1 . A Michigan farmer Bristle was digging with a backhoe (反铲挖土机) in one of his wheat fields when — bang — it struck a large bone.
Bristle contacted Fisher, a paleontology (古生物学家) professor at the University of Michigan. Fisher rushed to the farm and identified the bone as a fossil of an Ice Age mammoth (猛犸象). Since it was harvest season, Bristle gave Fisher and his students only one day to remove the rest of the fossils from the ground. The team found 20 percent of the animal’s bones, including its skull, tusks, pelvis, and shoulder blades as well as some teeth, ribs, and other bones.
The age of a mammoth can be determined by counting the rings in one of its tusks. Like the rings in a tree trunk, each ring stands for one year of a mammoth’s life. Fisher thinks that the bones are supposed to belong to male mammoth around forty years old. It was probably a rare hybrid of a woolly mammoth and a Colombian mammoth that lived between 11,700 and 15,000 years ago during the Pleistocene lee Age, when ice sheets covered much of Earth’s land.
The bones appeared to have been cut up and some of them were missing, leading Fisher to conclude that early humans must have killed the animal and stored its meat so they could return to it at a later time. Some other indications of human activity include a stone flake (薄片) that might have been from a cutting tool and the arrangement of the neck bones in order. If the mammoth had died naturally, its bones would have scattered randomly.
In the US, fossils found on private property belong to the owner of the land. However, Bristle donated the fossils to the University of Michigan for further study. Fisher hopes to display the bones at the University of Michigan Museum of Natural History, possibly combined with fiberglass models of bones from other Michigan mammoths to form a complete Mammoth skeleton (骨架).
1. Why was Fisher’s time limited to one day?| A．Because the mammoth was a small one. | B．Because it was easy to remove the bones. |
| C．Because it was the time of gathering crops. | D．Because Bristle was busy planting in the field. |
| A．By counting the bones. | B．By judging the living age. |
| C．By measuring the ice sheets. | D．By numbering the tusk rings. |
| A．How the mammoth died. | B．Where the missing meat was. |
| C．How the stone flake was made. | D．Whether the neck bones scattered. |
| A．To own the fossils. | B．To study the mammoth. |
| C．To complete the skeleton. | D．To promote the university. |
2 . About 12% of the total global energy demand comes from heating and cooling homes and businesses. A new study suggests that using underground water to maintain comfortable temperatures could reduce consumption of natural gas and electricity in this section by 40% in the US. The approach is called ATES, short for aquifer thermal energy storage (含水层热能储存).
“We need storage to absorb energy from the sun and wind. It’s crucial to creating affordable, reliable, and deeply environmental-friendly electricity systems. Most people are interested in batteries and other kinds of electrical storage. But we were wondering whether there was any opportunity to use geothermal (地热的) energy storage,” said first author A.T.D Perera. “With ATES, energy can be stored for a long period of time, without adding an additional burden to the grid (输电网).”
ATES is a pleasantly simple concept that takes advantage of the heat-absorbing property of water and the natural geological features of the planet. You simply pull existing underground water up and heat it at the surface in the summer with environmental heat or energy. Then you send it back down. It stays fairly hot because the Earth is a good insulator (绝热体).
“Unlike above-ground tank-based water or ice storage systems, ATES will not need space. It’s also more efficient and can support larger communities in cooling or heating than traditional geothermal heat pump systems that rely on heat moving with the underground soil,” added co-author Hong Tianzhen.
A major beneft of ATES is that it will become more efficient as weather becomes more extreme in the coming years due to climate change. The hotter summers and severer winters could increase the amount of free thermal energy that can be stored with ATES. “It’s very much a realistic thing to do and this work is really about showing its value,” said Perera. “This technology is ready to go, so to speak. We just need to do it.”
