1 . Small batteries are big problems, but nobody really pays attention to where they end up. Researchers at the Cellulose & Wood Materials Laboratory are working to address this problem. Their new research paper describes a water-activated paper battery developed from environmentally friendly materials that could eventually present a sustainable alternative to the more harmful batteries common in low-power devices.
The paper battery has the same key components as standard batteries but packages them differently. Like a typical chemical battery, it has a positively charged side called a cathode, a negatively charged side called an anode, and a conductive material called an electrolyte (电解质) between the two. A traditional battery’s components are enclosed in plastic and metal; in the new battery, the anode and cathode are inks printed onto the front and back of a piece of paper. That paper is filled with salt, which dissolves (溶解) when the paper is dampened with water. The resulting saltwater solution acts as the electrolyte.
Sustainable materials were a precondition for the researchers, who considered only safe and plentiful ingredients to create their device. “We were fairly confident that we would have something that would work in the end, but developing these materials and ink systems is challenging,” says Gustav Nyström, senior author of the study.
After trying hundreds of formulations for the battery components, the researchers settled on a graphite ink to make the cathode, a zinc ink for the anode, and salt-filled paper to create the electrolyte.
When the paper is dry, the battery is shelf-stable. Add just a couple of drops of water, however, and the salt dissolves, allowing electrons to flow. Once the paper is dampened, the battery activates within 20 seconds. The new battery’s operating performance declines as the paper dries. When the scientists re-wet the paper during testing, the battery regained functionality and lasted an hour before beginning to dry out again.
Although the researchers demonstrated that their battery could power an alarm clock, the paper batteries are unlikely to replace standard ones on store shelves. Nyström envisions a future where these paper batteries could make their way into products within the next two to five years. “The performance that you see on this device, I think, is enough for a lot of other applications already,” he says. It is mostly a matter of increasing production and integrating the batteries into systems such as diagnostic tests and environmental sensors.”
1. How is the paper battery similar to the standard battery?| A．The key components are environmentally friendly. |
| B．They are both packaged in plastic and metal. |
| C．They both have two charged sides and an electrolyte. |
| D．Both batteries can operate for only an hour. |
| A．Heating the salt | B．Charging the electrons |
| C．Drying out the battery | D．Wetting the paper |
| A．major technological breakthrough will be made in the near future |
| B．all home appliances will be powered by paper batteries |
| C．the future for a wide application of paper batteries is not far off |
| D．paper batteries will have longer shelf life than traditional ones |
2 . In 2009, when Qatar (卡塔尔) bid to host the 2022 Football World Cup, it promised a carbon-neutral (碳中和) event. Even back then, the prospect of neutralizing the carbon-dioxide emissions (排放) generated by hosting hundreds of thousands of fans in newly constructed stadiums, in a desert state, seemed fanciful. So it is proving. In their greenhouse-gas accounting report, published last year, FIFA (国际足联) and the Qatari organizers estimated that the World Cup would generate 3.6 million tons of CO2 emissions. Estimating emissions for big sporting events is a relatively new practice and methods can vary, but that figure is higher than any recent World Cup or Olympics.
It is also likely to be a significant underestimate. A report in May 2022 by Carbon Market Watch (CMW), a climate watchdog (监督者), found that the official forecast failed to account accurately for the emissions generated from stadiums. FIFA, which insists its method is “best in practice”, reckons that the majority of the emissions (52%) will come from fans and players travelling to Qatar, while less than 25% are from stadium construction. That is because organizers expect these stadiums to be used for years after the World Cup, spreading their carbon footprint way into the future.
CMW believes such an excuse is far from reasonable. Before the World Cup, Qataris were able to get by with only one stadium, it points out. Consequently, it estimates that the emissions from stadium construction for the World Cup are undercounted by a factor of eight. It puts the real figure at 5 million tons. Though it amounts to less than 0.02% of the world’s annual emissions, sports teams and organizations should have set a positive example in this.
To remove the doubt from outside, Qatar has established the Global Carbon Council (GCC), a dedicated environmental agency. Beyond adjusting for World Cup emissions, the GCC will promote a path to “a low-carbon future”, a great step for a country with the world’s highest emissions per person. Yet the agency is still at its early stage. Only six projects, saving less than 600,000 tons, have been approved so far.
