1 . While it throws out about 90 pounds of food per person every year, Japan doesn’t rank at the top of the world’s list of wasteful nations. Still, what’s thrown away represents a serious problem for an island nation with limited landfill space and a goal of greater sustainability. Reinvention can offer an alternative. A Japanese company is taking vegetable peels, cooking oil and other used foodstuffs and making entirely different products.
Concrete is the most widely used construction material in the world, and its key element, cement, is a major polluter of greenhouse emissions. So what if a more sustainable alterative were possible by making cement with food waste, which also would help reduce greenhouse emissions from landfills where that waste would otherwise be thrown away? That’s the idea behind Fabula, a Tokyo-based start-up.
Researchers at Fabula created a recipe to make food concrete by drying leftovers and pressing them into a mold (模具) at a high temperature. The company, founded by researchers at the University of Tokyo, began with items commonly thrown away like cabbage and orange peels but found that almost any food item can be used. It now takes mostly coffee grounds and tea leaves to make its cement. The product’s durability depends on the components.
Fabula is currently producing made-to-order household items, such as coasters and dishes, while awaiting its patent. The goal is to make furniture and larger structures once the technology is able to make the cement more durable. Food production companies that can’t avoid generating waste during their processes have reached out to work with the company. “We hope to become a matching service between companies that have food waste and companies who want to build things out of such materials,” said Takuma Oishi, Fabula’s chief commercial officer.
Since the cement is 100 percent eatable, it could create opportunities during disaster response when temporary structures need to be built quickly. The people inside might even turn to them for food. If the technology advances enough, Oishi suggested, someday we may be able “to eat the homes or furniture when necessary”.
1. Which problem Japan faces is mentioned in paragraph 1?A.Food waste. |
B.Garbage littering. |
C.Energy crisis. |
D.Environmental pollution. |
A.Using food remains in recipes. |
B.Finding a cheaper alternative to landfills. |
C.Making a novel building material from leftovers. |
D.Cutting greenhouse gases by recycling home devices. |
A.The diversity of food sources. |
B.The prospects of the company. |
C.The innovation of a traditional cuisine. |
D.The process of developing food concrete. |
A.It can fill stomachs. |
B.It’s solid and lasting. |
C.It can prevent disasters. |
D.It’s delicate but cost-free. |
2 . Plastic fishing nets, the so-called ghost nets, abandoned yearly in the sea—about 1 million tons—are more than just rubbish; they’re a killer. Fish, sea birds, and turtles get caught in the netting and die, with more species at risk.
Much shocked at this, Pranveer Singh Rathore, a materials-science engineer and materials R&D manager at Samsung, and his team set themselves the task of giving new life to the deadly nets. Last month, Samsung revealed a new line of Galaxy products made in part from recycled plastic fishing nets for the first time. The company estimates this year alone it can recycle over 50 tons of ocean-bound plastic into the key components that will go into its smartphones, tablets, and computers, thus taking a bite out of the global ghost nets problem.
It’s no small task to give waste fishing nets a second act. The nets are typically made of a substance called nylon which tends to dramatically degrade (降解) the longer it sits in the ocean and is exposed to the sun. “This makes it nearly impossible to use abandoned fishing nets directly,” Rathore explains. Besides, high-performance smartphone, tablet, or PC has to be waterproof and can survive severe weather. The nylon in the fishing nets falls far short of that level of durability (耐用).
To deal with that problem, Samsung last summer teamed up with two partners: one to collect and transform the nets into tiny nylon pellets (颗粒) while the other to strengthen their toughness and durability. The end result: The partners hit upon an eco-friendly and high-performance plastic material that’s being used to build the component parts for its latest line of products. For example, two parts of the Galaxy S22 mobile phone—the key bracket and the inner cover—are made of these fishing-net plastic materials. Samsung aims to use even more upcycled materials in future product lines.
“That’s the hope for the globe and our mission,” Rathore smiles.
1. What does the underlined word “this” in paragraph 2 refer to?A.Rubbish in the sea. | B.Recycling the deadly nets. |
C.Ocean species’ extinction. | D.Ghost nets’ threat to sea life. |
A.The low level of durability of nylon. | B.The second act of waste fishing nets. |
C.The great difficulty in reusing ghost nets. | D.The positive comment on Samsung’s products. |
A.They are made from tiny nylon pellets. | B.They put an end to the problem of fishing nets. |
C.They can stand up to water and severe weather. | D.They contain materials recycled from ghost nets. |
A.It makes plastic easier to break down. | B.It marks the shift of Samsung’s mission. |
C.It protects the planet from choking on plastic. | D.It raises public awareness of ocean exploration. |
3 . Bioluminescence (生物发光) is a natural phenomenon wherein a chemical reaction within an organism’s body produces light. It can be found in many places in nature — fireflies, some mushrooms — but mostly in the deep sea.
