1 . New research shows that removing black rhinos’ horns (犀牛角) to make them less attractive to illegal hunters is reducing their territory (领地) sizes and making them less sociable with each other.

The study, published in the journal PNAS, found that de­horned South African rhinos have home ranges that are 45 per cent smaller than those of complete animals, and that they were 37 percent less likely to engage in social interactions.

“The big, dominant bulls that used to have very large territories that overlapped with a lot of females may now have much less territory and much less reproductive (繁殖的) success,” says Vanessa Duthé, who led the work at Switzerland’s University of Neuchâtel.

“It’s really hard to predict the effects of this,” she says. “It doesn’t mean that population success will necessarily decline, because it might open up gaps for younger males that would not have had the space or the means before.” Indeed, a University of Bristol study published last year showed that de­horning (去角) does not negatively affect populations overall.

But such unintended behavioral consequences necessarily feed into judgments about whether this highly invasive procedure is worthwhile. Remarkably, perhaps, there is little hard evidence either way. “No one’s put all the data together to say whether it’s a really effective measure,” says Duthé.

“What is clear is that the introduction of de­horning and a decline in illegal hunting has occurred at the same time,” she adds. “But de­horning has been accompanied by other conservation measures that may be more effective.”

“It’s incredibly complicated,” says Lucy Chimes, a member of the Bristol team. “There are so many other factors involved. You have to consider what other security measures are being carried out — fencing, patrols, staff numbers — and poverty levels surrounding parks, their nearness to national borders and whether there is community engagement.” Chimes is currently planning a project that aims to separate these and other factors. In the meantime, Duthé believes that de­horning is a worthwhile tool of last course of action. “A rhino that is behaving a little bit strangely is better than a dead rhino.”

1. What is the purpose of removing the horns of black rhinos?

A．To make them less sociable.	B．To protect them from being hunted.
C．To reduce their home ranges.	D．To affect their reproductive success.

2. What does the underlined phrase “invasive procedure” in paragraph 5 refer to?

A．The removal of rhino horns.	B．The loss of rhino territories.
C．The impact on rhino population.	D．The change of rhino behavior.

3. What is Chimes’ attitude toward the de­horning of black rhinos?

A．Supportive.

B．Opposed.

C．Unconcerned.

D．Uncertain.

4. What can we learn from the last paragraph?

A．De­horning rhinos shows satisfying effects.

B．Various factors lead to the decline in illegal hunting.

C．De­horning is the last action researchers will take.

D．Rhinos are supposed to behave a little bit strangely.

2 . Any schoolchild knows that a whale breathes through its blowhole. Fewer know that a blowhole is a nostril (鼻孔) slightly changed by evolution into a form more useful for a mammal that spends its life at sea. And only a dedicated expert would know that while toothed whales, such as sperm whales, have one hole, baleen (鲸须) whales, such as humpback and Rice whales, have two.

Even among the baleen whales, the placing of those nostrils differs. In some species they are close together. In others, they are much further apart. In a paper published in Biology Letters Conor Ryan, a marine biologist at the Scottish Association for Marine Science, suggests why that might be. Having two nostrils, he argues, helps whales smell in stereo (立体空间).

Many types of baleen whales eat tiny animals known as zooplankton (浮游动物), which they catch by filtering (过滤) them from seawater using the sheets of fibrous baleen that have replaced teeth in their mouths. But to eat something you first have to find it. Toothed whales do not hunt by scent. In fact, the olfactory bulb—the part of the brain that processes smell—is absent in such creatures. But baleen whales still have olfactory bulbs, which suggests smell remains important. And scent can indeed give zooplankton away. Zooplankton like to eat other tiny creatures called phytoplankton (浮游植物). When these are under attack, they release a special gas called dimethyl sulphide, which in turn attracts baleen whales.

Most animals have stereoscopic senses. Having two eyes, for instance, allows an animal to compare the images from each in order to perceive depth. Having two ears lets them locate the direction from which a sound is coming. Dr Ryan theorized that paired blowholes might bring baleen whales the same sorts of benefits.

