1 . Conservation organization Plantlife is urging people to put away their lawnmowers (除草机) for a month and let wild flowers grow instead, as part of its No Mow May project.
Leaving the grass uncut will create a habitat that will benefit bees and other insects, the organization says. Plantlife says lawns could be biodiversity hot-spots if left alone. It says those who participated in its campaign last year reported the growth of more than 250 plant species on their lawns. Among these were wild strawberry and wild garlic. There were also sightings of declining species like green-winged orchids.
One gardener who has been enjoying a more relaxed approach is Tom Jennings, 45, from Buckinghamshire. He says it’s a chance to reconnect with the natural world. “Those fascinated by neat gardens use not only lawnmowers but chemicals.” says Tom.
After letting his back garden grow out, Tom witnessed an explosion of wild flowers—important for pollinators (授粉者) such as bees. Tom says he’s been shocked at how quickly insects have returned to his back garden: an encouraging signal given the global decline of insect populations.
According to Colette Webb, 42, who lives in West Sussex, there are added benefits to letting nature gradually take its course in the garden. “It saves you a bit of time and arguments with the husband about getting the lawnmower out—something my husband hates doing,” she says. “There’s a part of me that thinks the garden is really messy, but when you sit there for some time a day and look at what’s it’s supporting, you realize it’s for the benefit of nature.”
But not everyone is on board with the idea, says David. One of his neighbours is pursuing their own re-wilding project in their own garden—but the other is yet to be convinced. “And my mother, who’s 81, still says it looks untidy,” he laughs.
1. What is the major goal of Plantlife’s No Mow May project?A.Helping promote biodiversity. | B.Attracting more garden visitors. |
C.Making their gardens look more natural. | D.Saving people’s trouble of mowing their gardens. |
A.He is crazy about neat gardens. |
B.He hates having to cut the grass regularly. |
C.He believes the project is increasing the number of insects. |
D.He benefited a lot from the decline of insects in his garden. |
A.She gets on better with her husband. | B.Her husband has come to enjoy gardening. |
C.Her garden is no longer as messy as it used to be. | D.She has formed the habit of sitting in the garden. |
A.Shows concern about. | B.Makes response to. | C.Agrees with. | D.Comes up with. |
Nature’s Lungs
We know that trees are nature’s purifier (净化器): They absorb carbon emissions (碳排放)and release oxygen. But their
According to the study, there are
This may sound like a lot,
Yet, planting trees is still considered the most effective way
3 . The earth is struck daily by 60 tons of rocks from outer space. However, finding these ancient rocks is no easy task. Most meteorites (陨石) fall directly into water. And those that hit land can be difficult to spot among other rocks.
Fortunately for researchers there is one place on Earth where meteorites find it difficult to hide: Antarctica. “There are probably fewer meteorites falling per acre of land in Antarctica than in other parts of the world,” said Ralph Harvey, a professor at Case Western Reserve University. “But if you want to find things that fell from the sky, lay out a big white sheet. And Antarctica is a 5,000-kilometer-wide sheet.”
Finding meteorites in Antarctica is so relatively “easy” compared to the rest of the world that an estimated two-thirds (around 45,000) of those ever discovered have come from the icy continent. The challenge, however, comes not only from the terrible conditions, but also from knowing where to look to make any expedition worthwhile.
In an effort to greatly improve the collection rate of Antarctic meteorites, a Belgian—Dutch team of scientists has unveiled (展示) what they’re calling a “treasure map” for the region. “We expect the treasure map to be 80% accurate,” said Veronica Tollenaar, who led the study.
After landing in the snow in Antarctica, a meteorite will either be directed into the ocean or brought back to the surface of what’s known as a “blue ice” area. As meteorites come out in these special “blue ice” areas, their color contrasts (对比) against the deep blue ice, making them easy to spot. The treasure map marks more than 600 special “blue ice” areas. They estimate that these sites may contain anywhere from 340,000 to 900,000 surface meteorites.
The researchers add that these locations also likely contain rare meteorites, such as angrites, brachinites or even Martian meteorites.
“Collecting these ancient rocks will further improve the understanding of our Solar System,” they write.
1. What makes it relatively easy to spot meteorites on Antarctica?A.Few people visit the Antarctica. |
B.Antarctica is covered with snow. |
C.More meteorites fall in Antarctica. |
D.Meteorites stay still in Antarctica. |
A.Antarctic is too far to arrive. |
B.Meteorites’ location is hard to track. |
C.The expedition to Antarctic is too expensive. |
D.The snow in Antarctic covers most of the meteorites. |
A.More and more meteorites found in Antarctica |
B.Challenges of spotting meteorites in Antarctica |
C.Improving our understanding of the Solar System |
D.Treasure map helping spot meteorites in Antarctica |
A.Science. | B.Business. | C.Environment. | D.Education. |
4 . As AI becomes popular, researchers have noticed its influence on the environment. Training an AI system requires huge computing power and electricity, and the resulting CO2 emissions (排放) are one way AI affects the environment. But its environmental effect is more than its carbon (碳)footprint.
