1 . My husband and I always wanted to go to the Caribbean but didn’t know much about the islands or how we were going to afford it. By chance, a friend of ours in Australia mentioned “pet sitting” and that it is something you can do all over the world.
We quickly created an account on a pet sitting website and began searching for options. There were only a couple of sits available in that part of the world, but we tried our luck, sent a request, and to our surprise, landed a three-month job in Grenada, so our year was going to be taken up with Caribbean pet sits.
Inspired by a Canadian couple, we decided to start our own travel blog. We began by writing about The British Virgin Islands, highlighting the beautiful beaches. However, for every photo album of a beautiful beach, there were 10 photos of trash (垃圾). It was hard to ignore the plastic pollution issue, especially on such primitive and remote beaches. So, we began to share photos of the trash we saw and how much we could pick upon our daily dog walks.
The more we looked into plastic pollution, the more we realized the severity of the global plastic pollution. From that point, we used our platform to create awareness and highlight ways to say no to plastic and travel plastic-free. We changed our daily routines, our way of living, and even our diets to accommodate more organic foods and little to no plastic packaging.
It’s been over three years now and we continue to do what we can. This journey has led us to some amazing places, working with great brands and even organizing a country-wide beach clean-up campaign in Grenada.
Our aim now is to keep on going. We love connecting with like-minded people. It’s been amazing few years that was sparked by a conversation about pet sitting. Who would have guessed?
1. Why did the author do pet sitting?A.To cover travel expenses. | B.To raise fund. |
C.To conserve the environment. | D.To shoot beautiful beaches. |
A.Pet sitting is a new sort of occupation. |
B.The Caribbean is a perfect travel destination. |
C.Travel blog is a superb way to gain popularity. |
D.Actions should be taken to fight plastic pollution. |
A.Challenging. | B.Significant. | C.Adventurous. | D.Unbearable. |
A.Shifting Lifestyles by Pet Sitting | B.Address Global Environment Pollution |
C.Unexpected Gains from Pet Sitting Travel | D.The availability of Pet Sitting in the Caribbean |
2 . Sixty-six years ago, there was one human-built object in Earth’s orbit. It was Sputnik, the world’s first satellite, launched in October 1957. Try to guess how many human-made objects are circling the planet now. Ready?
Your answer is wrong, unless you guessed 100 trillion. That’s a jaw-dropping number. It was provided by an international team of researchers writing in the journal Science. For years, this junk has formed an ever-growing mass near Earth. It’s a danger to spacecraft. The researchers are calling for a global treaty to limit the number of satellites and the amount of rubbish in space.
There are 9,000 active satellites in orbit, the scientists report. That could grow to more than 60,000 by 2030. The rest of that 100 trillion figure includes everything from used-up booster rockets and stray bolts to metal flecks and paint chips. Don’t think a paint chip is harmless. Travelling at 17,500 miles per hour, it can strike a spacecraft hard. The International Space Station is dotted with dents and holes. Astronauts often take shelter in an attached spacecraft to wait out a passing swarm of space debris (残骸). That way, if the station is severely damaged, they can escape in a hurry.
The mess we’ve made in space is like the mess we’ve made in the oceans. Think of the Great Pacific Garbage Patch. It’s a mass of floating junk twice the size of Texas. We’ve had centuries to make the ocean dirty. But it has taken just decades for us to do the same in space. That’s why the Science authors include experts in satellite technology and in ocean plastic pollution. “As a marine biologist, I never imagined writing a paper on space,” writes Heather Koldewey, who works at the Zoological Society of London. Cleaning up space, she says, has a lot in common “with the challenges of tackling environmental issues in the ocean.”
Coauthor Moriba Jah is an aerospace engineering professor at the University of Texas at Austin. “Marine debris and space debris,” he writes, “are both a human-made damage that is unavoidable.”
