1 . Plastic is everywhere, from the Arctic ice to vital organs in the human body. In fact, previous estimates suggest that the average person swallows a credit card-worth of microscopic plastic particles(颗粒) every week. But new research shows that this could actually be an understatement.
Microplastics are plastics smaller than 5 millimeters, found in industrial waste, beauty products, and formed during the degradation of larger plastic pieces. Over time, they break down into even smaller nanoplastics. These tiny particles can pass through our intestines and lungs into our bloodstreams, reaching vital organs like the heart and brain.
While the idea of eating plastic is unsettling in itself, the major concern here is that these plastic particles contain chemicals that can interrupt our body’s natural release of hormones, potentially increasing our risk of reproductive disorders and certain cancers. They can also carry toxins(毒素) on their surface like heavy metals.
In the past, researchers have shown bottled water can contain tens of thousands of identifiable plastic fragments in a single container. However, until recently, only the larger microplastics were detectable with available measuring tools, leaving the area of nanoplastics largely a mystery.
Using Raman microscopy (显微镜学), capable of detecting particles down to the size of a flu virus, the team measured an average of 240, 000 particles of plastic per liter of bottled water, 90 percent of which were nanoplastics, a revelation 10 to 100 times larger than previous estimates.
These plastics likely originate from the bottle material, filters used to “purify” the water, and the source water itself. “It is not totally unexpected to find so much of this stuff, ” the study’s lead author, Columbia graduate student Naixin Qian, said in a statement. His team hopes to expand their research into tap water and other water sources to better inform our exposure to these potentially dangerous particles. “The idea is that the smaller things get, the more of them I reveal, ” he added.
1. What is the primary focus of the new research?| A．The presence of plastic particles. | B．The use of plastic in everyday products. |
| C．The detection methods for microplastics. | D．The potential risks of nanoplastics to human. |
| A．Finding the source of plastic particles. | B．Helping to cure the deadly flu virus. |
| C．Detecting the smaller plastic particles. | D．Improving the quality of bottled water. |
| A．To focus on areas with higher plastic pollution. |
| B．To be aware of the dangerous particles in daily life. |
| C．To further measure the types of particles in tap water. |
| D．To detect the smaller plastic particles in industrial areas. |
| A．Skeptical. | B．Objective. | C．Conservative. | D．Positive. |
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 . In today’s world, almost everyone knows that air pollution and water pollution are harmful to people’s health. However, not all the persons know that noise is also a kind of pollution, and that is harmful to human health, too.
People who work and live under noisy conditions usually become deaf. Today, however, scientists believe that 10 percent of workers in Britain are being deafened by the noise where they work. Many of the workers who print newspapers and books, and who weave (织) cloth become deaf. Quite a few people living near airports also become deaf. Recently it was discovered that many teenagers in America could hear no better than 65-year-old persons, for these young people like to listen to pop music and most of pop music is a kind of noise. Besides, noise produced by jet planes or machines will make people’s life difficult and unpleasant, or even make people ill or even drive them mad.
It is said that a continuous noise of over 85 decibels (分贝) can cause deafness. Now the governments in many countries have made laws to control noise and make it less than 85 decibels.
In China, the government is trying to solve not only air and water pollution problems but also noise pollution problems.
1. What kind of people go deaf easily go deaf?| A．People who work and live under noisy conditions go deaf easily |
| B．People who go shopping go deaf easily |
| C．People who exercise every day go deaf easily |
| D．People who like to do housework go deaf easily |
| A．air pollution | B．water pollution | C．noise pollution | D．world pollution |
| A．less than 85 | B．less than 65 | C．about 65 | D．more than 85 |
| A．they are working in noisy places | B．they often listen to pop music |
| C．they live near airports | D．they are too busy to listen to others’ talk |
| A．only the air pollution | B．only the air and water pollution |
| C．only the water pollution | D．the air, water and noise pollution |
4 . Naturalist Enzo Suma, who is now 40, lives in Puglia, a region in southern Italy whose long coastline faces the Adriatic Sea. Floating waste accumulates in this relatively enclosed part of the Mediterranean, unlike the open ocean, where the waste tends to be spread over a vast area. Feeling concerned about that, Suma makes it a habit to pick up the washed-up waste along the shore, especially after big winter storms.
