1 . Tropical (热带的) forests could become so hot that some kinds of leaves will no longer be able to conduct photosynthesis (光 合 作用), according to a study. The photosynthetic machinery in tropical trees begins to fail at about 46.7℃ on average. The research suggests that forests may be nearing dangerous temperature sooner than expected. Models predict that once we hit a global temperature increase of 3.9℃, these forests might experience mass leaf damage.
Chris Doughty, an associate professor at Northern Arizona University and the lead researcher of the study, said the leaf-warming experiments had revealed a nonlinear rise in temperatures. “We were really surprised that when we warmed leaves by 2, 3 or 4℃, the highest leaf temperatures actually increased by 8℃. This shows a concerning nonlinear feedback that we were not expecting.” said Doughty. “If we adopt a do-nothing response to climate change and tropical forest air temperatures increase by greater than 4℃, there could be massive leaf death.” he added.
Avoiding high emissions (排放) in the first place is key to stabilizing temperatures. “We should do all we can to avoid high-emissions. Under low-emissions, almost all tropical forest tree leaves can avoid death from overheating and the trees will survive,” said Simon Lewis, a professor of global change science at University College London. “Yet what the study doesn’t look at is heatwaves. We still might see tree deaths from overheating for limited periods during heatwaves under lower emissions.”
Researchers suggest that the damage is not yet unchanged. “Vote for people who are serious about addressing climate change and transferring to low-carbon economies, ”Disney, one researcher, advocated. More generally, we can all recognize the importance of supporting those countries and people who live in and rely on tropical forests economically, But the serious changes to tropical forests don’t just affect the local people it’s a global issue.
1. Which of the following can best replace the underlined word “nonlinear” in Paragraph 2?| A．Global. | B．Dramatic. | C．Steady. | D．Minor. |
| A．Planting more trees. | B．Exploring heatwaves. |
| C．Conducting researches. | D．Pursuing low emissions. |
| A．Promoting global efforts. |
| B．Seeking economic support. |
| C．Helping tropical countries. |
| D．Boosting low-carbon education. |
| A．Global warming harms trees. |
| B．Tropical forests lose functions. |
| C．Tropical leaves struggle in heat. |
| D．Forests near dangerous temperature. |
2 . Most people would be terrified of entering waters with crocodiles (鳄鱼), but not Sao Chan. Like others living in a jungle village, the 73-year-old farmer says the Siamese crocodiles found in the waterways may look ferocious, but they should not be treated with prejudice. “If we come close to them, they just run away,” Chan says.
He’s right. There have been extremely few reported attacks by Siamese crocodiles on humans in the world, and reportedly none anywhere in Cambodia. Instead, it’s the crocodiles that have every reason to fear people. Once common throughout Southeast Asia, the particularly shy Siamese crocodile, which can grow up to 10 feet long, was for decades hunted for its skin and meat to such an extent that, in the early 1990s, the species was thought to be extinct in the wild.
Some of them survived in the Cardamoms, however, where populations of the reptiles, likely numbering fewer than 200 individuals in total, were rediscovered in 2000. Since then, local people have conducted regular patrols (巡逻) to protect them from threats. While the patrols and other conservation efforts have helped prevent the extinction of the Siamese crocodiles, concerns about the species’ long-term survival have remained because population numbers have stayed largely flat since their rediscovery.
In 2022, conservationists have introduced more Siamese crocodiles into the wild than ever before, not just in the Cardamoms but for the first time into a wildlife reserve in the northern part of the country, where the crocodiles historically were found. Advances in genetic testing have identified crocodiles suitable for release, and satellite tracking of reintroduced crocodiles has improved protection efforts.
“We have a long way to go, but the potential comeback of the Siamese crocodile could be Cambodia’s most successful conservation story,” says Pablo Sinovas, who leads a nonprofit reintroducing the animals. “Its survival isn’t just an ecological necessity, but a symbolic matter of urgency if we have any hope of preserving nature on Earth.”