1. Why is Sputnik mentioned in paragraph 1?A.To provide background information. |
B.To introduce the topic. |
C.To make a comparison. |
D.To tell a story. |
A.What caused space debris. |
B.The number of space debris. |
C.The seriousness of space pollution. |
D.What astronauts often do in space. |
A.Ocean pollution is very serious. |
B.Ocean is the same as space. |
C.Space pollution is getting worse. |
D.She is going to write a paper on space. |
A.There is the same amount of marine debris and space debris. |
B.Humans are to blame for the space pollution. |
C.Marine and space pollution are unavoidable. |
D.Humans can do nothing to prevent space pollution. |
3 . There are many kinds of pollution, which can be classified by environment, including air pollution, water pollution, and land pollution. Modern society is also concerned about specific types of pollution, such as noise pollution, light pollution and plastic pollution. Pollution of all kinds may not only have negative effects on the environment and wildlife, but also do harm to human health and well-being.
Although environmental pollution can be caused by natural events such as forest fires and active volcanoes, use of the word “pollution” generally means that the wastes have an anthropocentric source—that is, a source created by human activities. Pollution has accompanied humankind ever since groups of people first congregated and remained for a long time in any one place. Indeed, ancient human settlements are frequently recognized by their wastes, Pollution was not a serious problem as long as there was enough space available for each individual or group. However, with the establishment of permanent settlements by great numbers of people, pollution became a problem, and it has remained one ever since.
By the middle of the 20th century, an awareness of the need to protect air, water, and land environments from pollution had developed among the general public. In particular, the publication in 1962 of Rachel Carson’s book Silent Spring focused attention on environmental damage caused by improper use of pesticides such as DDT. In response, major pieces of environmental law and regulation were passed in many countries to control the environmental pollution.
Great efforts are made to limit the release of harmful substances into the environment. Unfortunately, attempts at pollution control are surpassed by the scale of the problem, especially in less-developed countries. Noxious levels of air pollution are common in large cities. To control the pollution completely, we still have a long way to go.
1. What does paragraph 1 mainly talk about?A.The history of pollution. | B.The types of pollution. |
C.The causes of pollution. | D.The effects of pollution. |
A.Natural disasters. | B.Forest fires. |
C.Volcanoes. | D.Human activities. |
A.Gathered. | B.Separated. |
C.Attended. | D.Lived. |
A.No measures have been taken by the government to control the problems of pollution. |
B.The book Silent Spring helped to improve the awareness of protecting the environment. |
C.Silent Spring concentrated on the improper use of plastic bags. |
D.The pollution has been controlled in less-developed countries. |
4 . Microplastics, or tiny plastic particles - have been found in human blood for the first time.
In a paper published in Environment International, researchers in the Netherlands analyzed 22 blood samples from healthy donors and found that 17 or almost 80% contain microplastics.
The team tested for five types of plastics. Polyethylene terephthalate (PET), commonly used in disposable water bottles, was the most common plastic type and found in about 50 percent of the donors. The second most common, polystyrene (PS) which is used for food packaging, was found in about 36 percent. Alarmingly, the researchers found up to three different types of plastic in a single blood sample.
Previously, microplastic pollution has been recorded to the summit of Mount Everest, oceans, seafood, water and air. It is the first study to find such tiny particles in human blood. “The particles are transported throughout the body and stay in internal organs,” study author Dick Vethaak, an ecotoxicologist in the Netherlands says to the Guardian.
The health effects of taking in microplastics are currently unclear. Today, the only data available are laboratory studies that show its unfavorable effects on mice or rats when given large quantities of microplastics. As Professor Mark Taylor of Macquarie University in Sydney told The Guardian last year, “nobody really knows.” However, as he stressed., “Absence of evidence is not evidence of absence.” If we’re to understand the effects, the first step underway at the moment is understanding levels of exposure.
It is estimated that since the 1950s, more than 70 million tons of microplastics have been dumped into the oceans due to industrial manufacturing processes. A WWF report also suggested we’re all unintentionally taking in 125 grams of plastic every 6 months. Despite the small number of donors in the study, pollution expert Fay Couceiro of the University of Portsmouth, who was not involved in the study, tells the AFP that the study was “solid and will stand up to examination.” Now, many countries are taking action to reduce microplastics in the environment.
