1 . The green revolution in the 1960s was one of the greatest achievements in human history. By promoting more productive varieties of wheat and, especially, rice, scientists in India, Mexico, China and the Philippines doubled Asia’s rice yields from 1965 to 1995.
But the world has reached a crossroad again. By one estimate, the world will need to produce almost a third more rice by 2050. Yet rice production has increased by less than 1% a year over the past decade.
This has many explanations. Urbanization and industrialization have made labour and farmland scarcer (稀缺的). Overuse of chemicals and irrigation have poisoned soils and dried up groundwater. But the biggest reason may be global warming that often leads to extreme conditions. Heavy rains and droughts last year in India, the world’s biggest rice exporter, led to a reduced harvest and an export ban. Floods in Pakistan, the fourth-biggest exporter, wiped out 15% of its rice harvest. Rising sea-levels are causing salt to enter the Mekong Delta, Vietnam’s “rice bowl”.
It is getting worse. Rice is not just a victim of climate change, but also a contributor to it. It is a bigger source of greenhouse gas than any foodstuff except beef. If you count the destruction of forestland for rice fields, that footprint is even bigger.
Therefore, governments need to attract producers and consumers away from rice. India and Indonesia are promoting millet, which is more nutritious and uses much less water. Canceling subsidies (补贴) that favour rice over other crops would make such efforts more effective. India, for example, purchases rice from farmers, often at above-market rates, then distributes it as food aid to the poor. It should make its interventions more rice-unfriendly, by replacing subsidies and free rice with income support for farmers and the poor. That would encourage farmers to choose the best crop for their local conditions — much of India’s agricultural north-west would switch from rice to wheat overnight. Poor Indians would be free to choose a more balanced diet. As a result, it would correct a market unfavorable to environment and health.
1. What can we know about the green revolution in Asia?| A．It has remarkably reduced the use of water and chemicals. |
| B．It once increased rice production by more than 3% a year. |
| C．It has popularized more productive crops, especially wheat. |
| D．It has been mainly led by scientists from America and Europe. |
| A．Worsening global warming. | B．Unnecessary bans on rice export. |
| C．Lowering prices for the crop. | D．Urbanization and industrialization. |
| A．Expand the planting of rice. | B．Give rice farmers more subsidies. |
| C．Replace rice with better local crops. | D．Distribute rice as food aid to the poor. |
| A．Achievements of the Green Revolution | B．Efforts to Promote More Suitable Crops |
| C．Consequences of the Green Revolution | D．Ideas to Fix the Current Global Rice Crisis |
2 . Whether due to genuine concern for the environment or the widespread criticism of plastic among consumers, many companies have invested heavily in reducing their use of plastic packaging, which may indeed have a positive environmental impact. But another trend that’s grown out of the anti-plastic movement is a lot less positive: overpackaging. More and more brands have begun adding unnecessary paper packaging on top of plastic packaging in order to make their products look more environmentally friendly, without actually reducing plastic waste.
Unfortunately, there’s a very good reason companies are adopting this clearly problematic approach. Through a series of eight studies with more than 4,000 participants, we found that consumers will accept a product’s packaging as more environmentally friendly if it’s plastic with an additional layer of paper than if the product is visibly packaged in identical plastic packaging but without the paper. These perceptions (认知) in turn make consumers both more likely to buy a product, and willing to pay more for it.
Part of what makes this overpackaging trend particularly harmful is that it is much valued by consumers who reported engaging in more eco-friendly behaviors. They were more likely to view overpackaged products as environmentally friendly. As a result, the very consumers who are most interested in pushing companies to make sustainable choices are likely unintentionally encouraging the environmentally harmful practice of overpackaging.
The good news is, overpackaging isn’t the only way to signal sustainability and attract such consumers. In our studies, we found that instead of additional paper packaging, simply adding a minimal packaging sticker to plastic packaging could clarify the misperception that overpackaged products are more sustainable, Especially for products for which plastic is necessary to ensure safe transportation and lengthen shelf life, this kind of clear messaging can help reduce consumers, discrimination against the responsible use of plastic packaging.
