1 . In the rich countries of the West, the electric vehicle revolution is well underway. Climate-conscious consumers drive Teslas or Polestars for reasons of morality and fashion. Poorer countries are also experiencing a wave of electrified trend. In Bangladesh, electric three-wheeler taxis, known as tuk-tuks, are rapidly replacing gas-powered ones on the streets. Such electric vehicles are climate friendly, cost effective, and help reduce air pollution.
Yet a glance under the hood (引擎盖) of these vehicles reveals a poisonous secret: each tuk-tuk runs on five massive lead-acid batteries, containing almost 300 pounds of lead in total. Every year and a half or so, when those batteries need to be replaced and recycled, about 60 pounds of lead leak into the environment. Battery recycling, often at small-scale unregulated factories, is a highly profitable but deadly business.
Lead is dangerous, and any exposure to it is harmful to human health. Lead that has entered the environment hurts people on an extraordinary scale. The numerous ways lead enters air, water, soil, and homes across the developing world — and the enormous damage it does to human health, wealth, and welfare — causes one of the biggest environmental crises in the world yet receives little attention.
The World Bank estimates that lead kills 5. 5 million people per year, which would make it a bigger global killer than AIDS, malaria, diabetes, and road traffic deaths combined. On top of the shocking deaths, the social burden of lead poisoning is extraordinary, as is its contribution to global inequality — our research on the cognitive effects of lead poisoning suggests that it may explain about one-fifth of the educational achievement gap between rich and poor countries.
But unlike many challenges faced by developing countries, lead poisoning is a problem that is fixable with some attention and a relatively modest financial investment. Better monitoring, research, and rules can help protect children all over the world from the dreadful effects of lead poisoning and reduce the massive global costs it brings.
1. How does the author describe the lead problem in paragraph 2?| A．By making a comparison. | B．By analyzing hidden causes. |
| C．By listing convincing numbers. | D．By explaining its working principle. |
| A．Lead enters rich countries in various ways. |
| B．Lead poisoning may make poor societies poorer. |
| C．Exposure to lead doesn’t necessarily harm someone. |
| D．Lead leaking has caused great panic in both countries. |
| A．Fixing these used batteries. | B．Putting certain effort and money. |
| C．Prohibiting the illegal use of lead. | D．Reducing the cost of recycling lead. |
| A．The Impacts of Lead Poisoning on Human Health |
| B．The Outcomes of Using Electric Vehicles |
| C．The Ways to Solve Lead Problem |
| D．The Global Lead Poisoning Crisis |
I was eight years old and wasn’t aware of all the arrangements being made for our journey as a family to London in 1950. My mother was in great pain and wished to visit specialists in London. My father reluctantly had to sell our property in Queensland. The day before we boarded the ship, Father unwillingly said goodbye to his five-year-old cattle dog, Spider, who was loved by us all. Father’s friend Sandy was to be his guardian while we were overseas, as he had been getting to know Spider for many weeks.
Six weeks later, an airletter arrived from Sandy, giving my father the news that Spider had run away just two weeks after we had sailed. Sandy had advertised constantly on ABC and other regional newspapers. Despite many “sightings”, the dog was never found. It seems Spider just kept running and searching for us. As he was cattle dog, my father thought he would shoe or dingo-trapped, because of his appearance. But our family thought that Father held a secrets hope that Spider was still alive.
We sailed back to Australia two years later and re-established our home. My father immediately began his own search for Spider. One cold winter’s Saturday morning eight months after our return, my father had a call from an elderly lady living on her own on the outskirts of the town. As she told my father on the telephone, it was “just glimpses of a dingo-type dog in the shadows” of her disused tennis court. That was enough for my father to interrupt my homework.
We set off in his blue and black Jensen car which he had brought back from England. It was hardly the right vehicle for the rough roads we travelled that day. Five and a half hours later, we found the run-down old property. Sadly, she told my father that the “dingo dog” hadn’t been around for a few days. My father had a strange look in his eye. He put two fingers to his lips and did his special whistle for Spider.
注意：1. 续写词数应为150个左右；
2. 请按如下格式在答题卡的相应位置作答。
Suddenly there was a sound in the bush.
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Once home we had the task of getting all the prickles (刺) off him.
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3 . People have come to understand the enormous impacts-beneficial as well as harmful- plastics have on human lives and the environment. As polymer (聚合物) scientists committed to inventing sustainable solutions for real-world problems, we set out to tackle the issue of plastic waste by rethinking the way polymers are designed so we could make plastics with recyclability built right in.