Jesse Dodge, a scientist at the Allen Institute, says, "The influence of Al systems is going to be from their applications, not the cost of training them." David Rolnick, a computer scientist at McGill University, compares AI to a hammer (锤子) “The main effect of a hammer is what is being hammered,” he says, "not what is in the hammer." Just like a hammer which can either destroy things or build a house, Al can hurt or help the environment.
In 2019, ExxonMobil, an oil company, said it would use Microsoft’s app Azure. With the Al technology, it would increase its production and create billions of dollars. This means Microsoft's AI is directly contributing to greenhouse gas emissions. This is not the only AI application that could be environmentally harmful. AI behind the ads that jump out on Instagram or Facebook pages pushes customers to spend more on products like clothes. This in turn causes more emissions through more production and delivery.
But on the other side of the coin, there are AI applications that can help deal with environmental problems, such as the destruction caused by hurricanes. One such application is xView2, a program started by a U. S. organization. It can recognize buildings damaged and people trapped in natural disasters, reducing danger and saving time for rescuers.
AI could be a valuable tool in the fight against climate change—if the Al industry can reduce its harmful climate effects. "Both AI and climate rules have roles to play." Rolnick says. When creating Al rules, he suggests considering its applications, emissions, and other production costs. Further, Dodge adds that those AI professionals should help set up some value systems to limit the technology's use.
1. Where does the effect of AI systems on the environment come from according to Dodge?A.The popularity of AI. | B.The emissions of CO2. |
C.The way of applying AI. | D.The cost of AI training. |
A.By listing numbers. | B.By giving examples. |
C.By comparing facts. | D.By explaining details. |
A.Rules for AI can be helpful. | B.Al's advance should be limited. |
C.Production costs will be lower. | D.AI plays a role in making rules. |
A.AI applications are environmentally harmful. |
B.AI affects the environment by CO2 emissions. |
C.AI is effective in solving environmental problems. |
D.AI's environmental effect goes beyond its emissions. |
1. 选择环保的交通方式;
2. 爱护旅游景点;
3. 自带水,少买包装饮料。
注意:1. 词数100左右;
2. 可以适当增加细节,以使行文连贯;
3. 开头语已为你写好,不计入总词数。
Good afternoon, my fellow students. I am Li Hua, host of Voice of the Campus today.
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Li Hua
6 . On a recent sunny day, 13,000 chickens roam over Larry Brown’s 40 windswept acres in Shiner, Texas. Some rest in the shade of a parked car. Others drink water with the cows. This all seems random, but it’s by design, part of what the $6.1 billion U.S. egg industry bets will be its next big thing: climate-friendly eggs.
These eggs, which are making their debut now on shelves for as much as $8 a dozen, are still labeled organic and animal-friendly, but they’re also from birds that live on farms using regenerative agriculture — special techniques to cultivate rich soils that can trap greenhouse gases. Such eggs could be marketed as helping to fight climate change.
“I’m excited about our progress,” says Brown, who harvests eggs for Denver-based NestFresh Eggs and is adding more cover crops that draw worms and crickets for the chickens to eat. The birds’ waste then fertilizes fields. Such improvements “allow our hens to forage for high-quality natural feed that will be good for the land, the hens, and the eggs that we supply to our customers.”
The egg industry’s push is the first major test of whether animal products from regenerative farms can become the next premium offering. In barely more than a decade, organic eggs went from being dismissed as a niche product in natural foods stores to being sold at Walmart. More recently there were similar doubts about probiotics and plant-based meats, but both have exploded into major supermarket categories. If the sustainable-egg rollout is successful, it could open the floodgates for regenerative beef, broccoli, and beyond.
Regenerative products could be a hard sell, because the concept is tough to define quickly, says Julie Stanton, associate professor of agricultural economics at Pennsylvania State University Brandywine. Such farming also brings minimal, if any, improvement to the food products (though some producers say their eggs have more protein).
The industry is betting that the same consumers paying more for premium attributes such as free-range, non-GMO, and pasture-raised eggs will embrace sustainability. Surveys show that younger generations are more concerned about climate change, and some of the success of plant- based meat can be chalked up to shoppers wanting to signal their desire to protect the environment. Young adults “really care about the planet,” says John Brunnquell, president of Egg Innovations. “They are absolutely altering the food chain beyond what I think even they understand what they’re doing.”