Of course, minimal packaging stickers certainly should only be used if a brand has actually ensured that it is using the minimal possible packaging, ideally under the supervision of a trade organization or regulatory body that maintains clear, consistent standards.
1. What can we learn about overpackaging according to paragraph 1?| A．It calls for less investment. |
| B．It involves the proper use of paper. |
| C．It has a positive environmental impact. |
| D．It causes over-consumption of materials. |
| A．They care about the environment. |
| B．They are always following the trend. |
| C．They like comparing products’ qualities. |
| D．They prefer beautifully-decorated products. |
| A．To help products stay fresh longer. |
| B．To improve the brand’s popularity. |
| C．To correct consumers’ misunderstanding. |
| D．To present more information about products. |
| A．Minimal packaging stickers have been widely used. |
| B．Advantages of minimal packaging stickers are overestimated. |
| C．The use of minimal packaging stickers should be strictly regulated. |
| D．The use of minimal packaging stickers is a solution to over-packaging. |
Climate protection strategy is fascinating the globe during the 19th Asian Games, not just athletic talent .
Avoiding fireworks during the opening ceremony promotes environmental awareness. Traditional fireworks displays are fun
The Games Village gave residents a “Low Carbon Account” as part of the green measures. Carbon points
4 . Vishwanath Mallabadi Davangere has a unique talent for turning abandoned items into amazing works of art. From metal and plastic to old devices and circuit boards, Vishwanath selects only the finest “good stuff” with potential for transformation.
Vishwanath’s father was a well-known sculptor and painter, but he had hopes of his son becoming a doctor. But Vishwanath had other ideas. He was fascinated with upcycling second-hand objects from a young age, and decided to pursue a Bachelor of Fine Arts in Applied Art. Even as a high-level administrator at Wipro, working in Talent Transformation, Vishwanath wouldn’t shake his passion for eco-art. In his free time and on the weekends, he devoted himself to experimenting with e-waste and creating one-of-a-kind masterpieces before retiring two years ago.
With India facing a growing e-waste crisis, producing 10.1 lakh tonnes in 2019-20 with only 22.7% recycled, Vishwanath’s passion for recycling is more important than ever. As he learned more about the harm e-waste was causing to the environment, he took his art to the next level creating paintings and sculptures that spread awareness about this urgent issue.
From computer keyboard keys to data cards and even wristwatch parts, Vishwanath has transformed over 500 pieces of e-waste into amazing pieces of art! He has created a six-foot-tall sculpture, eco-jewellery and even wearable art for a fashion show. One of his masterpieces—an awesome landscape—was inspired by Vincent van Gogh’s The Starry Night.
In just a few short minutes, he can turn pieces of e-waste into great pieces of jewellery. When it comes to sculptures, the process might take weeks or even months. But it’s all worth it because sustainable initiatives and upcycled art are fashionable these days. Companies everywhere are looking to adopt a more sustainable culture, and Vishwanath’s art is the perfect addition to any eco-friendly office or home.
1. What was Vishwanath’s occupation before retirement?| A．A doctor. | B．A famous sculptor. |
| C．A conservation scientist. | D．A senior manager of a firm. |
| A．The features of Vishwanath’s works. | B．The seriousness of e-waste in India. |
| C．The motivation for Vishwanath’s creations. | D．The achievements of Vishwanath. |
| A．The Starry Night. | B．The eco-jewellery. |
| C．An impressive landscape. | D．A six-foot-tall sculpture. |
| A．It’s promising. | B．It’s unpredictable. |
| C．It will lose its appeal. | D．It won’t be accepted by companies. |
5 . A 36-year-old man is attempting to set a new record by rowing 5,000 miles solo from Hawaii to Australia while dedicating his journey to saving the planet.
