The Palace Museum in Beijing, the capital of China, is becoming waste-free. The 720,000-square-meter structure has managed
While
By launching the campaign, the Palace Museum is taking a science-based and cautious approach to waste. The target is to minimize the generation of waste that needs to be buried
Up till now,
2 . For the history of life on Earth, organisms have relied on the light of the sun, moon, and stars to find their way and schedule their lives. While the beginning of electric lighting in the late 19th century may have benefited humans, it has caused problems in the natural world. Among the impacts of artificial light at night(ALAN), light pollution lures migrating birds to cities with shocking consequences, contributes to the alarming decline in insect populations, and convinces sea turtle babies to amble(缓行)away from the water instead of towards it.
Now, a new study from the University of Plymouth adds another disappointing finding about how ALAN is affecting the creatures with whom we share the planet: Light pollution from coastal cities can trick corals(珊瑚)into reproducing outside of the optimum times when they would normally reproduce.
Using a combination of light pollution data and spawning(产卵)observations, researchers were able to show for the first time that corals exposed to ALAN are spawning one to three days earlier and closer to the full moon compared to those on unlit corals. “That shift may reduce the survival and fertilization success of gametes(配子)and genetic connectivity between nearby lit and unlit coral systems,” they explain.
“Corals are among the most biodiverse, economically important, and threatened ecosystems on the planet,” write the authors of the study.
“Climate change has led to mass bleaching(褪色)events. Habitat destruction, fisheries, and pollution have reduced corals substantially since the 1950s,” they write, adding, “The complete loss of corals is anticipated over the next 100 years.”
If we want to reduce the harm ALAN is causing, we could perhaps look to delay the switching-on of night-time lighting in coastal regions to ensure the natural dark period between sunset and moonrise when coral reproduction remains undisturbed.
1. Why is the first paragraph written?A.To present the topic of the text. | B.To advocate energy conservation. |
C.To explain a natural phenomenon. | D.To provide background information. |
A.Possible. | B.Appropriate. | C.Flexible. | D.Sensitive. |
A.Extinction. | B.Losing value. |
C.Terrible diseases. | D.Exposure to moonlight. |
A.Creatures Rely on Natural Lights to Schedule Their Life |
B.Night-time Lighting Shortens Natural Dark Period |
C.Coastal Lights Trick Corals into Early Spawning |
D.Light Pollution Leads to Serious Consequences |
3 . Bees are more than just honey-makers, They are essential pollinators (传粉者) that help maintain the balance of our ecosystems and the diversity of our crops. Bees are among the most diverse and plentiful insects on Earth, with over 20,000 species worldwide. They belong to the order Hymenoptera (膜翅目昆虫), which also includes wasps, ants, and sawflies.
Bees have evolved to feed on nectar (花蜜) and pollen from flowers, and in doing so, they transfer pollen from one flower to another, enabling fertilization (受精) and reproduction. This process, called pollination, is essential for the survival of many plants, especially those that produce fruits, nuts, seeds, and vegetables that we eat.
According to the Food and Agriculture Organization (FAO), bees and other pollinators affect 35% of global agricultural land, supporting the production of 87% of the leading food crops worldwide.
Pollination also enhances the quality and quantity of the crops, as well as their resistance to pests and diseases. Without bees and other pollinators, our food supply and our biodiversity would be at risk.
Unfortunately, bees are facing many threats, such as habitat loss, pesticide use, climate change, diseases, and invasive species. The FAO estimates that 16.5% of vertebrate (脊椎动物) pollinators and 40% of invertebrate pollinators, such as bees, are facing extinction. This could have serious consequences for our food security, our livelihoods, and our environment.
Therefore, it is important to protect the bees and their habitats, and to raise awareness about their role and value.
One way to appreciate and support the bees is to learn how to identify them and observe their behavior. You might be surprised by the diversity and beauty of the bees that visit your backyard, garden, or balcony.
