About a billion birds die from flying into buildings each year in North America. Suspicions have been that birds may regard the open areas behind glass as safe passageways. Or they may mistake the reflected trees for the real thing.
Researchers would like to reduce collisions, which requires a solid understanding about what makes a bird more or less likely to die by crashing into a building in the first place.
“There was relatively little known at a broad scale. Previous studies were at one small study site.'' Jared Elmore, a graduate student in natural resource ecology and management at Oklahoma State University. So he and his colleagues used a previously created data set of building collisions for birds at 40 sites throughout Mexico, Canada and the U.S.
The first finding was obvious: bigger buildings with more glass kill more birds. But the details were more remarkable. "We found that life history predicted collisions. Migrants(候鸟), insect-eaters and woodland-inhabiting species collided more than their counterparts(同类).”
Most migratory species travel at night, when lights near buildings can distract or disorient(使迷失方向)them. And Elmore thinks that insect-eating birds might be attracted to buildings because their insect prey(猎物)is attracted to the lights. He suspects that woodland species get tooled by the reflections of trees and bushes in the windows. The results are in the journal Conservation Biology.
By understanding which birds are more likely to collide with buildings, researchers can perhaps determine the best way to adapt buildings, or their lighting, to help prevent such accidents. And by knowing risks, along with migration timing and behavior, building managers can better predict when birds are at their greatest danger - and improve lighting strategics accordingly.
Elmore's next project will use radar to help predict bird migrations. " I think that would maybe go a long way in terms of providing information to people, to the public, to building managers, on when they can get the most benefit in terms of lights-out policies."
1. What is the possible reason for birds' crashing into buildings?A.They didn't see the buildings. |
B.They took reflections for reality. |
C.They assumed the windows to be open. |
D.They considered buildings as safe routes. |
A.It created a new data set. |
B.It went beyond national borders. |
C.It covered a wider range of sites. |
D.I’ll studied some specific bird species. |
A.Migratory species travel at night. |
B.Birds tend to be misled by glasses. |
C.Bigger buildings cause more collisions. |
D.Birds living habits give rise to collisions. |
A.Adjust the lightening system. |
B.Attach radars to each building. |
C.Adopt strict lights-out policies. |
D.Ban using glasses on buildings. |
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【推荐1】Many kinds of turtles (海龟) found in the Philippines are endangered. But now, the turtles have one less threat. Many people who used to collect their eggs to eat or to sell are now working to keep turtles safe.
Those people are called poachers (偷猎者). Now, however, protection organizations are teaching former poachers how to safely collect the eggs and protect them before they hatch (孵化). The people who do this are paid about 37 cents per egg. That is four times more than they would earn from selling them illegally.
One of the former poachers is Johnny Manlugay. “I’ve learned to love this work,” he said, adding that he did not know it was illegal to eat turtle eggs and their meat. He now collects the eggs carefully and brings them to a group called Coastal Underwater Resource Management Actions (CURMA), which takes the eggs and puts them under the sand in a safe place. When the baby turtles hatch, they are directed to the water.
The turtles are called “pawikan” in the local language. They are at risk not only from poachers, but also climate change and habitat loss.
Carlos Tamayo is one of CURMA’s leaders. “We talked to the poachers, and it turned out poaching was just another means for them to earn a living,” he said. “They had no choice.”
Cabagbag is over 40 years old. His wife and seven-year-old son sometimes help him collect turtle eggs. Since October, they have taken over 1,000 eggs to CURMA. Cabagbag said that once he received training and learned that the turtles were endangered, he stopped poaching.
When the baby turtles hatch, many visitors come to watch them run down the beach and into the water. Cabagbag said seeing the turtles get safely into the water brings him a feeling of joy.