Tez Steinberg, of Boulder, Colorado, plans to leave Hawaii on December 20 on his solo trip across the Pacific Ocean. Actually, it’s the second leg of an adventure that began in 2020 when he rowed solo for 71 days from Monterey, California, to Oahu, Hawaii.
Steinberg began to experience depression while he was in college. At the time, he found a solution by participating in endurance sports. “It helped me feel better,” he said. “But as I went farther and farther, pushing myself through marathons and triathlons, I discovered this belief in myself that I’m so much stronger than I thought I was.”
However, in 2016, his life took a big turn after the sudden death of his dad. The blow caused him to challenge himself even more by solo rowing across an ocean. After successfully completing the task without any prior professional experience, Steinberg realized he could use his story to inspire other people to believe in themselves and their potential to change and grow.
Recalling the first journey at sea, he said, “I was so surprised by how beautiful the ocean was, and also how much plastic I saw. So it was that realization at sea that led me to want to go back out again.” Inspired by his first expedition, Steinberg’s new mission is to focus on ocean conservation, and specifically ocean plastics. “All the plastic I saw at sea was just heartbreaking,” he said.
The upcoming voyage will be part of an attempt to break a Guinness World Record. Nevertheless, breaking records isn’t his priority. “Personally, although a world record is exciting, that’s not why I’m in it. The world record is fun for media attention, but through it we can get more donations, support and action for ocean plastics,” Steinberg said.
1. What can we learn about Steinberg from paragraphs 3 and 4?| A．He suffered academically. |
| B．He was expert in extreme sports. |
| C．He gained confidence from motivating others. |
| D．He turned to challenging tasks in face of difficulties. |
| A．To recover from the state of depression. |
| B．To relieve the pain of his father’s passing. |
| C．To inspire other people to fulfil their dreams. |
| D．To challenge himself to achieve the impossible. |
| A．To break a world record. | B．To establish a good reputation. |
| C．To contribute to ocean protection. | D．To urge governments to take action. |
| A．Stubborn and ambitious. | B．Self-centered and sympathetic. |
| C．Determined and knowledgeable. | D．Responsible and courageous. |
6 . The spotlight shines brightly on the dancers as they gracefully leap across the stage. But what sets this performance apart from others is not just the skill and grace of the dancers but the unique and meaningful use of recycled materials in their costumes and set design.
The famous Japanese ballet company, K-Ballet, recently showed their new production “Plastic”, which aims to raise awareness about the global plastic pollution crisis. The costumes worn by the dancers are made from used bubble wrap, the stage is surrounded by four massive walls constructed from recycled plastic bottles, and even the 100 umbrellas used in the performance were found abandoned in the streets of Tokyo.
The dancers, including guest star Julian MacKay, look like space-age creatures with hand-cleaned plastic bottles tied to their bodies as they dance on stage. MacKay, from the United States, notes that the issue of plastic waste “really hasn’t gotten that spotlight” in the dance world and believes that the performing arts can inspire people to take action.
The problem of plastic waste is a pressing one. According to the Organisation for Economic Cooperation and Development (OECD), plastic waste has doubled globally in the past 20 years, and only 9 percent of it is successfully recycled. The United Nations predicts that the volume of plastic entering the oceans will nearly triple (成为三倍) by 2040.
K-Ballet plans to keep its costumes and set design for at least a year with the hope of restaging the show and after that, the bottles will be recycled by Shirai, a waste management company. The chow’s experience and message moved audience members who attended the performance. Ayumi Kisaki, a 30-year-old actor, said, “It’s an issue I don’t usually think about. But these dancers highlighting the issue of plastic call me and all of us to find ways to recycle and reuse the plastic.”