1. Why are pollinators important?A.They help the bees fertilize. | B.They keep the crops diverse. |
C.They support the bees to make honey. | D.They protect insects such as wasps. |
A.How pollination works. | B.How the flowers attract bees. |
C.How the bees reproduce. | D.How the plants produce fruits. |
A.Climate change. | B.Pesticide use. |
C.Pollinators’ survival crisis. | D.Bees’ habitat loss. |
A.A duty: Protect Bees’ Habitat | B.A Means: Observe Bees’ Behaviour |
C.Bees: Maintainers of the Ecosystem | D.Bees: Consumers at the Top of the Food Chain |
1. 活动目的;
2. 活动内容。
注意:
1. 写作词数应为80左右;
2. 请按如下格式作答。
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5 . We Need to Think about Conservation on a Different Timescale
Time, perceived by humans in days, months, and years, contrasts with nature’s grander scales of centuries and millennia, referred to as “deep time.” While paleontologists (古生物学者) are trained to think in deep time, conservationists are realizing the challenges it poses. Shortsightedness about time limits modern conservation, with efforts often overlooking past healthy conditions of ecosystems in the context of climate and biodiversity crises.
The shifting baseline syndrome (综合症), where standards in a place change gradually, makes conservation more complex. It involves evaluating ecosystems primarily on their recent past, often with negative consequences.
Recent shifts in California’s forest management practices, from stopping fires to embracing Indigenous knowledge of controlled burns, exemplify the importance of understanding historical ecosystem dynamics. To enhance conservation, adopting a deep-time approach is crucial.
Modern mathematical modeling, combined with long-term data, offers a pathway for preserving ecosystems. In California’s kelp (海带、海藻) forest, researchers identified an overlooked keystone species — the extinct Seller’s Sea Cow (大海牛). By examining past kelp forests, a deeper story impacting regeneration was revealed. The sea cow, a massive plant-cater, contributed to a diverse, vital undergrowth by trimming kelp and letting light reach the area.
The researchers put forward a novel approach to kelp forest restoration: selectively harvesting kelp, imitating the sea cow’s impact. This strategy, considering historical dynamics, challenges assumptions about recent ecosystems and offers new conservation methods.
Rather than only focusing on removing urchins (海胆) or reintroducing sea otters, the researchers suggest employing teams of humans to selectively harvest kelp, as the Steller’s sea cow once did, to encourage fresh growth. This sustainable harvest could benefit both the ecosystem and human consumption.
In short, assumptions based on the recent past may impede the understanding and protection of ecosystems. On the other hand, the application of controlled burns, similar modeling studies, and a deep-time perspective (视角) could significantly transform conservation efforts. Recognizing our role in an ongoing narrative spanning millions of years is essential, urging a comprehensive understanding of ecosystems through time. Embracing this role is crucial for shaping the future and establishing vital connections from the past to the future.
1. What is the “shifting baseline syndrome,” mentioned in the passage?A.A syndrome that affects human beings’ perception of time. |
B.A phenomenon where ecological standards shift in a place. |
C.A psychological disorder common among conservationists. |
D.A condition where ecosystems change gradually over time. |
A.It promotes the prevention of wildfires. | B.It aids in mathematical modeling efforts. |
C.It helps reveal historical ecosystem dynamics. | D.It enhances human consumption of ecosystems. |
A.Reform. | B.Disrupt. | C.Quicken. | D.Deepen. |
A.Shifting baseline syndrome has positive ecological changes. |
B.Mathematical modeling with the latest data can be effective. |
C.Deep-time perspective and historical dynamics are crucial. |
D.Recent history is more preferred in ecosystem restoration. |
6 . US forests could become a “substantial carbon source” by 2070, suggesting that forests could worsen global warming instead of easing it, a new Agriculture Department report says.
US forests currently absorb 11 percent of US carbon emissions (释放), equal to the combined emissions from 40 coal power plants. The report predicts that the ability of forests to absorb carbon will start declining after 2025 and that forests could emit up to 100 million metric tons of carbon a year as their emissions from decaying (腐烂) trees go beyond their carbon absorption.
The prediction suggests that this will require the US to cut emissions more rapidly to reach net zero, according to Lynn Riley, a senior manager of climate science. “Eleven percent of our domestic emissions. That is a really significant portion,” Riley said. “As we work to decarbonize... forests are one of the greatest tools available. If we were to lose that, it means the US will contribute that much more” in emissions. The report also assesses and predicts the extent of renewable resources provided by the nation’s forests and undeveloped landscapes, including farmlands, wetlands and grasslands.
According to the report, the loss of carbon absorption is driven in part by natural disasters which are increasing in frequency and strength as global temperatures rise. Development in forested areas, which the report predicts will continue to increase, is having the same effect as people increasingly move to the so-called wildland urban areas. Aging forests also contribute as older, mature trees absorb less carbon than younger trees of the same species, and the US forests are rapidly aging.
