1 . While they can’t pick out precise numbers, animals can comprehend that more is, well, more. From birds to bees and wolves to frogs, animals use numbers to hunt, find a mate, return to their home, and more. Researchers believe that this ability, known as numerical competence, plays an important role in how animals make these decisions. Andreas Nieder, a biologist at the University of Tübingen, explores the current literature on how different animals comprehend numbers.
Honeybees, for instance, can remember the number of landmarks they pass when searching for food in order to find their way back home. This ability can also be seen in animals choosing a larger amount of food over a smaller amount or in animals forming hunting groups. Wolves are more likely to hunt successfully if they have the right number of wolves in their pack for their prey (猎物) with prey like elk (驼鹿), only around six to eight wolves are needed, while hunting wild pigs requires a pack of nine to thirteen. Their prey also uses this concept to protect themselves—elk tend to live in small groups, which rarely have encounters with wolves, or gather in large groups to reduce the chance of any individual becoming prey. “They are assessing the number of individuals in their groups for their everyday life situations,” Nieder says.
Furthermore, numerical competence also plays a role in attracting a mate. For example, male frogs sing “advertisement” calls to attract females. The females, listening to their complicated calls, choose the males that sing the most “chucks” in their calls.
Now researchers do have some sense of the rules that govern numerical competence in animals. For example, they count approximately (大概) rather than specifically and two numbers need to be more different for them to tell them apart as those numbers get bigger. However, Nieder argues that more research needs to be done. “I hope I can encourage behavioral ecologists to specifically explore numerical competence in the wild, and, in doing so, also open new research fields,” he says.
1. What do the examples of wolves and elk suggest about numerical competence?| A．It gives animals a reproduction benefit. | B．It affects animals’ chances of survival. |
| C．It is decided by animals’ hunting ability. | D．It develops well in social animals. |
| A．By listing figures. | B．By asking questions. |
| C．By giving examples. | D．By making comparisons. |
| A．Its fundamental rules. | B．Its appeal to behavioral ecologists. |
| C．Researchers in new study fields. | D．Expectations for further studies. |
| A．Animals’ understanding of numbers gives them an advantage |
| B．Numerical competence research achieves a breakthrough |
| C．Animals develop numerical competence? Never |
| D．Can many animals count? Better than you |
2 . A new study by scientists at Utrecht University concludes that about half of global wastewater is treated, rather than the previous estimate of 20%. Despite this promising finding, the authors warn that treatment rates in developing countries are still very low.
Humans and factories produce vast quantities of wastewater per day. If not properly collected and treated, wastewater may severely threaten human health and pollute the environment.
The authors use national statistics to estimate volumes of wastewater production, collection, treatment and reuse. “Globally, about 359 billion cubic metres of wastewater is produced each year, equivalent to 144 million Olympic-sized swimming pools,” says Edward Jones, PhD researcher at Utrecht University. “About 48 percent of that water is currently released untreated. This is much lower than the frequently announced figure of 80%.”
While the results show a more optimistic outlook, the authors stress that many challenges still exist. “We see that particularly in the developing world, where most of the future population growth will likely occur, treatment rates are falling behind,” Jones explains. “In these countries, wastewater production is likely to rise at a faster pace than the current development of collection and treatment basic facilities. This poses serious threats to both human health and the environment.”
The main problem, especially in the developing world, is the lack of financial resources to build basic facilities to collect and treat wastewater. This is particularly the case for advanced treatment technologies, which can be extremely expensive. However, the authors highlight potential opportunities for creative reuse of wastewater streams that could help to finance improved wastewater treatment practices.
“The most obvious reuse of treated wastewater is to increase freshwater water supplies,” Jones states. Treated wastewater reuse is already an important source of irrigation water in many dry countries. However, only 11% of the wastewater produced globally is currently being reused, which shows large opportunities for expansion.
“But freshwater increasing is not the only opportunity,” says Jones. “Wastewater also has large potential as a source of nutrients and energy. Recognition of wastewater as a resource, opposed to as ‘waste’, will be the key to driving improved treatment going forward.”
