1 . Imagine a world where nothing ends up in landfill. Instead, everything can be reused and recycled, creating products that never reach their “end of life”. According to a recent report by the Circle Economy Foundation, only 7.2% of all used materials are being cycled back to be reused and recycled without creating waste.
An Italian company aims to change this by creating furniture products made from a plastic-like biomaterial, which is fully organic and biodegradable (可生物降解的), and can be used over and over again. Using fruit peel, orange seeds and coffee grounds collected from businesses in Italy, the company can redistribute products to the same businesses for use in their offices, instead of furniture made from common plastic. If, by mistake, any of the material ends up in the ocean, it doesn’t produce any microplastics.
Each product is made through a four-step process. First, the food waste is dried and crushed into a very fine powder. Then, the powder is mixed with a biodegradable plastic alternative known as polyhydroxybutyrat (PHB), with the fruit waste making the PHB more study (坚固的). The material is then turned into a filament (细丝) and, using a spool, put into a 3D printer.
Because a lot of food waste would be buried and incinerated in the landfill, which would produce lots of carbon dioxide, Reusing fruit peel and coffee grounds decrease carbon dioxide from the production of plastic, according to the director of operations in the company. He adds that the biomaterial is as sturdy as wood, and won’t begin to break down unless it’s touched by water, bacteria or acidity.
Despite its eco-friendly benefits, the biomaterial is expensive. It costs probably six times more than common plastic, and it is a very difficult and expensive process, so this is why many companies aren’t doing it.
However, the director is hopeful that in a few years, as-more consumers and businesses are forced to face the damage that unsustainable plastic is doing to the planet, the biomaterial will be much more widely used. “We really believe this is the material of the future,” says the director. “Little by little, a step at a time.”
1. What is a problem faced by the current world according to paragraph 1?| A．Pollution is becoming milder. |
| B．The rate of recycling is too low. |
| C．Plastic poses a threat to the ocean. |
| D．New material needs to be improved. |
| A．It is of benefit to the environment. |
| B．It is cheaper than common plastic. |
| C．It is given a welcome by businesses. |
| D．It has gradually replaced common plastic. |
| A．Damaged. | B．Burned. | C．Selected. | D．Recovered. |
| A．New Material: One Way To Regain Fruit Peel |
| B．From Landfill To Furniture: The Journey Of Furniture |
| C．Sustainable Material: The Future Of Eco-Friendly Furniture |
| D．Italian Businesses Using New Strategies To Manage Industrial Waste |
1.课后认识；
2.小事情，大环保。
注意：1.词数100左右；
2.开头和结尾已给出，不计入总词数。
Dear fellow students,
I am pleased to speak here on behalf of my group.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Thanks for listening!
3 . To produce the classic clothing, blue jeans, producers rely on indigo dye (靛蓝染料), the only molecule known to provide jeans’ unique, beloved color. While indigo itself naturally comes from a plant, growing demand for blue jeans throughout the 20th century gave rise to synthetic (合成的) indigo, which is now more commonly used.
Indigo is the dye that makes jeans blue, but it doesn’t mix with water. To dye clothes, usually, chemicals are needed to make the color stick to the cloth. But in Denmark, scientists have created a new way to dye clothes using an enzyme (酶), which is a kind of protein that can cause chemical reactions, instead of harmful chemicals. This new method is better for the environment and doesn’t use poisonous stuff.
The chemical process for dyeing blue jeans has persisted for the last century. Workers are exposed to the poisonous chemicals, which also pollute the environment near factories. Waste water from those factories often ends up in waterways, decimating local ecosystems and even dyeing rivers blue.
Ditte Hededam Welner, the study’s lead researcher, says their new enzyme works really well and is strong enough for making lots of jeans without breaking down. This enzyme makes dyeing with indican, which is like indigo, much less harmful to the planet — about 92% better than the old way.
However, the new method doesn’t fix all the environmental problems of making jeans. Making a single pair of jeans uses a lot of water — enough to fill many bathtubs — from growing the cotton to putting the final touches on the jeans.
Even though the new dyeing process is better for the environment, it’s not always easy or cheap to change to it. Welner’s team isn’t sure if jeans companies will find it easy or affordable to switch to this method. It costs a little bit more — just seven cents extra per pair of jeans — to use the enzyme for dyeing. But Welner believes it’s worth it because it’s much better for the environment.