1. What do we know about ATES?| A．It is technologically demanding. |
| B．It is aimed at replacing natural energy. |
| C．It mainly relies on batteries to function. |
| D．It helps achieve an environmentally friendly society |
| A．By giving examples. | B．By discussing results. |
| C．By making comparisons. | D．By analyzing principles. |
| A．Temperature variations. | B．Insulated materials. |
| C．The duration of storage. | D．The category of energy. |
| A．A Turning Point in Energy Usage |
| B．A Solution to Green Cooling and Heating |
| C．A Transformation in the US Electricity System |
| D．A Discovery About Geothermal Energy Storage |
3 . Personality has been described in all sorts of animal species. Some are shy while others are active. Now a new study suggests experts can reliably measure animal personality simply from the way animals move, and that the method could be used to help scientists and mathematicians from Swansea University and the University of Essex filmed the movements of 15 three-spined stickleback fish (三刺鱼) swimming in a tank which contained two ,three or five plastic plants in fixed positions. Using the high-resolution tracking data from video recordings, the team measured how long and how often the fish turned, and how long they stopped and started moving.
The data showed that each fish’s movements were very different, and that these differences were highly repeatable—so mush so that the researchers could identify a fish just from its movement data.
Dr Ines Furthbauerm, a co-author of the study from Swansea University, said, “These personalities in fish are like signatures—different and unique to an individual. We found the fish’s signatures were the same when we made simple changes to the fish tanks, such as adding additional plants. However, it is possible that these signatures change gradually over an animal’s lifetime, or suddenly if an animal meets something new or unexpected in its environment. Tracking animals’ movements over longer periods and in the wild will give us this sort of insight and help us better understand not only personality but also how flexible an animal’s behavior is.”
Dr Andrew King, lead author from Swansea University, said, “The research is significant because it suggest we might be able to quantify personality differences in wild animals.
1. What did the research team do to the fish?| A．They kept measuring their sizes. | B．They fed them with real plants. |
| C．They recorded their movements. | D．They put them in different tanks. |
| A．They remained relatively stable. | B．They changed easily accordingly. |
| C．They proved difficult to detect. | D．They were the same as others’. |
| A．Positive. | B．Disapproving. |
| C．Conservative. | D．Unclear. |
| A．Personality Determines Movements. | B．How Animals Move Seems Similar. |
| C．Personality Is Not a Secret. | D．Animals’ Movements Tell Personality. |
4 . Thanks to the 1999 Environment Protection and Biodiversity Conservation Act, 26 endangered species in Australia have seen their populations recover.
It seems like that we're always hearing about new animals that have become endangered, but there's some good news in Australia: 26 animal species no longer meet the criteria to be listed as threatened. Australia’s biodiversity has been in decline, with more than 1, 700 species and ecological communities known to be on the line. In 1999, the Environment Protection and Biodiversity Conservation (EPBC) Act was passed to introduce protections for endangered animals. The burrowing bettong is one of 26 Australian species that have returned from the edge of extinction.
Seemingly these are working, as a recent study published in the journal Biological Conservation reviewed the animals that were previously or currently listed as threatened between 2000 and December 2022, and discovered that 26 species had recovered to no longer meet the criteria. Species that have seen improvement include the charmingly named burrowing bettong, the golden bandicoot and the bulloo grey grasswren.
Factors behind this improvement include habitat management, control of introduced predators (捕食者) and translocation of endangered animals to predator-free islands. However, the species have not been officially delisted at this time. The EPBC Act only allows species to be delisted if doing so will not have a negative effect on their survival, and researchers believe that conservation gains could be lost should management efforts be stopped.
Dr Michelle Ward, a conservation scientist at WWF Australia, told The Guardian, “The key problem with delisting species is that then they no longer have monitoring and no longer need certain funding plans.”
However, it is promising that researchers have found signs of improvement. Hopefully this will continue among these and other species!
1. What do the underlined words “on the line” in paragraph 2 probably mean?| A．Out of place. | B．At risk. |
| C．Under control. | D．On the increase. |
| A．Some animals are facing extinction. |
| B．Burrowing bettong is a charming species. |
| C．The criteria to be delisted were hard to meet. |
| D．26 endangered species’ populations are recovering. |
| A．their living situation is severe | B．the delisting consequences are uncertain |
| C．the conservation gains are short | D．the habitat management level is poor |
| A．Unconcerned. | B．Doubtful. | C．Positive. | D．Worried. |
5 . Space X has launched the third test flight of its Starship spacecraft, the largest and most powerful rocket, ever built, which aims to carry astronauts to the moon and, eventually, to Mars. The 120-metre system, which weights about 5,000 tonnes when fully fuelled, took off from Space X’s spaceport, named Starbase, on the Gulf of Mexico in Boca Chica, Texas. It entered space several minutes later and the six Raptor engines powered it to its expected orbit.