1. What did scientists find in the study of 22 donors’ blood samples?A.Half the blood samples contained microplastics. |
B.PET was the most common plastic in the samples. |
C.Altogether three types of plastics are detected in samples. |
D.Donors were healthy despite microplastics in their blood. |
A.Microplastics can damage human internal organs. |
B.Microplastics have unfavorable effects on humans. |
C.Multiple types of plastic were found in one sample. |
D.Microplastics have polluted the peak of Mount Everest. |
A.Their effect is too weak to note. |
B.Evidence shows no health impacts. |
C.Lots of more study about them is needed. |
D.Levels of exposure to microplastics matter. |
A.How microplastics get into the food chain. |
B.How widespread microplastics have become. |
C.Distribution of microplastics in the ecosystem. |
D.Effective measures taken to restrict microplastics. |
5 . Microplastic pollution is increasing dramatically around the globe, according to a study of airborne (空气传播的) plastic particles(粒子).
People are already known to breathe, drink and eat microplastics, and research suggests that pollution levels will continue to rise rapidly. The researchers said that inhaling (吸入) these particles can irritate (刺激) lung tissue and lead to serious diseases.
Professor Natalie Mahowald, at Cornell University in the US and part of the research team, said: “But maybe we could solve this before it becomes a huge problem, if we manage our plastics better, before they accumulate (积聚) in the environment and swirl (打旋) around everywhere.”
The research, published in the journal Proceedings of the National Academy of Sciences, examined airborne microplastics, which have been far less studied than plastic in oceans and rivers.
The team gathered more than 300 samples of airborne microplastics from 11 sites across the western US. These were the basis for atmospheric modeling that estimated the contribution from different sources, and was the first such study to do so.
They found that roads were the dominant factor in the western US, linked to about 85 percent of the microplastics in the air. These are likely to include particles from tires and brake pads on vehicles, and plastics from litter that had been broken down.
The researchers extended their modeling work to a global level and this suggested that while roads are also likely to be the dominant driver of airborne plastics in Europe, South America and Australia, plastic particles blown up from fields may be a much bigger factor in Africa and Asia.
Professor Andreas Stohl of the University of Vienna’s Faculty of Earth Sciences, and not part of the study team, said: “The study confirms the global-scale nature of microplastic transport in the atmosphere and does a good job in highlighting highly relevant and concerning possibilities, but more measurement data is needed to get a better idea of the sources.”
1. What do we know about microplastic pollution from the text?A.It has become the most pressing environmental problem. |
B.The particles can do great harm to our lungs. |
C.Airborne microplastics have been widely studied. |
D.There is more plastic in the air than in oceans. |
A.Its impact varies on different continents. |
B.Public transportation is largely to blame for it. |
C.Its dominant driver differs across continents. |
D.Africa is suffering the most from the pollution. |
A.predict the potential damages of microplastics. |
B.understand the nature of airborne plastic pollution globally. |
C.get more data to understand the sources of microplastics. |
D.improve the method of collecting samples of microplastics. |
A.Effects of microplastics on human health | B.Plastic pollution rising rapidly in the air |
C.Possible solutions to plastic pollution | D.Plastic pollution on the global scale |
6 . Most cities were built on rivers. People originally settled in Paris because of the Seine, and in London for the Thames. A third of New York City’s surface area is water. For centuries, city folk used rivers for shipping, fishing and play. In a rare city without a big river, Johannesburg say, you notice its absence.
Yet in recent decades, we have ignored urban rivers. The Industrial Revolution ruined rivers for more than a century. Huge new urban populations filled them with waste water, factory emissions(排放物) and harmful gases of ships. In Newcastle in the early 1800s, salmon(鲢鱼) had been so plentiful in the River Tyne that apprentices(学徒) were said to have terms in their contracts stating that their masters shouldn’t make them at it every day. By the 1950s, the salmon were gone.
However, in recent decades, cities began cleaning up rivers. The Thames is now the cleanest it has been in 150 years and has seals and the occasional whale, sometimes alive. In cities like Chicago, riverside storehouses have been turned into fashionable restaurants and waterfront apartments. All in all, the latest trend is to change urban waterways into the natural play space so lacking in most cities.