One day, Suma was walking along the beach near his home when he discovered a bottle of Coke. Suma noticed on the bottle that the price, clearly printed on the bottom, was in lire, a currency (货币) that hadn’t been used in Italy since it was replaced by the euro in 2002. Could a plastic container have well survived in the Mediterranean, he wondered, for about two decades?
That led him to founding the Archeoplastica museum. It has a collection of about 500 unique pieces recovered from Italian shores and the Coke bottle is the first one of them. All collection demonstrates the unsettling life force of plastic waste in the environment. “Seeing that a product people may have used 30, 40, or 50 years ago remains still unchanged, you’ll feel different. It’s a great shock,” Suma said to a reporter. So Suma often exhibits selected pieces from the Archeoplastica collection at local schools around his hometown of Ostuni.
“The playful side of the work allows you to arrive at the less beautiful side of things,” Suma acknowledged. “Plastic is a kind of useful substance. But it’s unthinkable that a water bottle, made from a material designed to last so long, can be used for just a few days—or even minutes—before becoming garbage. Clean the beaches. Clean the oceans. Recycle. But if we are still throwing out plastics, none of those are going to be long-term solutions.”
1. What’s Suma’s concern about his living place?| A．Its long coastline is disappearing. | B．Big storms frequently hit the area. |
| C．Floating waste spreads over a vast area. | D．The waste pollution on shore is worsening. |
| A．They have a history of more than half a century. |
| B．They were quite valuable before turning into waste. |
| C．They’re more like educational exhibits than garbage. |
| D．They have stronger life force than ordinary plastic products. |
| A．Creative, devoted and socially responsible. | B．Enthusiastic, ambitious and adventurous. |
| C．Generous, cautious and humorous. | D．Curious, efficient and playful. |
| A．The birth of plastics has greatly served humans. |
| B．The key to tackling the plastic pollution is to stop littering. |
| C．The plastic problem can be solved by cleaning and recycling. |
| D．People should be more aware of the powerful functions of plastics. |
5 . Have you ever stopped to consider how empty the world would look without trees? Below are five of the top benefits that trees provide.
Trees help you heal faster. Natural environments, including forests, help you reach a more positive state of mind.
Trees reduce air pollution and improve respiratory (呼吸的) health. Trees take in many harmful pollutants from our environment.
Trees provide oxygen. Trees are like the lungs of our Earth. They supply us with oxygen while taking away our carbon dioxide and ask for nothing in return. A single tree can provide enough oxygen for four people.
Trees cool cities. Trees cool things down by offering shade and through evapotranspiration (蒸腾作用).
| A．Trees cheer you up! |
| B．Trees help reduce the effects of climate change. |
| C．This, in turn, affects your overall state of wellness. |
| D．In fact, large forests can influence regional weather patterns. |
| E．So plant more trees around your home if you want to feel cooler. |
| F．And of course, trees also provide plenty of oxygen for birds and other wildlife. |
| G．For example, in the US, forests remove 17.4 million tons of pollution per year. |
6 . A new study finds too much light at night can cut the number of seeds a plant produces. Researchers put up street lights in Swiss meadows, far from any real street. The setup mimicked (模拟) urban light pollution. In these now-light-polluted fields, flowers had 62 percent fewer night visitors—insect pollinators(传粉者)—than the flowers in
Cabbage thistles are the most common flowers in these meadows. Fewer insect visitors at night could mean less pollen (花粉) pollinated from plant to plant (the first step in producing seeds). “For the thistles, daytime pollinator visits didn’t make up for this loss at night,” says Eva Knop, an ecologist at the University of Bern in Switzerland. Overall, night-lit plants produced one-eighth fewer seeds than plants that got full nights of darkness did.