1. How did K-Ballet draw the public’s attention to its “Plastic”?| A．By applying new equipment and set design. | B．By exhibiting new plastic products on the stage. |
| C．By creatively using recycled materials in dance. | D．y inviting American dance star Julian MacKay. |
| A．It is the best art in the dance world. | B．It is a pressing show to the audience. |
| C．It will inspire more people to take up dancing. | D．It integrates art with environmental protection. |
| A．Introduce another topic of the text. | B．Add some background information. |
| C．Provide some advice for the readers. | D．Summarize the previous paragraphs. |
| A．Impressive. | B．Entertaining. | C．Depressing. | D．Logical. |
7 . Re-purposing diapers to make building materials would reduce the amount of garbage that goes to a landfill. It could also make homes more affordable. Maybe giving used diapers a new use could help tackle both problems.
Building material—especially those that are used for strengthening structures — are often expensive. They’re often the biggest hurdle to making homes affordable. So researchers have previously investigated unusual materials that could save costs. These materials included many that would otherwise pile up as waste, such as fly ash.
“There is a big need in developing countries such as the Southeast Asian nation, Indonesia. There, demand for low-cost housing outstrips what’s available. The number of people in Indonesia’s cities has climbed by about 4 percent per year in the last 30 years. By 2025, more than two-thirds of Indonesians are expected to live in urban areas. Indonesia’s population boom is intensifying the demand for housing,” says Siswanti Zuraida, an environmental engineer in Indonesia.
“Despite the need for more affordable housing, there are significant problems that stand in the way of adopting diapers,” Zuraida says. Used diapers contain wood pulp, cotton and plastic, which are potentially useful building materials. Diapers plastic components would have to be separated from the organic fibers, a complicated recycling process currently available only in developed nations. And Indonesia’s building regulations restrict together-materials to bricks, wood, steel and concrete (which is used to hold bricks together) — materials that also bear a high cost in terms of carbon emissions.
But reusing diapers might not be that environmentally friendly, especially on a large scale. “It’s tricky to separate dirty diapers from waste and disinfect them. So it would take a lot of energy to recycle diapers. It’s maybe worthwhile to start thinking about ways to replace single-use diapers with something less frequently thrown away,” says Christof Schrofl, a chemist who works at Technische Universität Dresden in Germany.
1. Which statement describes the idea of re-purposing diapers best?| A．No pains, no gains. | B．Waste not, want not. |
| C．Kill two birds with one stone. | D．Great minds think alike. |
| A．Phase | B．Barrier. | C．Goal. | D．Advantage. |
| A．It is illegal to use diapers as building material in Indonesia. |
| B．Making building materials has little effect on climate warming. |
| C．The plastic components in diapers can make buildings stronger. |
| D．Developed countries have difficulty separating organic fibers on diapers. |
| A．Indifferent | B．Supportive. | C．Admiring. | D．Objective. |
With more and more scientists saying we no longer have a climate problem but a climate emergency, the call for all hands to be part
In 2014, after attending one of Al Gore’s Climate Reality training workshops, Paul Severance, a member of Elders Action Network(EAN), started ECA, which
ECA’s mission is to reach out to older individuals and let them join, so they can use their expertise, experience and knowledge
9 . In recent years, studies have suggested how the bisphenol A (BPA) in some food-packaging plastics has been linked to various health problems including heart disease and developmental difficulties in children. Scientists are thus developing a more harmless alternative, and it’s made from tomato waste which would otherwise be got rid of.
However, BPA is still widely used in the plastic coatings which are applied to the inside of metal food packaging such as cans. These smooth waterproof coatings help protect the metal from corrosion (腐蚀), plus they keep the food from sticking to the inside of the container.
Building on previous studies, an international team has researched a type of agricultural waste known as tomato pomace. This material typically consists of tomato skins, seeds and stems, which are left over after the fruits have been processed for use in foods such as sauces or juices. Ordinarily, the pomace is simply dumped in a landfill, burned, or at best composted. It may also be used in animal feed, although it doesn’t have much nutritional value.
