1 . The deep and dark night sky is filled with wonder. Looking up at the bright stars, mysterious planets and ancient constellations (星座) brings a timeless feeling. Today, populated areas around the globe are enveloped in a type of fog that disconnects people from that amazing night sky, but reducing light pollution can help to restore the wonder.
After the sun sets, cities and suburbs across the globe are lit up with artificial lights. They glow along roads and highways and flood fields in sports stadiums. They also shine light on skyscrapers, malls, and flashing electronic signs. However, these lights negatively impact wildlife.
Artificial lighting has caused the firefly population to completely disappear in some areas, while lighthouse beams (光线) negatively impact marine species. In fact, in the US and Canada, 18 species of firefly are now classified as being threatened with a high risk of extinction in the next ten years.
Just leaving that light on affects the behavior of nocturnal pollinators (夜间传粉者) like moths, causing them to fly towards the light and not the flowers. This, in turn, negatively affects plants’ abilities to bear fruit and reproduce.
Many people are aware of many types of pollution including air, water, and land, but few realize that strong artificial lighting is harmful to all mammals, including humans. In order to make people aware of the importance of darkness, researchers wrote a world atlas (地图册) of artificial night sky brightness, which is published in Science Advances. Their findings reveal that 80 percent of the world populations live under a sky glow, with more than 99 percent of Americans and Europeans living under light-polluted skies.
Although individuals cannot control the highway and city lights, they can make a difference at home. And if everyone were to “turn off the switch”, it could help to bring back natural darkness in some areas. Light areas where light is needed and aim the light beams downwards. Try to use low-level lighting and be aware that some surfaces reflect more light into the sky.
1. What does the author mainly want to say in paragraph 2?| A．Light pollution is actually widespread. |
| B．Artificial lights bring people convenience. |
| C．The use of artificial lights should be cut down. |
| D．The night sky is beautifully lit up with those lights. |
| A．The light has been too strong. | B．The pollinators destroy them. |
| C．They are not pollinated in time. | D．They don’t receive enough light. |
| A．To popularize artificial lighting. |
| B．To call off environmental protection. |
| C．To stress the civilizations of human beings. |
| D．To bring awareness to the meaning of darkness. |
| A．Turn off highway lights. | B．Use low-level lighting. |
| C．Let light beams upwards. | D．Design energy-efficient lights. |
2 . If humans were truly at home under the light of the moon and stars, we would go in darkness happily, the midnight world as visible to us as it is to the vast number of nocturnal (夜间活动) species on this planet. Instead, we are diurnal creatures, with eyes adapted to living in the sun’s light. This is a basic evolutionary fact, even though most of us don’t think of ourselves as diurnal beings. Yet it’s the only way to explain what we’ve done to the night: We’ve engineered it to receive us by filling it with light.
The benefits of this kind of engineering come with consequences — called light pollution — whose effects scientists are only now beginning to study. Light pollution is largely the result of bad lighting design, which allows artificial light to shine outward and upward into the sky. Ill-designed lighting washes out the darkness of night and completely changes the light levels — and light rhythms — to which many forms of life, including ourselves, have adapted. Wherever human light spills into the natural world, some aspect of life is affected.
In most cities the sky looks as though it has been emptied of stars, leaving behind a vacant haze (霾) that mirrors our fear of the dark. We’ve grown so used to this orange haze that the original glory of an unlit night — dark enough for the planet Venus to throw shadows on Earth — is wholly beyond our experience, beyond memory almost.
We’ve lit up the night as if it were an unoccupied country, when nothing could be further from the truth. Among mammals alone, the number of nocturnal species is astonishing. Light is a powerful biological force, and on many species it acts as a magnet. The effect is so powerful that scientists speak of songbirds and seabirds being “captured” by searchlights on land or by the light from gas flares on marine oil platforms. Migrating at night, birds tend to collide with brightly lit tall buildings.
Frogs living near brightly lit highways suffer nocturnal light levels that are as much as a million times brighter than normal, throwing nearly every aspect of their behavior out of joint, including their nighttime breeding choruses. Humans are no less trapped by light pollution than the frogs. Like most other creatures, we do need darkness. Darkness is as essential to our biological welfare, to our internal clockwork, as light itself.
Living in a glare of our own making, we have cut ourselves off from our evolutionary and cultural heritage — the light of the stars and the rhythms of day and night. In a very real sense, light pollution causes us to lose sight of our true place in the universe, to forget the scale of our being, which is best measured against the dimensions of a deep night with the Milky Way — the edge of our galaxy — arching overhead.