Recently, Rambouillet, a small historic French town, has teamed up with a company called Glowee to turn the city into a full-scale bioluminescence laboratory. The goal is to change the way in which cities use light. The company uses marine (海的) bacteria harvested from the coast of France. It makes some of the town’s public light up in the cool blue of bioluminescence.
These bioluminescent bacteria are stored in a seawater filled tube, giving the bacteria room to float around and light up. The light provided by the bacteria is part of their natural metabolism, so producing the light requires no energy other than that which is needed to feed the organisms. This makes it much more environmentally friendly and sustainable than electric light, which consumes a huge amount of non-renewable energy.
“On the way to lighting up the world with bioluminescence, you have to feed the bacteria and add water as they grow. That’s not so easy. The phenomenon will be very temperature-dependent and I doubt that it will work in the winter. Also, bioluminescence is not very bright compared to electrical lighting, though they have improved the light intensity,” Carl Johnson, a professor from Vanderbilt University said.
One potential solution to these issues — and one that Glowee is looking into — is to remove the biological aspect of the whole process. Theoretically, luciferase (荧光素酶) can be removed from the bacteria and used to create light instead of the bacteria itself. Because luciferase is non-living, it doesn’t need to be fed. Creating new means of sustainable lighting is a way of being environmentally friendly without plunging the earth back into darkness.
1. What do we know about Glowee?A.It is an ancient laboratory in France. |
B.It solves power shortages in coastal cities. |
C.It adopts bioluminescence as a light source. |
D.It feeds marine organisms to produce chemicals. |
A.The reasons for energy waste. |
B.The advantages of the marine bacteria as light. |
C.The living conditions of the bioluminescent bacteria. |
D.The difficulties of storing bioluminescent organisms. |
A.The bacteria work more efficiently under low temperatures. |
B.It will cost too much to improve the luminescence intensity. |
C.The application of bioluminescence enjoys a bright prospect. |
D.The development of bioluminescence faces many challenges. |
A.A Historic Town Lit up by Nature |
B.The First Zero-carbon City in the World |
C.A Reform of Producing Electricity in Cities |
D.The Discovery of Luciferase in Marine Bacteria |
4 . Earth Hour is organized by the World Wide Fund for Nature. It's a big event usually at the end of March every year. On this evening, people “go dark”.
It's true that turning off lights for just one hour saves only a small amount of power.
But on another level, a large number of people’s acting together sends a powerful message to governments and companies.
The logo(标识) of Earth Hour is “60+” .The number 60 is for the 60 minutes of Earth Hour.
A.But this is only the beginning. |
B.Earth Hour represents every hour of every day. |
C.After all, everyone has to answer for what they have done. |
D.Besides turning off the lights, people get involved in other events. |
E.It pushes them to take urgent measures by making changes to policies. |
F.That is, they switch off all unnecessary lights at the same time for one hour. |
G.The plus invites people to continue their action even after Earth Hour is finished. |
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6 . Scientists today are concerned about the growing number of species in the world that may soon become extinct. The United Nations, along with many governments, are trying to save these endangered species. To help resolve this issue, scientists have been trying to learn why species become endangered.
In the United States, loss of habitats is the main reason for species becoming endangered. As populations grow and cities or towns expand, nature is destroyed and the ecosystem is affected. Even small changes in one part of an ecosystem can have a big impact on another part of it. For example, deforestation may result in a change in ground temperature, which may kill off a certain kind of plant in the forest. Animals that eat this plant may suddenly find that there is no available food so they starve to death.
Another possible cause of endangered or extinct species is climate change and rising sea levels. As the Earth gets warmer, this has profound effects on animal and plant life everywhere. For example, rising sea levels make coastal areas unfit for birds to live in. Warmer temperatures melt the ice where polar bears live, wrecking their habitat and making it harder for them to find food. The rising seas also make it harder for polar bears to swim from the cold waters to frozen packs of ice so many of them drown.
There are several ways that people are trying to help endangered species recover. Ecologists study different species and try to find out more information about them to try and help. In Finland, for example, scientists found that a a decrease in the number of bogs(沼泽) was responsible for the falling butterfly population. Once they understood this, they could manage the butterfly population and help it recover. Governments are also passing laws to protect endangered animals. One example of this is an area near Hawaii with a seriously low fish population. The United States’ government has made it illegal for fishing boats to enter this area.
