1 . Objects in the night sky are disappearing from view because of light pollution, according to a new study. Outdoor lighting from street lamps, office buildings and vehicle headlights leads to sky less bright, which is when the night sky gets brighter. The brighter it is at night, the harder it is to see stars and planets from Earth.
Christopher Kyba, an astronomer with the GFZ German Research Center for Geosciences, led his team studying over 50, 000 star observations between 2011 and 2022. “If the brightening of the night sky continues at the current rate,” Kyba said, “a child born in a place where 250 stars are visible will only be able to see 100 stars by the time he or she turned 18.”
The issue is global but particularly common in North America, where 80% of people cannot see the Milky Way galaxy (银河系). This huge group of billions of stars should look like a wide strip of light in the dark night sky. However, only very remote places, such as the Sahara Desert and the Amazon Rain Forest, have a truly dark night sky.
Light pollution makes it harder for astronomers to study stars and planets. It also causes problems for animals. Animals active at night like bats become confused and crash into objects. Turtles that hatch (孵化)at night need moonlight to find the sea, but artificial lights can confuse them and make them head inland instead. Birds in cities often wake up and start singing earlier than they should. Human lights also cause themselves to produce less of a chemical called melatonin(褪黑激素). This can lead to sleep problems, headaches, tiredness, and mood issues.
To help, scientists want to raise awareness of light pollution. They suggest that people use outdoor lighting that causes less light pollution, such as motion-sensitive lights that switch on only when they’re needed.
1. How does the author lead in the topic of the text?| A．By giving examples. |
| B．By offering evidence. |
| C．By making comparison. |
| D．By bringing up the issue. |
| A．Light pollution is becoming serious. |
| B．Adults are easier to see stars than kids. |
| C．Stars are becoming fewer year by year. |
| D．Kids are losing interest in watching stars. |
| A．Turtles are forced to hatch at sea. |
| B．Humans produce more melatonin. |
| C．Bats can get lost during the flight. |
| D．Birds in cities wake up much later. |
| A．A New Origin of Light Pollution |
| B．Light Is Making Stars Unobserved |
| C．Ways to Deal with Light Pollution |
| D．Light Causes Human Sleep Issues |
2 . How many plastic carrier bags have you got in your house? I seem to have cupboards full of them and it feels like they’re taking over my home! The shopping bag is just one example of the milion things we use made from this useful material, plastic. But unfortunately, it’s not the easiest thing to recycle and this is causing an environmental problem.
Most of our everyday plastic items end up in landfill, left to rot away for many years. But some of it blows away, causing damage to the natural environment and harming wildlife. The problem is most serious in our oceans.
The study, published in the journal Proceedings of the National Academy of Sciences, described how remote islands act as a “sink” for the world’s rubbish. They become collecting points for fishing items and everyday things including toothbrushes, cigarette lighters and razors (剃须刀); things that we throw away. Dr Jennifer Lavers from the University of Tasmania says, “Almost every island in the world and almost every species in the ocean is now being shown to be impacted one way or another by our waste.”
This highlights the potentially deadly effect of our disposable culture. When we throw something away, it doesn’t just disappear, it goes somewhere and because of the long-lasting nature of plastic, it takes a lot time to decompose (分解) and stays there causing great damage to the ocean’s ecology.
Some other recent worldwide research estimates that 90% of all seabirds have swallowed plastic. And worse still, this plastic is broken down into tiny particles (颗粒) over a long period by the wind and the waves, then sea creatures at the bottom of the food chain ingest (咽下) them. These creatures are eaten by the fish that we eventually consume.
The solution to this problem would be to use less plastic. So next time you pick up a carrier bag, or buy a plastic bottle of water, spare a thought for the birds and animals on the remote islands. What do you do to help the environment?
