1 . When Mexican scientist of the evolution of animal behavior, Laura Cuaya, moved to Hungary for her postdoctoral studies in Budapest, she brought her pet dog, Kun-kun, along for the ride. Cuaya couldn't help noticing how locals warmed to dogs. This prompted her naturally curious scientific mind to start asking questions. “Here people are talking all the time to Kun-kun, but I always wonder if Kun-kun can recognize that people in Budapest speak Hungarian, not Spanish?” So she set out to find an answer through a scientific study.
Cuaya and her colleagues decided to use brain images from MRI scanning to shed light on her hunch. They worked with dogs of various ages that had, until the experiment, only heard their owners speak just one of the two languages, Spanish or Hungarian. Not surprisingly, getting the dogs to happily take part in the experiment took some creative coaxing and animal training! The researchers first needed to teach Kun-kun and her 17 fellow participating dogs including a labradoodle, a golden retriever and Australian shepherds, to lie still in a brain scanner. Their pet parents were always present, and they could leave the scanner at any point.
The research team played children's book classic The Little Prince in both Spanish and Hungarian while scanning the dogs' brains with an MRI machine. They were looking for evidence that their brains reacted differently to a familiar and unfamiliar language. The researchers also played scrambled versions of the story to find out if dogs could distinguish between speech and non-speech.
The images reveal that dogs' brains show different patterns of activity for an unfamiliar language than for a familiar one — the first time anyone has proved, researchers say, that a non-human brain can distinguish between two languages. This means that the sounds and rhythms of a familiar language are accessible to non-humans.
Interestingly, the team also found that the brains of older dogs were more skilled at detecting speech “suggesting a role for the amount of language exposure”. They suggest that dogs have refined their ability to distinguish between human languages over the long process of domestication.
1. What is paragraph 1 mainly about?A.The background of the study. | B.The significance of the study. |
C.The concern of the researcher. | D.The introduction to the researcher. |
A.Age limits. | B.Brain patterns. | C.Language exposure. | D.Owners' commands. |
A.practical | B.contradictory | C.compromising | D.groundbreaking |
A.Dogs Can Tell Foreign Languages | B.Dog Brains Have Different Patterns |
C.Old Dogs Know More About Human Speech | D.Dogs Can Differ Speech From Non-Speech |
What Can One City Do?
People around the world are concerned about global warming and are talking about ways to stop it. The city of Cambridge, Massachusetts, in the United States, is doing more than just talking. Cambridge wants to become a world leader in energy-efficient buildings.
Today, Naema Omar is improving her 80-year-old house in Cambridge. To keep the heat inside in the winter, she is filling the space inside the walls with insulation(绝缘). Insulation is usually made from chemicals, but in her house, she is using
But eco-friendly insulation and lighting are much more expensive than the usual kind
It was ten years ago that the city of Cambridge decided to try to reduce its carbon emissions. More than 80 percent of the carbon dioxide
3 . Last week came solid evidence that living in toxic Britain can seriously harm your health. Cardiologists at Queen Mary University of London found that even "safe" levels of air pollution are linked to heart abnormalities similar to those seen during the early stages of heart failure. Their study of almost 4,000 people was backed up by a major US study which showed that higher exposure to fine particles and nitrogen oxides is linked to an acceleration in the hardening of the arteries (动脉).
We have long known that air pollution leads to coughing, shortness of breath and irritation in the eyes, nose and throat. It is also clearly linked to respiratory diseases such as asthma and bronchitis, as well as diabetes and some cancers. It is now beyond doubt that children's health is greatly affected, and links have been made between it and Parkinson's, Alzheimer's, dementia and congenital birth defects.
The statistics are alarming. In the UK, more than 2 million people suffer from cardiovascular (心血管的) diseases, and nearly one in seven men and one in 12 women will go on to die from them. Heart disease costs the UK economy nearly £30 bn a year to treat, as much as the state spends on secondary education. It is one of the greatest single drains on the public purse. Britain, however, rejects common sense, and shows little sign that it wants to seriously address pollution any time soon.
Despite the mounting evidence of air pollution's costs and health impact, Britain has had to be dragged screaming through the courts to make it comply with minimal clean air guidelines and laws. Successive governments have continually tried to evade their legal responsibilities, spending millions of pounds fighting in the courts and lobbying the EU to be allowed to continue to pollute.
The government now has a new draft clean air strategy our for consultation until 14 August and claims to be acting faster to tackle air pollution than almost every other major developed economy. It pledges to halve the number of people living in places that do not meet World Health Organization pollution guidelines, and it propose to end the sale of new diesel and petrol cars and vans by 2040.
But intending to cut the air pollution bill by around 12.5% in 12 years and waiting 20 years to be rid of the worst vehicles seems criminally weak. Meanwhile, government is knowingly forging ahead with infrastructure plans that will inevitably increase air pollution. The effect will inevitably be to massively increase air pollution and health costs for millions of Britons.