1. What can we infer from paragraph 2?A.Most endangered species are located in the United States. |
B.Cities and towns in the United States are growing too fast. |
C.Ecosystem changes can result in habitat loss and animal death. |
D.More trees need to be planted to prevent animals from dying out. |
A.Conserving. | B.Damaging. | C.Providing. | D.Dominating. |
A.Saving Endangered Species | B.A List of Endangered Species |
C.The Causes of Global Warming | D.How Polar Bears Became Extinct |
A.Some other ways to help endangered species recover. |
B.A brief discussion of polar bears and their diet habits. |
C.The impact of fishing laws on the development of Hawaii. |
D.Various opinions and debates concerning the cause of global warming. |
7 . A 2018 report found that food waste would increase by a third to 2. 1billion tons by 2030. Beyond the cost of the waste itself,thrown-away food generates a gas that contributes to climate change.
Home delivery meal kits(盒)can reduce food waste by more than two-thirds,but suppliers need to switch to reusable packaging to make them environmentally friendly.
Tailor-made meal kits cut waste by providing people with precise amounts of fresh ingredients(烹饪原料)for chosen recipes,meaning leftovers are minimized. But while the delivery services score well on reducing food waste,buying the same food ingredients from the supermarket almost always saves energy overall simply because meal kits use so much single-use packaging. The good news is that if people have meals that are tailored for consumption,they won’t overbuy and have less food waste. They fine-tune the amount of food to what they will actually eat.
Meal kits can reduce transport emissions(排放)if people go to the supermarket less frequently. If people only go and buy such goods as soap and toilet paper,they may only have to visit once every couple of months. A delivery truck can carry meals for a lot of people in the neighborhood. So dozens of car trips might be replaced with one truck trip.
However,study found that even if delivery meal kits reduced food waste to zero,they would still use up more energy overall than buying the same food from the supermarket unless the energy used for the meal kit packaging was cut by a fifth. The packaging is a killer if it’s single-use and thrown away,which can make all the environmental benefits lost. But if the packaging can be reused,if it’s glass bottles,like in the old days,we can get some benefits.
1. What can we learn about home delivery meal kits?A.They can cut down on daily expenses. |
B.They will totally solve the problem of food waste. |
C.They can keep energy consumption to a minimum. |
D.They will benefit the environment with reusable packaging. |
A.Attach. | B.Adjust. |
C.Raise. | D.Compare. |
A.reduce transport emissions | B.save more food |
C.shop only in the supermarket | D.shorten car trip distances |
A.Supportive. | B.Unfavorable. |
C.Objective. | D.Indifferent. |
8 . Kenya has been at the forefront of the global war on plastic since 2017, when officials outlawed plastic bags. In 2020, the government raised the demand with a ban on single-use plastics. Unfortunately, tons of industrial and consumer plastic waste continue to get poured into landfills daily. However, if 29-year-old Nzambi Matee has her way, the unsightly plastic garbage mountain will soon be transformed into colorful bricks.
The materials engineer’s search for an effective solution to controlling plastic pollution began in 2017, when she set up a small lab in her backyard. It took her nine months to produce the first brick and even longer to convince a partner to help build the machinery to make them.
She says, “I wanted to use my education in applied physics and materials engineering to do something about plastic waste pollution. But I was very clear the solution had to be practical, sustainable and affordable. The best way to do this was by channeling the waste into the construction space and finding the most efficient and affordable material to build homes.”
Her company, Gjenge Makers, now hires 112 people and produces over 1,500 bricks a day, which are made using a mix of plastic products that can’t be reprocessed or recycled. The collected plastic is obtained directly from factories or picked by hired locals from landfills and mixed with sand, heated at very high temperatures, and compressed (压缩) into bricks that vary in color and thickness. The resulting product is stronger, lighter, and about 30 percent cheaper than traditional concrete (混凝土) bricks. Most importantly, it helps repurpose the lowest quality of plastic.
Matee, recognized as one of the Young Champions of the Earth 2020 — the United Nations’ highest environmental honor — is far from done. Her dream is to reduce rubbish by increasing production and expanding her offerings. She says, “The more we recycle plastic, the more we produce affordable housing…the more we create more employment for the youth.”
1. Which word best describes Kenyan government’s measures against plastic?A.Temporary. | B.Effective. | C.Fruitless. | D.Unreliable. |
A.She turns knowledge into actual products. |
B.Her company’s funded by the government. |
C.She produces brick-making machinery herself. |
D.Her bricks are made from recyclable plastic waste. |
A.Its low cost. | B.Its wide range of uses. |
C.Its economic benefit. | D.Its environmental value. |
A.Matee’s achievement. |
B.Matee’s greater ambition. |
C.Multiple challenges Matee faces. |
D.Innovative solutions to plastic waste. |
9 . Plastic mobile phones cases and sweet wrappers, some more than 50 years old, have recently been pulled from the sea off the coast of East Yorkshire. The finds lead to growing concern among scientists about the long-term impact of plastic waste on our seas, with research suggesting it takes over 400 years for a drinks bottle to breakdown in the sea.