1. What is one of the ways of the organizations to protect turtles?A.Teaching former poachers to collect and protect turtle eggs. |
B.Getting the locals to receive more education. |
C.Encouraging the locals to develop tourism. |
D.Helping raise the locals’ earnings. |
A.He helps place the eggs under the sand. |
B.He encouraged his family to collect the eggs. |
C.He has taken more than 1,000 eggs from CURMA. |
D.He once lacked the awareness of protecting turtles. |
A.Poachers. | B.Climate change. | C.Ocean pollution. | D.Habitat loss. |
A.Turtles Are at Risk from Climate Change |
B.Former Turtle Poachers Are Now Protectors |
C.Turtle Population in the Philippines Is Changing |
D.CURMA Is Offering Training of Turtle Protection to Farmers |
【推荐2】For the last three years, a man in India has been living a real-life daily nightmare (噩梦). Every time he walks out of his house, he gets attacked by a group of crows. The strange thing is that the birds only aimed at him.
Shiva Kewat, a daily wage laborer from Sumela village, says his troubles with crows began three years ago. One day, as he was walking on the street, he noticed a crow chick trapped in iron netting. Despite his efforts to help the small bird escape, it died in his hands. Some of the crows must have seen the scene and believed that he killed it, because they’ve been attacking him ever since. Kewat has to carry a stick with him. He just waves the stick around to drive them off.
Kewat said that he didn’t really take the crows’ attacks seriously until he was aware that he was the only target (目标) of the birds and that no one else had ever had a problem with them. And as word of his troubles with the blackbirds spread in and around the village, people started gathering at his house every day just to see if he’d get attacked. Some found it amusing, while others described the attacks as “sudden and frightening”.
Professor Ashok Kumar Munjal, who studies bird behavior at Barkatullah University in Bhopal, said that crows have a very sharp memory and tend to recollect those who have wronged them. While their idea of revenge (报仇) may not be as complex as ours, they do tend to conduct either single or group attacks against humans who hurt them.
1. What has been causing inconvenience to Kewat in the past three years?A.He’s been suffering from crow droppings. | B.He’s been having nightmares during sleep. |
C.He’s been under attack from crows. | D.He’s been the only victim of all bird attacks. |
A.His cruel killing of a crow chick. | B.The act of disrespect to crows. |
C.His refusal to save a trapped crow chick. | D.The misunderstanding between him and crows. |
A.the crows attacked nobody but him | B.he was attacked more and more frequently |
C.more and more crows joined in the attacks | D.people started gathering at his house every day |
A.Ignore. | B.Remember. | C.Imitate. | D.Reject. |
【推荐3】A ten-year-old sperm whale(抹香鲸)was found dead on a beach in Scotland.A necropsy(尸检)revealed that nearly 100 kilograms of plastic and other trash had formed clumps(硬块)in its digestive system.The tragedy quickly made headlines.Why would a top predator in the ocean eat gloves,rope,and plastic cups?
Conventional wisdom suggests that marine animals eat plastic because it is there and they don't know any better.It is true that plastic may smell like food to some of them.But that doesn't explain why only certain types of whales-deep-diving toothed whales,such as sperm whales and pilot whales-turn up dead on beaches with stomachs full of plastic.
It's possible,says Savoca,that plastic trash sounds like food to toothed whales.These species
hunt deep in the ocean,sometimes nearly 500 meters below the surface,where it's pitch black(漆黑)。They use echolocation(回声定位)to hunt for food,typically squid(乌贼)。
By contrast,baleen whales(须鲸),including humpbacks and blue whales,have natural filters(过滤器)for their food.Baleen,the brush-like filter-feeding system they have in place of teeth,as well as their narrow throats,keeping them from swallowing anything much larger than the krill(磷虾群)that forms the basis of their diet.That could help explain why baleen whales are not ending up with plastic filled stomachs.
Fifty years ago,there was almost no plastic in the ocean.The lifespan of a large whale can be
twice that long.In the lifetime of a single whale,we went from an ocean with no plastic to hundreds of thousands of tons of it.Plastic comes on top of other factors affecting life in the ocean-climate change,overfishing,shipping traffic,and noise pollution."it's a real shame because their lives are challenging enough even without the additional pressure we put onto them,"says Savoca.