1. What does the underlined word “ferocious” in Paragraph 1 mean?| A．Violent. | B．Friendly. | C．Ugly. | D．Abnormal. |
| A．Habitat loss. | B．Water pollution. |
| C．Human activities. | D．Poor adaptability. |
| A．They are regularly disturbed by tourists |
| B．Their quantity isn’t increased as expected. |
| C．The locals lack awareness of protecting them |
| D．They fail to adjust to unfamiliar surroundings |
| A．Frequent patrols. | B．Modern technology. |
| C．Economic advances. | D．Genetic transformation. |
3 . Fountains of lava erupted from the Sundhnúkur volcanic system in southwest Iceland on January 14th, 2024. Lava flows welled up from a new gap, attacking the suburbs of Grindavík with at least three houses in their path burnt down. Nearby, construction vehicles that had been working for weeks to build large earthen dams in an attempt to divert(使转向)the lava’s flow had to pull back.
Lava is subject to gravity like other fluids, so it will flow down along a path of steepest descent(斜坡). With the temperature of its molten rock often well above 1,000 degrees Celsius, not much can stand in its way. Humans have tried many ways to stop lava in the past, from attempting to freeze it in place by cooling it with sea water, to using explosive s to cut off its supply. However, no attempt was successful.
Most recent efforts have focused instead on building dams in an attempt to divert the lava’s flow toward a different path of steepest descent, into a different “lavashed,” where lava would naturally flow. Results have been mixed, but diversion can be successful if the lava flow can be clearly diverted into a distinct area where lava would naturally flow — without threatening a different community in the process. Many attempts to divert lava have failed, however. Barriers built in Italy to stop Mt. Etna’s lava flows in 1992 slowed the flow, but the lava eventually over topped each one.
Diverting lava in Grindavík is difficult, in part because the land around Grindavík is relatively flat, making it harder to identify a clear alternative path of steepest descent for redirecting the lava. Icelandic officials reported on January 15th that most of the lava from the main fissure had flowed along the outside the barrier, however a new gap had also opened inside the perimeter(外围), sending lava into a neighborhood. Unfortunately, that implies that Grindavík remains at risk.
1. What do we know about the lava erupting from the Sundhnúkur volcanic system?| A．It severely affected the downtown area of Grindavík. |
| B．It forced the construction of large earthen dams to suspend. |
| C．It was successfully redirected by the earthen barriers. |
| D．It completely buried a residential area. |
| A．Five. | B．Four. | C．Three. | D．Two. |
| A．the lava has destroyed many buildings |
| B．there is no suitable dam to divert the lava |
| C．the land around Grindavík is relatively flat |
| D．the lava has already entered a populated area |
| A．How earthen barrier functions. |
| B．What can be done to prevent lava. |
| C．Why volcanic lava is so hard to stop. |
| D．What lava has brought about in Iceland. |
Live video provided by the plant operator Tokyo Electric Power Company (TEPCO) showed that
Under scorching heat, hundreds of Japanese from all across the country
front of the TEPCO headquarters in
Taeko Fujimura with Japan's National Federation of Agricultural Cooperative Associations, also known as Zen-Noh,said the ocean discharge "cannot be forgiven" and was "
5 . Between 20 and 40 per cent of planet Earth is covered in grasslands, across every continent except for Antarctica. Grass is a low-growing, flowering plant with groups of narrow leaves growing from its base. Strong roots typically hold this plant’s leaves firmly to the ground.
One of the most common sights along stretches of grass is grass-eating animals. This is because many large animals rely on extensive grasslands to survive, and grass grows well with this regular trimming (修剪). The plants gain their energy from sunlight and require healthy cells to do so. If the leaves aren’t cut, the tips die and start to rot. When they are damaged with a clean cut, however, the cells are caused to grow quicker and produce new, healthy tissue. This is also why cutting your garden’s grassland regularly can make your grass look thicker and healthier.