The farther apart the sensory organs are, the more information can be extracted by the animal that bears them. The researchers used drones to photograph the nostrils of 143 whales belonging to 14 different species. Sure enough, baleen whales that often eat zooplankton, such as the North Atlantic right whale, have nostrils that are farther apart than do those, such as humpback whales, that eat zooplankton occasionally. Besides allowing them to breathe, it seems that some whales use their blowholes to determine in which direction dinner lies.

1. What do we know about whales’ nostrils according to the first two paragraphs?

A．They are adapted ones.	B．They are developed merely for smell.
C．They are not easy to detect.	D．They are fixed universally in numbers.

2. What plays a role when baleen whales hunt zooplankton?

A．The teeth that baleen whales have.

B．The smell that phytoplankton send.

C．The sound waves that zooplankton create.

D．The chemical signals that zooplankton give off.

3. How is the concept of stereoscopic senses explained in paragraph 4?

A．By quoting a theory.	B．By using examples.
C．By making contrast.	D．By making inferences.

4. What is the position of nostrils related to according to the last paragraph?

A．The sense of smell.	B．The possibility to attract food.
C．The ability to locate food.	D．The ability to communicate.

3 . Tropical cyclones(热带气旋), including hurricanes and typhoons, are now moving at a slower speed than they did decades ago, new research shows.

While having a cyclone travel with less speed may seem like a good thing, it’s actually just the opposite. Wind speeds within the storm remain high, but the whole system itself moves slower, allowing punishing rains to stay longer over communities. “Nothing good comes out of a slowing storm,” says James Kossin, author of the paper. “It can increase the amount of time that buildings suffered from strong wind. And it increases rainfall.”

In his paper, Kossin showed that from 1949 to 2016, tropical cyclones across the globe slowed their movement by 10 percent on average. In some regions (地区), the speed of those storms slowed even more as they hit land. In the western North Pacific, the decrease was much more manifest—almost a third. That means a storm that may already hold more moisture (水分)will have time to drop more of it in each spot.

Kossin’s work was based on details of almost 70 years’ worth of storms, but he didn’t try to determine what was causing the slowdown. Still, the change is exactly what he and other cyclone experts said, which would be expected from climate change. With the polar regions warming faster than other parts of the globe, that is changing the pressure and reducing the winds that push these storms.

Christina Patricola, a scientist, called Kossin’s work important and new and said she found it reliable. “I was not surprised by his findings,” she says. “But I was surprised by the speed of the slowdown.”

Kossin hopes that scientists will begin building models that show which places are likely to face the most risk. Given that storms in some regions are moving towards polar regions and already increasing in intensity(强度), cyclones causing unusually powerful rain may threaten places not normally in their paths. Scientists must take action to make those places suffer less from the disasters.

1. Why is the decrease in cyclones’ speed a bad thing?

A．It leads the cyclones to move faster on the ground.

B．It causes the cyclones to have higher wind speed outside.

C．It makes hard rains and strong wind last longer in one place.

D．It results in more typhoons taking place in some communities.

2. What does the underlined word “manifest” in Paragraph 3 mean?

A．Obvious.

B．Satisfying.

C．Confusing.

D．Impossible.

3. What does Paragraph 4 suggest?

A．Climate change in the polar regions is under control.

B．Scientists find it hard to understand the slower cyclones.

C．Scientists should do further experiments in polar regions.

D．Climate change may be the cause of the slowdown of the cyclones.

4. Why does Kossin want scientists to build models in the last paragraph?

A．To find out the normal paths of serious cyclones.

B．To prove the speed of the cyclones can be controlled.

C．To reduce the damage from cyclones to possible areas.

D．To call on scientists to focus on the danger of climate change.

4 . Manatees — often called sea cows — are an anomaly in the animal kingdom. Neither predator nor prey, these peaceable creatures, which can grow to 13 feet and weigh more than 2,000 pounds, are evolutionarily devoid of aggression. Crystal River — “Manatee Capital of the World” — is the epicenter of their presence and recovery.