More aggressive forest management can help by cutting down a small portion of aging forests to make ways for younger trees that absorb more carbon. A thorough study of each forest should be done before removing older trees, Riley said.
1. Why could US forests become a “substantial carbon source”?A.They fail to absorb enough carbon. | B.They begin to emit carbon increasingly. |
C.They may emit more carbon than absorb. | D.Mature trees outnumber young trees. |
A.US forests have lost their role in carbon absorption. |
B.It is urgent for the US to reduce carbon emissions. |
C.The US has contributed to 11% carbon emissions. |
D.The loss of forests contributes to less carbon emissions. |
A.Improper tree species. | B.Removal of aging trees. |
C.Decreasing urban development. | D.Frequent severe natural disasters. |
A.Aging Forests —a Major Emitter of Carbon. |
B.Growing Forests —a Solution to Carbon Emissions. |
C.Reducing Forests —a Threat to Global Warming. |
D.Decaying Forests —a Consequence of Global Warming. |
7 . 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
Fast-forward to today, Xu, a Beijing native, has
Each day, he spends several hours diving deep under the waves to observe and
For Xu, who had been studying Peking Opera since childhood, becoming a coral conservationist was an
“The coral organism is quite sensitive to its environment and has extremely high
A.accident | B.encounter | C.application | D.performance |
A.moved | B.driven | C.appealed | D.signaled |
A.educator | B.ambassador | C.artist | D.conservationist |
A.approve | B.increase | C.document | D.smooth |
A.separated | B.relieved | C.preserved | D.fascinated |
A.actively | B.finally | C.universally | D.skillfully |
A.teach | B.arrange | C.encourage | D.force |
A.impractical | B.unexpected | C.unfortunate | D.unacceptable |
A.frequent | B.expand | C.manage | D.improve |
A.selling | B.observing | C.farming | D.decorating |
A.answered for | B.brought in | C.searched for | D.gave out |
A.requirements | B.reputations | C.periods | D.priorities |
A.pure | B.good | C.confusing | D.strict |
A.evidence | B.care | C.equipment | D.knowledge |
A.map | B.home | C.platform | D.container |
8 . Across the world, humans purchase around 1.3 billion single-use plastic water bottles a day. Because only about 9% of plastic is recycled, the vast majority of those bottles wind up in landfills, the ocean, or elsewhere in nature.
When beach-loving Madison noticed those plastic bottles during her family’s trips to California, the 12-year-old “just felt like this needed to change,” she told Smithsonian Magazine.
So as she began thinking about what to do for her school science fair back in 2021, the idea of a project centered on reducing plastic pollution quickly came to her mind: she would design an eatable water bottle called the Eco-Hero.
“One of my biggest ambitions for my project was wanting to help the world,” the confident young inventor said in a video on the website.
To bring her idea to life, Madison built upon the already established method by experimenting with common food materials. She also took inspiration from previous versions of eatable water bottles, though she focused on making hers bigger and more durable. She found that the combination of water, lemon juice, natural gum, and Alginic acid (褐藻酸) resulted in a gel pouch that wouldn’t break, could hold up to 3/4 cup of water, and would last in the fridge for three weeks.
Though she’d like to improve the Eco-Hero by making it able to hold more water, she believes her current version would work well as a replacement for the paper cups used by runners in races. All one needs to do is bite a hole in the water ball, drink the water, and then eat the pouch or throw it away to biodegrade.
Madison hopes the Eco-Hero inspires others to take better care of the planet. “It doesn’t necessarily have to be in a big way,” she told Smithsonian. “People can still make a difference in the world, even if it’s just in a small way.”
1. What inspired Madison’s design of an eatable water bottle?A.Her school’s task. | B.Her family’s urge. |
C.Her love for nature. | D.Her trips to the beach. |
A.It is a copy of the previous versions. |
B.It is made from unbreakable materials. |
C.It is an improvement in size and durability. |
D.It has a hole and should be disposed once used. |
A.Ambitious and creative. | B.Talented and determined. |
C.Courageous and confident. | D.Cooperative and committed. |
A.A good beginning is half done. | B.Small people make big moves. |
C.Where there is a will, there is a way. | D.God helps those who help themselves. |
9 . Vast lands of America are dominated by corn, nearly 100macres of it, stretching from Ohio to the Dakotas. What once was forest today produces the corn that feeds people, cattle and, when made into ethanol (乙醇), cars.