1. What is the main problem Qatar and FIFA are faced with at present?| A．The 2022 World Cup isn’t as successful as it should be. |
| B．They may fail to keep the promise to hold a green event. |
| C．The figure they published is higher than that of other events |
| D．They are unfamiliar with the new practice of the World Cup. |
| A．By insisting on its way of environmental protection. |
| B．By promising to use the new stadiums for more years. |
| C．By blaming the greenhouse-gas emissions on travelers. |
| D．By cooperating with Carbon Market Watch for instructions. |
| A．5 million tons accounts for a little of the annual emissions. |
| B．The stadium construction for the World Cup sets a bad example. |
| C．The method they employed in estimating the emissions is unscientific. |
| D．There will be more stadiums than Qatar actually needs after the World Cup. |
| A．The GCC is an agency specially established for the World Cup |
| B．The Qataris attach great importance to environmental protection. |
| C．The Qataris need to make more efforts to hold a carbon-neutral event. |
| D．The GCC has achieved a lot in cutting down greenhouse-gas emissions. |
3 . There is a growing hope in the field of earthquake prediction (预测) due to artificial intelligence (AI), which is challenging the widely accepted belief that earthquake prediction is impossible. Through a test carried out in China, a team of researchers from the University of Texas, Austin have developed an AI algorithm (算法) that can predict 70% of earthquakes up to seven days in advance.
The research team believes that their method worked well because they used a simple machine learning method. Based on the team’s understanding of earthquake physics, the AI was provided with a set of data on earthquake, and then taught itself by using a five-year earthquake record database. After the learning process, the AI was able to predict earthquakes by listening and analyzing signs of incoming earthquakes within the background rumblings (隆隆声) in the Earth.
This achievement undoubtedly marks a milestone (里程碑) in the field of AI-powered earthquake prediction research. “Earthquakes arrive without warning,” explains Alexandros Savvaidis, a lead researcher at the Texas Seismological Network Program (TexNet). “It’s a matter of milliseconds, and the only thing you can control is how well you are prepared. Even with the 70% accuracy, this is a huge achievement which could help reduce economic and human losses and contribute to earthquake preparation worldwide.”
Although it remains to be seen whether this method will be as effective in other areas, the researchers believe that if used in areas with more earthquake tracking networks, their Al algorithms deliver even more accurate predictions. The next step is to test AI in Texas, since UT’s Bureau TexNethas 300 earthquake stations and a continuous recording history of over 6 years, making it an excellent testing ground for these purposes.
In the long run, the authors hope to combine the AI system with physics-based models. This combined strategy could be particularly important in situations where data is poor or lacking. “There’s still a long way to go, but many advances like this, taken together, are what drive science forward,” said Scott Tinker, the bureau’s director.
1. How does the AI algorithm predict earthquakes?| A．By using algorithms to collect data. |
| B．By identifying data from the satellites. |
| C．By analyzing background sounds in the Earth. |
| D．By understanding earthquake physics. |
| A．The ways to reduce losses in earthquake. |
| B．The significance of developing the AI prediction. |
| C．The importance of earthquake preparation. |
| D．The limitations of current earthquake prediction methods. |
| A．Combining the system with physics-based models. |
| B．Applying the AI approach to other fields. |
| C．Improving earthquake tracking networks in Texas. |
| D．Conducting tests of AI in Texas. |
| A．AI: Reducing Earthquake Losses |
| B．AI: Stopping Earthquake from Happening |
| C．AI: Rewriting the Earthquake Preparation Rules |
| D．AI: Predicting 70% Earthquakes |
4 . When we talk about protecting the environment and sustainability, we focus on factories and industries that produce cars, household objects, and materials used in production. However, the carbon footprint of the fast fashion industry is sizeable and should not be overlooked.
Fast fashion has seen quite the rise recently, with stores spreading far and wide all over the world. They mass-produce one collection after the other, always on trend, and always encouraging consumers to follow the said trend. However, what about the impact this kind of business model has on the environment?
The clothing industry is the second-highest polluter of water. Factories of fast fashion poured poisonous chemicals into clean water supplies because clothing production is a land-and water-intensive industry, responsible for 10% of all carbon release globally. Even after the clothes are produced in factories, they can still affect the environment. For example, polyester (涤纶) can release plastic microfibres into the water system, which contributes to the already existing plastic problem.