1. According to the passage, human beings .| A．prefer to live in the darkness |
| B．are used to living in the day light |
| C．were curious about the midnight world |
| D．had to stay at home with the light of the moon |
| A．The night. | B．The moon. | C．The sky. | D．The planet. |
| A．provide examples of animal protection. |
| B．show how light pollution affects animals. |
| C．compare the living habits of both species. |
| D．explain why the number of certain species has declined. |
| A．The Magic Light. | B．The Orange Haze. |
| C．The Disappearing Night. | D．The Rhythms of Nature. |
3 . A new analysis of photographs from the International Space Station has identified a shift in the kind of lighting technologies that European countries are using at night to brighten streets and buildings. Researchers have found that the old warm high-pressure street lights are rapidly being replaced by cooler LED lights. The University of Exeter study, published in Science Advances, claimed that “this phenomenon is widely increasing the risk of harmful effects to ecosystems”.
LED lighting was promoted as being intended to reduce emissions, but its usage has raised energy consumption. One explanation of this is that the increase in power efficiency and the associated decrease in economic cost have driven increased demand for lighting, therefore, any efficiency gains have been counteracted by increased consumption of light.
The study also claimed that previous research into the effects of light pollution have underestimated the impacts of blue light radiation. Chief among the health consequences of blue light is its ability to reduce the production of melatonin(褪黑素)that regulates sleep patterns in humans and other organisms. Scientific studies have warned that increased exposure to artificial blue light can worsen people’s sleeping habits.
The increase in blue light radiation in Europe has also reduced the visibility of stars in the night sky, which may have impacts on people’s sense of nature. Blue light can also alter the behavioral patterns of animals including bats and moths, as it can change their movements towards or away from light sources.
David Smith, of the conservation charity Buglife, said, “Light pollution can dramatically impact animals. We should consider light from a wider biological perspective than that of just humans and focus on better quality lighting that is harmonious with our natural world. Better quality and lower levels of lighting would help save energy, and lower financial costs, while also making our environment safer for living beings. Authorities can dim the lights during night hours, and change the bandwidths(带宽值)of their LED bulbs to produce less harmful blue light.”
1. What is the phenomenon described in paragraph 1?| A．The rising demand for public lighting. |
| B．The increasing use of LED lights. |
| C．Old street lights producing lots of emissions. |
| D．Artificial lights at night wasting much energy. |
| A．Judged. | B．Maintained. |
| C．Balanced. | D．Strengthened. |
| A．Sleep patterns. | B．Eyesight. |
| C．Learning ability. | D．Social behaviors. |
| A．To stress the importance of saving energy. |
| B．To persuade authorities to avoid using LED lights. |
| C．To show ways of improving the quality of LED bulbs. |
| D．To provide suggestions on reducing light pollution. |
4 . The amount of plastic pollution in the oceans is rapidly increasing. This is problematic, as at least 700 kinds of ocean animals — including sharks, whales, seabirds and turtles — can become caught in the stuff or mistake it for a tasty snack.
While we know that some ocean animals seem to catch plastic because it looks like jellyfish or some other food sources, less research has been carried out into what plastic smells like to ocean animals. But now, a study from the University of North Carolina at Chapel Hill has found the coating (涂层) that naturally builds up on ocean plastics causes the rubbish to give off the smell of food.
The researchers took 15 turtles, each around five months old, and placed them in a lab aquarium. They then piped in smells of clean water, clean plastic, turtle food, and plastic that had been soaking in the ocean environment for five weeks. The turtles showed no reaction to the smells of clean water or clean plastic. But when facing ocean soaked plastic or turtle food, they stuck their noses out of the water and showed increased activity.
“This finding is important because it’s the first proof that the smell of ocean plastics causes animals to eat them,” said Dr Kenneth J Lohmann, who took part in the study. “It’s common to find a turtle with its stomach full of plastic materials. There are also increasing reports of sea turtles that have become ill and stuck on the beach due to their taking in plastic.”
According to the researchers, areas of the ocean with much plastic may trick turtles and other animals into thinking that there are plenty of food sources, when the opposite is true. “Once these plastics are in the ocean, we don’t have a good way to remove them or prevent them from smelling like food,” said Lohmann. “The best thing we can do is to keep plastic from getting into the ocean at all.”
