1 . Plastic pollution is growing rapidly across Earth’s ecosystems and its threat to humanity and wildlife is too. Outcomes for health and the environment will be severe unless we address it, says a United Nations (UN) report. But the discovery of microplastics in human blood means immediate action is needed.
Researchers found tiny plastic particles (微粒), less than one-thousandth of a millimeter in size, in almost 80 percent of 22 people they tested. Such small plastics can travel through the body and could stick in our vital organs. These tiny pieces could damage cells and tissues, causing many diseases like cancer.
“I was shocked but not surprised. We already knew that microplastics have been found in human organs. The body finds it hard to break these particles down, which associate them with chronic (长期的) disease,” said Jo Royle, the CEO of Common Seas—a social enterprise looking to stop plastic pollution. “It’s clear that the best way to battle with microplastics and prevent health problems is to make sure they don’t end up being deserted in our environment in the first place,” added Royle. “This is why we need leaders and businesses to take responsibility for plastic trash along its lifecycle.”
Some oil and gas companies that supply plastic products plan to expand plastic output and double production in the next 20 years. But analysts say that would backfire on people, governments, and industries rejecting plastic to protect the environment. Big brands are reducing plastic packaging and changing to alternatives. Plastic is seen as a threat as large as climate change and a UN treaty against pollution is the result.
Natural products like plant materials and even silk offer plastic alternatives, especially in food and product packaging. But the UN believes we cannot simply recycle our way out of the problem. An immediate reduction and industry transformation are needed. As the blood microplastic study suggests, that transformation must be rapid. Because the rate at which we absorb plastic into our bodies is faster than the rate we remove it. And that needs a planet-wide response.
1. What is the best way to solve microplastics problems according to Royle?| A．Medical treatments for microplastics. |
| B．Restrictions on throwing plastic waste. |
| C．Developing natural alternatives to plastic. |
| D．Raising personal awareness of microplastic. |
| A．Go against. | B．Apply to. | C．Depend on. | D．Respond to. |
| A．Recycling plastics proves to be not effective at all. |
| B．Rapid transformation in plastic industry is needed. |
| C．Most natural materials can be alternatives to plastics. |
| D．The rate of bodies’ absorbing plastics is uncontrollable. |
| A．Plastic Pollution Is Transforming Humans’ Lifestyle |
| B．Increasing Updated Plastics Have Enjoyed Popularity |
| C．Microplastics in Blood Highlight Health Emergency |
| D．Practical Solutions to Plastic Waste Are Approaching |
2 . In the U. S., people eat more protein than they need to, which might not be bad for human health, but does pose a problem for the country’s waterways. The nation’s wastewater is loaded with the leftovers from protein digestion: nitrogen compounds(氯化合物) that can feed harmful algal blooms(藻华) and pollute the air and drinking water.
Maya Almaraz, a biogeochemist at the University of California, Davis, and her team wanted to see how much of this nitrogen entered into the U. S. wastewater system because of a protein-heavy diet. The researchers found that the majority of nitrogen pollution present in wastewater—some 67 to 100 precent—is a by-product of water people consume.
Once it enters the environment, the nitrogen can have a series of ecological impacts. It helps algae grow much faster than they would normally, which is harmful to humans, other animals and plants. And when the algae eventually die, the problem is not over. Microorganisms(微生物) that feed on dead algae use up the oxygen in the water, leading to “dead zones,” where many species simply cannot survive, in rivers, lakes and oceans.
Although it is possible to treat algal blooms, many of the current methods are not always effective at getting rid of all of the harmful growth. Some of these methods can even lead to additional pollution. So the best strategy for dealing with the effects of nitrogen pollution is prevention, says Patricia Glibert, an ocean scientist at the University of Maryland. Almaraz and her team suggest that controlling nitrogen pollution could be approached more quickly with a change in eating habits that could save billions of dollars in the long term.