1. Why was synthetic indigo created in the 20th century?| A．It made jeans’ color unique. | B．It was easy to dye cloth with it. |
| C．People liked jeans made from it. | D．People were in greater need of jeans. |
| A．Troubling. | B．Entering. | C．Destroying. | D．Defeating. |
| A．The colour is more beautiful than the synthetic indigo. |
| B．The market can keep stable goods supplies. |
| C．Enzyme facilitates the advance of science. |
| D．The dye is more environmentally friendly. |
| A．Production costs. | B．Environmental benefits. |
| C．Water consumption. | D．Laborer shortage. |
1. 现状说明；
2. 具体措施；
3. 发出倡议。
注意：
1. 词数80左右；
2. 可以适当增加细节，以使行文连贯。
Dear fellow students,
With the Earth Day approaching, I, on behalf of the Student Union, firmly advocate everyone to care about the planet we live on. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Student Union
The Amazon rainforest is the largest rainforest in the world, which plays
1. When did the earthquake take place?
| A．On Tuesday. | B．On Wednesday. | C．On Thursday. |
| A．He was badly hurt. |
| B．He was buried under a refrigerator. |
| C．He was slightly wounded. |
| A．He stayed in a refrigerator. |
| B．His father pulled him out in time. |
| C．Their house escaped the earthquake. |
| A．About 500. | B．About 5, 000. | C．About 50, 000. |
7 . Diving in the ocean, marine biologist Erika Woolsey has seen how coral reefs (珊瑚礁) are being damaged by climate change. It has made her decide to find a way to share her experience —including those who can’t easily explore the ocean.
Through her non-profit, The Hydrous, Woolsey is using virtual reality to bring the ocean to everyone. Scientists, filmmakers and divers are taking people on immersive (沉浸式的) virtual dives, attracting attention to reef damage and expecting action to protect our sea. About 25% of marine species depend on coral reefs. However, climate change, pollution and overfishing have done harm to around half the world’s shallow water coral reefs.
Twenty years of underwater exploration has given Woolsey a detailed understanding of the dangerous situations facing reefs. “I’ve seen this first-hand shift. Healthy colourful coral reefs become what look like the moonscape step by step,” Woolsey says.
It is through this experience that The Hydrous team set out to recreate with their award-winning film Immerse. Intended to watch with a VR headset, viewers join Woolsey for a nine-minute guided virtual dive on the coral reefs, immersed in a 360-degree underwater view.
They swim alongside sea turtles and sharks before witnessing the worsening of the reefs. The experience often brings out strong feelings. “As soon as people take off that headset and look me in the eye, they want to tell me a story about their ocean experience,” Woolsey says. “It’s that human connection to our ocean that will solve our ocean problems.”
Woolsey hopes advances in camera technology will allow her team to take more and more people to places in the ocean that are under-explored and places further away from human civilization. They are developing a virtual experience that will put the people in the role of a marine biologist, carrying out biodiversity surveys underwater, and even transporting the viewers to space to monitor global sea surface temperatures.
1. Why did Erika Woolsey set up The Hydrous?| A．To collect money for ocean protection. | B．To let the public know about coral reefs better. |
| C．To help people enjoy the ocean’s beauty. | D．To encourage people to protect the ocean. |
| A．Positive. | B．Negative. | C．Concerned. | D．Uninterested. |
| A．The story about the ocean. | B．The situation of coral reefs. |
| C．The connection with sea life. | D．The way to protect the ocean. |
| A．To bring more fun during the lockdown. | B．To help people learn more about the ocean. |
| C．To train talents for environment protection. | D．To discover more places that need protection. |
8 . Waterways are important for every country around the world. They provide not only water for everyday use but also routes for transport. However, due to industrial activity, many of them are now polluted.
Dakota Perry from the US has experienced water pollution first-hand. The 15-year-old high school girl told Alabama Local News that she spends a lot of time going on boat rides with her dad on the river behind their house. However, the river has become littered with plastic bags, bottles and cups. Perry wanted to clean up the water so she could continue to enjoy the river. So, with the help of her father, she designed a system to collect and remove rubbish in waterways.
In May, Perry put forward her solution at the Regeneron International Science and Engineering Fair held in Georgia, US, and received a Judge’s Award from the National Oceanic and Atmospheric Administration for her project.
According to the Science News for Students website, her system was inspired by the Dutch Great Bubble (气泡) Barrier in Amsterdam, which creates a flow of bubbles that trap waste and directs it to a catchment system. But Perry tried to challenge herself and make her system more environment-friendly. She planned to create a curtain of bubbles that stretched the river diagonally (对角地). The curtain would stop the floating rubbish and then push it toward the shore. Once there, a conveyor run by a solar-powered battery would carry the waste to a dustbin.
In her backyard pool, Perry used an air compressor (压缩机) to send air through a pipe full of holes to create a stream of bubbles. She experimented with different amounts of pressure to make sure there would be enough bubbles to form a full curtain. “For the bubble system to actually work and collect rubbish,” she explained to Science News for Students, “I have to know how much pressure the air compressor is supposed to push out.”
After she tested her system for collecting rubbish, Perry found that it worked better than expected. Next, she plans to work out how to use the power of the river to run the air compressor.