1. What does Paragraph 2 mainly talk about?
A.That plastic smells like food to toothed whales. |
B.That marine animals started to eat plastic decades ago. |
C.That a number of toothed whales are found dead on beaches every year. |
D.That conventional wisdom about why marine animals eat plastic doesn't apply to all whales. |
A.They don't feed on krill. |
B.They live in the dark depths of the ocean. |
C.They are not born with brush-like filter-feeding systems. |
D.They don't determine the location of their food with their eyes. |
A.Whales have a longer lifespan than humans. |
B.Plastic has a negative effect on climate change. |
C.Great changes have taken place in the ocean in the past 50 years. |
D.Plastic pollution has worsened already serious issues affecting marine life. |
A.Different diets,different fates |
B.Silent killers in the ocean |
C.Plastic trash in-the ocean |
D.Saving whales |
【推荐1】Earth Day is an annual environmental event during which people celebrate the earth's natural environment and promote environmentally healthy practices.
There is some disagreement as to when, exactly, Earth Day is.
Early Earth Day celebrations were used to highlight growing environmental problems and to suggest ways of solving these problems.
As Earth Day has become more well-known, more and more nations, companies and people have begun actively participating in the event. It is not uncommon to see companies releasing information about major environmentally friendly breakthroughs on Earth Day, for example, and for nations to pick Earth Day as a target date for emissions reductions and other environmentally friendly measures.
A.Issues were brought up on Earth Day. |
B.Many people celebrate Earth Day on April 22. |
C.So it is a day that should be paid more attention to. |
D.Some people think celebrating Earth Day is important. |
E.Many cities around the world hold Earth Day celebrations. |
F.The day also provides an excellent stage for environmental activists. |
G.Originally, Earth Day was accompanied with teach-ins and other events. |
The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center. However, since it kept orbiting around the Earth without any consequences, scientists became increasingly comfortable abandoning(抛弃) things that no longer served any useful purpose in space.
It is estimated (估计)that there are now over 500,000 pieces of man-made trash orbiting the Earth at speeds of up to 17,500 miles per hour. The junk varies from tiny pieces of paint chipped off rockets to cameras, huge fuel tanks, and even odd items like the million-dollar tool kit that astronaut Heidemarie Stefanyshyn Piper lost during a spacewalk.
The major problem with the space trash is that it may hit working satellites and damage traveling spacecraft(飞船). Moreover, pieces of junk may collide(碰撞) with each other and break into pieces which fall back to the Earth. To avoid this, scientists have invented several ways for clearing the sky. Ground stations have been built to monitor larger pieces of space trash to prevent them from crashing into working satellites or space shuttles. Future plans include a cooperative effort among many nations to stop littering in space and to clean up the trash already there.
1. What was the first piece of man-made space trash?
A.A camera. | B.A tool kit. |
C.A fuel tank. | D.A broken satellite. |
A.It no longer served any useful purpose. |
B.It was millions of miles away from the Earth. |
C.It did not cause any problems. |
D.It was regarded as similar to comets and stars. |
A.It is huge, heavy machines. |
B.It never changes position. |
C.It floats slowly around the Earth. |
D.It may cause problems for space shuttles. |
A, Scientists have cleaned up most of the trash.
A.Large pieces of space trash are being closely watched. |
B.Many nations have worked together to stop polluting space. |
C.Ground stations are built to help store the trash properly in space. |
【推荐3】Experts recently suggested that teens should start having early bedtimes. Before you think it as a habit suited only for young kids, consider that there are serious advantages in being well-rested. And now, even more research suggests that putting phones away before going to sleep is important to teens’ well-being.
A new study from Seton Hall University School of Health and Medicine Science found that 62 percent of kids used their smart phones before bed, and it’s causing less sleep and poor performance in school.
Those teens who text before bedtime tend to go to sleep later, and get up later in the morning. Such behavior can be associated with mental health illnesses like depression or anxiety. Besides, once teens do receive a text, experts found, they tend to respond right away. Then the text conversation continues — leading to an even later bedtime.
