The sixth mass extinction of life on the Earth is unfolding more quickly than feared, scientists have warned. More than 30 percent of animals with a backbone — fish, birds, amphibians, reptiles and mammals — are declining in both range and population, according to the first comprehensive analysis of these trends.
Around a decade ago, experts feared that a new range wipeout of species was appearing. Today, most agree that it is underway — but the new study suggests that the die-out is already growing fast.
The loss of biodiversity has recently accelerated. Several species of mammals that were relatively safe one or two decades ago are now endangered, including cheetahs, lions and giraffes, the study showed.
There is no mystery as to why: our own ever-expanding species — which has more than doubled in number since 1960 to 7.4 billion — is eating, crowding and polluting its planetary cohabitants out of existence. By comparison, there are as few as 20,000 lions left in the wild, less than 7,000 cheetahs, 500 to 1,000 giant pandas.
The main drivers of wildlife decline are habitat loss, over-consumption, pollution, other species, disease, as well as hunting in the case of tigers, elephants, rhinos and other large animals prized for their body parts.
Climate change is thought to become a major threat in the coming decades, with some animals — most famously polar bears — already in decline due to rising temperatures and changing weather patterns.
1. What does the underlined word “accelerated” in Paragraph 3 mean?| A．Made up. | B．Put up. |
| C．Sped up. | D．Used up. |
| A．The mankind’s population is growing fast. |
| B．The air pollution is too severe. |
| C．There are fewer species in larger areas. |
| D．Man causes wider water pollution. |
| A．Outside animals. |
| B．Loss of living areas. |
| C．Various illnesses. |
| D．Lack of water. |
| A．Uncertain. | B．Hopeful. |
| C．Doubtful. | D．Unsatisfying. |
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【推荐1】The “swim-with-dolphins” tourist industry is becoming more popular every year with the increase of people’s income. After all, it can cost a large amount of money to have this kind of holiday experience. So tour operators try to place eager swimmers as near as possible to the dolphins by trying to predict where the dolphins will be.
Research has shown that while dolphins can move away if they do not want to interact (交流） with human swimmers, they do not like it at all if the swimmers slip into the water directly on top of them or if humans are in their path of travel. However, if swimmers enter the water to one side of them, the dolphins do not avoid the swimmers to the same extent.
In all cases, the dolphins seem to have become more sensitive to the presence of the swimmers. For dolphins, swimming among or with humans is not necessarily a high priority. This research has shown that only 19% of any group of dolphins will participate in interaction. Young dolphins are the most likely to interact; they do seem curious about being with humans. It is believed that they see humans as “entertainment” and that the interaction is a new and unusual experience for them.
It is frequently asked whether “swim-with-dolphins” tourism should be discontinued. The advice is that dolphins should be given enough periods of time throughout the day when they are not exposed to tourism. Permitted interactions should not be too disturbing to the dolphins since there could be mothers and calves (幼崽） present in dolphin groups. There should also be educational campaigns about the creatures and what is likely to cause danger to them.
It is not easy to explain to someone that they cannot fulfill their lifelong dreams because the dolphins are resting, or that a mother dolphin and calf are in the area. But if we are to enjoy these remarkable animals and not just use them for our entertainment, then we must carefully monitor the “swim-with-dolphins” industry worldwide.
1. What makes “swim-with-dolphins” tourism popular?| A．The local government’s encouragement. |
| B．The improvement of people’s living standard. |
| C．The increasing number of tourists. |
| D．The high profits of the industry. |
| A．They do this out of curiosity. |
| B．They like humans better. |
| C．They are less sensitive. |
| D．They prefer new things by nature. |
| A．Make people know the hidden threat to dolphins. |
| B．Strictly limit the expansion of the industry. |
| C．Avoid interaction with young dolphins. |
| D．Expose dolphins to tourists only in the daytime. |
| A．Negative. |
| B．Cautious. |
| C．Supportive. |
| D．Optimistic. |
【推荐2】Female birds sing, too, but scientists tend to tune in to male birdsong and ignore female songs. It highlights a long-standing bias (偏见) and helps us think about why that bias persists (持续).