1. Why is plastic pollution posing a threat to ocean animals?| A．It may mislead them as food. | B．It may eat up all jellyfish. |
| C．It may kill them with its smell. | D．It may trap 700 species of sea animals. |
| A．Sea water. | B．Clean water. |
| C．Glean plastic. | D．Ocean-soaked plastic. |
| A．Turtles seem to eat plastic because it looks like food. |
| B．Turtles have died out due to their taking in plastic. |
| C．Turtles eat plastic because it gives off the smell of food. |
| D．Turtles with their stomachs full of plastic were studied. |
| A．Keep away from the polluted ocean. | B．Maintain a plastic-free ocean. |
| C．Remove plastic from the ocean. | D．Stop people feeding turtles plastic. |
| A．Entertainment | B．Literature |
| C．Health | D．Science |
5 . For more than 60 years, the soft drink Sprite has come packaged in iconic (标志性的) green bottles. Now, that time has come to an end. Starting Aug. 1, the Coca-Cola Co., which produces Sprite, will package the lemon-lime drink in clear plastic bottles in North America, the company announced Wednesday.
By bottling Sprite in clear plastic, Coca-Cola says, the bottles will be able to be recycled more times. One goal, the company says, is to increase the supply of recycled plastic that the company can then use to make future bottles. “Taking colours out of bottles improves the quality of the recycled material,” said Julian Ochoa, the CEO of a plastic recycling company working with Coca-Cola.
Sprite’s green plastic bottles were already recyclable. But coloured plastic bottles are typically separated from clear plastic bottles during the recycling process in order to keep the recycled plastic from becoming discoloured, Coca-Cola said. The green Sprite bottles were more often recycled into things like clothes and carpeting, which are more difficult to recycle again.
Environmental organizations say the problem with Sprite bottles is not only the colour, but the material: single-use plastic. “Coca-Cola’s recent announcement is another greenwashing attempt from one of the world’s worst plastic polluters,” said Kate Melges, who leads the Plastics Project at Greenpeace, “We are in the midst of a massive (巨大的) plastic pollution crisis. This is not a useful practice.”
Coca-Cola produces more than 100 billion plastic bottles every year, according to data it provided in 2019, making it one of the world’s largest producers of single-use plastic waste.
Soft drink bottles are usually made of a type of plastic called polyethyleneglycol terephthalate (PET). PET is lightweight, food-safe and recyclable — but like other plastics, PET can take hundreds of years to decompose. “Bottles with recycled content will still be thrown away, sent to landfills, or littered,” said Matt Littlejohn of Oceana, an ocean conservation (保护) organization.
1. Why does the Coca-Cola Co. decide to use the new package?| A．To increase its production. |
| B．To cut jobs in its factories. |
| C．To make its operation greener. |
| D．To suit the needs of customers. |
| A．Worried. | B．Uncaring. | C．Positive. | D．Doubtful. |
| A．Grow up. | B．Take off. | C．Throw away. | D．Break down. |
| A．Sprite to Be Packaged in Clear Bottles |
| B．Coca-Cola Loses Its Wide Popularity |
| C．Sprite Reduces Its Product Supply |
| D．Coca-Cola Is the Largest Polluter |
6 . Even chess experts perform worse when air quality is lower, suggesting a negative effect on cognition(认知). Here’s something else chess players need to keep in check: air pollution.
That’s the bottom line of a newly published study co-authored by a researcher, showing that chess players perform objectively worse and make more suboptimal(次优的) moves, as measured by a computerized analysis of their games, when there is more fine particulate matter(颗粒物) in the air, notated as PM 2.5.
More specifically, given a modest increase in fine particulate matter, the probability that chess players will make an error increases by 2.1 percentage points, and the spectrum of those errors increases by 10.8 percent. In this setting, at least, cleaner air leads to clearer heads and sharper thinking.
“We find that when individuals are exposed to higher levels of air pollution, they make more mistakes, and they make larger mistakes,” says Juan Palacios, an economist in Sustainable Urbanization Lab.
“It’s pure random exposure to air pollution that is driving these people’s performance,” Palacios says. “Against comparable opponents in the same tournament round, being exposed to different levels of air quality makes a difference for move quality and decision quality.”
The researchers also found that when air pollution was worse, the chess players performed even more poorly when under time limitation. “We find it interesting that those mistakes especially occur in the phase of the game where players are facing time pressure,” Palacios says.
“There are more and more papers showing that there is a cost with air pollution, and there is a cost for more and more people,” Palacios says. “And this is just one example showing that even for these very excellent chess players, who think they can beat everything, it seems that with air pollution, they have an enemy who harms them.”
1. What effect does air pollution have on chess players?| A．They make fewer good choices. | B．They perform subjectively worse. |
| C．They suffer body discomfort. | D．They lose all games with computers. |
| A．Magic. | B．Process. | C．Range. | D．Balance. |
| A．His appeal for attention to chess players. |
| B．His concern about air pollution. |
| C．An example of chess players’ performance. |
| D．Approaches to dealing with air pollution. |
| A．Air pollution is a tough enemy chess players face. |
| B．Chess players make more and more mistakes. |
| C．There is a cost with air pollution for more people. |
| D．Chess players perform poorly under time limitation. |
7 . We all have an idea about the common types of environmental problems. However, light pollution may be a new term to many of us. But, the fact is that it does affect mankind, other living forms and the environment as a whole.