Two previous attempts ended in the explosion of both the spacecraft’s 33-engine booster, nicknamed Super Heavy, and the cruise vessel, which is designed to eventually carry up to 100 astronauts. Stacked together, they stand at 10 metres taller than the Saturn V rocket that sent humans to the moon in 1969.
Space X is much more tolerant of risk than Nasa and has a flight-testing strategy that aims to frequently push its spacecraft prototypes to the limit, and, beyond. Its first Starship launch attempt lasted four minutes and, the second lasted eight, with the latter reaching space. The company says frequent flight testing will provide valuable data that will help it design and, develop a more robust rocket.
“Each of these flight tests continue to be just that: a test,” Space X said in a statement before the third launch attempt, in an apparent attempt to manage expectations in case the system exploded. “They aren’t occurring in a lab or on a test stand, but are putting flight hardware in a flight environment to maximize learning.”
The third flight aimed to conduct the first ever re-light of Space X’s signature Raptor engine while in space, open a payload door, and make a controlled re-entry of Starship in the Indian Ocean. Both the upper and lower segments of Starship are designed to eventually power themselves safely back to Earth for a soft landing so that they can be reused, which will be significantly cheaper than building entirely new parts for each mission.
Elon Musk, Space X’s billionaire founder, hopes Starship will be the first step on a human journey further into space that ever before. To do this, Musk intends to begin the colonization of Mars so that humanity can survive a planet-destroying event on Earth. Several other Starship systems are already in production for future tests. The company has announced longer term plans to use the spacecraft as a shuttle for commercial travel on Earth, promising trips from London to Tokyo in less than an hour.
1. What set the third test flight apart from the other two?| A．Being the first to make a controlled re-entry of Starship. |
| B．Being significantly cheaper than the other launches. |
| C．Being the first ever to enter the expected orbit. |
| D．Being the first starship spacecraft to enter the space. |
| A．Space X’s first Starship launch attempt lasts eight minutes. |
| B．Both Space X and Nasa have a flight-testing strategy. |
| C．Space X’s first Starship travels farther than the second. |
| D．Space X will make the best of the frequent flight-testing data. |
| A．To manage expectations in case the system exploded. |
| B．To maximize learning in a flight environment. |
| C．To push its spacecraft prototypes to the limit, and beyond. |
| D．To protect the earth from being destroyed by disasters. |
| A．Space X will make Starship power itself back to Earth safely. |
| B．Space X will adjust the starship system and commercial travel. |
| C．Space X has launched the third test flight of its Starship spacecraft. |
| D．Elon Musk aims to carry astronauts to the moon and then to Mars. |
6 . For generations, Nafisa Bayniyazova and her family have made a living growing melons, pumpkins and tomatoes on farms around the Aral Sea. Bayniyazova, 50, has spent most of her life near Muynak, in northwestern Uzbekistan, tending the land. Farm life was sometimes difficult but generally reliable and productive.
Now, Bayniyazova and other residents say they’re facing a disaster they can’t beat: climate change, which is speeding up the decades-long disappearance of the Aral, once the lifeblood for the thousands living around it.
Decades ago, deep blue and filled with fish, the Aral was one of the world’s largest inland bodies of water. Thousands of migrants from across Asia and Europe moved to the Aral’s shores for jobs popping up everywhere from canning factories to luxury vacation resorts. Today, the few remaining towns sit quiet along the former seabed of the Aral—technically classified as a lake, due to its lack of a direct outlet to the ocean, though residents and officials call it a sea.
Much of its early disappearance is due to human engineering and agricultural projects gone wrong, now paired with climate change. Summers are hotter and longer; winters, shorter and bitterly cold.
Without the moderating influence of a large body of water to regulate the climate, dust storms began to blow through towns. Strong winds caused dunes (沙丘) to swallow entire towns, and abandoned buildings were filled with sand. A dozen fish species went extinct, and businesses closed down. “The fish factories closed, the ships were stuck in the harbor, and the workers all left,” said Madi Zhasekenov, former director of the Aral Sea Fisherman Museum in Aralsk, Kazakhstan. “It became only us locals.”