Yet despite some gains, manatees still face grave threats. Three-quarters of Florida’s 22 million people live along the coast, many in prime manatee habitat, where the strain of human-presence has degraded the state’s enchanted springs, waterways, and wetlands. In Indian River Lagoon, for example, an important manatee habitat along Florida’s densely populated east coast, decades of human waste, sediment from real estate development, and fertilizers from lawns and farms have clouded the water. That has killed seagrass, manatees’ main food source there. More than a thousand manatees have died in the lagoon during the past two years.

What people don’t understand is the need to help support them in waterways. That means restoring seagrass beds and freshwater aquatic vegetation, the basis of their existence and of the overall health of Florida’s waters. Steps to reverse the damage started small. Neighbors gathered with rakes, scooping up algae by hand. Ironically, it was Save Crystal River — the group environmentalists had opposed during their fight over the manatee’s endangered status — that spearheaded the restoration of aquatic vegetation. With funding from the state government, Save Crystal River hired Sea& Shoreline, an aquatic restoration firm, to remove the waste and replant the river bottom with eelgrass, which grows long, ribbon like leaves.

While the prospect of replanting the entire river was daunting, after vacuuming more than 300 million pounds of detritus and planting some 350,000 individual eelgrass pods by hand, the groups have flipped the river back to an ecosystem no longer dominated by algae.

Instead of spending the few short winter months in Crystal River before heading back out into the Gulf of Mexico to graze, some manatees now linger here year-round, enjoying fat times. Aerial surveys from January 2022 revealed the highest number of manatees ever recorded in these waters — more than a thousand in Kings Bay alone.

1. What is a feature of manatees?

A．They are gentle animals.	B．They feed on small creatures.
C．They are slightly aggressive.	D．They look cute for their shape.

2. What is the main reason for manatees’ decline?

A．Climate change.	B．Habitat loss.
C．Low food supply.	D．Human activities.

3. How did Save Crystal River help improve manatees’ endangered situation?

A．By removing wastes from the river.

B．By raising funds from the government.

C．By replanting algae in the river bottom.

D．By refining manatees’ living surroundings.

4. What can we learn about manatees from the last paragraph?

A．They enjoy the cold winter of Mexico.

B．They remain in Manatee Capital for long.

C．They head towards the warmer waters during winter.

D．They have the largest population ever recorded globally.

5 . On August 15,a team of researchers and conservationists set off on a two-year voyage from Plymouth, England,on board the Dutch tall ship Oosterschelde. They will sail more than 46,000 miles(74,000 kilometers)and drop anchor in 32 different ports across four continents,before ending their journey in Falmouth,U.K.

The expedition, named Darwin200,comes more than 190 years after Charles Darwin sailed the globe collecting specimens and shaping ideas of his theory of evolution. The team will closely follow Darwin’s original voyage aboard the HMS Beagle, which set off on Dec.27,1831,and returned to England on Oct.2,1836.

Darwin was 22 years old when he joined the expedition with the intention of seeing the world before joining the church. But during the trip, Darwin became fascinated by the wide range of different species he encountered, which eventually led to him creating his theory of evolution by natural selection. Darwin’s account of the journey, published after his return, also helped him establish his reputation as one of Victorian Britain’s academic elite.

The main aim of the new expedition is to train and inspire 200 young environmentalists, between 18 and 25 years old, who will each spend a week on board the Oosterschelde studying threatened species that Darwin encountered on his voyage.

“We wanted to create a similarly transformative experience(for the young naturalists),”Stewart MePherson, mission director of Darwin200,said in a statement. They have” the potential to be the STEM (science, technology, engineering, and mathematics)and conservation leaders of tomorrow,” he added.

Every week, the team will broadcast interactive “nature hour” sessions live from the ship for people across the world. They will also collect important data on ocean plastics and coral reef health,as well as survey seabirds, whales and dolphins.