Everyday items including milk jug, grocery bags, and takeout containers are made from a class of polymers called polyolefins. These plastics are really durable (耐用的) because the chemical bonds in those polymers are extremely stable. In a world set up for disposable (一次性的) items, durability is no longer a design feature but rather a design drawback. Imagine if half the plastics used today were recyclable through twice as many processes as they are now. Also conventional recycling requires careful sorting of all the collected materials, which can be challenging with so many different plastics. For example, separating paper from metal doesn’t require complex technology, but sorting a container from a milk jug of a different polyolefin is difficult to do without the occasional mistake.
In a study published in Science in October 2023, we described a series of polymers with only two building blocks-one soft polymer and one hard polymer-that behave like polyolefins but could be chemically recycled. Connecting two different polymers multiple times until they form a single, long molecule (分子) creates what’s called a multiblock polymer. By changing how much of each polymer type goes into the multiblock polymer, our team produced a wide range of materials with properties that covered all polyolefin types.
Using the same strategy but by adding hydrogen, we could disconnect the polymers back into their building blocks and easily separate them to use again. When we made new polymers out of these recycled plastics, they performed just as well as the original materials even after several rounds of chemical recycling. So we were able to create materials with similar properties of the plastics the world relies on. We believe this work is a step toward more sustainable plastics.
1. What is paragraph 2 mainly about concerning plastics?| A．Their multiple uses. | B．Their chemical properties. |
| C．Their recycling challenges. | D．Their classification criteria. |
| A．mixing building blocks with long molecules |
| B．integrating chemicals into the two polymers |
| C．combining two different multiblock polymers |
| D．adjusting the percentage of the two polymers |
| A．They are made from sustainable materials. |
| B．They can be recycled by adding hydrogen. |
| C．Their reliability outperforms traditional plastics. |
| D．Their properties change with rounds of recycling. |
| A．Designing for Recycling | B．Classifying Plastic Waste |
| C．Replace Plastics with Polymers | D．Technology Creates the Future |
4 . More than 50 million people in Asia, Africa, the Middle East and elsewhere follow pastoralism(游牧) as a way of life. The practice has survived for so long because it is designed to change with the environment. Pastoralists move with animals to find new lands and water, leaving behind eaten plants to regrow.
Mongolia is well known for its pastoralism. Agvaantogtokh and his family are herders(牧民). On horseback, he rides with nearly a thousand sheep and goats to help them find water. Sometimes, he and his wife, Nurmaa, stop to help struggling young ones, weak after a difficult winter.
For families like Agvaantogtokh’s, pastoralism is more than a profession. It is a cultural identity that connects generations. At its heart is the human connection to animals. While they consider the animals as their property, they also see them as living beings working alongside them.
Researchers say herders believe in “animal agency”. Agvaantogtokh lets his animals choose the food they eat and where they find water. To him, restricting an animal’s movement and asking it to eat the same thing each day is like putting a person in prison.
In Mongolia, weather extremes are a part of life. When Agvaantogtokh thinks about climate change, he is concerned about humans and animals. Continuous dry and warm weather affects Mongolia. Since 1940, the government says, average temperatures have risen 2.2 degrees Celsius. To keep their practice alive, pastoralists seek ways to modernize. In Mongolia, Lkhaebum recently began using a small vehicle to more easily search for horses. The family uses electricity and has other technologies including a TV and a washing machine. They also use a cellphone to follow the weather and access social media where herders share information.
One of the biggest threats to pastoralism comes from within. Nurmaa and Agvaantogtokh’s 18-year-old daughter studies medicine. Their son spoke about becoming a herder when he was a child, but not anymore. “I won’t regret anything if my child won’t be a herder,” Nurmaa said. “I would like them to do what they desire to do.”
1. What contributes to the survival of pastoralism?| A．Huge pastoralist populations. | B．Adaptation to the environment. |
| C．Herders’ desire to travel to new places. | D．Slow development of modernization. |
| A．The distinct identity of animals. | B．A poorly-paid profession. |
| C．An out-of-date lifestyle. | D．The bond between man and animals. |
| A．Animals’ living in cages. | B．Animals’ eating the same thing. |
| C．Animals’ struggling in shelters. | D．Animals’ moving around freely. |
| A．Modern technology. | B．No government support. |
| C．Young people’s disinterest in it. | D．Lack of information exchange. |
5 . Sri Nihal Tammana, age 13, of Edison, New Jersey, was named a winner of the 2022 Gloria Barron Prize for Young Heroes. The Barron Prize annually honors 25 outstanding young leaders who have made a significant positive impact on people, their communities, and the environment.