Humans rely on grass for food, too. Many grasses, such as w heat or corn, are harvested as a main part of some diets. Meanwhile, grass is used indirectly to produce food in the form of livestock (牲畜). Cattle farmers require grass in their fields to feed cows and sheep before they are turned into meat for human consumption.
One of the most debated questions is how long ago grass evolved. Because grass doesn’t preserve well as a fossil, a definitive answer is hard to come by. Until recently, many scientists estimated that grass began to grow on Earth between 50 and 65 million years ago.
However, within the last decade, a piece of 100-million-year-old amber (琥珀) was found that appeared to contain the oldest grass fossil to date. Studies of fossilized dinosaur faces (粪便) also suggest that some dinosaurs lived at the same time that grass grew on the planet, incorporating it into their diets.
1. What is the function of the roots mentioned in Paragraph 1?| A．To fix the leaves to the soil. | B．To store water and nutrients. |
| C．To support the growth of the plant. | D．To protect the plant from animals. |
| A．By improving soil quality. | B．By encouraging cell growth. |
| C．By preventing the tips from dying. | D．By attracting more animals to eat them. |
| A．Grass doesn’t preserve well as a fossil. | B．There are no fossils of grass available. |
| C．There is no solid evidence of its evolution. | D．Scientists can’t agree on its origin. |
| A．The Variety of Grass | B．The Development of Grass |
| C．How Grass Change Life | D．How to Make Grass Grow Well |
6 . In 2014, an art student from university went to Beijing Zoo. Little did he know that a chance encounter with corals (珊瑚) there would start a lifelong passion. Until today, Xu Yitang, a Beijing native, has settled in Hainan province, where he serves as a coral conservationist. For Xu, who had been studying Peking Opera since childhood, becoming a coral conservationist was an unexpected turn of events.
After he first saw corals at the zoo, he began to frequent the local market to learn about coral farming from sellers of coral products. He also learned diving and underwater photography to get a closer look at corals for research purposes. Each day, he spends several hours diving deep under the waves to observe and document the growth and development of the creatures and shares photos and videos of corals on social media platforms. His goal was to raise awareness and knowledge about corals, so that people can learn how to protect them effectively.
As he studied deeper into the creature, he learned that corals are known as “underwater gardens” of the ocean, providing a home for a quarter of all ocean life. Unfortunately, with the strengthening of the greenhouse effect, rising sea temperatures have led to coral bleaching (白化). Xu felt an increasing sense of urgency and responsibility to protect them.
While pursuing his passion to protect corals, he met his life partner, Liu Xiwen, through their shared hobby of diving in Hainan. “Unlike many young people who care about their dress and appearance, he is simply focused on protecting corals,” says Liu about Xu.“Despite his skin injury from spending long hours in the seawater, his attitude is different from what I’ve seen in most young people in Beijing, and it’s attractive to me.”
1. What can we learn about Xu Yitang from the first paragraph?| A．He majored in coral protection. |
| B．He was born in Hainan province. |
| C．He worked in Beijing as a coral expert. |
| D．He found his love for corals by chance. |
| A．To record his exploring process. |
| B．To spread knowledge about corals. |
| C．To introduce his diving experience. |
| D．To show off his photography ability. |
| A．The pollution of ocean environment. |
| B．The development of ocean farming. |
| C．The damage to underwater gardens. |
| D．The increase in ocean temperatures. |
| A．Emotional. | B．Devoted. |
| C．Public-spirited. | D．Curiosity-driven. |
As I stepped out of the cat and onto the unfamiliar driveway of my father’s home in Ontario, Canada. I couldn’t help but feel upset. My mother had just passed away in a car accident and now I was being forced to live with a father I barely knew.
My father was a metal sculpture artist, and I was not sure if I would ever fit into his world. Soon, I found comfort in exploring the nearby wilderness. Yet I couldn’t ignore the sadness and anger that welled up inside me when I saw a construction crew destroying a small wilderness area nearby. That’s when I came across a nest of geese eggs, abandoned and fragile.