1. What motivated Perry to design a rubbish-collecting system?| A．Her father’s encouragement. |
| B．Her desire to protect a nearby river. |
| C．A visit to a science and engineering fair. |
| D．An invention of a Dutch high school student. |
| A．It was designed by Perry alone. |
| B．It makes power to run the air compressor. |
| C．It collects solar energy to remove rubbish. |
| D．It creates a bubble curtain to block rubbish. |
| A．Advantages of the system. | B．The way of testing the system. |
| C．The improvement on the system. | D．Challenges in the design process. |
| A．Efficient and ambitious. | B．Helpful and hardworking. |
| C．Responsible and creative. | D．Professional and adventurous. |
9 . Eradajere Oleita thinks she may have a partial solution to two of her country’s problems: garbage and poverty. It’s called the Chip Bag Project. The 26-year-old student and environmentalist from Detroit is asking a favor of local snack lovers: Rather than throw your empty chip bags into the trash, donate them so she can turn them into sleeping bags for the homeless.
Chip waters drop off their empty bags from Doritos. Lays. and other favorites at two locations in Detroit:a print shop and a clothing store. where Oleita and her volunteer helpers collect them. After they clean the chip bags in soapy hot water, they slice them open, lay them flat, and iron them together. They use padding (衬垫) and liners (衬里) from old coats to line the insides.
It takes about four hours to sew a sleeping bag and each takes around 150 to 300 chip bags depending on whether they’re single-serve or family size. The result is a sleeping bag that is “waterproof lightweight and easy to carry around”. Oleita told the Detroit News.
Since its start in 2020, the Chip Bag Project has collected more than 800,000 chip bags and, as of last December, created 110 sleeping bags. Sure, it would be simpler to raise the money to buy new sleeping bags. But that’s only half the goal for Oleita — whose family moved to the United States from Nigeria a decade ago with the hope of attaining a better life —and her fellow volunteers. “We are devoted to making an impact not only socially, but environmentally,”she says.
And, of course, there’s the symbolism of rescuing bags that would otherwise land in the trash and using them to help the homeless. It’s a powerful reminder that environmental problem and poverty often go hand in hand. As Oleita told hourdetroit.com, “I think it’s time to show connections between all of these issues.”
1. What did Oleita ask the snack lovers to do with their empty chip bags?| A．To turn them into sleeping bags. | B．To give them away to her. |
| C．To throw them into the trash. | D．To donate them to the homeless directly. |
| A．Its size is adjustable. | B．It is only made of old coats. |
| C．It has the function of heating | D．It is portable. |
| A．The aim of the project is more than social issues. |
| B．Poverty results from environmental problems. |
| C．Oleita’s project made 110 sleeping bags per month. |
| D．Oleita started the project mainly to raise money. |
| A．Hardworking and loyal. | B．Talented and social. |
| C．Responsible and creative. | D．Selfless and modest. |
10 . The Thermo Fisher Scientific Junior Innovators Challenge is a science competition for U. S. middle-school students. It's run by Society for Science, which also publishes Science News Explores. The 30 finalists in this year's competition traveled to Washington, D. C. and also showed off their research projects.
Sharanya Chudgar, 14 years old, is one of the finalists in the competition and built a trash-collecting robot. The wheeled machine of the robot uses sensors to spot litter and a pan to pick it up. The robot's metal-detecting sensor helps it sort garbage from recyclables. And a light sensor can let the robot's solar panel angle itself toward the sun, collecting as much energy as possible.
Sharanya got the idea to build her trash collector by participating in litter cleanups. "When I signed up to volunteer at our local trash cleanup, I saw how much litter poliution there was and I knew that I had to fix this problem," Sharanya says. "People do have very limited time and resources, right? But robots don't. So it was then that my project idea formed in my head."
"Building the robot is my favorite part of this project," Sharanya says. "Ever since first grade, I've loved building Legos and building my robot felt just like building a Lego. But this project was a completely new experience since I hadn't ever had any experience in robotics before. Throughout the project, I had to use tons of power tools and I even had to cut pieces of metal to certain lengths. Whenever I needed to use a power tool, I had to turn to my dad who was always there to help out if necessary."
"It might seem difficult at times, but sticking to this and changing just one variable at a time gets you the best results," Sharanya says. This middle school scientist is solving global problems of litter pollution. For some, a science project might be an assignment or a fun hobby. But for Sharanya, doing research can also be a chance to help others and make the world a better place.
1. What can be known about the trash-collecting robot?| A．It is environment-friendly. | B．Its solar panel can't turn. |
| C．It has multiple purposes. | D．Its shape is like a human. |
| A．The limited natural resources. | B．The encouragement from the locals. |
| C．Her trash cleanup experiences. | D．Her participation in the competition. |
| A．To express her thanks to her father. | B．To show her love for the project. |
| C．To explain the difficulty of the project. | D．To tell her interest in building Legos. |
| A．Unconcerned. | B．Negative. | C．Critical. | D．Approving. |