1. Which aspect of Americans’ diet does Almaraz’s research focus on ?| A．Its variety. | B．Its effect. | C．Its make-up. | D．Its amount. |
| A．No oxygen for many species. | B．Death of lots of healthy algae. |
| C．Microorganisms’overconsumption of nutrients. | D．Poisonous chemicals released by harmful algae. |
| A．They are costly. | B．They may kill all algae. |
| C．They are slow to take effect. | D．They may cause secondary pollution. |
| A．It is high time to treat wild algae growth. | B．Eating too much protein harms the planet. |
| C．Prevention is better than cure in treating air pollution. | D．Researchers find solutions to the wastewater problem. |
3 . A new study has found that light pollution is making the night sky brighter and the stars dimmer (暗淡的). The study examined data from more than 50, 000 citizen star watchers across the world, It found that man-made, or artificial lighting is making the night sky about 10 percent brighter each year. Data for the study was collected from 2011 to 2022.
The result was a much faster rate of change than scientists had estimated in the past. As cities expand and put up more lights, a “skyglow” is created in the sky. Skyglow is a term scientists use to describe light that becomes more intense. The research team gave an example to explain the result. If a child is born where 250 stars can be seen on a clear night, by the time that child turns 18, only 100 stars will be seen.
Past studies involving artificial lighting used satellite images of the Earth at night. They had estimated the yearly increase in sky brightness to be about 2 percent a year. But the satellites used are not able to identify light with wavelengths toward the blue end of the spectrum (光谱) — including light given off by energy-effective LED bulbs. The researchers noted that more than half the new outdoor lights put in across the United States during the past 10 years have been LED lights. The satellites are also better at finding light that gets spread upward like a spotlight than light that spreads out from side to side, Kyba said.
“Migratory songbirds normally use starlight to orient (确定方向) where they are in the sky at night,” said Georgetown University biologist Emily Williams. She was not part of the study. And when sea turtle babies hatch, they use light to orient toward the ocean — light pollution is a huge deal for them.
Falchi, the physicist at the University of Santiago de Compostela, said part of what is being lost is a universal human experience. “The night sky caused the generations before ours to have exciting new ideas or made them want to create something, especially in art, music, science and literature,” he added.
1. What does the new study find according to Paragraph 1?| A．Stars are observed by more citizens. |
| B．Stars are much brighter than in the past. |
| C．Light pollution continues to darken stars. |
| D．Light makes the night sky more beautiful. |
| A．To highlight an experiment. |
| B．To present an assumption. |
| C．To clarify a concept. |
| D．To explain the result of artificial light. |
| A．By the moonlight. | B．By the starlight. |
| C．By the sunlight. | D．By the spotlight. |
| A．Inspirational. | B．Mysterious. | C．Awesome. | D．Scared. |
4 . Lithium (锂) is called “white gold” for good reason. The metal’s value has been growing sharply over the last several years, in a large part because it is an essential part of batteries as well as several key sustainable technologies where energy storage is of huge significance. As electric cars, wind and solar power have grown into major players in the energy industry, lithium has become key to engineering a future free of fossil (化石) fuels.
But acquiring lithium comes at an enormous cost. It often works like this: Water containing lithium is delivered to the surface from underground and mixed with fresh water. The mixture then sits in pools to get rid of water, leaving the rest of its contents behind as brightly colored “mud”. Then heat and chemical reactions are used to get lithium from that, changing it into powder which is then packaged and shipped to buyers around the world.
Any accident that releases mine contents into surrounding communities or the groundwater supply could have unimaginable long-term impacts. To be specific, indigenous (土著的) communities often bear the damage, and political leaders have typically given little weight to their concerns. In Arizona, for example, an expanding lithium mine is threatening the Hualapai Tribe’s cultural and historic sites. Recently, mining lithium and other precious metals has brought about conflict: How do you ensure the availability of materials essential to the future of renewables while protecting those communities’ rights?
Mining of the metal is expected to increase dramatically in coming years. Over time, experts say, that will reduce greenhouse gas emissions (排放) by making electric cars more affordable and, therefore, more popular. As environmentally conscious consumers buy electric cars in ever-greater numbers, it’s important to be aware of the dirty process that powers those clean air vehicles.