“Light pollution might affect a whole network of plants and their pollinators,” Knop and her colleagues now suggest. Indeed, night pollination is not just a lonely business for a few special plants. There are lots of links between production of pollen by night and that by day. Plants with a lot of night visits are often very busy by day, too. Light at night that decreases seed numbers could over time mean fewer new plants. And fewer plants could mean less food and shelter for daytime insects. Therefore, a lot of pollinators working day and night shifts could be affected, which is what Knop worries about.
The new study is the first to show how artificial light affects plants’ ability to produce seeds. The test is also unusual because it considers all kinds of insect pollinators instead of focusing only on night-flying insects. The researchers paid special attention to the cabbage thistle, but they also mapped which kinds of insects visited other plants by day or night.
1. Why were street lights put up in the meadows?| A．To copy light pollution. |
| B．To promote urbanization. |
| C．To accelerate plant growth. |
| D．To attract insect pollinators. |
| A．They attract only night visitors. |
| B．They grow slowly during the night. |
| C．They are the most common Swiss flowers. |
| D．They rely on insects to help produce seeds. |
| A．sight | B．numbers | C．growth | D．food and shelter |
| A．Plants attract more insects due to light pollution. |
| B．Night-flying insects matter more than daytime ones. |
| C．Light pollution may affect plants seed numbers. |
| D．Researchers found ways to protect the insects. |
7 . Blue Planet Ⅱ’s latest episode (情节) is about how plastic is having a terrible effect on the ocean and slowly poisoning our sea creatures. Researchers have also found that sea creatures living in the deepest place on Earth, Mariana Trench, have plastic in their stomachs. Indeed, oceans are drowning in plastic.
Though it seems that the world couldn’t possibly function without plastic, plastic is a very recent invention. The first plastic bags were introduced in the 1950s, the same decade (十年) that plastic packaging began gaining popularity in the United States. This growth has happened so fast that science is still catching up with the change. Plastic pollution research, for example, is still a very early science.
We put all the plastic into the environment, but we still don’t really know what the outcomes are going to be. What we do know, though, is disturbing. Ocean plastic is expected to kill millions of sea animals every year. Hundreds of species, including endangered ones, are known to have been affected by it. One in three leatherback turtles, which often mistake plastic bags for jellyfish, have been found with plastic in their stomach. Ninety percent of seabirds are now eating plastic regularly. By 2050, that figure is expected to rise to 100 percent.
And it’s not just wildlife that is threatened by the plastic in our seas. Humans are consuming plastic through the seafood we eat. I could understand why some people see ocean plastic as a disaster, worth mentioning in the same breath as climate change. But ocean plastic is not as complicated (复杂的) as climate change. There are no ocean waste deniers (否认者), at least so far. To do something about it, we don’t have to remake our planet energy system.
This is not a problem where we don’t know what the solution is. We know how to pick up garbage. Anyone can do it. We know how to deal with it. We know how to recycle. We can all start by thinking twice before we use single-use plastic products. Things that may seem ordinary, like using a reusable bottle or a reusable bag — when taken collectively, these choices really do make a difference.
1. Why is plastic pollution research still a very early science?| A．The plastic pollution research is too difficult. |
| B．Plastic has produced less pollution than coal. |
| C．Plastic has gained popularity too fast for science to catch up. |
| D．The world couldn’t possibly function without plastic. |
| A．By presenting reliable data. |
| B．By citing quotes from leading experts. |
| C．By making a comparison and contrast. |
| D．By listing examples from his own experiences. |
| A．We reap what we sow. |
| B．The shortest answer is doing. |
| C．All things are difficult before they are easy. |
| D．Actions speak louder than words. |
| A．The oceans become choked with plastic. |
| B．Ocean plastic is a global problem. |
| C．Blue Planet Ⅱ has left viewers heartbroken. |
| D．Plastic gains in popularity all over the world. |
8 . The Dutch inventor Boyan Slat spends a lot of time thinking about the ocean.