But rivers also need to regain their original purpose as transport center. Passenger traffic may decrease as an urban issue if working from home becomes the norm during and even alter the pandemic. But there’s one form of urban traffic that just keeps growing: deliveries. Imagine using the enormous capacity of shipping to take delivery trucks off the roads. One of the newer Thames barges(驳船) with a capacity of 1, 750 tons can replace 44 large trucks, which uses much less energy and causes less noise pollution. In other words, we need to turn truck drivers into barge captains.
Rivers are the reason our cities are where they are. We just forgot about them.
1. What is paragraph 1 mainly about?A.The reason for the rise and fall of cities. |
B.The importance of rivers to cities. |
C.The changes in cities along the rivers. |
D.The locations of the famous rivers. |
A.To indicate masters were generous to them. |
B.To blame them for the mass extinction of salmon. |
C.To imply the River Tyne was in good condition then. |
D.To praise their contributions to the Industrial Revolution. |
A.Waterfront apartments have been torn down. |
B.Amusement parks have sprung up along urban rivers. |
C.Riverside storehouses have served as places of leisure. |
D.Waterways have been filled with emissions and abandoned ships. |
A.Use barges to make deliveries. |
B.Lay off truck drivers gradually. |
C.Decrease working time from home. |
D.Speed up smart urban traffic management. |
7 . Many of us might not give a second thought to dropping a small piece of litter. After all, if it is so small, it cannot possibly be that harmful, can it? In today’s world, the answer is certainly “Yes, it can! “With the growing use of plastic bags and the rising number of smokers, there is more litter being produced than ever before.
Although cigarette butts are small, they are bad for the environment. Worldwide, about 4. 3 trillion cigarette butts are littered every year. As well as spoiling the beauty of the environment, they contain poisonous chemicals. These find their way into the water supply where they affect water quality and endanger plants and animals. Cigarette butts can take up to 25 years to break down, and the poisonous chemicals add up to a large amount with so many littered. So, if people want to smoke, they should dispose of the butts properly in a rubbish bin.
Plastic bags are another common form of litter that is dangerous to the environment. They are easily blown by wind and float in water, so they can travel long distances. They find their way to rivers, parks, beaches and oceans, killing many birds, mammals, fish, and sea animals each year worldwide. They can last for hundreds of years in the environment. We should not let plastic bags become litter. We should use fewer plastic bags, and reuse and recycle what we have already used.
One way to reduce the use of plastic bags is to charge for them. Shops used to give plastic bags for free. But in some countries, including China, customers are now charged for each bag. Some shops also have a “bag -for-life “ scheme. They sell strong bags that can be reused, and they replaced them for free if the bags ever break.
Waste is a big problem for the environment, so we need to do something. Not littering at all or cleaning up “small waste” saves money spent on coping with litter properly. However, it would be better not to smoke or use plastic bags at all.
1. Small pieces of litter can be harmful because_________A.Litter from smokers and plastic bags have greatly increased. |
B.Plastic bags and litter are easily blown by wind and float in water. |
C.Plastic bags and cigarette butts spoil the beauty of the environment. |
D.Plastic bags and cigarette butts definitely contain poisonous chemicals. |
A.set off | B.deal with | C.figure out | D.bring about |
A.People recycle the used plastic bags and smoke less. |
B.Shops offer the customers plastic bags free of charge. |
C.Smokers leave cigarette butts regularly in a rubbish bin. |
D.We all save money spent on disposing of litter properly. |
A.More charge, less litter. |
B.Strict control, little litter |
C.Small waste, big problem |
D.Small butts, bad environment |
8 . Residents of several villages in Russia’s Magadan region have recently reported black snow caused by the black powder produced by an outdated, coal-powered water-heating plant. In Omsukchan and neighboring Seimchan, two villages in the Siberian far east, snow doesn’t always look the way you’d expect. In fact, sometimes it’s quite the opposite. Instead of white snow covering everything as far as the eyes can see, locals are treated to a bad view of black snow that the kids sometimes play in. Photos and videos of this disturbing scenery have been doing the rounds online every winter for years, but locals say that despite the temporary anger they express online, nothing ever changes.