What is light pollution? It presents all forms of misused man-made light. The obvious cause of light pollution is the use of outdoor lighting products improperly. It can be office lighting, car headlights, station lights, streetlights and many more.
Light pollution is harmful to both animals and plants. Upon studies, it is found that obvious effects are observed in the behaviour of animals that are active at night. Needless to mention, bright light at night makes it difficult for these animals to hunt, wander and perform their regular activities. Light pollution is directly or indirectly responsible for causing several diseases. Its effects are related to disturbance in the physical rhythm (节奏). It contributes to risks of developing cancerous cells. So, it’s nothing less than a threat to human health.
You have already seen the negative effects of light pollution on animals and human health. Apart from this, the actual cost of misused light is about millions of dollars every year. It also leads to the release of greenhouse gases and global warming. After all, coal or gas is used for producing electricity.
While outdoor lighting and using man-made lighting products are part of our modern lifestyle, some simple ways will surely help in reducing light pollution. For example, while installing (安装) outdoor lighting, make sure that they are pointed downwards. Also, use only the required lighting equipment for both home and offices. Believe it or not, many people living in the urban areas cannot view clear sky and stars at night. Let’s contribute our part in reducing the pollution.
1. What can we learn about light pollution?| A．It has little effect on plants. |
| B．It contributes to most cancers. |
| C．It is a negative fruit of light technology. |
| D．It affects animals’ behavior during the day. |
| A．It increases the temperature at night. |
| B．It creates clouds in parts of the Earth. |
| C．It stops the release of greenhouse gases. |
| D．It is related to the burning of coal and gas. |
| A．Forbid the use of outdoor lighting. |
| B．Use clean energy to produce electricity. |
| C．Avoid unnecessary lights at home and offices. |
| D．Reduce money spent on light in urban areas. |
| A．Citizens should be banned to install outdoor lighting. |
| B．Only simple ways can help reduce light pollution. |
| C．There is no clear sky or stars over the urban areas. |
| D．Light pollution needs to be dealt with urgently. |
8 . Plastic waste is choking our planet. People are trying to help fix it by recycling, but their efforts aren’t going far enough. Even when plastic producers are held responsible and attempt to solve the problem, it doesn’t always go smoothly. Such has been the case for the company Torus Pak, which produces novel packaging for frozen meals on a large scale.
Like many other black plastic products, the Torus Pak packages used a carbon-based pigment (颜料). This pigment troubles the sorting technology which is used by many recycling facilities, so black plastic usually ends up being thrown away because the machines can’t identify it. Now the company is midway through the complex process of phasing out that pigment and switching that pigment to one that doesn’t use carbon.
But that doesn’t mean the problem is solved, for the recycling rate at the waste facility itself is not encouraging. Your discarded plastic may end up in a landfill even if you send it to be recycled. Worldwide, only about nine percent of all the plastic waste has been recycled, which amounts to less than 600 million tons out of over 6 billion. While one might assume the proportion of plastic being recycled is on the increase due to improved tech and increased public awareness of environmental protection, it’s actually become even lower in many places in recent years.
“The world wasn’t always flooded with single-use plastic products,” said Lisa Ramsden, senior plastic campaigner for Greenpeace USA. “We know how to live without them. We’ve just got used to a convenience culture that relies so heavily on them.”
The solution is obvious. To get out of this habit, we should stop using so much plastic, starting with many of the items we use just once for a few minutes. Companies need to shift toward using more refillable and reusable containers, and packaging made from materials that are less harmful to the environment. Governments must mandate (强制执行) such changes — a goal we’re now finally inching closer to every day.
1. What is the problem with the Torus Pak packages?| A．They are expensive for customers. |
| B．Their pigment is hardly appealing. |
| C．They are hard to define as “recyclable”. |
| D．Their production process is very complex. |
| A．The reason for recycling plastic waste. |
| B．The outcome of recycling plastic waste. |
| C．The potential of recycling plastic waste. |
| D．The objective of recycling plastic waste. |
| A．Making some stricter laws. |
| B．Reducing the use of plastic products. |
| C．Advancing the technology of recycling. |
| D．Setting some higher environmental goals. |
| A．Recycling fails to solve plastic pollution |
| B．A company contributes a lot to recycling |
| C．Great changes happen in recycling plastic |
| D．Plastic pollution is increasingly worsening |
9 . A new study suggests classic paintings by well-known Impressionists Joseph Turner and Claude Monet may have been influenced by air pollution during the Industrial Revolution.