Since the beginning of modern birdsong research, the field has focused on male songbirds. Any serious birder could tell you that females do sing, sometimes as frequently as males. However, early birdsong researchers tended to be men. Men are significantly less likely than women to lead research projects studying female songs. Thus, we are missing key behaviors as a result of historical biases caused by a lack of diverse participation in science.
So how do we make science welcoming and accessible for all? We need to communicate better with nonscientists. Engaging the public in science is essential for basic science findings that influence how we perceive the world around us.
For example, understanding that female birds do sing matters not only to scientists but also to the billions of people who hear the sounds of wild birds every day. In many species, males and females look similar from a distance, but can be distinguished by ear. Paying close attention to which sounds each sex makes and thinking about why they might be producing them opens up a richer window into the environment around us. It turns out female birds use songs for all the same reasons male birds do: to signal individual identity, defend valuable territories and attract potential mates.
Public awareness of female birdsong has the potential to change the science itself. Apps like eBird collect millions of public observations and audio recordings of birds every year. Increasing public engagement and involvement with research promises to benefit the scientific community and society more broadly. In many cases, scientists and experts already have strongly held biases about the way the world works, and these biases allow mistaken conclusions to persist. Public observers often make better observers of the world around them because they lack preconceived ideas.
Female birds sing! We welcome a future where research and communication combine to improve our understanding of the world around us and deepen our connections to each other and the natural world.
1. What does the second paragraph mainly talk about?| A．Who is to blame for the long-standing bias. |
| B．Why female birdsong is long ignored by scientists. |
| C．What contributes to diverse participation in science. |
| D．How men have conducted modern birdsong research. |
| A．It will enable us to become real scientists. |
| B．It will help us distinguish bird species by ear. |
| C．It will expand our understanding of the world. |
| D．It will make advanced science accessible for all. |
| A．Biased. | B．Creative. |
| C．Mistaken. | D．Varied. |
| A．Why we Didn't Know That Female Birds Sing? |
| B．Advancing Science: How Bias Leads Us Forward |
| C．New Research Has Found Female Birds Sing Too! |
| D．A Case Study of Gender Bias in Science Reporting |
【推荐3】Researchers say they have translated the meaning of gestures that wild chimpanzees (黑猩猩) use to communicate. They say wild chimps communicate 19 specific messages to one another with a “vocabulary” of 66 gestures. The scientists discovered this by following and filming groups of chimps in Uganda, and examining more than 5,000 incidents of these meaningful exchanges.
Dr Catherine Hobaiter, who led the research, said that this was the only form of intentional communication to be recorded in the animal kingdom. Only humans and chimps, she said, had a system of communication where they deliberately sent a message to another group member.
“That’s what’s so amazing about chimp gestures,” she said. “They’re the only thing that looks like human language in that respect.”
Although previous research has shown that apes and monkeys can understand complex information from another animal’s call, the animals do not appear to use their voices intentionally to communicate messages. This was a significant difference between calls and gestures, Dr Hobaiter said.
Chimps will check to see if they have the attention of the animal with which they wish to communicate. In one case, a mother presents her foot to her crying baby, signaling: “Climb on me.” The youngster immediately jumps on to its mothers back and they travel off together. “The big message from this study is that there is another species (物种) out there. that is meaningful in its communication, so that’s not unique to humans,” said Dr Hobaiter.
Dr Susanne Shultz, an evolutionary biologist from the University of Manchester, said the study was praiseworthy in seeking to enrich our knowledge of the evolution of human language. But, she added, the results were “a little disappointing”.