1. What’s the function of the first paragraph of the text?| A．To explain an idea. | B．To create a suspense. |
| C．To introduce the topic. | D．To summarize the text. |
| A．Because of its lasting nature. |
| B．Because we use so much of it. |
| C．Because of our disposable culture. |
| D．Because it causes damage to the ocean’s ecology. |
| A．Seabirds. | B．Sea creatures. | C．Fish. | D．Human beings. |
| A．To consume less plastic. |
| B．To pick up a carrier bag. |
| C．To buy a plastic bottle of water. |
| D．To see birds and animals on the remote islands. |
3 . 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. |
4 . Water pollution caused by the coal industry is a critical issue that requires urgent attention. According to a report by environmental and clean water groups, coal plants are the primary source of toxic (有毒的) water pollution in the United States. Nearly 70% of 274 coal plants have no limits on toxic materials, such as As2O3 and Pb, and they were dumped directly into waterways. Over one-third of these plants have no requirements to monitor or report discharges of these toxic materials to government agencies or the public.
Furthermore, the report reveals that 71 coal plants discharge toxic water pollution into waterways that have already been declared damaged due to poor water quality. Almost half of the 386 coal plants surveyed operate without Clean Water Act permits, and 53 of them have permits that went out of date five or more years ago. These results are due to the lack of any strict standards limiting toxic pollution from coal plants.
Coal-fired power plants are the main source of toxic water pollution in the United States, accounting for more than half of all toxic water pollution. The human health impacts from this pollution are serious. The EPA estimates that nearly 140,000 people per year experience increased cancer risk due to As2O3 in fish from coal plants. The report indicates that almost 13,000 children under the age of seven each year have reduced IQs because of Pb in fish they eat, and almost 2,000 children are born with lower IQs because of toxic fish their mothers have eaten.
Fortunately, the EPA proposed the first ever national standards to limit toxics dumped into waterways from coal plants in April 2013. According to the EPA, these standards should reduce pollution by more than 5 billion pounds a year. The report suggests that the EPA’s new coal plant water pollution standards will not only clean up our water but will also save lives.
Affordable wastewater treatment technologies exist to prevent toxic discharges and are already in use at some plants. It is time for the coal industry to be responsible for the damage it is causing, and for the government to set stricter standards to protect the environment and public health. With the proposed EPA standards, there is hope for a cleaner future. By holding the coal industry responsible, we can make significant steps in protecting our waterways and ensuring that future generations have access to clean and safe water.
1. What can we learn from the first two paragraphs?| A．Over 100 coal plants have limits on toxic materials. |
| B．Most coal plants operate with Clean Water Act permits. |
| C．About half of 274 coal plants monitor the toxic materials. |
| D．Strict standards limiting toxic pollution are urgently required. |
| A．Outdated Clean Water Act permits. |
| B．Consumption of polluted fish by humans. |
| C．Air pollution caused by Coal-fired power plants. |
| D．Not advanced wastewater treatment technologies. |
| A．Significant. | B．Ineffective. |
| C．Alternative. | D．Meaningless. |
| A．Lack of strict standards to limit toxic pollution. |
| B．Serious health problems affected by coal plants. |
| C．Urgent joint efforts to deal with water pollution caused by coal plants. |
| D．Importance of affordable wastewater treatment technologies in the United States. |
THE GROWING PROBLEM OF E-WASTE
The term e-waste is short for “electronic waste”. It refers to electrical or electronic products that are thrown away when they are no longer needed. These include computers, televisions, ovens, and basically anything else that runs on batteries or has an electrical cord.
E-waste has been a problem since the 1970s because of how difficult it is to separate things like metal and plastic from various products. Also, many electronics contain toxic materials that can pollute the environment if left in landfills. Over the past few decades, the problem of e-waste has only increased along with advancements in technology.
E-waste is now the fastest-growing waste stream around the world. The total amount of e-waste created every year is expected to reach 74 million tons by the year 2030. Currently, it’s estimated that only about 17 percent of global e-waste is properly recycled. However, the United Nations hopes to bring that number up to 30 percent by the end of 2023.
