My aim in life is
There is no
2 . Microplastics have invaded seemingly every part of the planet today, including the Arctic. Scientists have been puzzling over how this flood of pollution makes its way to such distant locations far from the city centers where it’s created. A new study finds a surprising route for the tiny particles (微粒).
Scientists found that Arctic surface waters had the highest microplastics concentrations of all the world’s oceans. “We asked ourselves, where does it come from?” says Melanie Bergmann, a scientist and lead author. The biggest load is carried north by the Gulf Stream.
But could microplastics be catching rides on the wind and landing far to the north as snow? It turns out they are. Snow from ice floes (浮冰) in the Arctic had surprisingly high concentrations of microplastics. One spot, close to the middle of the passage, had 14,000 particles per 34 ounces (盎司). And the average across all samples was 1, 800 particles. For comparison, the researchers also analyzed snow near Germany and the Alps. The microplastics measured there were considerably higher, with an average of 24, 600 particles per 34 ounces. So it seems aerial transport is the pathway to transport microplastics to the Arctic.
The study raises concerns about how much microplastics contaminate the atmosphere, carrying a possible health risk to people and animals that breathe them in. “Microplastic is in the air, and it’s not unlikely that we also breathe some of it in,” says Bergmann.
“People think that plastic pollution is a middle-of-the-ocean problem,” says Jennifer Provencher, who studies the effects of plastics and was not involved with the study. “And the more we work on this, the more we are learning that it’s not a middle-of-the-ocean problem. It’s a water body problem, it’s a ground problem, it’s an air problem, and it’s an Arctic problem,” she says.
“For human health, we now know very little. There is a lot of concern because we know we are exposed. More research is needed to fully understand the health effects,” says researcher Chelsea Rochman. Even worse maybe the threat from airborne nanoplastics — they’re too small to see and about which almost nothing is known. “They may actually enter cells,” says Rochman. “So we may have a big problem.”
1. What is the finding of the study?| A．Microplastics found in the Arctic come from the sky. |
| B．The least microplastics are found on the Arctic surface. |
| C．The majority of plastics in the Arctic water come from the air. |
| D．The highest concentrations of microplastics are in the Gulf Stream. |
| A．Shape. |
| B．Pollute. |
| C．Control. |
| D．Rebuild. |
| A．Microplastics cycle faster in the air than in the water. |
| B．Microplastics are easy to break down underground. |
| C．Plastic pollution affects the ocean most. |
| D．Plastics exist everywhere on Earth. |
| A．It has benefited humans greatly. |
| B．It has progressed smoothly. |
| C．It is totally disorganized. |
| D．It is still developing. |
3 . The effects of noise can reach organisms (生物体) without ears. Because of the way living things rely on each other, noise pollution may actually stop some forests from growing, a new study suggests. In a New Mexico woodland of pine trees, researchers found far fewer tree seedlings (小苗) in noisy sites than they did in quiet ones.
The study area is dotted with gas wells, some of which are quiet and some of which have compressors (压缩机) that create a constant noise. This allowed Jennifer Phillips, a behavioral ecologist at Texas A&M University-San Antonio and her colleagues to compare sites that were similar except for noise level. In areas that had been noisy for at least 15 years, the researchers found only about 13 pine seedlings, compared with 55 pine seedlings per hectare (公顷) in quiet areas.
The differences in plant growth were probably caused by changes in animal behavior, said Phillips. For example, noise might drive away certain pollinators (传粉昆虫) such as bees, bats and moths. In the case of pine trees, the problem was likely a lack of animals to disperse seeds. Pines depend on birds to carry their seeds away from the parent tree, and birds are known to avoid noise. The differences between the sites aren’t yet obvious to someone walking through them, said Sarah Termondt, a botanist (植物学家) with the U.S. Fish and Wildlife Service who helped conduct the study. That’s probably because pines are slow-growing, with most of the mature trees in such woodlands being over a century old.
The study raises questions about the future of the area. “If the noise stays there long term, are we going to lose this important ecosystem of the pine which supports so much wildlife?” said Phillips. The study was published today in the journal Proceedings of the Royal Society.
1. What does the new study focus on?| A．The influence of noise pollution on plants. |
| B．The way the organisms receive noise. |
| C．The harm of noise pollution to insects. |
| D．The effects of noise pollution on humans . |
| A．Gas wells dotted in the area provide favorable conditions for the study. |
| B．The study sites are different in many ways including their noise level. |
| C．It is difficult for plants to live without noise and animals. |
| D．People can easily find the difference between the noisy and the quiet sites. |
| A．Seedling. | B．Thin. |
| C．Grown-up. | D．Tall. |
| A．Noise pollution is obviously a trouble that can be avoided. |
| B．Noise pollution could be a threat with the power to change ecosystems. |
| C．The pine forest is important because it supports so much wildlife. |
| D．Wildlife should be well protected for the future of this area. |
4 . You’ve heard that plastic is polluting the oceans — between 4.8 and 12.7 million tonnes enter ocean ecosystems every year. But does one plastic straw or cup really make a difference? Artist Benjamin Von Wong wants you to know that it does. He builds massive sculptures out of plastic garbage, forcing viewers to re-examine their relationship to single-use plastic products.
At the beginning of the year, the artist built a piece called “Strawpocalypse,” a pair of 10-foot-tall plastic waves, frozen mid-crash. Made of 168,000 plastic straws collected from several volunteer beach cleanups, the sculpture made its first appearance at the Estella Place shopping center in Ho Chi Minh City, Vietnam.
