach, we still picked up plastic bottles. Most __________, though, we saw an octopus (章鱼) playing around our feet, a __________ of a harmonious habitat worth protecting.