On her Uzbekistan farm, Bayniyazova’s family has dug an earthen well, hoping to hold on to the precious little water that’s left. “If there is no water, it will be very difficult for people to live,” Bayniyazova said. “Now people are barely surviving.” She doesn’t plan to leave her farm but yet knows more hardships are likely ahead.
1. How is paragraph 3 developed?| A．By reasoning. | B．By making comparison. |
| C．By experimenting. | D．By analyzing data. |
| A．The number of fish in the Aral Sea is increasing. |
| B．Madi Zhasekenov feels hopeful about his future. |
| C．Local people around the Aral have lost their livelihoods. |
| D．Madi Zhasekenov has adapted to the changing climate. |
| A．Ashamed. | B．Worried. | C．Relieved. | D．Embarrassed. |
| A．The Importance of the Aral Sea |
| B．How to Deal With the Aral Sea Disaster |
| C．We Will Face the Challenge of Adapting to Climate Change |
| D．Climate Change Is Quickening the Disappearance of the Aral Sea |
7 . Historical accounts often described the now-extinct California grizzly bears as huge beasts ready to attack humans and livestock at any time. But according to a new paper, scientists say the truth might have been less dramatic: The bears ate a mostly vegetarian diet and were smaller than previously described. California grizzly bears once roamed in the Golden State. But European settlers often hunted, poisoned and trapped the creatures. Over time, because of these human activities, the California grizzly population declined. The last reliable sighting of a California grizzly bear occurred 100 years ago in 1924, and the animals disappeared completely sometime after that.
Researchers wanted to get a better understanding of the factors that accelerated the bears’ extinction. They also hoped to gain more insight into the creatures’ behavior, size and diet. To do so, they turned to documents and California grizzly specimens in natural history collections. They measured the animals’ skulls and teeth and analyzed their bones and pelts. The researchers found that California grizzly bears were much smaller than the 2,000 pounds often reported at the time. Historical accounts might not necessarily have been wrong, but they might have only included the largest bears. In addition, analyses of the animals’ bones and skins suggest the bears were primarily eating plants, which stands in contrast to their fear some hyper carnivorous (超级食肉的) reputation. “The bears likely increased meat consumption due to landscape changes coupled with the arrival of livestock,” says study co-author Alexis Mychajliw. However, researchers found the animals still ate a majority vegetarian diet and killed far less livestock than historical accounts suggested.
By digging beyond the bears’ reputation, the researchers gained a more accurate understanding of the California grizzly’s biology and natural history. And since scientists and land managers often rely on historical accounts when reintroducing animals to their former habitats, the study serves as a reminder that those old newspapers and journals do not tell the whole story.
1. What does the underlined word “roamed” in paragraph 1 mean?| A．Disappeared. | B．Declined. | C．Fought. | D．Wandered. |
| A．They mainly fed on livestock. |
| B．Their diet consisted mostly of plants. |
| C．They ate a balanced diet of plants and meat. |
| D．The absence of livestock changed their dietary habit. |
| A．They are unique. | B．They are one-sided. |
| C．They are accurate. | D．They are comprehensive. |
| A．The natural habitats of California grizzly bears. |
| B．The extinction process of California grizzly bears. |
| C．The reveal of the truth of California grizzly bears. |
| D．The significance of the arrival of California grizzly bears. |
8 . Ten years ago, environmental journalist Ben Goldfarb was on a reporting trip about wildlife conservation. When he was shown around some new animal crossing structures near, Missoula, these new bridges and tunnels intrigued him. He was attracted by these beautiful human-built structures and inspired to write a book. Crossings: How Road Ecology Is Shaping the Future of Our Planet has now been published.
Through expert interviews, in-depth research and convincing analysis, Goldfarh brings to life the deadly consequences our 40 million miles of roadways have had and are having on the natural world and the creatures that inhabit it. A million animals are killed by cars each day in the US alone. Road salt pollutes lakes and rivers. And there's the barrier effect-the steady stream of traffic that prevents animals from migrating（迁徙）all together and finding habitats. Goldfarb writes that noise pollution is the most worrisome among all the road's ecological disasters. Both the engine noise and the tire noise greatly impact ecological environment.