The fashion industry is indeed causing great harm to the environment; moreover, the clothes being made are not meant to last. In most cases, the quality is not there, and the clothes are only used a few times before being discarded. Before the rise of fast fashion, clothes were made to last and were not meant to have the high turnover that clothes have.
There are many designers who are committed to mass-producing their clothes in sustainable ways. Some big brands are also trying to make improvements in the materials they use and the mass-producing process, but big efforts are needed if we are going to see a change. What we as consumers can do is shop consciously and consider how the clothes have been made and whether we truly need that piece or not.
1. What can be inferred about fast fashion from the first two paragraphs?| A．It stresses offline sales. | B．It affects the environment seriously. |
| C．It is a sustainable industry worldwide. | D．It is popular among young consumers. |
| A．It makes clothing last long. | B．It reduces carbon footprint. |
| C．It results in water pollution. | D．It lowers the production cost. |
| A．Thrown away. | B．Picked up. | C．Passed down. | D．Turned in. |
| A．Support big fashion brands. | B．Stop buying long-lasting clothes. |
| C．Think twice before shopping for clothes. | D．Change dressing styles frequently. |
5 . For Christina and her team, planting trees isn’t the only goal. She hopes to employ residents, especially youth, to get their hands in the dirt and see how they can grow change.
Groundwork Bridgeport hired a team of youth and trained them to provide ongoing care for trees in the community (社区). They serve the neighborhoods where they live, monitoring the trees, providing basic care, and connecting with their neighbors. Their “patrolling” is improving each tree’s longevity while giving them valuable experience and a good payment.
“We’re using data and technology to be able to find even down to the specific city block of where trees are needed the most,” said Amy Lester, Ventures Project Coordinator, Arbor Day Foundation. With a NatureQuant NatureScore® of 10, the east Bridgeport neighborhood was flagged as desperately needing trees. NatureQuant is a tech and research company that helps the Arbor Day Foundation determine where trees are needed most in urban spaces.
The most recent program that happened in partnership with the Arbor Day Foundation was a tree giveaway. Fifty trees were given to residents of the neighborhood identified by NatureQuant.
Residents showed their support for the effort by coming out in full force. They know what the trees mean to their community, to their health, to the next generation of those growing up in east Bridgeport.
1. What did Groundwork Bridgeport hire a youth team to do?| A．To cut down trees. | B．To provide guidance. |
| C．To care for trees. | D．To get a good payment. |
| A．By counting numbers. | B．By using technology. |
| C．By giving away trees. | D．By observing trees. |
| A．Far-reaching. | B．One-sided. | C．Short-lived. | D．Time-wasting. |
| A．A Tree Planting Plan by Groundwork Bridgeport |
| B．Employ the Next Generation of Tree Planters |
| C．A Tree Giveaway Program to Communities |
| D．Tree Planting Cooperation Between Communities |
6 . European shepherds (牧羊人) and ranchers (大牧场主) are taking the lead in forest fire prevention, by leading their animals to clear away underbrush that allows fires to grow too big, a new study shows.
In thinner forested areas, large herbivores (食草动物) were found in a study to be greatly effective in reducing forest fire risk. “In general terms, it is clear that wild and semi-wild herbivores like horses can reduce wildfire risk through their eating grass,” says Julia Rouet-Leduc, lead author of the study. “Such herbivores can be particularly effective in remote areas, where careful management can prevent wildfire and benefit wild nature in other ways.”
Smaller animals like goats and sheep are ideal for areas that lack natural predators (捕食者). There are no large predators in all of Italy, and without the risk of losing an expensive animal, the eating habits of these smaller animals kept on a farm make them perfect for clearing underbrush and things which larger herbivores can’t stomach.
But there were laws that prevent goats and sheep from entering woods in order to protect them. Since natural numbers of red deer, and other native herbivores have long since disappeared from European forests, the loss of sheep and goats meant that nothing prevented grass from spreading in forests, turning brushfires into dangerous disasters.