However, the authors stress the importance of proper monitoring of wastewater treatment factories, accompanied by strong legislation (法律) and regulations, to ensure that the reuse of wastewater is safe. The authors also acknowledge public acceptance as another key barrier towards increasing wastewater reuse.
1. According to the author, the meaning of treating wastewater lies in ________.| A．encouraging new scientific findings |
| B．estimating volumes of wastewater production |
| C．ensuring human health and protecting the environment |
| D．measuring how much wastewater is produced globally per day |
| A．equal | B．harmful | C．useful | D．friendly |
| A．treated wastewater can’t be used as irrigation water |
| B．wastewater production in developing countries is falling |
| C．the treatment of wastewater is more serious than estimated |
| D．public recognition plays an important role in wastewater reuse |
3 . Have you ever enjoyed a trip to a zoo, but wondered whether it is acceptable for humans to keep so many treasured animals in cages. You are not alone. Many people concerned about the fate of zoo animals and feel conflicted about the very existence of zoos. However, there is no reason to worry.
Most zoos around the world provide the highest level of care and cleanliness for their animal residents. In fact, animals in zoos often experience far healthier lives than they would in the wild due to the access to medical care.
Zoos provide opportunities for people of all ages to view and connect with animal life that they would otherwise not encounter. By interacting with wild life, people can gain a greater appreciation for the animals of the world. Zoos offer educational experiences through which people can learn why it is so important to protect and maintain the diversity of animal life on Earth.
Zoos also function as places where these often rare or endangered animals can be studied. By keeping and raising animals in cages, extensive research can be conducted on the animals to help scientists understand them. This scientific understanding, in turn, contributes to conservation efforts around the world. Because zoos are a safe place for animals to be observed, scientists are able to make important discoveries about their lives.
While it is true that not all zoos are as well maintained and equipped, there is growing international pressure for universal regulations that will ensure the monitoring of all public zoos. This type of legal support will allow the world’s zoos to continue their important research programs, many of which are adjusted toward breeding programs designed to make more endangered species come in. Breeding programs are essential to continue certain species which are nearly wiped out from the wild, and zoos are the ideal place for these programs to promote the increase of the animals. In this manner, zoos contribute to restoring balance in the wilderness by giving endangered species a second-chance at survival.
If you visit a top-ranking zoo, you will enjoy viewing animals in a habitat designed to support their health. You can rest assured that by supporting such zoos as a visitor, you are also supporting valuable science and conservation efforts. Your interactions with the animals and exhibits might educate you further about creatures in parts of the world you haven’t been exposed to.
When people are inspired, they tend to take action more readily, and zoos are an inspiring example of this truth. Zoos provide an unforgettable experience in appreciating animal life and take concrete action towards advocating for their future.
1. According to the passage, most zoos ________.| A．worry about the fate of rare and treasured animals |
| B．create ways for people to observe and learn animals’ life |
| C．provide poor care and unclean environment for the animals |
| D．educate people to try their best to control the diversity of animals |
| A．public zoos around the world are all monitored |
| B．only the endangered animals should be kept in zoos |
| C．visiting zoos contributes to protecting endangered animals |
| D．Top-ranking zoos allow visitors to study animals’ habitats |
| A．critical | B．cautious | C．supportive | D．anxious |
| A．Are Zoo Animals Healthy? | B．Are Zoos Really Bad News? |
| C．Why Should We Study Animals? | D．Should Animals Be Kept in Cages? |
4 . The most obvious dog fetish (迷恋) today is the longing for cuteness. Almost every day you can see adorable pictures of dogs and other animals that will make you smile and say, “How cute!”
It is a cultural phenomenon that the media scholar James Meese calls the “cute economy” which exists primarily on social media, is user-generated, and is heavily dominated by pictures of animals, especially pets. The goal is to generate a positive response, probably followed by a tap on the screen to “like” and “share”. We can click through image after image of cute animals doing cute things, feeling a little boost of good cheer.
The marketing researchers have identified some of the most common categories of cuteness in online pet content: animals doing silly things; animals of extreme size; animals with unusual looks; and animals behaving in ways that seem human-like. Dogs and other animals in the “cute economy” are often further humanized by being dressed in clothing and accessorized (装饰) with hats, jewellery, nail polish and fur dyed a rainbow of colors. Users who post successfully and with some strategies can make money by doing so. Thus, certain dogs have become cuteness celebrities, with millions of devoted followers and paid content from advertisers.