“The vagueness of the gesture meanings suggests either that the chimps have little to communicate, or we are still missing a lot of the information contained in their gestures and actions,” she said. “Moreover, the meanings seem to not go beyond what other animal convey with non-verbal communication. So, it seems the gulf remains. ”
1. What do chimps and humans have in common according to Dr Hobaiter?| A．Memorizing specific words. | B．Understanding complex information. |
| C．Using voices to communicate. | D．Communicating messages on purpose. |
| A．It was well designed but poorly conducted. |
| B．It was a good try but the findings were limited. |
| C．It was inspiring but the evidence was unreliable. |
| D．It was a failure but the methods deserved praise. |
| A．Difference. | B．Conflict. | C．Balance. | D．Connection. |
| A．Chimpanzee behaviour study achieved a breakthrough |
| B．Chimpanzees developed specific communication skills |
| C．Chimpanzees: the smartest species in the animal kingdom |
| D．Chimpanzee language: communication gestures translated |
【推荐1】Small and round transparent water bottles filled with natural water could help provide a solution to London's plastic waste problem, according to Skipping Rocks Lab, the company in the British capital that produces them. They added that the balls have been made of plant and seaweed extracts and will decompose（分解）after four to six weeks if not consumed.
With many cities struggling to get rid of vast numbers of used plastic water bottles, the ‘Ooho’ has begun to meet the thirst of consumers in San Francisco and London. A report published last Thursday said more than 4,000 plastic bottles had been removed from the River Thames in a month last year, proving the scale of the waste problem.
"We think Ooho may not be the solution for all the applications that plastic bottles have, but definitely for short term consumption it could be a solution," said Rodrigo, the founder of Skipping Rocks Lab. In a trial near London Bridge last Wednesday, Ooho drew a mixture of surprise, amusement and delight among those who sampled them. London's city assembly said Ooho was a step forward. "It could be part of the solution but not the only solution. You also need to be able to refill bottles at railway stations for example," said Leonie Cooper, the Chair of the assembly's environment committee.
The company aims to target, among other consumers, marathon runners, who will be able to eat the Oohos mid-race without concerns about the environment. It is also considering sealing alcohol for a whole new market. "People see these small round bubbles and they just think ‘shots’. So that's definitely something we're looking at," said Skipping Rocks Lab Chief Operating Officer Lise. "We have sealed alcohol, we want to perfect it, and hopefully this will be the great change of the future."
1. ‘Ooho’ can help solve the plastic waste problem because ________.| A．it is small and transparent | B．it is filled with natural water |
| C．it is made of plant and seaweed | D．it can disappear some time later |
| A．Subjective. | B．Unreal. |
| C．Objective. | D．Ridiculous. |
| A．Technology and Invention. | B．Health and Medicine. |
| C．Industry and Economy. | D．Tourism and Development. |
【推荐2】SYDNEY —Australian scientists have designed a system which uses microwaves to break down plastic into an environmentally friendly by-product.
Head of Electrical Engineering at Australia’s James Cook University, Prof. Mohan Jacob revealed on Thursday that by using microwaves, plastic waste can be converted into biochar(生物炭), charcoal that can be used as a soil conditioner.
“We are developing a processing room, which could process many kinds of plastic materials, up to 5 kilograms of waste,” Jacob said. “It will be a typical example system for the development of biochars from different types of plastics under various conditions.” Jacob explained that microwave energy is used to heat the plastic waste above 600 degrees centigrade within the custom-made room, where it ends up as a biochar, which can then be used to improve the properties of soil.
Currently underway is step one of the project, testing the room, after which, step two will involve improving the energy efficiency of the system and maximizing the yield of by-products. If all goes to plan, step three will be to construct a medium scale waste processing system which is customizable and can be installed remotely.
Jacob said that with the average person using 130 kg of plastic every year, there is an urgent need for developing better ways of processing it.
“Perhaps contrary to popular opinion, plastic is an indispensable material in modern life. It is cheap, competent, lightweight, and has many benefits like maintaining food quality and safety and preventing waste,” he said.
However, “abandoned plastics endanger our marine wildlife, and have begun to enter the food chain. There is an urgent need for developing technologies to recover plastic waste.”