With more people using smartphones and computers every year, the problem of e-waste cannot be ignored. To increase the recycling rate of e-waste items, cities should consider adding special collection boxes at grocery stores or government offices. There should also be delivery or pick-up services for e-waste items. That way, these items can be sent directly to people who are able to properly take them apart and recover their useful components.
Despite current difficulties, e-waste has great recycling potential. In addition to the items thrown away, lots of people keep old devices that aren’t used anymore. As a whole, they add up to a lot of metals and minerals that can, and should, be recycled. If these components are recycled to make new products, there would be less of a need to dig for more around the world.
So, if you must replace your phone or computer, try returning the device to the manufacturer or dropping it off at an e-waste processing facility if there is one nearby.
1. What does “electronic waste” refer to?2. What is Paragraph 2 mainly about?
3. Decide which part of the following statement is wrong. Underline it and explain why.
▶In order to reduce e-waste, people had better keep old devices that aren’t used anymore or drop them off in special collection boxes.
4. Apart from the ways mentioned in the passage, please share your way(s) to reduce e-waste. (About 40 words)
6 . Perhaps one day, robots could be cleaning up human-caused pollution in the ocean. At least that’s what scientists hope to achieve with the development of Jellyfish-Bot (水母机器人), a robotic device which looks like a jellyfish that could help pick up pollutants underwater.
The robot is about the size of a hand. The artificial muscles, called HASELs, can contract and expand, allowing Jellyfish-Bot to move through the water. Like a real jellyfish, the robot’s movements create currents beneath it. Jellyfish use the currents to collect nutrients, while Jellyfish-Bot uses these motions to trap pollutants. The robots move at a speed of 6.1 centimeters per second, trapping objects along the way, whether it’s a single robot or multiple ones working together. With larger objects, it may require at least two robots to collect and bring the items to the surface for recycling.
“It is also able to collect fragile biological samples such as fish eggs. Meanwhile, there is no negative impact on the surrounding environment. The interaction with aquatic (水生的) species is gentle and nearly noise-free,” explained Tianlu Wang, a postdoctoral researcher.
According to the researchers, the robot is no louder than background noise, so it shouldn’t menace sea life. The insulating polymer (绝缘聚合物) shell around the robot shouldn’t harm humans or fish if it were to be torn apart.
For now, the robots are powered by thin wires, which prohibits their practical use in oceanic settings. But the scientists hope that they can achieve a wireless Jellyfish-Bot in the near future.
“Seventy percent of oceanic litter is estimated to sink to the seabed. Plastics make up more than 60% of this litter, taking hundreds of years to degrade. Therefore, we saw an urgent need to develop a robot to move or control objects such as litter and transport it upwards,” Scientist Hyeong-Joon Joo said. “We hope that underwater robots could one day assist in cleaning up our oceans.”
1. What is paragraph 2 mainly about?| A．The working principle of Jellyfish-Bot. |
| B．The main parts of Jellyfish-Bot. |
| C．The effect of the robot on the ocean. |
| D．The threat of pollutants to the ocean. |
| A．Destroy. | B．Threaten. | C．Transform. | D．Dominate. |
| A．They have been widely used underwater. |
| B．They lack practical use in oceanic settings. |
| C．They will take the place of the wire robots. |
| D．They will be researched and developed for use. |
| A．It’s of great urgency to clean up ocean pollutants |
| B．A new function of robot is just around the corner |
| C．Jellyfish-Bot makes a lot of difference to the ocean |
| D．An underwater robot could help clean up ocean pollutants |
7 . The increased use of light-emitting diodes (LED) and other forms of lighting are now brightening the night sky at a dramatic rate. Research has revealed that light pollution is now causing the night sky to brighten at a rate of around 10% a year, an increase that threatens to ruin the sight of all but the most brilliant stars in a generation. A child born where 250 stars are visible at night today would only be able to see about 100 by the time they reach 18.