Now, the nation’s airlines want to power their planes with corn, too. United Airlines signed a deal with a Nebraska ethanol company to buy enough sustainable fuel, to power 50,000 flights a year. The government could decide on its tax incentives (税收激励) for the industry as soon as December. “Mark my words, the next 20 years, corn farmers are going to provide 95% of all the sustainable airline fuel,” President Biden said in July.
The airlines’ ambitious goal would likely require nearly doubling ethanol production, which airlines say, with great expectation, would decrease their greenhouse gas emissions. If they succeed, it could transform America’s Corn Belt, stimulating farmers and ethanol producers, but potentially further damaging one of the nation’s most important resources: groundwater.
Corn requires a lot of water to grow and it can take hundreds of gallons to produce a single gallon of ethanol. But as airlines take the idea of ethanol, the vital groundwater faces serious risks. “We’re on track to massively increase water usage without any real sense of how sensitive our groundwater is,” said Jeffrey Broberg, who is concerned about groundwater in Minnesota, a major corn state.
The Department of Energy said in a statement that “water use is a critical part of the conversation surrounding bio-energy sustainability”. It pointed to a 2022 department study that concluded that the United States could significantly reduce pressure on groundwater by shifting fuel production away from water-intensive crops like corn, instead growing more crops that don’t require irrigation (灌溉), like various types of straw, grasses and trees. Hopefully, a better approach will be soon studied and adopted.
1. What can we learn from the first two paragraphs?A.Farmers will increase 95% of their ethanol production. |
B.The sustainable fuel will not be popular in the future. |
C.Corn will be an influential source in the fuel industry. |
D.The government stops the new fuel for the groundwater. |
A.Preventing. | B.Motivating. | C.Destroying. | D.Impressing. |
A.The shortage of corn production. |
B.The increase in global warming. |
C.A rise in clean-energy tax credits. |
D.Higher stress on the groundwater. |
A.Expand the corn planting area. |
B.Use some alternative materials. |
C.Cut down the daily water usage. |
D.Turn to the government for help. |
10 . Concrete has served as the foundation stone of the construction industry for hundreds of years. However, the process of producing concrete is one of the most environmentally unfriendly processes in the world. In the process, not only is carbon dioxide (二氧化碳) released into the air by the energy used to heat the limestone, but the limestone itself also gives out a huge amount of the element.
Luckily, a number of start-ups throughout the world are using creative thinking to make the construction industry a whole lot more friendly for the planet.
A Canadian company called CarbonCure, has found a way to inject (注入) concrete with carbon dioxide itself. Not only does this trap the carbon dioxide into the concrete, keeping it from running away into the atmosphere, but it also creates a super strong material called calcium carbonate, which reduces the total amount of concrete that needs to be used.
California-based Brimstone, is creating carbon-negative concrete by doing away with limestone entirely and instead using silicate rock, a material that does not release carbon dioxide when heated. Instead, the process produces magnesium (镁) , which absorbs carbon dioxide, as the basis for their concrete.
Additionally, researchers at Australia’s RMIT University have recently released a study showing that adding coffee grounds instead of sand to concrete could make it much stronger, reducing both the amount of sand used, as well as the amount of concrete that would need to be used in the final product.
The biggest barrier at this point is convincing members of the industry that the new types of concrete are safe to be used, according to Stacy Smedley, director at a nonprofit focused on decarbonizing construction.
Hopefully these new solutions to the environmental problems of concrete will soon be widely adopted. Given the significant part the construction industry has in releasing carbon dioxide into the atmosphere, great improvements can be made when more environmentally-friendly materials are used.
1. What is the environmental issue associated with traditional concrete production?A.The high demand for energy. | B.The processing of waste materials. |
C.The mass release of carbon dioxide. | D.The use of non-renewable resources. |
A.By using silicate rock as the basis. | B.By putting carbon dioxide into concrete. |
C.By replacing sand with coffee grounds. | D.By absorbing carbon dioxide with magnesium. |
A.Difficulty in making profits. | B.Convincing the public of the convenience. |
C.Lack of funding for research. | D.Removing the industry members’ safety concerns. |
A.To promote an alternative to concrete. | B.To advocate environmental protection. |
C.To introduce new ways to produce concrete. | D.To emphasize the significance of creativity. |