Without hesitation, I brought them home. When the first crack appeared and a tiny head poked through, my heart swelled with purpose and affection. As they grew, the baby geese followed me everywhere. Father smiled and remarked that they surely thought me their mother.
My geese grew steadily but time was not. Father realized without a real mother’s guidance, the geese would never learn how to migrate south for the winter and winter’s arrival could be tough. That’s when my father came up with a daring plan. He was an amateur pilot, and he would teach me how to fly an aircraft. Together, we would lead the geese on their migratory journey. It was a risky plan, but I was willing to do anything to help my feathered friends.
Each day of flight training with Father, I felt myself gaining confidence m the skies. Yet with the journey approaching, more and more fear filled me. Crossing the border into the US and flying hundreds of miles to the reservation in North Carolina seemed a mission impossible.
Father gave me a supportive smile, his face reflecting a mix of determination and concern. “We’ve trained for this, and we’re a team. Just like you and your geese,” he said, placing a hand on my shoulder.
注意：
1. 续写词数应为150左右；
2请按如下格式在答题卡的相应位置作答。
Flying south, we started the migration, followed by my geese.
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I said goodbye to Father in the hospital and continued the flight.
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8 . Do you know how much India struggles to gather the waste plastic water bottles? According to a Central Pollution Control Board (CPCB) report from 2012, India generates 15, 000 tonnes of plastics a day, of which the gathered ones only achieve 60%. The trashed-but-not-gathered plastic waste leads to land and water pollution. posing serious threat to the environment.
After seeing that, Ankur Chawla, a drink expert, undertook research to find a solution, after which he realised the biggest problem the country faced was disposing of plastic waste. To address it, he wanted to come up with a solution where they do not add to the problem of waste. Fortunately, Ankur was not alone. He met Bhrigu Seth who was into green farming. Both of them found that they shared a common goal and it didn’t take long for them to draft a plan of action. It is estimated that over 90 percent of aluminium(铝) drink cans in India are recycled. Instead, 70 percent of the cans are manufactured through recycled waste. After going through challenges at hand, the pair made up their minds.
Before taking the next step. both co-founders visited five-star hotels and took samples of water in aluminium cans, asking them whether they would give it a shot if something like that comes in the market. The pair received an overwhelmingly positive response. They then determined to launch Responsible Whatr, natural spring water drink packed in an aluminium can to solve the problem of waste plastic water bottles.
As one of India’s first natural spring water drink, Responsible Whatr offered an environmentally friendly and endlessly recyclable aluminium can. It’s a non-alcoholic drink that was launched with a vision for an eco-friendly future and an agenda to reduce single-use plastic pollution.
Going forward, Ankur and Bhrigu aim to cooperate with airports and ecommerce gates which would help them in directly reaching the homes of high networth individuals (HNIs). They also plan to tie up with corporate firms and cinema halls and join hands with NGOs that are fighting for the conservation of beaches and oceans.
1. What inspired Ankur to conduct his research?| A．Plastics remained the major bottle material. |
| B．Uncollected plastics caused severe pollution. |
| C．Plastics accounted for most of the daily waste. |
| D．The amount of plastic waste was beyond control. |
| A．Creating a new packaging design. | B．Developing an alternative to plastics. |
| C．Launching a rubbish sorting program. | D．Increasing the recycling of plastic cans. |
| A．Removing plastic pollution. | B．Promoting aluminium cans. |
| C．Advertising non-alcoholic drinks. | D．Advocating a sustainable approach. |
| A．By cooperating with NHIs. | B．By introducing new products. |
| C．By targeting profitable NGOs. | D．By establishing diverse channels. |
It was Christmas Eve morning, and I a woke with a mission: to find my lost cat, Baby-Girl. The icy rain was beating against the windows. I said a prayer for Baby-Girl. It had been six months since she’d gone missing, but I still had faith. It was the season for miracles, after all!