Unfortunately, the price of the “cute economy” comes at a serious cost. The cutest and most popular breeds tend to be those with the most significant risk of health and behavioral problems. Cuteness is often coupled with their discomfort. People are drawn to the cuteness of dogs with extremely foreshortened skulls and extremely short legs and awkwardly long bodies, such as the French bulldog and the corgi.
Actually, there are well-established health issues. We should treat the “cute economy” with caution, like resisting the commodification (商品化) of appearance by opting out of social media channels promoting the “cute economy”. We can also choose not to “like” or “share” images of dogs whose cuteness is linked with discomfort. Although we are biologically attracted to dogs that are super cute, we should be mindful in our “impulses”.
1. What is the key to the “cute economy” according to the text?| A．Taking photos of different animals. |
| B．Cute animals’ attractive appearance. |
| C．Pets’ owners’ liking adorable pictures. |
| D．Posting cute animals’ pictures on social media. |
| A．A normal-sized dog is eating bones. |
| B．A white cat is quietly lying next to its owner. |
| C．A monkey is attentively taking care of its baby. |
| D．A parrot dressed in a suit is singing and dancing. |
| A．It will change the animals’ nature. |
| B．It may make the animals not so cute. |
| C．It may cause health problems to the animals. |
| D．It will result in a decline in animal population. |
| A．The Cute Economy and Its Price | B．Share Pictures or Not |
| C．Happiness from Pets | D．Marketing Strategy — Cuteness |
5 . In habitats across the planet, animals periodically drop everything to walk, fly or swim to a new place. Some animals such as whales and geese learn migration paths by following their parents. Others, including small songbirds, gain the distance and direction of their migration within their genetic code. And some animals use a combination of genetics and culture to guide their migration.
Another group of migrators does not quite fit either model, and researchers have only recently started to figure out how they find their way. The Cory’s shearwater is an oceangoing seabird that migrates over the Atlantic every year. The young do not migrate with their parents, so culture cannot explain their journeys. And the exact paths vary wildly from individual to individual, making genetics equally unlikely.
Cory’s shearwaters are long-lived, rarely producing young successfully before age nine. This leaves an opening for learning and practice to develop their migration patterns. Researchers call this the “exploration-refinement”, and until now it has been hypothetical (假设的) because of difficulties in tracking migratory animals’ movements.
But a team of researchers has done that by attaching small geolocators to more than 150 of the birds aged four to nine. They found that younger birds traveled longer distances, for longer periods, and had more diverse paths than older birds. “We finally have evidence of the ‘exploration-refinement’ for migratory birds,” says Letizia Campioni, who led the study. Younger Cory’s shearwaters are able to fly just as fast as the adults——but they do not, suggesting that the young do more exploring, which gradually fades as they mature and settle into a preferred course.
“Although it may seem less efficient than other strategies, exploration refinement could be beneficial to birds and other organisms in a rapidly changing world due to unpredictable man-made changes,” says Barbara Frei. “It might be safer to repeat a behavior that was recently successful than to rely on patterns that were perfected long ago but might no longer be safe.”
1. What is the first paragraph mainly about?| A．It describes animals’ habitats. | B．It compares different species. |
| C．It talks about migration models. | D．It introduces a tracking technology. |
| A．The opening for learning and practice. |
| B．The unique living habit of Cory’s shearwaters. |
| C．The process scientists track Cory’s shearwaters’ movements. |
| D．The way Cory’s shearwaters form their migration patterns. |
| A．They travel as much as adult birds. | B．They lower the speed for exploration. |
| C．They move in a predictable manner. | D．They look for a course with their parents. |
| A．Exploration refinement contributes to birds’ adaptability. |
| B．Man-made changes make migration easier. |
| C．Animals make a safer journey via a fixed track. |
| D．A combination of strategies assures migration success |
6 . In recent years, lots of American companies have gotten behind a potential climate solution called carbon capture and storage, and the government has backed it with billions of dollars in tax preferences and direct investments. The idea is to trap planet-heating carbon dioxide from the smokestacks of factories and power plants and ship it to sites via thousands of miles of new pipelines. Communities nationwide are pushing back against these pipeline construction and underground sites, arguing they don’t want the pollution running through their land.