Black often represents tough luck but the black snow isn’t the result of some sinister, unexplained phenomenon. Omsukchan is home to a coal-burning hot water plant that provides heating to several settlements in the area, and as temperatures drop in the winter months, more coal has to be burned in order to keep water temperatures up. This results in increasing black smoke in the atmosphere. The smoke coming out of the plant’s chimneys eventually falls to the ground, covering everything, including white snow. So the black snow that people see is simply the effect of coal pollution.
Oksana Gerasimova, the head of the Srednekansky district, tells Magadan Pravda newspaper that the plant is indeed to blame, but adds that the situation is better than it was a few years ago. It’s true that the ash and smoke collectors at the plant don’t do a perfect job, but the situation is only temporary and the black snow is apparently “not a reason to worry”.
Authorities’ plans to change the filters in the coal-burning plant to stop the pollution are underway, and they want to replace the old plant with an electricity-powered one, but it requires new sources of funding. Most of the people living in Omsukchan and Seimchan have heard that before and they are raising their hopes.
1. What causes the black snow in Russian Magadan Region?A.Coal smoke. | B.Water pollution. | C.Shooting angle. | D.Video technology. |
A.Evil. | B.Damp. | C.Sensitive. | D.Recreational. |
A.It is unrelated to any plants. | B.It will worry people forever. |
C.It will be solved in the future. | D.It receives less attention than before. |
A.Cautious. | B.Expectant. | C.Unconcerned. | D.Reserved. |
9 . Lacking a nose, insects such as butterflies and bees use their antennae (触须) to detect smells. Those smells help them find food and more. What happens, though, when air pollution beats the smells on which these creatures depend? Those insects become less likely to visit a flower. That’s the finding of a new study.
People depend on insects to help the plants to make many of the fruits, nuts and vegetables we eat. Past studies showed urban air pollution might hide the smells insects use to find flowers. For instance, ozone(臭氧), an ingredient in smog, can break down the smells from flowers. Computer models predicted this would cause problems for insects seeking flowers for a meal. But scientists weren’t sure that would happen in real life.
James Ryalls and his team decided to find out if it would. Ryalls is a biologist at the University of Reading in England. Working in a field of black mustard plants, his group created a system made up of rings eight meters in diameter. Each area was open, so nearby insects could fly into it. The researchers pumped pollutant gases into these rings: Two rings received diesel fumes(柴油废气). Two more got ozone. Another two got both gases. A final pair of rings was a control and received no added gases.
The tests took place over two summers. During each field season, the scientists counted how many times insects visited the flowers in each ring. “The results were much more severe than we thought,” Ryalls says. Adding both the diesel fumes and ozone pollution “caused up to 90 percent less insects to be able to find the flowers that they need for food,” he says. This was in comparison to the pollutant-free rings. This surprised the scientists and made them worried about the food resources of humans.
1. What is the finding of the new study?A.Insects have noses. | B.Insects can feel smells. |
C.Smells are helpful for insects to get food. | D.Polluted air makes insects hard to find food. |
A.Part. | B.Shape. | C.Flower. | D.Colour. |
A.Seven rings had gasses. | B.They lasted two summers. |
C.They were led by a biologist. | D.They were done on the playground. |
A.Save Flowers. | B.Poor Insects. |
C.Tests by Researchers. | D.Environment and Food. |
10 . Many of us might not give a second thought to dropping a small piece of litter. After all, if it is so small, it cannot possibly be that harmful, can it?
Although cigarette ends are small, they are bad for the environment. Worldwide, about 4.3 trillion cigarette ends are littered every year. As well as ruining the beauty of the environment, they contain poisonous chemicals.
Waste is a big problem for the environment, so we need to do something. Not littering at all or cleaning up “small waste” saves money spent on clearing off litter properly.
A.They are harmful to our health. |
B.These find their way into the water supply. |
C.In today’s world, the answer is certainly “Yes, it can!” |
D.Proper measures should be taken to deal with the pollution issues. |
E.However, it would be better not to smoke or use plastic bags at all. |
F.Plastic bags are another common form of litter dangerous to the environment. |
G.But in some countries, including China, customers are now charged for each bag. |