That summer, my sweet cat disappeared from my parents’ house. She had been staying with them while I was between apartments. I lived and worked in Washington DC then. Baby-Girl had got out of my parents’ house three days before I was flew back home to pick her up. Dad and I spent that entire visit searching for her. Dad was the family’s “realist”, meaning he was always trying to prepare me for the worst. “She’s either been hit by a car or been taken in by someone who found her,” he said. Dad always supported me, but he was so uncertain.
Baby-Girl had been a stray cat when I found her. Though I couldn’t explain it, I knew I’d see her again, even after I returned to Washington DC without her and the weeks stretched into months, deep down I had this feeling that we’d be reunited.
Now, home again for the holidays, I was determined to pick up my search. I grabbed Baby-Girl’s cat carrier and loaded it into the car, then asked my dad to drive me to the shelter, hoping I’d find her there. “Sharon, you have to be realistic,” Dad said as we headed to the garage. “She’s been gone too long. You’re not going to find her.” “Well, I just have a feeling,” I said. Dad raised an eyebrow as he climbed into the driver’s seat. “Don’t you believe in Christmas miracles?” I asked. “Bah humbug,” he said. It was his favorite Christmas saying and an inside joke in our family. He even had a shirt with decorations across the front, which he wore every Christmas morning.
注意：
1.续写词数应为150左右；
2.请按如下格式在答题卡的相应位置作答。
At the shelter, the woman at the front desk greeted my dad warmly. “Hi, Mr. Dillon! Still looking for your cat?”
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Back home, the rest of the family welcomed Baby-Girl. Dad remained stubbornly uncertain.
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10 . At ancient sites across the Amazon River basin, mysterious plots of unusually rich soil dot (点缀) the landscape. Scientists have long debated the origin of this “dark earth”, which is darker in color than surrounding soils and richer in carbon. Some people think this dark earth formed naturally, but the latest research has shown that modern Kuikuro people in Brazil create similar soil around their villages on purpose, which adds evidence to the idea that long-ago Amazons deliberately made such soil too. Perron, an earth scientist at MIT, reviewed interviews of Kuikuro people conducted by a Kuikuro filmmaker in 2018 and found that Kuikuro villagers actively make dark earth by using ash, food bits and controlled burns. “When you plant in hilly land, the soil is weak,” explained elder Kanu Kuikuro in one of the interviews. That is why we throw the ash, manioc peelings and manioc pulp. When comparing soil samples from ancient and modern sites, researchers found “striking similarities” — both were far less acidic than surrounding soils and contained higher levels of plant-friendly nutrients.
Analyses also revealed that dark earth holds twice the amount of carbon as surrounding soils on average. Scans (扫描) of the Xingu region suggest that the area is dotted with dark earth, and that hold as much as about 9 million tons of carbon — the annual carbon emissions of a small, industrialized country. “This number could roughly equal the annual carbon emissions of the United States when all dark earth across the Amazon is taken into consideration,” Perron says.
Figuring out the true value of carbon stored in the Amazon’s dark earth will require more data. Still, the research has significant influences on the Amazon’s future. The technique highlights how ancient people were able to live in the Amazon by developing sustainable farming that doubled as a carbon-storing technique. With more and more greenhouse gases entering the atmosphere, it could also provide a blueprint for developing methods of sustainably locking atmospheric carbon in the soil, helping fight climate change.
1. What can we infer from the dark earth across the Amazon River basin?| A．They are more acidic than surrounding soils. |
| B．They contain more organic nutrients. |
| C．They formed naturally. |
| D．They contain less carbon. |
| A．To explain the difficulty of protecting dark earth. |
| B．To show the wide distribution of dark earth in Amazon. |
| C．To stress the huge carbon-storing capability of dark earth. |
| D．To reveal the large carbon emissions of the United States. |
| A．The importance of developing sustainable farming. |
| B．The advanced farming technology in ancient tomes. |
| C．A possible solution to climate change. |
| D．A way of green agriculture. |
| A．Urgency of Sustainable Development | B．Facts About the Dark Earth |
| C．Advantages of the Dark Earth | D．Wisdom of Ancient Amazons |