Now the U. S. Forest Service is proposing to change a rule to allow storing this carbon dioxide pollution under the country’s national forests and grasslands. “Authorizing carbon capture and storage on National Forest System (NFS) lands would support the Administration’s goal to reduce greenhouse gas emissions by 50 percent below the 2005 levels by 2030,” the proposed rule change says.
Some experts, like June Sekera, a research fellow with Boston University, question the timing of the proposed rule change, given community pushback across the country to pipelines planned on private land. Yet she says the Forest Service proposal to open up national parks for CO2 storage is “an end run around local towns and counties. And it’s a much simpler and way less expensive route.”
In an email, Scott Owen, press officer for the Forest Service, writes that the proposed rule change would allow the Forest Service to consider proposals for carbon capture and storage projects. He writes that any proposals must still pass through a secondary screening, adding, “The Forest Service has been ‘screening’ proposals for use of NFS lands for over 20 years as a means to be increasingly consistent in our processes and also be able to reject those uses that are inconsistent with the management of the public’s land. ” He notes the Forest Service currently does not have any carbon capture project proposals under consideration. The Forest Service has opened public comments on the proposed rule change until Jan. 2, 2024.
1. What does the Forest Service intend to do by changing a rule?| A．Answer the appeals of communities. | B．Provide legal space for carbon storage. |
| C．Enlarge national pipeline storage capacity. | D．Loosen tax burden on American companies. |
| A．An eventful act. | B．A desperate try. |
| C．An alternative way. | D．A breathtaking race. |
| A．It is still up in the air. | B．It is dead in the water. |
| C．It is widely recognized. | D．It is far from satisfactory. |
| A．A fruitful research. | B．A timely rule change. |
| C．An authorized project. | D．A controversial proposal. |
7 . In the animal kingdom, killer whales (虎鲸) are social stars: they travel in varied family groups, care for grandchildren, and even imitate human speech. Now, scientists are adding one more behavior to the list: forming fast friendships. A new study shows killer whales can rival animals such as chimpanzees and macaques (a kind of monkey), and even humans when it comes to the kind of “social touch” that indicates strong bonds.
Some ocean animals maintain social structures — including male dolphins that learn the “names” of their close allies (盟友). But there is little data about wild killer whales. That’s where drone (无人机) technology came in. Michael Weiss, a behavioral ecologist, teamed up with his colleagues to launch drones, flying them 30 to 120 meters above a group of killer whales. That was high enough not to trouble the whales, marking the first time drones have been used to study friendly physical contact in whales.
The researchers recorded over 800 instances of physical contact between individuals. Those included hugs, back-to-back and nose-to-nose touches between pairs of whales. Other whales playfully threw young whales into the air, letting them fall into the water. Besides, the drone images revealed clear preferences among individuals, usually for one “best friend” of the same sex and age. Take J49 and J51 — two distantly related young males aged 9 and 6 — for instance. “Every time you see a group of whales, those two are right there interacting with each other,” Weiss says.
The young led most of these interactions, rather than the older females or males. Older males in particular were less important. “The young individuals really seem to be the glue holding the groups together,” Weiss says. As individuals age, this gradual loss of “centrality” is known in many social mammals, including humans. That finding is “especially appealing” to Stacey Tecot, who wasn’t involved in the study. “Scientists have long observed this social aging trend in animals, but there are still many unanswered questions,” she says. That’s certainly on the researchers’ radar. “We’re already gathering new data, with more advanced equipment,” says Weiss.
1. What does the underlined word “rival” in Paragraph 1 probably mean?| A．Benefit from. | B．Be equal to. | C．Depend on. | D．Be fond of. |
| A．The research method. | B．The variety of species. |
| C．The size of the research team. | D．The time spent on the research. |
| A．They have a stable friendship. | B．Their interactions are more complicated. |
| C．Their communicating ways change frequently. | D．They prefer playing with young female whales. |
| A．More researchers will be involved in the study. |
| B．Other scientists take a negative attitude to the research. |
| C．Researchers will collect more data to study killer whales. |
| D．Researchers will uncover the social aging trend in animals soon. |
8 . Most pet owners are clear about the immediate joys that come with sharing their lives with companion animals. However, many of us remain unaware of the physical and mental health benefits that a furry friend can bring us.