Notpla, a London-based startup company, is currently designing a seaweed-based replacement for single-use plastic packaging. Founded in 2014, the company has been sparing no efforts to further develop its product line.
The firm initially looked to seaweed as the solution to the world’s white pollution, because it is plentiful, grows quickly, doesn’t compete with land crops and doesn’t use chemicals, but absorbs carbon from the air. Design director Karlijn Sibbel says, “It can grow into the sea, where it actually has many positive benefits so it can create new ecosystems for other organisms to grow in.”
Sibbel says they look to nature as inspiration “for the ideal packaging” like the skin on a fruit. “A peel (果皮) will eventually be used as nutrients by nature, disappear and become part of the cycle.”
“The exciting thing is that this is a film that can replace most of the flexible packaging you see around,” Sibbel says. The potential contents could include coffee grounds or toilet paper. For food items, such as noodles, they have even experimented with adding flavors to the packaging, so that dissolving the bag could add seasoning to the food. “You can cook with it. And you can really start to rethink what we can do with these materials,” she explained.
The approach feels especially relevant as the world is coming to terms with the effects of decades of uncontrolled plastic production. Co-CEO Paslier says, “We’re excited to see our power in the foodservice industry and looking forward to moving into the fashion markets very soon.
1. What problem is mainly referred to in Paragraph 1?A.Energy crisis. | B.Food waste. |
C.Ecological disaster. | D.White pollution. |
A.How seaweed grows in the sea. |
B.How seaweed absorbs carbon from the air. |
C.Why seaweed can create more new ecosystems. |
D.Why seaweed was chosen as a plastic alternative. |
A.It can be digested by nature. | B.It’s as thin as a peel. |
C.It can transform into chemicals. | D.It bears a flavor enhancer. |
A.Doubtful. | B.Uncertain. | C.Promising. | D.Darkening. |
10 . As heat waves continue to ravage the planet, air conditioners are becoming more and more common. However, these "active" cooling devices are posing problems because the electricity consumption which most people are concerned about and the release of ozone-damaging chemicals worsen the greenhouse gas effect, resulting in the creation of heat islands and further thermal pollution. Therefore, "passive" cooling, which doesn't have such effects, has attracted considerable attention from both scientists and ordinary people in recent years.
In a recent study, a team of researchers from China and US presented an eco-friendly, low-cost smart coating to keep buildings cooler while consuming zero electricity. Infrared radiation-based passive cooling has been investigated since 2014, but challenges, mainly the expensive and unsustainable design, have greatly limited their large-scale and widespread application. Besides, the imbalance in cooling ability of these coatings during the day and night tends to lead to great day-night temperature differences as more heat is lost than gained at night.
The solution therefore requires a "smart" mechanism that can both enhance daytime cooling and minimize nighttime heat loss. To do this, the researchers created a new smart coating comprised of conventional building materials, including titanium dioxide nanoparticles, fluorescent microparticles, and glass microspheres that were engineered to reflect most of the sunlight. Specifically, the titanium dioxide particles effectively reflect sunlight through light scattering(撒播)while the fluorescent particles increase the amount of reflection by changing the absorbed sunlight into fluorescence emissions, which drive more heat away from the building. Meanwhile, the glass microspheres re-send mid-infrared broadband radiation, allowing not only heat loss, but allowing heat exchange to take place between the building and the sky.
The coating was tested on a model concrete building. Through this efficient heat exchange with the sky, daytime cooling was strengthened while nighttime cooling was reduced. The building's inside temperature was always maintained at around 26℃, even when the out-side temperature varied from 24℃ to 37℃ during the day. We believe this new coating will make it to commercialization soon, enabling a sustainable, passive cooling technology that could help to fight climate change and the global energy crisis.
1. What is the virtue of passive cooling?A.It is simple to design. | B.It uses no chemicals. |
C.It is smart. | D.It uses no power. |
A.It was hard to design. |
B.Its material was hard to produce. |
C.Its heat loss and cooling are imbalanced. |
D.It wasn't tested on a model concrete building. |
A.Metal. | B.System. | C.Platform. | D.Building. |
A.The principle of air-conditioning. |
B.The differences between active and passive cooling. |
C.A new coating to keep buildings cool without electricity. |
D.A new building to maintain its inside temperature without electricity. |