The study’s co-author Dr. Peter Polos says this leads to excessive stimulation (过度刺激) at night. Light from electronic devices can prevent the secretion (分泌) of melatonin — a hormone (荷尔蒙) that promotes sleep, which makes sleep difficult in the face of overuse of smart phones at night. It’s true! More screen time means less sleep time; other studies have suggested the same idea.
As for a final piece of advice, Dr. SushanthBhat says, since getting the proper amount of sleep is very important for brain development and learning in the teenage years, our study should encourage parents and guardians (监护人) to limit the smart phone usage of kids at night. Keep in mind that teens aren’t the only ones addicted to their phones! Adults can also benefit from setting a tech curfew (宵禁) for themselves. After all, kids learn by example!
1. What is the text mainly about?A.How to promote sleep. |
B.The disadvantages of phone usage before bed. |
C.The advantages of going to bed early. |
D.How kids learn from their parents. |
A.Kids having text conversations before bed. |
B.Kids putting their phones away at night. |
C.Kids studying their lessons hard at school. |
D.Kids exercising with friends after school. |
A.wake people from a sleep | B.help people fall asleep |
C.lead to later bedtimes | D.make sleep difficult |
A.learn from their kids |
B.get rid of smart phones |
C.try to benefit from hi-tech development |
D.set a good example to their kids |
A.lesson plan | B.book review |
C.science report | D.personal diary |
【推荐1】Last week, four speakers shared, at the Skoll World Forum, why they find themselves smiling in spite of everything.
Ava Duvernay
I don’t believe that all of the problems are happening to us. I believe they’re happening for us. Lonnie Holley is a wonderful artist who uses waste material to create artworks. He says we shouldn’t think of it as garbage. Rather, it can be turned into something new.
Mahali Hlasa
I love my family. I was brought up in a very close family. Of course we fight, but we also laugh together. We share all the joys and the pains and find comfort in that. When I want to be happy, my family is always there for me. With these people who I love, I know that I am safe.
Rodrigo Paris Rojas
I find optimism in villages and slums (贫民窟). That’s because despite the difficult environment around them, they still come together and celebrate at different times of year. They bring so many smiles and so much joy. When I see that, I say, “I have more money and more education than them, but they’re way happier than me. ”So I find optimism in those ways of celebrating life and building community.
Edgard Gouveia Jr.
I’ve found optimism among kids — Black, white, poor, rich. They play. They enjoy life. They connect. It’s only later that they learn about differences and start to behave differently. But when I see how they interact as children, it’s all about playfulness. Even during war times or in very poor neighborhoods, I see kids finding ways to create joy among themselves.
1. What is Lonnie Holley?A.An artist. |
B.A consultant. |
C.A teacher. |
D.A waste collector. |
A.Charity and voluntary work. |
B.Positive thinking and creativity. |
C.Money and comfortable life. |
D.Family life and close relationship. |
A.Don’t send children to schools. |
B.Try to grow up as slowly as possible. |
C.Being playful is still important in adult life. |
D.It is necessary to help kids affected by wars. |
【推荐2】Conservation experts are calling on the prime minister to commit to protecting nature. They say the past decade has seen far too little action, with England remaining one of the world’s most nature-depleted countries. The letter to Boris Johnson was headed by Prof Sir John Lawton, who chaired a review of wildlife sites in 2010. The Making Space for Nature panel advocated “bigger, better and more joined up spaces for nature”. Ten years on, there is a need for renewed action, the experts say, highlighting three overarching areas: better protection and management of wildlife habitats; scaling up efforts to restore wild areas; bringing nature to people.
Prof Lawton writes: “Nearly half of our species are in decline and about a quarter of our mammals are threatened with national extinction. These losses represent a decline in resilience of the ecosystems upon which we depend and a loss of experience and joy: there are too few places left where a child can walk through a cloud of butterflies or sit amongst a rainbow of flowers.” The letter is signed by members of the original panel, including Dr Peter Brotherton, director of science at the government agency, Natural England.