Increasing exercise. Taking a dog for a walk, hike or run is a fun and rewarding way to fit healthy daily exercise into your schedule. Studies have shown that dog owners are far more likely to meet their daily exercise requirements, and exercising every day is great for the animal as well.
Providing companionship. Companionship can help prevent illness and even add years to your life, while isolation and loneliness can trigger symptoms of depression.
Adding structure and routine to your day.
| A．Reducing anxiety. |
| B．Finding meaning in life. |
| C．Pets provide valuable companionship for older adults. |
| D．Caring for an animal makes you feel needed and wanted, especially if you live alone. |
| E．In fact, caring for a pet helps us make many healthy lifestyle changes. |
| F．It will deepen your bond and keep your pet fit and healthy. |
| G．Many pets, especially dogs, require a regular feeding and exercise schedule. |
9 . Moments ago, a seal was resting on a piece of floating ice deep in an Antarctic channel. Then three hungry killer whales appeared. When the seal noticed them, it was already surrounded.
On this sheet of sea ice, the nearly thousand-pound sea l would be unreachable for most of his enemies in nature. But these killer whales had mastered a hunting technique called wave washing: working together to turn water into a weapon.
Having identified their target, the killer whales formed a battle line and started rushing toward the ice. Just before reaching it, they rolled to their sides in a single, synchronized (同步的) motion. The wave they created was so powerful that it flooded the ice sheet and washed the frightened seal close to the edge of the ice sheet. Slowly and methodically, they repeated the attack. At the third time, the wave sent the helpless seal flying into the sea. It struggled to climb onto a piece of ice, but then disappeared from view...
“The level of intelligence that went into making each wave was staggering. They solved the problem with very complex teamwork. They used water as a tool,” said wildlife filmmaker Bertie Gregory, who had spent a decade tracking those killer whales, known as Bls. “I rarely saw failed hunts. This behavior was not what they were born with. It was learned and mastered over decades. Every time they made waves, it almost felt like more of a teaching experience than hunting. It was terrifying to watch.”
But as Antarctica warms and sea ice disappears, seals are increasingly staying on land, out of killer whales’ reach.
“I’ve found Bls are losing about 5 percent of their population every year. Whether this subgroup will go extinct or just adapt their behavior, I don’t know,” said Gregory. “But with fewer opportunities for the killer whales to wave wash, I’m seeing an extinction of a culture.”
1. How did the killer whales get the seal on the ice sheet?| A．By making huge waves. | B．By jumping onto the ice sheet. |
| C．By destroying the ice sheet. | D．By waiting underwater patiently. |
| A．Puzzling. | B．Shocking. | C．Satisfying. | D．Annoying. |
| A．The seals and killer whales. | B．The rising sea level. |
| C．The loss of a hunting skill. | D．The disappeared ice sheet. |
| A．It is a natural behavior with whales. | B．Usually, the smartest whales can learn it. |
| C．It can be carried out by one whale alone. | D．Perhaps, it is only mastered by certain groups. |
10 . Ensuring that your home is as energy-efficient as it can possibly be is essential. Take the steps listed below, and you’ll be living in an energy-efficient home in no time.
The old boilers (锅炉) are not as energy-efficient as the very latest models in this field.
Only when you know how much energy you use can you take action to be less wasteful and more resourceful in this instance.
With just twelve years (now seven years) to go until climate change alters earth forever, now is the time for you to play your part in protecting the planet that you live in.
| A．The investment demanded in this instance is significant. |
| B．Taking such action will help you adapt to climate change. |
| C．Generally, this type of device will cost between £25 and £40. |
| D．It means you should try to keep track of energy consumption. |
| E．By putting the above advice into practice, you’ll be green soon. |
| F．Most of your home’s wasted energy will escape through your roof. |
| G．It might be high time to update yours if you haven’t done so for years. |