Nihal founded Recycle My Battery to promote and facilitate the recycling of used batteries. His nonprofit places free battery recycling bins(箱子)and educates young people and adults about battery recycling. In just three years he has built a team of more than 250 student volunteers across the globe who have recycled nearly 200,000 batteries and educated millions of people. Nihal learned at age 10 that 15 billion batteries are thrown away each year and that most end up in landfills(垃圾填埋地)where they pollute groundwater, harm the ecosystem, and can cause catastrophic fires. Inspired to tackle the problem, he began collecting used batteries from his community. He put them in free recycling bins at stores like Staples until he was told he was bringing too many and had to stop.
Undeterred, he reached out for help from Call2Recycle, the largest battery recycling nonprofit in North America. Call2Recycle agreed to assist and provided recycling bins for free, which were placed in schools, libraries, and other public places. Nihal’s organization now operates across the U.S. and is expanding to other countries including Canada, Switzerland, and India. “Earth gives us so much — oxygen, food, water — everything! So it’s important that we give something back when we can,” says Nihal.
The Barron Prize was founded in 2001 by author T. A. Barron. “Nothing is more inspiring than stories about heroic people who have truly made a difference to the world,” says T. A. Barron. “And we need our heroes today more than ever. Not celebrities, but heroes — people whose character can inspire us all. That is the purpose of the Barron Prize: to shine the spotlight on these amazing young people so that their stories will inspire others.”
1. What does Recycle My Battery intend to do?| A．Protect the earth from used batteries. | B．Promote used batteries across the globe. |
| C．Make money by collecting used batteries. | D．Stop people throwing used batteries away. |
| A．Undiscouraged. | B．Unprepared. | C．Unsurprised. | D．Uninterested. |
| A．By making it go global. | B．By offering free recycling bins. |
| C．By providing financial support. | D．By buying more used batteries. |
| A．The importance of recycling batteries. |
| B．The impact of batteries on the environment. |
| C．The achievements of the Barron Prize winners. |
| D．The inspiring story of a young environmentalist. |
6 . Sri Nihal Tammana, age 13, of Edison, New Jersey, was named a winner of the 2022 Gloria Barron Prize for Young Heroes. The Barron Prize annually honors 25 outstanding young leaders who have made a significant positive impact on people, their communities, and the environment.
Nihal founded Recycle My Battery to promote and facilitate the recycling of used batteries. His nonprofit places free battery recycling bins(箱子)and educates young people and adults about battery recycling. In just three years he has built a team of more than 250 student volunteers across the globe who have recycled nearly 200,000 batteries and educated millions of people. Nihal learned at age 10 that 15 billion batteries are thrown away each year and that most end up in landfills(垃圾填埋地)where they pollute groundwater, harm the ecosystem, and can cause catastrophic fires. Inspired to tackle the problem, he began collecting used batteries from his community. He put them in free recycling bins at stores like Staples until he was told he was bringing too many and had to stop.
Undeterred, he reached out for help from Call2Recycle, the largest battery recycling nonprofit in North America. Call2Recycle agreed to assist and provided recycling bins for free, which were placed in schools, libraries, and other public places. Nihal’s organization now operates across the U.S. and is expanding to other countries including Canada, Switzerland, and India. “Earth gives us so much — oxygen, food, water — everything! So it’s important that we give something back when we can,” says Nihal.
The Barron Prize was founded in 2001 by author T. A. Barron. “Nothing is more inspiring than stories about heroic people who have truly made a difference to the world,” says T. A. Barron. “And we need our heroes today more than ever. Not celebrities, but heroes — people whose character can inspire us all. That is the purpose of the Barron Prize: to shine the spotlight on these amazing young people so that their stories will inspire others.”
