The Ming City Wall Ruins Park, one of the best parks in Beijing,
The Ming Dynasty City Wall from Dongbianmen to Chongwenmen is one of the only two remaining Ming Dynasty City Walls in Beijing.
Using a simple design, the park highlights the beauty of the
2 . A worldwide shift from fossil fuel-powered cars to electric vehicles could significantly reduce the amount of carbon dioxide that humans emit to the atmosphere. But current strategies for vehicle electrification (电气化) can also shift some pollution to communities already suffering under higher economic, health and environmental burdens, researchers warn.
California, which leads the United States by a mile when it comes to EV adoption, offers a window into this evolving problem. The state is aggressively seeking to reduce its carbon footprint and has made substantial increases in wind and solar power generation as well as in the promotion of electric vehicle purchases. One tool the state has used is the California Clean Vehicle Rebate Project, or CVRP, which kicked off in 2010 and offers consumers money back for the purchase of new EVs.
Now, an analysis of the CVRP’s impact on the state’s air quality from 2010 to 2021 reveals both good and bad news, researchers report May 3 in PLOS Climate.
The good news is that the CVRP is responsible for making a dent in the state’s overall CO2 emissions, reducing them by about 280,000 metric tons per year on average. The bad news is that the most disadvantaged communities in the state didn’t see the same overall improvement in air quality. Those communities in fact saw an increase in one type of air pollution, tiny particulates known as PM2.5. That increase may be indirectly related to putting more EVs on the road. Although electric vehicles themselves don’t produce PM2.5 from their tailpipes, increased electricity generation, if it’s not fossil fuel-free, can. Renewable resources, including rooftop solar cells, supplied about half of California’s electricity in 2022. But natural gas-fired power plants still provide a large part of the state’s power.
“Electric vehicles are often incorrectly referred to as ‘zero-emission vehicles’, but they’re only as clean as the underlying electric grid (电网) from which the energy is sourced,” Mejía-Duwan says. The most disadvantaged 25 percent of the state’s communities also contain 50 percent of the power plants, the team found.
1. What do we know from paragraph 2?| A．California takes the lead in environmental protection. |
| B．Wind and solar power generation has dominated California. |
| C．California’s carbon footprint has been reduced as planned. |
| D．The launch of CVRP is intended to promote electric vehicle purchases. |
| A．adjustment. | B．shift. | C．reduction. | D．increase |
| A．Putting more EVs on the road. | B．Increased electricity generation. |
| C．Warming climate. | D．Increased rooftop solar cells. |
| A．Zero emission for EVs can’t be ensured nowadays. |
| B．‘Zero emission’ isn’t good enough to describe EVs. |
| C．EVs, with no zero emission, shouldn’t be advocated. |
| D．EVs have a promising future as zero emission vehicles. |
3 . Mars is truly a fascinating planet for those of us here on Earth. It is about half of the size of Earth and is often referred to as the “Red Planet” because of its red surface.
Mars has seasons like Earth, but the seasons there are twice as long as the seasons on Earth. Mars also has an atmosphere, but it is very thin and made up mostly of carbon dioxide. Because of its thin atmosphere and greater distance from the Sun, Mars is much colder than Earth. However, Mars does have weather, with clouds and winds. The poles on Mars are a lot like Antarctica, capped by ice, but much of Mars’s ice is made from carbon dioxide, not water.
Many scientists believe that studying Mars can help us answer some of the key questions about our planet Earth, or even the universe. But missions to Mars have never been easy. Facing great challenges, many countries will still continue their explorations. Launching the first Mars probe (探测器) from Wenchang around 2020 is China’s first step to explore the “Red Planet”
The Chinese Mars probe is made up of three parts: the orbiter, the lander, and the rover. Entering the Earth-Mars transfer orbit, the Mars probe separates from the launch vehicle. Then the space-to-ground communications link is created. Controllers on Earth guide it into the orbit around Mars. After collecting detailed information about the landing area, the probe is ready for the landing. The orbiter and the lander separate. The orbiter stays in the orbit for at least a year to photograph key areas and monitor the planet’s environment, while the lander heads down to the surface of Mars.
Nine kilometres above the planet, a large parachute(降落伞) opens to slow the landing craft as it falls. After removing the parachute, the lander chooses a safe place to land, where the Martian rover can start operations, collecting and transmitting data back to Earth. After receiving its orders from Earth, the rover leaves the landing point and begins to explore the surface of Mars.
1. How does the writer develop paragraph 2?| A．By making a list. | B．By giving examples. |
| C．By making comparisons. | D．By analyzing cause and effect. |
| A．China has been exploring Mars for many years. |
| B．Mars exploration is not so difficult for some countries. |
| C．Some countries will stop Mars exploration due to great difficulties. |
| D．Mars exploration can help us better understand the earth and universe. |
① The probe is ready for the landing.
② The Mars probe separates from the launch vehicle.
③ Controllers on Earth guide it into the orbit around Mars.