After five and a half years of hard work, the 23-year-old Slat will watch from dry land as System 001 — a floating barrier nearly 2, 000ft long — snakes (曲折前行) its way out under the Golden Gate Bridge into the Pacific.
If all goes to plan, Slat says, a group of 60 systems could reduce the amount of plastic there by half by 2025. “I hope that this will be a turning point for the plastic pollution problem,” Slat tells TIME in a phone interview. “For sixty years it has only gotten worse and worse. Now hopefully we’re going to make a difference.”
Saving our oceans has been Slat’s single-minded goal ever since he was 16 years old, when a trip to Greece provided more plastic bag sightings than fish. Coming up with the idea for a floating barrier that could collect plastic using the power of ocean currents (洋流) alone, Slat founded his business, The Ocean Cleanup, aged just 18.
The idea caught people’s imagination around the world. In 2015, an early design of System 001 was featured on TIME’s list of the best inventions of 2015. The project has received millions of dollars of funding thanks to fast-changing public opinion on plastic.
Slat sees his mission as a race against time. Plastic gradually breaks down into smaller and smaller pieces called microplastics which can finally enter the food chain. “So the sooner we get it out, the better,” Slat says.
A big question that remains is what will happen to the plastic once it is brought back to land from The Ocean Cleanup’s systems. It’s possible that lots of the waste returned to land will be recycled into more single-use plastics that might one day return to the oceans again. “Big problems require big solutions,” he says. “If anyone has any better ideas, we’d love to know.”
1. What can Slat’s invention System 001 be used for?| A．Cleaning up ocean plastic. |
| B．Keeping a beach dry and clean. |
| C．Transporting passengers by sea. |
| D．Protecting living things in the Pacific. |
| A．He has a good head for business. |
| B．He is good at selling his idea to the media. |
| C．He has a deep sense of social responsibility. |
| D．He wants to change public opinion on the ocean. |
| A．It received great technical support worldwide. |
| B．It was unacceptable to fishermen. |
| C．It came into use very soon. |
| D．It was highly rated. |
| A．Making his invention available to the public. |
| B．How to deal with the collected plastic waste. |
| C．Recycling the waste created by his invention. |
| D．How to get more funding from the government. |
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 Turner, 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. How did the researchers conduct the study?| A．By referring to relevant historical records. |
| B．By comparing the paintings of Turner and Monet. |
| C．By relating the paintings to the air conditions then. |
| D．By analyzing the data during the Industrial Revolution. |
| A．Air pollution at that time. | B．Change in subject matter. |
| C．Social trends of the period. | D．Development of photography |
| 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 Plastic Ocean is a film to make you think.Think,and then act.We need to take action on our dependence on plastic.We’ve been producing plastic in huge quantities.Drinking bottles,shopping bags and even clothes are made with plastic.
The film begins as a journey to film the largest animal on the planet,the blue whale.But during the journey the filmmakers make the shocking discovery of a huge,thick layer of plastic floating in the Indian Ocean.
In the film there are beautiful shots of the seas and marine life.
They present short-term and long-term solutions.These include avoiding plastic containers and recycling as much as you can.The filmmakers also stress the need for governments to work more on recycling programmes.
We make a shocking amount of plastic.Over 300 million tons of plastic are produced every year,and at least 8 million of those are dumped into the oceans.The results are disastrous,but it isn’t too late to change.
| A．This causes them to travel around the world to look at other affected areas. |
| B．Once you’ve seen the film,you’ll realize it is time to do our part. |
| C．It has raised public concern all over the world. |
| D．We live in a world full of plastic,and only a small amount is recycled. |
| E．But the film doesn’t only present the negative side. |
| F．In conclusion,we only have one earth to live on. |
| G．These are contrasted with dumps of plastic rubbish. |