1. The climate friendly eggs are produced ______.A.at a considerably low cost | B.at the demand of regular shoppers |
C.as a replacement for organic eggs | D.on specially designed farms |
A.reducing the damage of worms | B.accelerating the disposal of waste |
C.creating a sustainable system | D.attracting customers to his products |
A.are desperate to change their diet | B.are likely to buy climate-friendly eggs |
C.are enthusiastic about new food | D.are amazed at environmental problems |
A.market prospects | B.nutritional value |
C.standard definition | D.moral implications |
A. voyaged B. barely C. renowned D. abnormality E. discipline F. navigable G. unprecedented H. eyed I. Fortunately J. accessible K. degradation |
For voyager and green promoter Zhai Mo, the 504-day non-stop voyage to the Arctic Ocean has stimulated his concern about the climate and awareness of his responsibilities.
Navigating more than 28,000 nautical miles (51,856 kilometers) in harsh conditions, Zhai, a (n)
Zhai undertook this task as an ambassador of the Chinese navigation science and marine public welfare, and also the ForNature Campaign of the United Nations Development Program. He set sail on June 30 last year to raise public awareness of global warming, climate change and land
“When we passed through the Northwest Pacific Ocean on our way back, we encountered three typhoons within a week, which
Zhai didn’t see any floating ice during his one-week voyage in the Kara Sea while the previous meteorological data showed ice there.
“My own experience tells me that climate
The voyage, to enter the Arctic Ocean from the Bering Strait before making a round trip returning to Shanghai, was planned to take four months, but the return schedule was delayed for more than a year. “As soon as we entered the Bering Strait, we encountered a polar cyclone. A large number of ice floes and icebergs were blown to the coast. However, the Arctic Ocean can only be
Zhai was attracted by sailing when holding an art exhibition abroad in 2000. In 2007, he got a second-hand sailboat with simple supplies, such as instant noodles, pancakes and potatoes, and started his voyage trip around the world.
After that 35,000-nautical-mile voyage, Zhai
He adds that he hopes more young people would participate in navigation, to promote and publicize the ocean awareness and navigation spirit. He is preparing for the third voyage trip around the world next year or the year after that. “Antarctica is also a very big challenge. I hope to explore more unknowns, and I also want to launch a transoceanic sailing competition.”
A.Bring flowers. | B.Take a pot plant. |
C.Buy postcards. | D.Send fruits. |
Last week I visited a small village to see the brown bears, what come to the villages at night to look at food. I waited with some tourist. As it grew dark, we see the huge black shapes of the bears. Those clever bears knew where to go for its dinner: the rubbish where there was lots of food people have thrown away. Although it’s wonderful to see the bears in the village, but it can only mean one thing: their habitat is disappearing. They would prefer to stay hiding in the mountain forests, but the trees have cut down for firewood. However, they cannot find enough food any more.
10 . Masses of ocean plastic are providing artificial habitat (栖息地) for otherwise coastal species, according to a new study published in Nature Communications. The study’s authors observed floating water bottles, old toothbrushes and waste fishing nets. The possibility exists that species may be evolving to better adapt to life on plastic.
A decade ago, marine researchers believed coastal species could not survive a trip across the inhospitable open ocean. Yet Japan’s 2011 tsunami (海啸), which sent some 300 species of Asian marine life riding floating plastic garbage onto North American shores, disproved that assumption.
Ocean plastic is “creating opportunities for coastal species’ biogeography to greatly expand beyond what we previously thought was possible”, Linsey Haram, a researcher and co-author of the study, said in a report.
The concept of species-covered plastic may sound like the story of ocean species’ victory in spite of human pollution. But that’s not quite the case, explains Juan José Alava, PhD, an expert at the University of British Columbia. In addition to transporting non-native species to new habitats where they may become invasive and destructive, the plastic is “basically an ecological trap”, says Alava. “That’s because small species on the floating structure may attract bigger animals to come for food. When these creatures enter garbage areas for food, they run a high risk of eating and/or becoming caught in plastic and dying.”
While scientists have found some types of bacteria (细菌) are able to break down plastic, thereby cleaning up garbage, it’s unlikely that the marine animals will have any such effect. “The 2021 UN report was clear that the increasing plastic pollution is putting the health of all the world’s oceans and seas at risk,” says Alava.
1. What does the underlined word “inhospitable” in Paragraph 2 mean?A.Easy-to-spot. | B.Up-to-standard. |
C.Down-to-earth. | D.Hard-to-stay. |
A.Putting them at greater risk. |
B.Causing them to grow bigger. |
C.Enabling them to live in new habitats. |
D.Freeing them from getting endangered. |
A.It increases some creatures’ curiosity. |
B.It causes damage to all marine species. |
C.It creates habitats for larger creatures. |
D.It leads to the death of some creatures. |
A.Ocean plastic must be dealt with. |
B.It’s OK to throw plastic into the ocean. |
C.Marine life may adapt to ocean plastic. |
D.Ocean plastic may be cleaned up soon. |