Physicist Christopher Kyba, of the German Centre for Geosciences told the Observer. “A couple of generations ago, people would have regularly encountered this glittering (闪耀) vision of the universe—but what was formerly universal is now extremely rare.” Nevertheless, the introduction of only a modest number of changes to lighting could make a considerable improvement, Kyba argued. These moves would include ensuring outdoor lights are carefully capped, point downwards, have limits placed on their brightness, and are not predominantly blue-white but have red and orange components.
The problem is that light pollution is still not perceived by the public to be a threat. As Professor Oscar Corcho, of Universidad Politécnica de Madrid, has put it: “The negative consequences of light pollution are as unknown by the population as those of smoking in the 80s.”
Yet action is now urgently needed. Apart from its astronomical impact, light pollution is harming human health. “When reddish light shines on our bodies, it stimulates mechanisms including those that break down high levels of sugar in the blood. Since the introduction of LEDs, that part of the spectrum (光谱) has been removed from artificial light and it is playing a part in the waves of obesity (肥胖) and rises in diabetes cases we see today,” said Prof Fosbury from University College London (UCL),
UCL researchers are preparing to install additional infrared (红外线) lamps in hospitals and intensive care units (ICU) to see if they have an effect on the recovery of patients who would otherwise be starved of light from this part of the spectrum.
1. What does the author want to show by citing the child’s example?| A．More objects in the universe will disappear. |
| B．Light pollution is blinding our view of the stars. |
| C．People’s perception of the universe is inadequate. |
| D．New forms of lighting have made stars unnecessary. |
| A．They are practical. | B．They are rarely successful. |
| C．They aren’t worth the effort. | D．It takes ages to see the result. |
| A．Controlling population growth. |
| B．Changing people’s perception. |
| C．Exploring the unknown universe. |
| D．Banning smoking in public places. |
| A．Whether they help patients recover. |
| B．Whether they increase obesity risk. |
| C．Whether they leave people starving. |
| D．Whether they raise blood sugar level. |
8 . 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. |
9 . A newly published study shows that chess players perform objectively worse and — make more suboptimal (次最优的) moves when there is more fine particulate matter (颗粒物) in the air.
“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, a co-author of a newly published paper detailing the study’s findings.
Scholars have produced many studies exploring the effects of air pollution on cognition. The current study adds to that literature by analyzing the subject in a particularly controlled setting. The scholars used three web-connected sensors inside the tournament venue to measure carbon dioxide, PM2.5 concentrations, and temperature, all of which, can, be affected by external conditions, even in an indoor setting.
To evaluate the matter of performance of players, meanwhile, the scholars used software programs that assess each move made in each chess match, identify optimal decisions, and flag significant errors. During the tournaments, the researchers examined and ruled out alternate potential explanations for the dip in player performance, such as increased noise. They also found that carbon dioxide and temperature changes did not correspond to performance changes. Ultimately, the analysis confirms that the findings are driven by the direct exposure to air particles.
The researchers also found that when air pollution was worse, the chess, players performed even more poorly when under time constraints. The tourmament rules required that 40 moves had to be made within 110 minutes; for moves 31-40 in all, the matches, an air pollution, increase of 10 micro-grams per cubic meter led to an increased probability of error of 3.2 percent, with the magnitude of those errors increasing by 17.3 percent. And while the focus of this particular study is tightly focused on chess players, the findings have strong implications for high-skilled office workers.
1. What does the study find about air pollution?| A．It becomes more and more serious in the gym. |
| B．It can help evaluate chess players’ performance. |
| C．It may affect more people with mental processes. |
| D．It can’t be affected by indoor surroundings. |
| A．To measure carbon dioxide and temperature. |
| B．To assess the performance of players. |
| C．To help players make great moves. |
| D．To distinguish players’ errors in time. |
| A．Limit. | B．Freedom. | C．Consumption. | D．Measurement. |
| A．Various reasons for chess players’ mistakes. |
| B．A new research on chess players’ performance. |
| C．Scholars’ concern about chess players’ health. |
| D．The influence of air pollution on chess players. |
10 . 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. |