1. What can we learn about Darwin200 from the first two paragraphs?

A．It takes along 200 naturalists.	B．It takes a shortcut for the journey.
C．It is to mark Darwin’s Beagle voyage.	D．It lasts longer than Darwin’s voyage.

2. How did Darwin’s voyage affect him?

A．It established his writing style.	B．He gained a sense of adventure.
C．He earned great fame and fortune	D．It changed the direction of his life.

3. What is Stewart McPherson’s wish for the young naturalists?

A．To be more creative.	B．To keep an open mind.
C．To develop scientific skills.	D．To challenge Darwin’s theory.

4. What does the team’s research work focus on?

A．Ocean conservation.	B．The exploration of ocean.
C．The art of navigation.	D．Scientific education.

6 . 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.     1     Knowing this can make your grocery shops more planet-friendly. Here is what you can do to help shop sustainably.

●    2     Using those is a great first step. If you get some, do remember to fill them with your purchases. When you adapt yourself to reusing them, then you’ll cut your consumption of single-use plastic bags even further.

●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.     3    

●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.     4    Choosing free-range or Marine Stewardship Council-certified products also encourages environment- and animal-friendly food production.

●Buy seasonal and native products.     5     So you can avoid buying goods that have travelled long distances to reach your plate. As well as opting for local goods, depending on where you live, in the supermarket, you can also buy directly from the source at farmers’ markets.

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.

7 . Until recently, gravitational waves could have been the stuff of Einstein’s imagination. Before they were detected, these waves in space time existed only in the physicist’s general theory of relativity, as far as scientists knew. Now, researchers are on the hunt for more ways to detect the waves. “The study of gravitational waves is booming,” says astrophysicist Karan Jani of Vanderbilt University in Nashville. “This is just remarkable. No field I can think of in fundamental physics has seen progress this fast.”

Just as light comes in a variety of wavelengths, so do gravitational waves. Different wave lengths point to different types of origins of the universe and require different kinds of detectors. Gravitational waves with wavelengths of a few thousand kilometers—like those detected by the United States, Italy and Japan—come mostly from pairs of black holes 10 or so times the mass of the sun, or from collisions of dense cosmic blocks called neutron stars (中子星). These detectors could also spot waves from certain types of exploding stars and rapidly moving neutron stars.

In contrast, huge waves that span light-years are thought to be created by orbiting pairs of bigger black holes with masses billions of times that of the sun. In June, scientists reported the first strong evidence of these types of waves by turning the entire galaxy (星系) into a detector, watching how the waves make slight changes to the timing of regular blinks from neutron stars throughout the Milky Way.

Physicists now hope to dive into a vast, cosmic ocean of gravitational waves of all sorts of sizes. These waves could reveal new details about the secret lives of exotic objects such as black holes and unknown parts of the universe.

Physicist Jason Hogan of Stanford University thinks there are still a lot of gaps in the coverage of wavelengths. “But it makes sense to cover all the bases. Who knows what else we may find?” he says. The search for capturing the full complement of the universe’s gravitational waves exactly could take observatories out into the moon, to the atomic area and elsewhere.

1. What does Karan Jani think of the current study on gravitational waves?

A．It is rapid and pioneering.

B．It is slow but steadily increasing.

C．It is interrupted due to limited detectors.

D．It is progressing as fast as any other field.

2. What do the detected gravitational waves mostly indicate?

A．The creation of different kinds of detectors.

B．Collisions of planets outside the solar system.

C．The presence of light in different wavelengths.

D．Activities involving black holes and neutron stars.

3. How did scientists manage to find huge waves’ evidence?

A．By analyzing sunlight.

B．By locating the new galaxy.

C．By using the whole galaxy as a tool.

D．By observing the sun’s regular movement.

4. What can be inferred about the future study according to the last paragraph?

A．It’ll exclude the atomic field.

B．It’ll focus exactly on the mapping of the galaxy.

C．It’ll require prioritizing certain wavelengths on the moon.

D．It’ll explore potential places to detect gravitational waves.

8 . 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.

2. What did the researchers discover about California grizzly bears?

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.