The study, published in Proceedings of the National Academy of Sciences by authors from Harvard and Sorbonne universities, analyzed 60 oil paintings by Turner from 1796 to 1850 and 38 paintings by Monet from 1864 to 1901.
Scientists don’t know exactly how polluted the cities were during that time for lack of data. However, researchers say examining the works of Turner and Monet can give a picture of long-term environmental change with the air pollution.
In particular, researchers said changes in local sulfur dioxide emissions from burning coal may explain changes in the colour contrast and intensity of Tuner, Monet, and others’ works, even after taking into account the artistic trends and subject matter of the time.
Scientists successfully measured painters’ representation of nature, focusing on differences in local weather patterns which influenced colour in works painted in different parts of Europe. Paintings’ done in Britain generally feature a paler blue sky than other works in other parts of the continent. Generally, artists can historically accurately represent their environment, so Turner and Monet were chosen because they are famous for their landscape and cityscape paintings and also because they were active during the Industrial Revolution, when air pollution grew at a rate never seen before.
Additionally, researchers say that as the air in London and Paris became more polluted, the cities would appear hazier to the eyes as well as in photographs. By comparing the paintings of Turner and Monet to pictures from the era, they were able to determine the artists were at least partly influenced by the change in emissions.
1. What did the researchers find in the works of Turner and Monet?| A．Change in subject matter. | B．Air pollution at that time. |
| C．Social trends of the period. | D．Development of photography. |
| A．referring to relevant historical records |
| B．comparing the paintings of Turner and Monet |
| C．relating the paintings to the air conditions then |
| D．analyzing the data during the Industrial Revolution |
| A．European artists preferred landscape paintings. |
| B．Scientists focused on studying weather patterns. |
| C．Turner and Monet intended to present pollution. |
| D．Britain suffered from air pollution most in Europe. |
| A．To inform people of a new discovery. |
| B．To instruct people to appreciate paintings. |
| C．To introduce the Industrial Revolution. |
| D．To call on people to protect the environment. |
10 . A strong sense of smell is a key component of a healthy and enjoyable life. Yet our sense of smell is in decline as a result of an unnoticed threat to our health: air pollution.
Scientists are finding that anosmia, a loss of the sense of smell, is becoming a widespread problem among people of all ages exposed to PM2. 5 pollutants constantly, which are tiny particles (微粒) that can enter our bodies with every breath we take.
The reason, they suggest, is that the olfactory bulbs (嗅球), which are located in our noses and packed with nerve endings, are affected by exposure to air pollution. The tiny particles cause illness either in the bulbs themselves or in the brain, impacting our sense of smell over time, “Our data show the risk of developing anosmia with constant particulate pollution is 1.6 to 1.7 times higher,” says Ramanathan, a doctor at the Johns Hopkins School of Medicine, America.
Ramanathan is an author of a recent study of nearly 2,700 patients, a fifth of whom had anosmia despite many of them being non- smokers.’ When he and his colleagues looked into the backgrounds of the affected patients, they found most of them lived in neighborhoods with significantly higher levels of air pollution.
The findings prove other studies with similar findings. One of these studies, conducted in a town in Italy, found that more than 200 teenagers and young adults between the ages of 15 and 25 suffered olfactory damage as a result of exposure to NO2, a common component in traf-fic emissions. “This is alarming as olfactory loss affects patient safety, well-being, and it is a predictor of poor health,” says Ramanathan.
Yet the loss of a sense of smell is a condition that is often overlooked though it can bring about numerous health problems. A sense of smell is linked to memory as well and life is a lot less fun without it. “People don’t remember what the pastry that they ate in childhood looked like, but they remember what the shop smelled like,” says Ramanathan.
1. How air pollution negatively influences our sense of smell!?| A．It blocks the inside transport of information. |
| B．It prevents the nerve system functioning normally. |
| C．It leads to the brain requiring more time to respond. |
| D．It results in diseases in the olfactory bulbs or the brain, |
| A．Air pollution can rob us of our sense of smell. |
| B．Smokers are more likely to suffer from anosmia. |
| C．Traffic emissions contribute a lot to air pollution. |
| D．Exposure to PM2.5 pollutants occasionally is harmless. |
| A．Confusing and astonishing. | B．Complicated but treatable. |
| C．Critical and concerning. | D．Disturbing but temporary. |
| A．A travel brochure. | B．A science website. |
| C．A biology textbook. | D．An art magazine. |