1. What does the author’s intention of writing Paragraph 1?| A．To introduce the background of an event. | B．To explain a complex industrial theory. |
| C．To describe a noticeable recent tendency. | D．To predict the future of a main technology. |
| A．Unexpected material leak. | B．Violent chemical reactions. |
| C．Wrong political decisions. | D．Lithium mine expansion. |
| A．Intolerant. | B．Uncaring. | C．Favorable. | D．Objective. |
| A．High Expense of Lithium Mining | B．Potential Benefit of Using Lithium |
| C．Hidden Threat behind Clean Energy | D．Bright Future of Renewable Resources |
5 . The tradition of giving gifts didn’t start with the modern holidays we celebrate. Many ancient cultures celebrated holidays with the exchange of gifts. People who love to give gifts often can’t wait until it’s time for the recipients to open their gifts. If you’ve ever been given a gift, you know that part of the fun is the curiosity that builds as you wonder what the gift is.
The wish to hide the identity of a gift until just the right moment led people to wrap gifts long, long ago. Historians believed wrapping gifts in paper probably started not long after paper was invented thousands of years ago.
Wrapping paper like what we use today, though, is a much more recent invention. More than 100 years ago, gifts were usually wrapped in heavy brown paper. Before that, cloth was often used. The technology to mass-produce wrapping paper didn’t come along until the early 1900s. The first American gift wrap company— Hy-Sill Manufacturing Inc. — was founded by Eli Hyman and Morris Silverman in 1903. It wasn’t as easy to wrap presents back then as it is today, though, because adhesive tape (胶带) wasn’t invented until 1930.
Over the years, wrapping paper has developed into what we see in stores each holiday season. But scientists say that the United States alone produces an extra 5 million tons of waste over the holidays, most of which is from wrapping paper and shopping bags. To cut down on this waste, some people carefully unwrap presents, so that the wrapping paper can be reused. Others have started to use reusable gift bags instead of wrapping paper.
1. What is the interesting part of people giving a gift?| A．Hiding their gifts and their feelings. |
| B．Giving the recipients a surprise. |
| C．Letting the recipients open gifts at once. |
| D．Following a century-old tradition. |
| A．People didn’t know wrapping paper until 1903. |
| B．Heavy brown paper has been used to wrap gifts for 100 years. |
| C．Technology made wrapping paper widely available. |
| D．Adhesive tape was first created by gift wrap companies. |
| A．The future of reusable gift bags. |
| B．The waste produced by Americans. |
| C．Wrapping paper’s influence on the environment. |
| D．People’s admiration for wrapping paper. |
| A．The popularity of wrapping gifts. |
| B．The start of wrapping gifts in paper. |
| C．The problems caused by wrapping paper. |
| D．The story behind wrapping paper. |
6 . Pollution is one of the biggest problems in the world today. In many places, rubbish is thrown into lakes and rivers.
In some cities, the air is filled with pollution.
If we do not act to improve the environment, more living things will be killed by pollution.
If we can do these, we will make the world a better place to live in.
| A．This makes some old people and children ill. |
| B．As well as people, animals are also harmed by pollution. |
| C．We can make our lakes and rivers cleaner and cleaner. |
| D．It’s time for all of us to take action right away! |
| E．Because of this, these places have already been polluted. |
| F．Trees reduce dust and help keep the air clean. |
| G．A few of us should take action to protect the environment. |
7 . Buses take about 24 million children to school in some countries each year. Some parents think they’re the safest way to get the children to school — eight times safer than riding in a passenger car. But what parents don’t expect is that most school buses also pollute the air with tail gas, and that’s bad news for the kids on the bus.
The problem is that children are breathing in tail gas when they play near idling (空转的) school buses or while they ride the bus. Studies show that over time, breathing in tail gas can cause serious health problems — one concern is that the particulate (微小的) matter in tail gas can contribute to many illnesses, plus it’s been linked to increased risk of lung cancer.
There are several different ways to clean up school buses.
A simple change that can make a big difference is to reduce idling by turning off the engine as soon as the bus is parked. Some communities have carried out voluntary “no idling” zones, which help keep the air cleaner for bus riders and everyone else.