3. What can we learn about historical accounts of animals from the last paragraph?

A．They are unique.	B．They are one-sided.
C．They are accurate.	D．They are comprehensive.

4. What is the text mainly about?

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.

9 . A new study reveals that pigeons (鸽子) can tackle some problems just like artificial intelligence, enabling them to solve difficult tasks that might challenge humans. Previous research has theorized that pigeons employ a problem-solving strategy, involving a trial-and- error approach, which is similar to the approach used in AI models but differs from humans’ reliance on selective attention and rule use. To examine it, Brandon Turner, a psychology professor at the Ohio State University, and his colleagues conducted the new study.

In the study, the pigeons were presented with various visual images, including lines of different widths and angles, and different types of rings. The pigeons had to peck (啄) a button on the right or left to indicate the category to which the image belonged. If they got it correct, they received food; if they were wrong, they received nothing. Results showed that, through trial and error, the pigeons improved their accuracy in categorization tasks, increasing their correct choices from about 55% to 95%.

Researchers believed pigeons used associative learning, which is linking two phenomena with each other. For example, it is easy to understand the link. between “water” and “wet”. “Associative learning is frequently assumed to be far too primitive to. explain complex visual categorization like what we saw the pigeons do,” Turner said. But that’s exactly what the researchers found.

The researchers’ AI model tackled the same tasks using just the two simple mechanisms that pigeons were assumed to use: associative learning and error correction. And, like the pigeons, the AI model learned to make the right predictions to significantly increase the number of correct answers. For humans, the challenge when given tasks like those given to pigeons is that they would try to come up with rules that could make the task easier. But in this case, there were no rules, which upsets humans.

What’s interesting, though, is that pigeons use this method of learning that is very similar to AI designed by humans, Turner said. “We celebrate how smart we are that we designed artificial intelligence: at the same time, we regard pigeons as not clever animals,” he said.

1. What is the purpose of the new study?

A．To test a theory.	B．To evaluate a model.
C．To employ a strategy.	D．To involve an approach.

2. What were the pigeons expected to do in the experiment?

A．Draw circles.

B．Correct errors.

C．Copy gestures.

D．Identify images.

3. What do pigeons and AI have in common according to the study?

A．They are of equal intelligence.

B．They are good at making rules.

C．They respond rapidly to orders from humans.

D．They employ simple ways to get things done.

4. What can be a suitable title for the text?

A．Pigeons’ trial-and-error method is revealed

B．Pigeons outperform humans in tough tasks

C．“Not smart” pigeons may be as smart as AI

D．AI models after pigeons’ learning approach

10 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式.并将答案填写在答题卡上

In downtown Xiamen, Fujian Province, a 6-meter-high mound(土堆) that stretches for 60 to 70 meters stands in contrast to the high-rise     1    (construction) all around. It is a vital place for the blue-tailed bee-eaters. Now they are under second-level state     2     (protect).

The blue-tailed bee-eater, or Merops philippinus, is known for its colorful plumage and on the Chinese mainland it     3     (find) in coastal provinces, such as Fujian and Hainan.

    4    (establish) in 2011 as Xiamen’s inaugural city-level nature reserve in an urban area, the Wuyuanwan Nature Reserve provides     5     crucial habitat for the species.

In recent years, with improved environmental conditions in Xiamen and the city government’s commitment    6     nature conservation, the blue-tailed bee-eaters have become regular visitors.

In 2015, the center     7     (observe) some 70 to 80 birds in the area while in 2023, over 200 of the birds were watched at the nesting site.

The birds,     8     are sensitive to smell, build a new nest every year. Therefore, the mound must be cleared and refilled after the blue-tailed bee-eaters fly south.

    9     (safeguard) their habitat better, the city government issued a notice in 2017, setting up a protective zone around the nesting site, where noise and pollution-producing industries are prohibited     10     (strict).

The 13-year experience of preserving blue-tailed bee-eaters has given the center a grasp of their habits and made the Wuyuanwan Nature Reserve a stable home for them.