So could the car-clogged streets of Sunder-land, Birmingham and London, where I lived for many years, have contributed to my disease and those of millions of others? Probably. Could the oil companies be responsible for far more than climate change? Certainly. Could Britain's monstrous and mounting bill for heart disease be partly due to the highly polluting diesel cars that governments so scandalously encouraged us to drive? Quite possibly.
What is certain is that air pollution is now an international scandal, and the cause of a health emergency that governments and industry have failed to address. It undoubtedly threatens life more than any war or disaster. When there are clear alternatives to burning fossil fuels then politicians who do not act to prevent it must stand accused not just of failing to act, but of condoning the mass poisoning of their people.
1. According to the study, ________ is probably unrelated to air pollution.A.diabetes | B.stomachaches | C.Alzheimer | D.artery hardening |
A.British government has been screaming for help in court |
B.EU has dissuaded British government for help in court |
C.British government has tried to have EU's permission for more pollution |
D.The government firmly refused to act in accordance with the clean air guideline. |
A.Britain will implement it faster than other major developed economies. |
B.It presents a practical way to end pollution from vehicles. |
C.Its goal will be achieved at the price of massive health cost. |
D.It's aiming too low when more pollution is expected. |
A.Government officials should feel disgraced for non-action as leaders. |
B.The government should cover the bills for air pollution and related diseases. |
C.Oil companies should not be held accountable for the international scandal. |
D.British government is an irresponsible one for encouraging people to use vehicles. |
A. stem B. dot C. attributable D. exceeded E. overlook F. exposed G. drainage H. emerging I. sinking J. access K. established |
The Mega-City Environment
Mega-cities suffer from a catalog of environmental ills. A World Health Organization(WHO)/United Nations Environment Program(UNEP)study found that seven of the cities-Mexico City, Beijing, Cairo, Jakarta, Los Angeles, Sao Paulo and Moscow-had three or more pollutants that
According to the World Resources Institute, “Millions of children living in the world’s largest cities, particularly in developing countries, are
Almost all of the mega-cities face major fresh water challenges. Johannesburg, South Africa, is forced to draw water from highlands 370 miles away. In Bangkok, saltwater is invading aquifers(地下蓄水层). Mexico City has a serious
More than a billion people, 20 percent of the world’s population, live without regular
Mega-city residents, crowded into unsanitary slums, are also subject to serious disease outbreaks. Lima, Peru(with population estimated at 9.4 million by 2015)suffered a cholera outbreak in the late 1990s partly because, as the New York Times reported, ”rural people new to Lima...live in houses without running water and use the outhouses(屋外厕所)that
It’s worth looking at some of these
请根据下图用英语写一篇短文。你的短文应包括下列要点:
1.简要描写图画内容;
2.这一现象产生的原因;
3.发表你对解决此类问题的看法。
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6 . 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 |
7 . Brazil’s election offers hope for the rainforest
A presidential election in 2022 will offer a chance for Brazil’s government to reverse policies that have
On his watch, environmental enforcement and fines dropped to record lows. Activists say this has encouraged
A greener president would try to crack down on such crimes. Polls
But even an enlightened president will have to battle a
Better leadership in Brazil could jump-start regional efforts to boost enforcement and find sustainable
A.referred | B.contributed | C.amounted | D.related |
A.footprint | B.sink | C.source | D.emission |
A.indeed | B.instead | C.accidentally | D.otherwise |
A.stepped down | B.took office | C.claimed precedence | D.kept watch |
A.seasonal | B.selective | C.illegal | D.professional |
A.involvement | B.attachment | C.limitation | D.existence |
A.advise | B.advocate | C.suggest | D.represent |
A.sustainable | B.economic | C.rapid | D.rural |
A.claim | B.manage | C.create | D.borrow |
A.farmer-friendly | B.warm-blooded | C.pressure-free | D.profit-making |
A.realise | B.normalize | C.publicise | D.legalise |
A.sold | B.explored | C.cleared | D.occupied |
A.election | B.argument | C.appeal | D.decision |
A.main | B.varied | C.final | D.same |
A.replacements | B.transitions | C.alternatives | D.references |
8 . The cultivation of plants by ants is more widespread than previously realized, and has evolved on at least 15 separate occasions.
There are more than 200 species of ant in the Americas that farm fungi (真菌) for food, but this trait evolved just once sometime between 45 million and 65 million years ago. Biologists regard the cultivation of fungi by ants as true agriculture appearing earlier than human agriculture because it meets four criteria: the ants plant the fungus, care for it, harvest it and depend on it for food.
By contrast, while thousands of ant species are known to have a wide variety of interdependent relationships with plants, none were regarded as true agriculture. But in 2016, Guillaume Chomicki and Susanne Renner at the University of Munich, Germany, discovered that an ant in Fungi cultivates several plants in a way that meets the four criteria for true agriculture.
The ants collect the seeds of the plants and place them in cracks in the bark of trees. As the plants grow, they form hollow structures called domain that the ants nest in. The ants defecate (排便) at designated absorptive places in these domain, providing nutrients for the plant. In return, as well as shelter, the plant provides food in the form of fruit juice.
