1 . A new study by scientists at Utrecht University concludes that about half of global wastewater is treated, rather than the previous estimate of 20%. Despite this promising finding, the authors warn that treatment rates in developing countries are still very low.
Humans and factories produce vast quantities of wastewater per day. If not properly collected and treated, wastewater may severely threaten human health and pollute the environment.
The authors use national statistics to estimate volumes of wastewater production, collection, treatment and reuse. “Globally, about 359 billion cubic metres of wastewater is produced each year, equivalent to 144 million Olympic-sized swimming pools,” says Edward Jones, PhD researcher at Utrecht University. “About 48 percent of that water is currently released untreated. This is much lower than the frequently announced figure of 80%.”
While the results show a more optimistic outlook, the authors stress that many challenges still exist. “We see that particularly in the developing world, where most of the future population growth will likely occur, treatment rates are falling behind,” Jones explains. “In these countries, wastewater production is likely to rise at a faster pace than the current development of collection and treatment basic facilities. This poses serious threats to both human health and the environment.”
The main problem, especially in the developing world, is the lack of financial resources to build basic facilities to collect and treat wastewater. This is particularly the case for advanced treatment technologies, which can be extremely expensive. However, the authors highlight potential opportunities for creative reuse of wastewater streams that could help to finance improved wastewater treatment practices.
“The most obvious reuse of treated wastewater is to increase freshwater water supplies,” Jones states. Treated wastewater reuse is already an important source of irrigation water in many dry countries. However, only 11% of the wastewater produced globally is currently being reused, which shows large opportunities for expansion.
“But freshwater increasing is not the only opportunity,” says Jones. “Wastewater also has large potential as a source of nutrients and energy. Recognition of wastewater as a resource, opposed to as ‘waste’, will be the key to driving improved treatment going forward.”
However, the authors stress the importance of proper monitoring of wastewater treatment factories, accompanied by strong legislation (法律) and regulations, to ensure that the reuse of wastewater is safe. The authors also acknowledge public acceptance as another key barrier towards increasing wastewater reuse.
1. According to the author, the meaning of treating wastewater lies in ________.| A．encouraging new scientific findings |
| B．estimating volumes of wastewater production |
| C．ensuring human health and protecting the environment |
| D．measuring how much wastewater is produced globally per day |
| A．equal | B．harmful | C．useful | D．friendly |
| A．treated wastewater can’t be used as irrigation water |
| B．wastewater production in developing countries is falling |
| C．the treatment of wastewater is more serious than estimated |
| D．public recognition plays an important role in wastewater reuse |
2 . Many people know that rubbish is a big problem on the Earth. What many people don’t know is that rubbish is becoming a problem in outer space too. Years of space exploration (探索) have left tons of “space junk” (太空垃圾) around the planet.
According to the reports of BBC, there are more than 22,000 pieces of rubbish in space around the Earth. And these are just the objects that are easy to see. There may be millions of smaller pieces of rubbish that we can’t see.
The pieces of space junk move around the planet at very high speeds. They move so fast that even a very small piece can become dangerous. If they crashed (碰撞) into each other, it could cause explosions that might even hurt people on the Earth. If the tiniest piece of rubbish crashed into a space shuttle (航天飞机), it could blow open a hole as big as an elephant.
To help solve this problem, countries around the world have agreed to limit the time their space tools stay in space to 25 years. Each tool must fall safely into the Earth’s atmosphere, or upper parts of the sky. There, it will burn up, and it won’t crash near the Earth.
1. What is becoming a problem in outer space?| A．Unseen things. | B．Many big holes. |
| C．Too much space junk. | D．A lot of explosions. |
| A．It may kill elephants. |
| B．It causes air pollution. |
| C．It moves faster than space shuttles. |
| D．It may cause explosions and hurt people. |
| A．Burn them on the Earth. | B．Limit their time in space. |
| C．Let them crash in the sky. | D．Make them move slowly. |
3 . JP Morgan Chase, the world’s biggest fossil fuel funder, has noted in an internal report leaked to Extinction Rebellion that the company “cannot rule out catastrophic outcomes where human life as we know it is threatened.”
Most of the science inside the report is not shocking to the casual reader, but the analysis is most concerned about climate change caused by fossil fuel. These include possibilities like the sudden collapse of the West Antarctic ice sheet, which would send sea levels more than 10 feet higher than current levels and displace millions of humans. Another terrible case is that the melting permafrost sends more carbon dioxide into the atmosphere, causing more warming, and in turn more the melting of ice sheets, and carbon emissions. Of course, these are already happening. The real danger behind the motivation for this internal report lies in the possibility that the Earth’s climate could reach a tipping point.