That’s why shepherds on Sardinia have written a letter to the Italian Ministry of Agriculture, asking not only to allow their animals to eat grass within the woods, but to create a restoration project of rural areas in Montiferru, where Italy’s worst wildfire in 40 years recently burned its way from the mountain tops to the sea.
Their plan is to bring in more shepherds to better control the fires, and encourage eco-tourism in the area, to incentivize the shepherds to stay. This is already seeing success through both private and public inspiring measures in Catalunya, Spain.
1. What do Julia Rouet-Leduc’s words mainly show?| A．Shepherds should keep large herbivores. |
| B．Herbivores can greatly help reduce wildfires. |
| C．Better management is needed to protect forests. |
| D．Wild and semi-wild herbivores lack natural predators. |
| A．They were not allowed by law. |
| B．They couldn’t feed well there. |
| C．They had been killed by hunters. |
| D．They had been eaten up by predators. |
| A．To ask permission to raise more sheep. |
| B．To protect woods from hungry goats and sheep. |
| C．To offer a way of protecting forests from wildfires. |
| D．To draw attention to Italy’s worst wildfire in 40 years. |
| A．Pay. | B．Prove. | C．Remind. | D．Encourage. |
7 . Off the coast of northeastern Queensland, Australia, near Magnetic Island in Florence Bay, the Great Barrier Reef corals (大堡礁珊瑚) are having a baby boom (激增).
“Every year there are more anrd more coral babies,” says Hillary Smith, an ecologist at ames Cook University in Australia.
That’s thanks to a simple but effective strategy for cleaning the region’s coral reefs: “seaweeding”. Like weeding (给……除杂草) a garden, seaweeding involves pulling big handfuls of large algae (水藻) off reefs and taking them away.
Experts say getting climate change under control is key to keeping the world’s reefs healthy. But meanwhile, local efforts such as seaweeding can help corals grow and reduce the effects of climate change.
The health of coral reefs around the world is dire: By 2050, 95 percent of the world’s coral could experience heat stress, according to a 2020 report by the Global Coral Reef Monitoring Network. Algae is a big problem: Already, algae cover has increased on two-thirds of reefs around the world, and one study published in 2021 showed that half the world’s coral reefs have died since the 1950s. Removing seaweed from reefs requires a great deal of work but is not complex, making it a good project for citizen scientists eager to help restore (恢复) reefs.
When the project first began in 2018, Smith says researchers weren’t sure if removing seaweed would benefit the reef or if removal might have the opposite effect in some way. But now, “It’s all looking really positive for the reef,” she says.
Volunteers are ready and waiting to help near Townsville and at other affected Australian reefs, says the Earthwatch Institute’s Fiona Wilson.“We need lots of willing hands to remove seaweed. It takes weeks of time,”she says. “But obviously recovery of the Great Barrier Reef is a passion for many people, so we draw volunteers.”
1. What contributed to the growth of the Great Barrier Reef corals in Florence Bay?| A．Local efforts to remove seaweed. | B．Reduced effects of climate change. |
| C．Fewer human activities in the region. | D．The use of new restoration technologies. |
| A．Strange. | B．Acceptable. | C．Excellent. | D．Terrible. |
| A．They were hopeful of it. | B．They were excited about it. |
| C．They were uncertain about it. | D．They were uninterested in it. |
| A．It is still a long way off. | B．It is less difficult than thought. |
| C．It will take hard work and skill. | D．It attracts and needs volunteers. |
8 . An earthquake is one of the most common natural disasters. It may cause great damage. So it is smart to learn some simple safety tips to protect yourself or your family members.
Fragile items (物品) like those made of glass are easily broken and should usually be placed on a lower surface, near the ground. Never place them near your bed, sofas and other furniture where you would be sitting or lying down. So when there is a strong movement, these pieces will fall on the floor directly, not on you.
There is a strong chance of short circuits and fire during an earthquake. Make sure you turn off power and gas immediately when an earthquake happens.
During an earthquake, lie under an object that is not easily damaged. Do not go near objects that could directly fall on you. Never use the elevator to go down. Stay inside until the shaking stops and it is safe to go outside. Research has shown that most injuries happen when people inside buildings try to go out. Use the staircases (楼梯) at all times.
If you are outdoors, do not take shelter under a tree, streetlights, electric poles or tall buildings. If you are driving, stop your car and stay in a safe place. Do not park your car under a tree or any tall object.