This discovery prompted Chomicki and others to review the literature on ant-plant relationships to see if there are other examples of plant cultivation that have been overlooked. “They have never really been looked at in the framework of agriculture,” says Chomicki, who is now at the University of Sheffield in the UK. “It’s definitely widespread.”
The team identified 37 examples of tree-living ants that cultivate plants that grow on trees, known as epiphytes (附生植物). By looking at the family trees of the ant species, the team was able to determine on how many occasions plant cultivation evolved and roughly when. Fifteen is a conservative estimate, says Campbell. All the systems evolved relatively recently, around 1million to 3 million years ago, she says.
Whether the 37 examples of plant cultivation identified by the team count as true agriculture depends on the definitions used. Not all of the species get food from the plants, but they do rely on them for shelter, which is crucial for ants living in trees, says Campbell. So the team thinks the definition of true agriculture should include shelter as well as food.
1. According to biologists, why is ant-fungus cultivation considered as a form of true agriculture?A.Because it occurred earlier than human agriculture. |
B.Because it fulfills the standards typical of agricultural practices. |
C.Because it redefines the four criteria for true human agriculture. |
D.Because it is less common than previously thought. |
A.They determined on new family trees of the ant species. |
B.They overlooked some tree-living ants that provided nutrients for the plants. |
C.They never studied the ant-plant relationships within the context of agriculture. |
D.They never identified any an t species that engaged in cultivation of fungi. |
A.Ants’ cultivation of plants is limited to a few specific species. |
B.The cultivation of fungi by ants is considered the earliest form of agriculture. |
C.True agriculture in ants involves only food-related interactions with plants. |
D.Ants have independently cultivated plants on at least 15 distinct occasions. |
A.The evolution of ants in the plant kingdom. |
B.The widespread occurrence of ant-plant cultivation. |
C.The discovery of a new ant species engaging in agriculture. |
D.The contrast between ant agriculture and human agriculture. |
9 . The UN this week launched a report urging companies to stop issuing false net-zero targets that amount to greenwashing.
Greenwashing is a term used to describe situations where companies mislead consumers by claiming to be eco-friendly or sustainable as a marketing plan rather than as a core principle of their business model. Often, these industries spend more money making themselves appear sustainable than they do taking actual sustainable measures into their company.
Cities, financial institutions, and scores of companies have announced plans to reduce their emissions to zero, which, in principle, should help the fight against climate change.
“The problem is that the criteria for these net-zero commitments have varying levels of precision and loopholes (漏洞),” said UN Secretary-General Antonio Guterres during the launch of the report.
Many net-zero plans contain far-away or unclear targets and often call for the use of unproved technologies like carbon capture and tree planting, which effectively allow companies to continue polluting the atmosphere. Studies show that most of these net-zero plans will do little to stop temperatures from rising. For example, many oil majors have announced plans to reduce emissions from their operations to zero by 2050 that do not take into account the carbon emitted by the fossil fuels they sell, which would allow them to increase production. Far from decreasing, fossil fuel production is going strong.
To close these net-zero loopholes, the UN this week released a report that includes 10 recommendations to ensure that companies, cities, regions, and other non-state actors issue credible and accountable net zero commitments. “Their plans cannot rely on cheap carbon credits instead of immediately cutting their own emissions,” Guterres said.
Financial institutions need to cut down emissions from all their investments and businesses need to bring down the carbon footprint of their supply chain, the report said. The report’s lead author, Catherine McKenna, urged companies to release new net-zero targets within a year. The updated targets must contain concrete actionable details.
1. What does “greenwashing” refer to?A.A green technology. | B.A misleading statement. |
C.A business model. | D.A spending target. |
A.To prove oil majors are really responsible. |
B.To set some good examples for other companies. |
C.To show some net- zero commitments make no sense. |
D.To indicate the benefit of net zero plans to climate change. |
A.Dissatisfied. | B.Guilty. | C.Shocked. | D.Confused. |
A.Plant more trees. | B.Share more supply chains. |
C.Depend on cheap carbon credits. | D.Make concrete actionable targets. |
10 . The part of the environmental movement that draws my firm’s attention is the design of buildings. Today, thousands of people come to
Home builders can now use materials, such as green paints, that release significantly
Look at it this way: no one
A.commercial | B.green | C.traditional | D.simple |
A.efficient | B.changeable | C.influential | D.effective |
A.relevant | B.indoor | C.flexible | D.forward |
A.revealed | B.displayed | C.exhibited | D.discovered |
A.careful | B.comfortable | C.stable | D.safe |
A.reduced | B.revised | C.delayed | D.defined |
A.destroy | B.deny | C.dissolve | D.depress |
A.Anyway | B.Besides | C.Anyhow | D.However |
A.exactly | B.completely | C.partially | D.superficially |
A.restored | B.regain | C.reused | D.retain |
A.developed | B.stretched | C.researched | D.constructed |
A.sets off | B.sets about | C.sets out | D.sets up |
A.instead | B.because | C.out | D.regardless |
A.adjusting | B.adopting | C.adapting | D.admitting |
A.functional | B.sensible | C.beneficial | D.precious |