Many believe the emergence of the internal report should serve as proof convincing enough for world leaders to take collective and decisive action. However, the attitude of many world governments towards the development of fossil fuel can surely make the global situation even worse for future generations now.
However, the report doesn’t mention other banks, or even JP Morgan itself, even though these institutions are often the ones blamed in enabling this crisis, according to a Gizmodo report. “Changes are occurring at the micro level, involving shifts in behavior by individuals, companies and investors,” says the Extinction Rebellion report. It goes on to suggest that these micro-level changes “will push emissions in the right direction,” but says nothing about government oversight, or actions that many believe is necessary to reverse the current course of the climate crisis.
It’s still half way even though one has made 90 miles out of a 100-mile journey. Humans may still fail the journey if they doesn’t persist to the last. Therefore, something will have to change at some point if the human race is going to survive.
1. What does Paragraph 2 mainly tell us about fossil fuel?| A．It may cause catastrophic outcomes. |
| B．It has nothing to do with climate changes. |
| C．It kills millions of humans every year. |
| D．It has sent sea levels 10 feet higher. |
| A．Ambitious. | B．Approving. | C．Constructive. | D．Opposed. |
| A．It’s never too late to act actively. |
| B．Many hands make light work. |
| C．A bird in the hand is worth two in the bush. |
| D．A job half-done is still a job left unfinished. |
| A．A government report. | B．A science fiction. |
| C．A news report. | D．A health magazine. |
The COVID-19 pandemic (流行病) reduced global greenhouse gas emissions by 7 percent this year, released by the Global Carbon Project on Friday.
“The amount fell by 2.4 billion metric tons
UN Secretary-General Antonio Guterres on Tuesday appealed for ambitious climate action,
5 . Natural gas produces half as much CO2 when burned as coal, but that doesn't make it harmless. Climate scientists say that rising production of natural gas is becoming one of the biggest driving forces of climate change and that plans for industry expansion could stop efforts to make the Earth’s climate steady. The U. S. energy industry plans to spend hundreds of billions of dollars building pipelines and receiving stations in coming years to increase exports of natural gas in supercooled liquefied form, known as LNG(液化天然气).
Climate scientists are concerned about another greenhouse gas that leaks(泄漏) into the atmosphere during natural gas production: methane. Methane has a warming effect up to 80 or 90 times more powerful than CO2 over a 20-year timescale. Many companies say they have been doing more to find and fix methane leaks.
What about gas as a temporary “bridge fuel” to a cleaner future? The industry often describes natural gas as a vital “bridge” to help change from relying on coal-fired power to cleaner sources of energy. Advocates of natural gas argue that gas-fired power plants can provide continuous electricity, backing up wind and solar operations. Climate scientists are increasingly concerned, however, that plans to expand the industry a lot mean that using natural gas as a “bridge” could end up locking the world into a high-carbon and fast-warming future.
1. What does burning natural gas result in compared with burning coal?| A．Producing more greenhouses. | B．Making air much dirtier. |
| C．Providing less electricity. | D．Giving off 1/2 CO2 |
| A．Expand exports of LNG. |
| B．Find and fix methane leaks. |
| C．Make the Earth’s climate steady. |
| D．Build pipelines and oil stations. |
| A．burning natural gas does no harm to the climate |
| B．natural gas is a vital “bridge” to help rely on coal-burned power |
| C．the natural gas production is the smallest driving force of climate change |
| D．methane is a more powerful greenhouse gas than CO2 in a warming effect |
| A．Efforts to avoid climate disaster. |
| B．Worries about a warming future. |
| C．Plans for expanding gas industry. |
| D．Ways to produce cleaner natural gas. |
6 . With roaring ships, hammering oil drill, industrial fishing and coastal construction, humans have strongly influenced the underwater soundscape (声音景观) over the past couple of hundred years — in some cases posting a threat to whales, dolphins and other ocean creatures. Until recently, underwater sound pollution had not attracted the same attention. Now, a new paper published in the journal Science lays out the impacts, demonstrating that noise pollution can be just as harmful to the ocean environment as other kinds of pollution.
Even the cracking of glaciers and any drop of rain falling on the water’s surface can be heard deep under the sea. Sea life uses sound to study their habitat, and to keep in communication with each other. They also use sound by listening to know something about their environment.