④ The probe collects detailed information about the landing area.
| A．①②③④ | B．④③①② | C．②③④① | D．②③①④ |
| A．It slows the landing craft as it falls. |
| B．It collects and transmits data back to Earth. |
| C．It helps the lander to find a safe place to land. |
| D．It guides the probe into the orbit around Mars. |
China has detailed measures to boost its climate change monitoring and risk prevention capabilities, marking a significant step forward in the country’s efforts
The country will seek to build a climate-resilient society
The first time China
As the global climate
5 . World in a dish: The garden path
Imagine a plate holding two strawberries, identical in appearance. One came from the supermarket, meaning it was probably harvested when it was still unripe, loaded onto a refrigerated truck and driven hundreds of miles.
The first one will probably taste like a slightly soft cucumber, with light berry flavors and strong sour tastes. The second is likely to be sweet and floral; the flavor will stay in the mouth, as the pleasant smell will on the hands.
A garden, especially in the early years, can also produce little but frustration. Beginning gardeners may plant the wrong crops for their soil. Squirrels have an annoying habit of taking single bites of cucumbers, beans and tomatoes, then leaving the rest on the vine (藤) to rot.
No matter.
| A．The real joy of gardening is the time spent doing it. |
| B．Growing your own vegetables ensures a reliable supply. |
| C．Well-stocked supermarket shelves are available all week. |
| D．Some columnists long considered gardening a waste of time. |
| E．However, supermarket strawberries are not entirely without advantages. |
| F．By the time it reached the plate it may have been off the vine for two weeks. |
| G．And even expert gardeners can lose a season's harvest to uncooperative weather. |
6 . Called “America’s wolf”, the red wolf is the only large predator whose historic range is found entirely within the United States, stretching from Texas to New England. But hunting gradually reduced its range, and it was declared extinct in the wild in 1980.
Recovery efforts in the wild began in 1987 on the Alligator River National Wildlife Refuge. In a ground-breaking successful experiment, eight captive (圈养的) wolves were released this year into North Carolina, eventually growing into a population over 100, reaching a peak of around 120 wolves in 2012. But illegal hunting and management changes by the Fish and Wildlife Service resulted in their numbers plummeting.
In the spring, conservationists celebrated a small bit of good news when four captive-born pups (幼兽) were placed into a cave and successfully adopted by a wild red wolf mother. Meanwhile, another four adults were released into the wild. The pups are thought to be still alive and healthy. But the adults didn’t go well. In the months after release, three were struck by cars and killed, and the fourth was fatally shot on private land.
To boost the population after these deaths, the U. S. Fish and Wildlife Service announced in November that it planned to release nine adult red wolves into their recovery area this winter, land within and surrounding two wildlife reserves.
The Service also recently announced it would withdraw a 2018 proposal to shrink (缩小) the red wolves’ protected area in North Carolina by 90 percent, after a lawsuit accused the agency of going against the Endangered Species Act. Ron Sutherland of the Wildlands Network says it’s crucial that the agency has abandoned this wrong-headed proposal. And yet the situation now is even more urgent than it was in 2018 — this should launch the conservation community in the U. S. into crisis mode to save this species and bring it back from the extinction.
1. What does the underlined word “plummeting” in paragraph 2 mean?| A．Promising. | B．Declining. | C．Multiplying. | D．Increasing. |
| A．The released wolves lived well. |
| B．The population boosted after the release. |
| C．The red wolf faced greater threat than before. |
| D．The released red wolves still needed protection. |
| A．Shrink the red wolves’ reserves. |
| B．Make a proposal to protect the red wolves. |
| C．Put some red wolves in some specific places. |
| D．Force the protected area into the state of emergency. |
| A．The protection of red wolves. | B．Challenges faced by red wolves. |
| C．Reasons for red wolves extinction. | D．The relationship between red wolves and humans. |
7 . There is a kind of climate pollution that we can’t see clearly. It isn’t in our rivers, lands or skies, it is in our minds. When climate disinformation goes unchecked, it spreads like wildfire, undermining the existence of climate change and the need for urgent action.
Like the biosphere that sustains us, the health of our information ecosystems is vital to our survival. As an artist, I feel a responsibility to create new ways of seeing the disinformation that has come to define the age of fake news.
Social media sites are honed to grab our attention. Using sophisticated algorithms, the corporations behind them decide what billions of people see around the world, dictated by what keeps you hooked, but also by what the companies paying social media sites choose to put in front of you.
Powerful corporate actors deploy clever influence campaigns via ads targeted at specific users based on what social media firms know about those people. Major oil and gas companies have spent billions of dollars over the years persuading consumers about their green proofs, when only 1 per cent of their expenditure in 2019 was on renewable energy. This is known as corporate greenwashing. Still, fossil fuel firms maintain that their climate policies are “responsible” and “in line with the science”.