If trapped in ruins, cover your mouth with a handkerchief or clothing. Tap on a pipe or the wall so rescuers can find you. Use a whistle (哨子) if one is available. Never shout for help. Shouting can cause you to breathe in dangerous amounts of dust. Do not light a match because you may burn yourself.
1. The passage is aimed to tell readers_______.| A．how to prevent earthquakes |
| B．what to do during earthquakes |
| C．the loss caused by earthquakes |
| D．the rescue work after earthquakes |
| A．easily broken | B．easily found | C．costly | D．heavy |
| A．in a place where children can’t reach them |
| B．in the bedroom |
| C．in the cupboards |
| D．on a lower surface |
| A．go out of the building at once |
| B．turn off power and gas immediately |
| C．take shelter under a tree |
| D．shout for help |
9 . Wondering what you can do to celebrate Earth Day on April 22? You’ve come to the right place. We’ve gathered a comprehensive list of Earth Day activities, both fun and environmentally-conscious, to help raise awareness and make a difference. If you’re ready to learn more about joining the global celebration, initiating real change, and doing your part to save our planet, read on!
·Walk or ride your bike.
·Use a refillable water bottle.
Consider going with a stainless-steel refillable bottle for a super long-lasting option.
·Plant a tree.
Pick a tree species that’s native to where you live. If you’re unsure, ask an employee at your local nursery or garden department. Choose the best planting spot to meet the tree’s needs, dig a properly sized hole, and water the tree well to give it a good start.
·Visit a local farmer’s market.
Eating locally grown food is much better for the environment. For example, locally-grown food doesn’t have to be transported long distances to end up on grocery store shelves.
·
See if your community is holding an environmental fair. If your community doesn’t have one planned, consider starting one yourself! It’s the perfect day to get together for a fun and educational celebration of the Earth. Any money raised can go towards a local environmental restoration project or group.
| A．Attend a local Earth Day event. |
| B．Educate your community on environmental awareness. |
| C．Going car-free for the day will reduce harmful carbon emissions. |
| D．That means your money won’t be wasted on unnecessary spending. |
| E．If physically doing this is unrealistic for you, there are other choices! |
| F．Normally, plastic water bottles end up in garbage cans after a single use. |
| G．You’ll also be giving back to your community by supporting local farmers. |
10 . A possible treatment for Florida’s disastrous red tides (赤潮) took another step toward widespread use after successful testing in Sarasota Bay.
This study, led by UCF Assistant Professor of Biology Kristy Lewis, is the first successful test of any red tide treatment technology in open water using large water containers (容器). These containers — about six feet in diameter — extend from the waters’ surface to the ocean floor, allowing scientists to test real ocean conditions within a controlled setting. Four containers were treated with a clay (黏土) solution, while the other four served as a control.
The clay along with the Karenia brevis algae (海藻), which is responsible for Florida red tide, is put on the ocean floor. Lewis has spent the last three years carefully testing the impact of introducing this clay into the ocean ecosystem. She not only looks for changes in the water’s quality, but also wants to know how the clay affects the health of sea life. “We want to make sure the treatment is not worse than the disease,” she says.
At first, the test was simply to measure the influence of the clay on the ecosystem, but an unexpected red tide event caused Lewis to make the test practical. The results suggest the clay performed as expected, but there’s still a question of whether the bad effects of algae remain active on the ocean floor. Water collected during the test should provide an answer. Next steps depend on the test results, but there are already plans to survey what happened to the clay-coated algae when it’s used near seagrass beds.
Visiting Sarasota. Florida, in the middle of a red tide event reminded Lewis just how important the research is to keep the state’s coast healthy. Lewis says she’s prepared to go another three years if that’s what it takes to find an acceptable solution to red tides.
1. What was the purpose of the study?| A．To plant more seagrass. | B．To fight against red tides. |
| C．To collect clean water. | D．To produce containers. |
| A．Her original work plan. | B．An unforgettable tour. |
| C．Her team’s suggestion. | D．An unexpected red tide. |
| A．Work with the locals. | B．Report Florida red tides. |
| C．Further her research. | D．Study seafood industry. |
| A．Nature. | B．Business. | C．Education. | D．Lifestyle. |