Just 9% of global plastic waste is recycled. Plastic straws are by no means the biggest source (来源) of plastic pollution, but they’ve recently come under fire because most people don’t need them to drink with and, because of their small size and weight, they cannot be recycled. Every straw that’s part of Von Wong’s artwork likely came from a drink that someone used for only a few minutes. Once the drink is gone, the straw will take centuries to disappear.
In a piece from 2018, Von Wong wanted to illustrate (说明) a specific statistic: Every 60 seconds, a truckload’s worth of plastic enters the ocean. For this work, titled “Truckload of Plastic,” Von Wong and a group of volunteers collected more than 10,000 pieces of plastic, which were then tied together to look like they’d been dumped (倾倒) from a truck all at once.
Von Wong hopes that his work will also help pressure big companies to reduce their plastic footprint.
1. What are Von Wong’s artworks intended for?| A．Beautifying the city he lives in. | B．Introducing eco-friendly products. |
| C．Drawing public attention to plastic waste. | D．Reducing garbage on the beach. |
| A．To show the difficulty of their recycling. |
| B．To explain why they are useful. |
| C．To voice his views on modern art. |
| D．To find a substitute for them. |
| A．Calming. | B．Disturbing. |
| C．Refreshing. | D．Challenging. |
| A．Artists’ Opinions on Plastic Safety |
| B．Media Interest in Contemporary Art |
| C．Responsibility Demanded of Big Companies |
| D．Ocean Plastics Transformed into Sculptures |
5 . The online takeaway industry is growing in China along with the rapid development of the Internet economy. But environmental activists complain that the huge volume of plastic utensils (用具), wrapping and containers presents a great challenge to the environment, and that the heavy use of throwaway wooden chopsticks is reducing natural resources.
On September 1, the Beijing No.4 Intermediate People’s Court accepted a lawsuit filed by the Chongqing Green Volunteer League, an environmental non-government organization (NGO), against the country’s three largest food delivery platforms—Baidu Waimai, Ele.me and Meituan. The NGO stated that the companies failed to provide customers with the choice to not receive throwaway plastic utensils along with their food deliveries. Meanwhile, these utensils have created large amounts of rubbish and caused serious ecological damage.
In response, both Meituan and Ele.me, which acquired Baidu Waimai in August, have promised to take measures to reduce plastic waste. Meituan announced that it would appoint a chief environmental officer to oversee environmental issues from plastic waste and upgrade its smartphone app to provide consumers with the option of ordering food without single-use chopsticks, spoons or napkins. Ele.me followed by offering a similar choice and putting forward a plan to introduce suppliers of degradable (可降解的) plastic utensils to restaurants in the long term.
Is there a possible way out? Combined efforts by delivery platforms, consumers, restaurants and government departments are required to address plastic waste pollution.
For platforms, promoting environmental protection and introducing this idea to consumers are a meaningful move. Moreover, in the future, they should also make strict rules on the use of plastic utensils. For example, no more than one plastic bag should be used to wrap soup dishes, and all plastic products should be degradable. It is a long and difficult task for them, and the recent reactions from Ele.me and Meituan are just beginnings.
Considering most takeout food packaging is thrown into garbage bins and then taken away along with other household garbage, sorting of waste also becomes more important. Government departments could play a major role in this, and by recycling some materials, waste pollution could be reduced and resources saved. Furthermore, there have been growing calls that the government should also invest more in developing degradable plastic products or environmentally friendly alternatives.
Though consumers enjoy the convenience yet also suffer exposure to the pollution, many of them have paid little attention to the plastic waste problem. Environmental groups suggest that consumers change their habits a little by using their own utensils and dishes and refusing unnecessary plastic containers.
1. The Chongqing Green Volunteer League accused the three food delivery platforms of ________.| A．causing damage to people’s health |
| B．violating environmental standards |
| C．using many wooden chopsticks |
| D．offering no utensil option |
| A．raise people’s awareness | B．research possible alternatives |
| C．upgrade their application design | D．hire a chief environmental officer |
| A．Government departments. | B．Food delivery platforms. |
| C．Environmental groups. | D．Fast food restaurants. |
| A．why environmental problems arise |
| B．who food delivery platforms affect most |
| C．how plastic utensil pollution can be solved |
| D．what efforts environmental groups have made |
The Paris agreement to fight climate change became international law Friday. The landmark deal aims to deal with global warming among growing
So far, 96 countries, accounting for just over two-thirds of the world’s greenhouse gas emissions, have formally joined the agreement, which
United Nations Secretary General Ban-Ki Moon celebrated the event, talking with nongovernmental groups at U.N. headquarters in New York to hear their concerns and
“This is an emotional moment for me. It is a credit to all of you. And it is
He praised the
“We are still in a race
Scientists praised the speed at which the agreement, signed by 192 parties last December in Paris, has come into force, saying it shows a new commitment by the international community to
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Scientists and
| A．applicants | B．fears | C．observations | D．comments |
| A．seeks | B．allows | C．assumes | D．seizes |
| A．institutions | B．laboratories | C．committees | D．factories |
| A．formally | B．instantly | C．particularly | D．generally |
| A．prejudices | B．approaches | C．visions | D．concepts |
| A．spiritual | B．historic | C．appropriate | D．valueless |
| A．agreements | B．groups | C．headquarters | D．emissions |
| A．apologized | B．denied | C．warned | D．overlooked |
| A．against | B．on | C．for | D．without |
| A．avoid | B．find | C．address | D．ignore |
| A．falling | B．rising | C．disappearing | D．remaining |
| A．Until | B．Since | C．If | D．While |
| A．under no circumstances | B．on the contrary |
| C．in no case | D．by all means |
| A．officers | B．policymakers | C．employers | D．technicians |
| A．remove | B．preserve | C．supply | D．restore |