1. What does Recycle My Battery intend to do?| A．Protect the earth from used batteries. | B．Promote used batteries across the globe. |
| C．Make money by collecting used batteries. | D．Stop people throwing used batteries away. |
| A．Undiscouraged. | B．Unprepared. | C．Unsurprised. | D．Uninterested. |
| A．By making it go global. | B．By offering free recycling bins. |
| C．By providing financial support. | D．By buying more used batteries. |
| A．The importance of recycling batteries. |
| B．The impact of batteries on the environment. |
| C．The achievements of the Barron Prize winners. |
| D．The inspiring story of a young environmentalist. |
Puppies that mainly eat dog food are more likely to have problems with their gut (下消化道) health in later life compared with those
Anna Hielm-Björkman at
The researchers surveyed each dog owner multiple times in this period and also asked them whether their dog
The team wanted to determine the effect that a dog’s diet at an early age had
The researchers found that 22 per cent of dogs developed CE in adulthood,
Their diet as a puppy, aged between 2 months and 6 months,
8 . A new form of real estate(不动产)is appearing along the beaches of South Africa and on the dry islands off its coast-tiny white beach huts. With good ventilation and a sea view, they are just big enough to fit a family of African penguins. Their unique selling point: a safe and cool place for penguins to breed.
African penguins, unlike their relatives that live in snow and ice, live well in the cold currents of the South Atlantic Ocean. But when they come to land, their thick black coat absorbs the heat, and they desperately look for cover-both for themselves and their fragile eggs.
Historically, the penguins dug burrows in layers of guano-accumulated seabird and bat feces- that lined Africa’s penguin colonies, but in the 19th century, traders started selling guano(鸟粪)as fertilizer, leaving the penguins and their eggs increasingly exposed to predators and the baking sun. This, combined with other threats such as egg poaching, overfishing and climate change, has caused African penguin populations to plummet. In 2019, they were thought to be less than 20,000 breeding pairs, down from an estimated 1.5 to 3 million birds in 1900.For more than a decade, the species has been listed as endangered by the IUCN.
To date, the African Penguin Nest Project has installed more than 1,500 nests across five of South Africa’s penguin colonies, and plans to expand into Namibia next year, the only other country with breeding populations of the species.
“This is still just a drop in the bucket,” says Graham, who anticipates they will need to deploy at least 4,500 more ceramic homes to protect penguins currently nesting in exposed areas. “The goal is that every penguin that needs a nest will get one.”
1. What is the reason for building the beach huts?| A．To beautify the beach. | B．To conduct research. |
| C．To house the penguins. | D．To balance the ecology. |
| A．Four. | B．Five. | C．Six. | D．Seven. |
| A．Innovate. | B．Increase. | C．Swing. | D．Decline. |
| A．Culture. | B．Environment. | C．Technology. | D．Art. |
9 . A wild African bird that will lead people to trees with honeycomb (蜂巢) seems to somehow learn the distinct whistles and calls of the human foragers (觅食者) who live near them.
This bird species has far more information about what the bees are doing than humans ever could. In Tanzania, Hadza foragers can use a special whistle to attract this bird, which will then fly down and start leading them to honey. With its noisy chattering sound, the bird is very conspicuous. Once the bird arrives at a tree with honey inside, it will rest near the beehive silently, seemingly not to disturb the bees. “That’s the signal to the Hadza to really start searching,” says Brian Wood, an anthropologist at University of California, Los Angeles. Pretty soon, the foragers will locate the hive and cut open the tree trunk.
It is found that the birds are more likely to show up when the familiar signal used by the locals is being broadcast. According to the research, the birds appear 82% of the time when Hadza whistles are being played. But they appear only 24% of the time when the researchers play the whistles traditionally used in a different country.
This makes it clear that the birds have learned what their human neighbors do when they want to partner up and go honey-hunting. “This is a very strong result which supports the idea that there’s a learning process involved,” says Wood.
But how do the birds learn? It’s still unclear. What is clear is that this human-animal communication seems to benefit both parties, and it may go back many thousands of years. When the honeycomb is out, the birds get some of the beeswax, which they love to eat. And the human foragers get the honey—which is an enormously important food for the Hadza. Wood has calculated that the Hadza get about 10% of the calories in their annual diet with the help of the birds.
1. What does the underlined word “conspicuous” in Para.2mean?| A．Eye-catching. | B．Care-free. | C．Naughty. | D．Attractive. |
| A．They are raised by humans. | B．They help cut open the tree trunk. |
| C．They feed on honey as their annual diet. | D．They can distinguish different whistles. |
| A．A complex dilemma. | B．An unfair trade. |
| C．A double-edged sword. | D．A win-win cooperation. |
| A．The familiar signal in the forest. |
| B．A talented expert in hunting the bees. |
| C．A wonderful guide to collecting honey. |
| D．The human-animal communication in Tanzania. |
10 . 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. |