In a second letter, a group of more than 25 nature charities urged the leaders of the four devolved nations to commit to a new era for nature in the UK. They want the UK to lead the charge for new targets and concerted global action to protect nature, following a “lost decade” of nature conservation.
The UN’s latest global biodiversity report shows that the world has failed to fully meet any of its targets to halt damage to natural habitats. The report from The Convention on Biological Diversity(CBD)says only six of 20 goals were partially met over the last decade. The head of the CBD, Elizabeth Maruma Mrema, said that while some good things were happening, the rate of biodiversity loss was unprecedented in human history and it showed the pressures were intensifying. The announcement follows a report by WWF and the Zoological Society of London that shows animal populations globally have plunged by 68% in the last 50 years.
Richard Benwell, CEO of Wildlife and Countryside Link, said the failure to meet these targets is a wake-up call for nature that our leaders must answer before it is too late. He added: “We are calling on the prime minister to help start a new era for wildlife, fighting for a strong global target and worldwide action, matched with a clear legal commitment, increased investment and ambitious programmes to restore nature at home.”
1. We can learn from the first two paragraphs that________.A.Prof Lawton writes the letters to the prime minister |
B.it needs ten years to make space for nature in three areas |
C.the children enjoy a cloud of butterflies and a rainbow of flowers |
D.the government and nature charities are both involved in the calling |
A.There has been little action in the past decade to protect nature. |
B.It’s more difficult for the ecosystems to recover. |
C.Half of the animal species went extinct. |
D.The lack of places for children to get close to nature. |
A.Animal populations have declined by 68%. |
B.More than half of the goals to protect habitats are achieved. |
C.Biodiversity loss is at an alarming rate. |
D.The measures taken by the world have reduced the pressure. |
A.Nature restoration is urgent in the UK. |
B.Experts call for a new era for wildlife in the UK. |
C.The UK needs biodiversity. |
D.The situation of wildlife protection in the UK is not optimistic. |
【推荐3】It’s easy to think festivals are just about drinking and dancing, but festivals are also representatives of what a certain way of life thinks, the way they express themselves. I’ve been to over 60 festivals in 22 different countries, and I still want to experience more. One of the main reasons I enjoy going to international festivals so much is the fact that they are a microcosm of what they represent. Festivals are an opportunity to see as much as possible in a weekend into worlds so different, or even familiar, of my own.
Festivals are a fascinating insight into a group of individuals with a common understanding and the world they are living in. This is also one of the reasons I enjoy international festivals.
I ticked off a huge bucket list festival in Lake of Stars Festival in Malawi a few years ago. I was unwell and not my usual party self, but, it gave me the opportunity instead to sit and listen to the local poets. Through their poetry they enlightened me to some of the issues of the day—calling out their “fat government” and covering everything from housing, to relationships, to the nominal(名义上的) opportunities.
The importance of celebrating festivals abroad isn’t just to gather with your “tribe”. What I learned in a few poems at Lake of Stars Festival were fascinating insights into modern social issues and the Malawi of the present, which I would have had to dig deep to find out. And I probably wouldn’t have bothered to, to be honest.
Even if only for a weekend, what I learned there from the poets and artists gave me a better understanding of what life was like in Malawi.
You never know what you’re going to learn when you visit a new festival. That’s all part of the fun and expectation.
Comedy makes current social issues fun, music makes them melodic(有旋律的), while poetry makes them considered and heartfelt. Festivals bring you them all.
1. What does the underlined word “microcosm” in paragraph 1 probably mean?A.Different view. | B.Mixed reaction. |
C.Small world. | D.Rare opportunity. |
A.He likes having fun with others. |
B.He can learn about the world. |
C.He expects to get job opportunities there. |
D.He enjoys tasting a variety of drinks and food. |
A.Instructive. | B.Informal. | C.Commercial. | D.Huge. |
A.The author’s wishes. | B.The greatness of poets. |
C.The differences between festivals. | D.The significance of festivals. |