“It’s a long-lasting problem that certainly weakens the animals all the way from individuals to populations,” says lead author Carlos M. Duarte, distinguished professor at Saudi Arabia’s King Abdullah University of Science and Technology (KAUST), “We are hoping that this report will not only reveal elements of how humans impact the ocean through sound pollution, but that it will also bring the topic to the attention of policymakers who will be able to act based upon the very real solutions.”
Marine (海洋) ecologist Kirsten Thompson of the United Kingdom’s University of Exeter, who was not involved in the study, said the report could not have come at a better time. “It summarizes the fact that we are in this new phase of human-caused noise in our oceans that is having a dramatic impact on different species.” What matters most, she notes, is the fact that the paper “doesn’t just point at the problem, it shows how to solve it.”
Unlike plastic pollution or fertilizer runoff, noise pollution will not take years to fix. The moment we switch our noise off the impact disappears, Duarte says, pointing to marine life surveys conducted around April 5, 2020. Having the world use more renewable energy would lessen the need to drill for oil and gas. The international team of researchers also called for a global regulatory framework for measuring and managing ocean noise.
1. Which of the following threatens ocean creatures?| A．Travel industry. | B．Human activities. |
| C．Construction companies. | D．Sailing off the coast. |
| A．Ocean animals can’t fall asleep. | B．It causes the cracking of glaciers. |
| C．It’s a signal to the lower sea level. | D．It disrupts the behavior of sea life. |
| A．She is one of the paper’s co-authors. |
| B．The report does not come at the right time. |
| C．The solutions are already available. |
| D．The report has raised great attention from seamen. |
| A．Technical advances and regulation. |
| B．A policy to measure the depth of ocean. |
| C．A global ban on drilling for oil and gas. |
| D．Noise standards for cars and trucks. |
7 . Electronic waste, also known as e-waste, consists of a discarded phones, printers, TVs, electric toothbrushes and many other electronic goods no longer in use.
A shocking 53. 6 million tons of electronic waste was generated worldwide in 2019 — less than a fifth of which was recycled, according to UN's Global E-waste Monitor 2020 report.
Of the total e-waste last year, Asia contributed the biggest amount — 46.4 per cent — followed by the Americas(24.4 percent), Europe (22.3 percent), Africa (5.4 percent) and Oceania (1.3 percent).
The combined heap of e-waste for 2019 averaged 7. 3 kg for every man, woman and child on Earth. The UK averaged the second-biggest in the world, at 23.9 kg, behind Norway, which averaged 26kg.
The report also reveals that just 17.4 percent of the e-waste was properly collected and recycled. E-waste is a health and environmental hazard (危害), containing hazardous substances such as mercury, which damages the human brain.
After a device is discarded and e-waste is warmed up, toxic chemicals are released into the air, damaging the atmosphere. E-waste in landfills can also seep (渗透) toxic materials into groundwater, affecting animals and plants.
Gold, silver, copper, and other high-value materials were collectively valued at $57 billion. However, they were mostly dumped or burned rather than being collected for treatment and reuse. In countries with developing markets, an increasing number of household electronics like refrigerators, air conditioners, and lamps are now being bought, leading to the rapid increase in e-waste. A global obsession with smart phones, which tend to be replaced by an updated model after a year, also helps build e-waste piles.
It's not that countries don't have policies to fight e-waste since 2014, the number of countries that have adopted a national e-waste policy has increased from 61 to 78, the report says. But advances are slow, enforcement (执行) is poor, and policies fail to encourage the collection and proper management of e-waste. The lack of effective policies around the world needs to be addressed (解决) as soon as possible.
1. According to official figures, how much e-waste was recycled in 2019?| A．53.6 million tons. | B．10.8 million tons. |
| C．9.3 million tons. | D．20.1 million tons. |
| A．health condition | B．electronic products |
| C．energy resources | D．environmental protection |
| A．Tolerant. | B．Indifferent. | C．Ambiguous. | D．Critical. |
| A．E-waste is increasing. | B．E-waste is being reduced. |
| C．E-waste is harmful to people. | D．E-waste is being encouraged. |
8 . People are increasingly wearing gloves and masks in public, in order to protect themselves and reduce the spread of COVID-19 (新冠病毒). Obviously, though, those gloves and masks need to come with proper disposal (处理) directions.
To bring awareness to the current problem, Algarra started a campaign , TheGloveChallenge. “If you see a glove, snap a shot,” Since launching the campaign on March 23, Alagarra said they’ve received over 700 pictures from people all over the United States and in other countries including Italy, Spain, Portugal, France, Canada and Japan.