Another choice is to switch to cleaner burning fuels. One popular choice is B20. According to the EPA, it reduces particulate matter by about 10 percent. Another clean fuel being used in school buses is natural gas.
One of the best choices for clean buses is to replace older buses with newer, cleaner running buses. Because emission (排放) standards have changed obviously over the last 30 years, you can tell a lot about how much a bus pollutes simply by finding out how old it is. Buses produced after 1990 produce much lower particulate levels than older buses, and those produced in 1994 and later are even cleaner.
1. What is beyond parents’ expectation about school buses?| A．Being safer than passenger cars. | B．Lower risk of suffering cancer. |
| C．Being faster than passenger cars. | D．The air pollution caused by them. |
| A．To save money. | B．To reduce pollution. |
| C．To increase bus life. | D．To avoid making noise. |
| A．By looking at its production date. | B．By examining its size of tank. |
| C．By checking its running distance. | D．By counting its times of idling. |
| A．Suitable Ways to Handle Old School Buses |
| B．Illnesses Students Get From School Buses |
| C．School Bus Pollution and Ways to Reduce It |
| D．Serious Results Old School Buses Bring |
8 . Drive through any suburb in the US today, and it’s hard to miss the bins that have become companions to America’s trash cans. Recycling has become commonplace, as people recognize the need to care for the environment. Yet most people’s recycling consciousness extends only as far as paper, bottles, and cans. People seldom find themselves facing the growing problem of e-waste.
E-waste rapidly increases as the techno-fashionable frequently upgrade to the most advanced device and the majority of them end up in landfills(垃圾填埋地). Some people who track such waste say that users throw away nearly 2 million tons of TVs, VCRs, computers, cell phones, and other electronics every day. Unless we can find a safe replacement, this e-waste may get into the ground and poison the water with dangerous toxins(毒素), such as lead, mercury, and arsenic. Burning the waste also dangerously contaminates the air.
However, e-waste often contains reusable silver, gold, and other electrical materials. Recycling these materials reduces environmental problems by reducing both landfill waste and the need to look for such metals, which can destroy ecosystems.
A growing number of states have adopted laws to ban dumping(倾倒)e-waste. Still, less than a quarter of this waste will reach lawful recycling programs. Some companies advertising safe disposal(处置)in fact merely ship the waste to some developing countries, where it still ends up in landfills. These organizations prevent progress by unsafely disposing of waste in an out-of-sight, out-of-mind location.
However, the small but growing number of cities and corporations that do handle e-waste responsibly represents progress toward making the world a cleaner, better place for us all.
1. What can we infer from the first paragraph?| A．Most of America’s trash cans are made of recycled material. |
| B．E-waste cannot be put into trash cans in the US. |
| C．Most Americans have realized the dangers of e-waste. |
| D．Many Americans now have access to recycling bins. |
| A．reduce. | B．heat. | C．absorb. | D．pollute. |
| A．Progress is being made in handling e-waste. |
| B．A growing number of states ship the e-waste to developing countries. |
| C．A large number of cities have begun to handle e-waste responsibly. |
| D．The world will become cleaner by disposing of waste in an out-of-sight location. |
| A．To tell us how to recycle e-waste. |
| B．To talk about the future of e-waste. |
| C．To encourage us to deal with e-waste properly, |
| D．To discuss if it’s necessary to recycle e-waste. |
9 . Millions of tons of electronic waste, known as e-waste, is produced ever year. In 2016, the world’s population make 49 million tons of electronic waste. It has been calculated that there will be more than 60 million tons by 2021. The amount of electronic waste is growing so rapidly that it has become a global problem that needs to be addressed.
What is causing the upsurge(激增)in e-waste? Technology is becoming more and more widespread, covering almost every aspect of our lives. Meanwhile, the lifespan of devices is getting shorter— many products will be thrown away once their batteries(电池)die, to be replaced by new devices. Companies update the design or software so quickly and it is usually cheaper and easier to buy a new product than to repair an old one. Since prices are falling, electronic devices are in demand around the world.