1. How does the system function?| A．Microwaves are used to produce plastic. |
| B．Plastic waste is heated in the microwaves. |
| C．Plastic waste is cut into pieces and buried into the soil. |
| D．Microwaves change plastic waste into biochar by heating. |
| A．Plastic consumption now is acceptable. |
| B．Plastic should be abandoned in our life. |
| C．The system of processing plastic has come into use. |
| D．Finding better ways to deal with plastic waste is urgent. |
| A．Make up for a loss in time. |
| B．Find or regain lost possession. |
| C．Extract or recycle an energy source for reuse. |
| D．Return to a normal state of health, mind or strength. |
| A．3 steps of processing plastic waste. |
| B．A way of producing plastic products easily. |
| C．A new system of breaking down plastic waste. |
| D．A program designed for plastic use in the daily life. |
【推荐3】Pioneers like Harvard social ecologist Stephen Kellert were among the first to champion modern biophilic design. Kellert believed that weaving nature into living and workspaces is critical for good physical and mental health.
Humans have evolved to gravitate towards nature, Kellert noted. His principles include access to natural light, air, water, and plants. Using materials such as wood and stone, biophilic designs such as leaf or shell patterns help humans to feel closer to nature.
Biophilic designs can be seen all over the world. Examples include the Changi Airport in Singapore, with its four-storey forest garden and world’s largest indoor waterfall fed by rainwater, and the Swedish Mirror Cube Tree House Hotel, mainly made of used plywood and a lightweight aluminum frame wrapped around a tree. Incredible biophilic homes include One Central Park in Sydney, apartment blocks featuring hanging gardens on the outside. The buildings recycle their own water and a suspended (悬浮的) motorized mirror system reflects sunlight down onto gardens below. Milan’s Bosco Vertical block is perhaps even more eye-catching with its vertical forest.
Putting biophilic design to work for society could prevent millions in healthcare costs, with one study estimating annual savings of $93 million in the US alone. Hospital design in particular has historically been influenced by access to sunlight and views of nature. Modern buildings like the Khoo Teck Puat Hospital in Singapore, with its position next to the waterfall of the Yishun Pond, are closely linked with their surroundings. The hospital channels outdoor air to cool the inside, and uses reflective sunshades to direct light into the wards to brighten them and save energy.
The aim of these designs is to emphasize the human connection to nature by integrating buildings with the local environment. But how do we bring biophilia into our homes? Start with house plants. New smart home apps can also provide sensory nature experiences such as birdsong and a projected forest canopy, helping people to carve out a restful space indoors.
But perhaps the best way to transform society with biophilic designs is to start with schools. Children learn better and feel more relaxed in biophilic settings. So the Children and Nature Network is working with schools across the US to create green schoolyards for better physical and mental health and to increase opportunities for outdoor learning.
Biophilic designers are bringing nature into classrooms through natural patterns, shapes and colors, nature photography, artwork and materials like timber and stone. Fresh air flow, green walls, and aquariums all become part of a recipe for improving health and academic success.
1. According to the passage, what does Stephen Kellert probably believe?| A．Humans’ inborn love for nature won’t be lessened. |
| B．Nature can improve people’s sense of responsibility. |
| C．Humans need to appreciate and make good use of nature. |
| D．Natural materials have taken priority in modern building designs. |
| A．They apply smart home technology. |
| B．They promote sustainable development. |
| C．They include waterfalls and gardens inside. |
| D．They use local resources to cut the cost of buildings. |
| A．Biophilic designs have greatly transformed schools. |
| B．Biophilic designs help improve students’ performance. |
| C．Biophilic designs focus mainly on students’ mental health. |
| D．Biophilic designs have moved most of the classrooms outside. |
| A．Let’s Invite Nature Inside |
| B．Live Naturally and Simply |
| C．The Best Natural Building Designer |
| D．Ups and Downs of Natural Buildings |