To expose the scale of corporate greenwashing online, I was part of a team that recently launched Eco-Bot.Net. Co-created with artist Rob “3D” Del Naja of the band Massive Attack and Dale Vince, a green entrepreneur, Eco-Bot. Net’s AI-powered website ran throughout the COP26 climate summit, exposing climate change misinformation by releasing a series of data drops for heavily polluting sectors, including energy, agribusiness and aviation.
Academic definitions of climate disinformation and greenwashing were used to unearth posts across Facebook, Instagram and Twitter and visualize them on our website. Eco-Bot.Net then flagged greenwashing ads and posts on the original social media site with a public health warning.
By digging into our data, journalists have already revealed that companies are targeting specific demographics in order to influence public perceptions about climate change – and even alter government policy.
One data drop focused on the 100 biggest fossil fuel producers, companies that have been the source of 71 per cent of global carbon emissions. It found that 16 of these companies ran 1705 greenwashing and climate misinformation ads globally on Facebook and Instagram this year. In total, they spent more than £4 million creating influence campaigns that generated up to 155 million impressions.
Social media companies could end most of the harms from climate disinformation on their platforms if they wanted to. Flagging systems were swiftly introduced to warn users of posts containing disinformation about covid-19. The scientific consensus on human-caused global warming has been resolute for decades, so why can’t a similar flagging system be implemented for related disinformation?
It is true that Twitter and Facebook have both introduced climate science information hubs, but these are little more than PR exercises that fail to directly tackle climate disinformation on any kind of scale.
This epidemic of climate change disinformation on social media is eroding collective ideas of truth. In this post-truth age of disinformation, we hope that the public, the press and policy-makers will be able to use our data findings to see what is hidden by what we see online.
For the first time, we can witness the regional scale of corporate greenwashing. The era of climate denial and delay is largely over — except, as Eco-Bot.Net has revealed, on social media.
1. What does the word “undermine” in the first paragraph mean in the passage?| A．Dig holes in the ground. | B．Make sth weaker at the base. |
| C．Increase or further improve. | D．Put a stop to sth. |
| A．give the readers a precise definition of corporate greenwashing |
| B．show the dishonest claim by fossil fuel companies on their responsible climate policies |
| C．demonstrate the huge investment the corporations made to exert powerful influence on the targeted social media users based on algorithm |
| D．emphasize the tens of millions of dollars spent on renewable energy |
| A．energy | B．agribusiness | C．aviation | D．social media |
| A．They are willing to help but feel powerless to do so. |
| B．They have the ability to make a change but refuse to do so as there are controversies over climate changes. |
| C．They have the ability to make a change and have made some sincere but fruitless efforts on it. |
| D．They lose their integrity in face of the money from the big corporations. |
8 . Throughout history, many species of animals have been threatened with extinction. When Europeans first arrived in North America, more than 60 million buffalo (水牛) lived on the continent. Yet hunting the buffalo was so popular during the 19th century that by 1900 the animal’s population had fallen to about 400 before the government stepped in to protect the species. In some countries today, the elephant faces a similar challenge, as illegal hunters kill the animals for the ivory in their tusks.
Yet not all animals with commercial value face this threat (威胁).The cow, for example, is a valuable source of food, but no one worries that the cow will soon be extinct. Why does the commercial value of ivory threaten the elephant. while the commercial value of beef protects the cow?
The reason is that elephants are a common resource, while cows are private goods. Elephants wander freely without any owners. The hunter has a strong motivation to kill as many elephants as he can find. Because illegal hunters are numerous, each has only a slight motivation to preserve the elephant population. By contrast, cattle live on farms that are privately owned. Each farmer makes great effort to maintain the cattle population on his farm because he harvests the benefit of these efforts.
Governments have tried to solve the elephant’s problem in two ways. Some countries, such as Kenya and Uganda, have made it illegal to kill elephants and sell their ivory. Yet these laws have been hard to put into effect, and elephant populations have continued to dwindle. By contrast, other countries, such as Malawi and Namibia, have made elephants private goods and allowed people to kill elephants, but only those on their own property.
With private ownership and the profit motive now on its side, the African elephant might someday be as safe from extinction as the cow. The ancient Greek philosopher Aristotle pointed out the problem with common resources: “What is common to many is taken least care of, for all men have greater regard for what is their own than for what they possess in common with others.”
1. Why does the author mention buffalo in paragraph 1?| A．To introduce a similar threat to elephants. |
| B．To provide an example of species extinction. |
| C．To offer an explanation for government policies. |
| D．To present the statistics of the buffalo in America. |
| A．They are under different law protection |
| B．They attract different groups of hunters |
| C．They contain different commercial value |
| D．They represent different ownership types |
| A．Bans on killing elephants for ivory |
| B．Effective laws for elephant protection. |
| C．Methods of making elephants private goods |
| D．Government policies on the elephant’s problem |
| A．People hold little regard for others’ property |
| B．People want to profit from common resources |
| C．People care more about their own possession |
| D．People tend to take what they own for granted |