The scientists started by drying tomato pomace — first in the sun for three days, then in a 60℃ oven for 16 hours — after which they grounded it into a powder. That powder was subsequently mixed with a sodium hydroxide solution (溶液), which was then heated at 100℃ for four hours. After repeatedly filtering that solution to remove the sodium hydroxide, the researchers were left a lipid. That lipid was then mixed into an ethyl alcohol solution which was sprayed onto samples of some metal. Once the spray had dried and the samples had been heated in a 200℃ oven for 10 to 60 minutes, the result was a polymerized lacquer coating which proved to be very effective at protecting the metal.
The scientists now plan on testing the coating on actual cans. “We would take tomato sauce, and other foods that are usually sold in cans, and we would sterilize them, put them in tins and check if they withstand real conditions,” said a scientist.
1. Which of the following is the most likely to use the plastic coating?| A．A pot full of water. |
| B．A cup filled with coffee. |
| C．A tin containing apple juice. |
| D．An iron box stuffed with packaged food. |
| A．It’s used as animal’s food with rich nutrition. |
| B．It has been used in the plastic coatings. |
| C．People use it to make sauce or juice. |
| D．People usually treat it in many ways. |
| A．How the new coating is created. | B．Why heating is important. |
| C．Why high temperature is needed. | D．What other materials are included. |
| A．To present a scientific study. | B．To introduce a new material. |
| C．To show a complex process. | D．To teach an actual test. |
10 . Researchers and environmentalists have been pushing for clean energy, as well, contending with the rising threat of climate change. An increasingly researched renewable resource is called Ocean Thermal Energy Conversion (OTEC), in which the sea’s temperature variations are used to produce power. On the surface of the ocean, the temperatures are much warmer compared to the seafloor. It gets considerably colder the deeper you go because the sunlight cannot reach the bottom. These temperature differences are most noticeable in the summer when the sun is present for a majority of the hours of the day. To put it simply, OTEC uses a series of pipes that take the cooler water out in the depths of the ocean. The warm water on the ocean’s surface helps heat the cool water, which then vaporizes (蒸发) a fluid, and as a result, turns a turbine (涡轮机) to produce electricity.
Three types of ocean heat renewable energy systems are being developed and researched. An OTEC closed-cycle is perhaps the most common and well-researched, consisting of a condenser (冷凝器), evaporator, pumps, turbine and generator. There are also open systems and hybrid systems.
Systems work by pumping the warmer surface water through an evaporator containing a working fluid with a low boiling point, such as ammonia. Once the fluid vaporizes, it is used to drive a turbine and generator. From there, the vaporized fluid turns back into a liquid through a condenser, cooled by the cold, deep ocean water that pumps up from the depths. The OTEC systems that use seawater can use condensation to make water without salt.
OTEC systems need to place technology about 1 kilometer below the surface of the water. The cold water intake pipe is in the deepest area, and the piping where warm water enters is above sea level. The pumps are needed to move warm water into the system, and a heat exchanger is required to evaporate the fluid. Condensers condense the steam produced in the system, and a marker keeps the entire system afloat.
Energy is essential for almost all human activities. If the world wants to avoid an energy crisis, people need to begin relying on renewable energy. Fortunately, the three types of OTEC can provide energy for large populations.
1. What does OTEC technology depend mainly on to generate renewable power?| A．The depths of the ocean. | B．The vast surface of the ocean. |
| C．Seawater’s temperature differences. | D．The hot temperature in the summer. |
| A．The principle of OTEC technology. |
| B．The progress of OTEC technology. |
| C．The importance of the renewable energy systems. |
| D．The differences among the renewable energy systems. |
| A．The heat exchanger can produce power. |
| B．The cold water pipe is in the depths of the sea. |
| C．The deeper in the ocean, the better the technology is. |
| D．The warm water needs evaporating in a condenser. |
| A．The energy crisis in the future. |
| B．The bad influence of human activities. |
| C．The benefits of Ocean Thermal Energy Conversion. |
| D．The popularity of other renewable energy sources. |