As more people buy electronic equipment, manufacturers(制造商)are beginning to face shortages of the raw material needed to make their products, so recycling and reusing materials from discarded(废弃的)products and waste makes economic and environmental sense. Recycling e-waste is practiced both formally and informally. Formal e-waste recycling usually involves taking apart the electronics, separating and sorting through the materials and cleaning them. Companies must obey health and safety rules to reduce the health and environmental harm of handling e-waste by using pollution-control technologies. All this makes formal recycling expensive.
With the amount of e-waste growing around the world, recycling alone will not be enough to handle the problem. In order to reduce e-waste, manufacturers need to design electronics that are safer, and more durable (耐用的)repairable. As a customer, you’d better get our old product repaired if possible and buy a new device only when you really need.
1. The underlined word “addressed” in paragraph 1 can be replaced by _________.| A．reduced | B．changed |
| C．controlled | D．solved |
| A．The problems caused by the upsurge in e-waste. |
| B．The reasons for e-waste’s sharp increasing. |
| C．The bad effect of updating devices. |
| D．The causes of devices’ price dropping. |
| A．Improving the quality of e-devices. |
| B．Lowering the costs of technology innovation. |
| C．Relieving companies’ lacking raw materials. |
| D．Increasing the variety of electronic products. |
| A．Recycling is the only way to reduce e-waste. |
| B．Companies should be mainly responsible for reducing e-waste. |
| C．Repairing a device is better than buying a new one. |
| D．Everyone should take action to reduce e-waste. |
10 . During a waste collection session in May at the base of Mount Qomolangma, in the Tibet Autonomous Region, participants put garbage（mostly plastics）into bags and prepared to transport them downhill.
Dressed in camouflage and a blue vest, Samdrub dragged a sack to a blue truck parked a few hundred meters away. Scores of similar sacks were piled up along the roadside, waiting to be loaded onto the vehicle. Not far away, a couple of sheep roamed the deserted land looking for grass. “Loads of it here. Loads of it. This is the fifth consecutive time we have come here and we still haven’t finished the clean-up, ” said Samdrub, 64, who, like many Tibetans only uses one name. Samdrub and her companions are members of a regular clean-up campaign organized by the Lhasa Ban-White Association, an environmental advocacy group that taps the volunteer spirit to control abandoned plastic trash, also known as “white pollution”. The volunteers are of all ages and come from different walks of life. Now retired and with time to kill, Samdrub and her friends have taken to the city’s ravines and riverbanks to battle the pollution. “In recent years, I’ve read reports that livestock choked and died after eating plastic. I was born and raised in rural Shigatse, and I know how big a financial loss that is for herders. ” Samdrub said.
Tersing Dorji, 62, a member of the Lhasa Ban-White Association, said the worst pollution results from rural farmers’ markets and the common use of plastic bags, which are super-thin and relatively expensive to recycle. “They are of various colors and very light, and when the wind blows they fly everywhere. ” she said.
A rule was then implemented by authorities in Lhasa that banned the production of super-thin plastics and ordered retailers to charge customers a fee if they wanted a regular plastic bag. The ban was later extended to the entire region. It has worked well generally, especially in supermarkets and other large operations, where additional charges for plastic bags have prompted many shoppers to opt for reusable items, such as cloth bags.
1. Why do the local volunteers like Samdrub participate in waste collection?| A．They are retired and have little time left. |
| B．They can make money by collecting waste. |
| C．They are encouraged by an environmental group. |
| D．They fight against pollution to help the Tibetans. |
| A．It will soon finish with people’s efforts. |
| B．People put it into sacks and dragged them downhill. |
| C．Clean-up campaigns are regularly organized to battle it. |
| D．It has been the main cause that leads to the death of livestock. |
| A．Caused. | B．Advised. | C．Promised. | D．Supported. |
| A．Ban on Plastic Bags |
| B．Pollution Caused by Plastic Bags |
| C．Action Against Plastic Waste in Tibet |
| D．Waste Collection Participated in by Locals |