Figures on deaths and disruptions (扰乱) are disheartening, but Goldfarb vividly describes how scientists are actively working on meaningful improvements to help animals and roads better coexist, such as wildlife crossings, from passages in Canada's Banff National Park to the famous Liberty Canyon Overpass in Los, Angeles. Another example is that in India, they built a new highway through a tiger reserve so that animals can come and go underneath the lifted freeway. Of course, that made the project more expensive, but it's ecologically the right thing to do.
Crossings is a truly important and landmark book on a subject whose full impacts continue to be disregarded or underestimated in considering conservation efforts. The book is a sympathetic, heart-warming guide to exploring the issues of wildlife survival and our own.
1. What does the underlined word “intrigued” in paragraph 1 mean?| A．Confused. | B．Blocked. | C．Satisfied. | D．Interested. |
| A．Road salt. | B．Roadkill. |
| C．Vehicle noises. | D．Endless traffic stream. |
| A．To bring shame on individual drivers. |
| B．To stress the effect of roads on wildlife. |
| C．To show humans' effort in animal protection. |
| D．To explain the necessity of creating wild reserves. |
| A．Vivid and touching. |
| B．Pessimistic and sharp. |
| C．Objective and critical. |
| D．Abstract and humorous. |
9 . Shop Sustainably
If you have to name one thing that contributes most to your ecological footprints, you may say the energy you use at home, or your car’s emissions.
●
●Avoid unnecessary packing. Buy loose fruit and vegetables instead of pre-packaged produce, and avoid products that contain multiple single packages or double packaging, like grain in a box and a bag. Consider switching from tea bags and coffee pods to tea leaves and ground coffee.
●Go organic when you can. In addition to the benefit organic farming has to insect biodiversity, it’s also considered more sustainable and better for the environment.
●Buy seasonal and native products.
| A．Take reusable grocery bags. |
| B．Select single-use plastic bags. |
| C．It supports local farmers and food producers. |
| D．You can also refill your own containers with loose-packed food. |
| E．When buying organic products, look for those officially certified. |
| F．But it’s what we eat that accounts for up to 60% of our personal demand. |
| G．You’ll find it convenient whenever you buy tea or coffee in the supermarket. |
10 . Finally, in March of 1703, the Adventure set sail for India. The winds were good until we got near Madagascar, an island off the east coast of Africa. Then a strong wind began to blow. We were trapped in the wind for twenty days. After many hours, the wind finally stopped and the sea became quieter. The storm had blown the Adventure hundreds of kilometers to the east.
“Where are we?” I asked the captain.
“I can’t tell for sure.” He said, “we are running out of water. We must reach land soon to fill our water barrels (桶).” Many days passed and we saw nothing but the sea. One morning, before everyone died of thirst, a sailor cried out, “Land!” Everyone on the ship was silent for a second. And quickly the ship sailed closer to the land. The sailors suddenly became turnultuous and all cheered.
“You men,” said the captain to the sailors, “take the rowboats and go. Fill the water barrels with fresh water.”
“Captain,” I said, “may I go with them to take a look at this place?”
“Of course,” he replied. “You can tell me later what it is like.”
When the rowboats reached the coast, one of the sailors said, “we will have to walk along the coast to look for fresh water.”
“I’m going to take a little walk,” I told them. “I will meet you back here in an hour.”
I walked about a kilometer, enjoying being on land again. Then I turned and walked back to meet the sailors.
When I arrived on the beach, the sailors were not there. They were in the rowboats, rowing as fast as they could toward the Adventure. I was going to shout out to them when I saw a very huge man walking through the sea. I was trying to catch up with the rowboats. The sailors were almost at the ship, and I could see that the huge man would not be able to catch them. Instead, it was coming towards me. Great fear went through my mind.
1. What happened when they got near the east coast of Africa?| A．They decided to set sail for India. | B．The captain lost his sense of direction. |
| C．A storm came and blew the ship heavily. | D．The captain couldn’t tell where they were. |
| A．sad | B．excited | C．bored | D．relaxed |
| A．Because he planned to help get fresh water for everyone. |
| B．Because he got tired of travelling and decided to live on the land. |
| C．Because he wanted to take a walk and look around. |
| D．Because he was looking for the huge man on the land. |
| A．The writer saw the sailors were caught by the huge man. |
| B．The sailors failed to get on the ship because it was too far away |
| C．The writer tried to run away as fast as possible. |
| D．The huge man caught the captain and controlled the ship. |