Everywhere you look in America, it seems, there are discarded gloves and masks in streets and parking lots, left behind by people who couldn’t be bothered to find a nearby trash bin. It got so bad in New York City over the weekend, that Ryan McKenzie, who lives in Manhattan, began cleaning it up. “I couldn’t believe what I saw so I went to the store and bought a grabber to pick them up. It’s hateful and needs to be brought to people’s attention. "
After receiving so many reports of gloves and masks left behind in Parsippany, New Jersey, the local police department issued a warning: “ Clean up and properly deal with your used gloves and wipes. If you do not, you can be charged and fined up to $ 500.”
Of course, it shouldn’t take a heavy fine to encourage people to clean up after themselves. There are quite a few reasons why leaving your gloves behind is among the worst things you can do during this pandemic. If the used gloves have the virus on them, you could infect essential workers (一线工人). The concern that led you to put on gloves in the first place shouldn’t be reserved for you and your family; you should be just as concerned about others getting corona virus, too.
1. What is the purpose of the campaign?| A．To praise Algarra’s generous behavior. | B．To collect as many pictures as possible. |
| C．To get recognition from other countries. | D．To raise people’s awareness of the problems. |
| A．Worn-out. | B．Newly-bought. | C．Thrown-away. | D．Highly-praised. |
| A．We should show concern for others’ health. |
| B．Facial masks should be worn in a proper way. |
| C．More gloves should be set aside for future use. |
| D．Essential workers can suffer CO VID-19 easily. |
| A．TheGloveChallenge, a Campaign Dealing with Viruses |
| B．Stop Throwing Used Gloves and Masks on the Ground |
| C．Used Gloves and Masks Do Harm to the Environment |
| D．Ryan McKenzie, the First Man to Pick up Masks & Gloves |
9 . A recent study published in the journal Science Advances has revealed that the United States ranks as high as third among countries contributing to coastal plastic pollution. The new research challenges the once-held assumption that the US is adequately “managing” its plastic waste. A previous study using 2010 data that did not account for plastic waste exports had ranked the US 20th, globally, in its contribution to ocean plastic pollution.
Using plastic waste generation (产生) data from 2016 — the latest available global numbers — scientists calculated that more than half of all plastics collected for recycling (1.99 million tons of 3.91 million tons collected) in the US were shipped abroad. Of this, 88% of exports went to countries struggling to effectively manage plastics; and between 15-25% was low-value or contaminated (受污染的). It means it was unrecyclable. Taking these factors into account, the researchers estimated that up to 1 million tons of US-generated plastic waste ended up polluting the environment beyond its own borders.
Using 2016 data, the paper also estimated that between 0.91 and 1.25 million tons of plastic waste generated in the US was either littered or illegally dumped into the environment domestically. Combined with waste exports, this means the US contributed up to 2.25 million tons of plastics into the environment. Of this, up to 1.5 million tons of plastics ended up in coastal environments. This ranks the US as high as third globally in contributing to coastal plastic pollution.
“The US generates the most plastic waste of any other country in the world, but rather than looking the problem in the eye, we have outsourced it to developing countries,” said Nick Mallos, senior director of Ocean Conservancy’s Trash Free Seas program and a co-author of the study. “The solution has to start at home. We need to create less, by cutting out unnecessary single-use plastics; we need to create better, by developing innovative new ways to package and deliver goods; and where plastics are inevitable, we need to greatly improve our recycling rates.”
“Previous research has provided global values for plastic input into the environment and coastal areas, but detailed analyses like this one are important for individual countries to further assess their contributions,” said Dr. Jenna Jambeck, Distinguished Professor at the University of Georgia’s College of Engineering and a co-author of the study. “In the case of the United States, it is critically important that we examine our own backyard and take responsibility for our global plastic footprint.”
1. Compared with the previous study, the new one ________.| A．covers data more comprehensively |
| B．excludes plastic waste shipped abroad |
| C．is contrary to the latest global numbers |
| D．challenges the recycling way of plastics |
| A．Over half of it ended up polluting the environment outside the US. |
| B．Most of its exported plastic waste wasn’t worth recycling. |
| C．Less than half of it was actually recycled domestically. |
| D．More of it is littered or illegally dumped than exported. |
| A．plastic pollution in developing countries is more serious |
| B．US has been irresponsible in dealing with its plastic waste |
| C．US should cooperate with others to handle its plastic waste |
| D．innovative means are needed to eliminate single-use plastics |
| A．Plastic Pollution Great Risk to Marine Life |
| B．US Top Contributor to Coastal Plastic Pollution |
| C．Plastic Waste Major Source of Coastal Pollution |
| D．Recycling Effective Way to Address Plastic 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 |
