1 . Right at this moment, cockroaches (蟑螂) are doing more to save the environment than you are. A big overstatement? Not if you’ve ever thrown away leftovers from your plate or bought more food than you could manage to cook in a week. You’re part of the food waste problem. But just like cockroaches, you can also be part of the solution.
For example, some farmers in Asia and Africa collect tomatoes in big bags, which means that many of them get crushed out of shape and spoiled before they can be sold or eaten. Switching the bags for large wooden containers already lowers the amount of food lost. Similar successes can and have been achieved in various regions with weather-protected storage facilities.
Let’s focus on China for a second. It’s one of the few countries with an innovative approach to minimizing the environmental impact of food waste. How does it do it? Cockroaches. Millions of the tiny creatures are kept in farms in the suburban districts of big cities. Every morning, food waste is delivered by the tonnes and fed to the cockroaches. Just like tiny pigs, they’re not picky and devour everything quickly. After they die, they’re processed into protein-rich feed for animals such as cows or sheep, or used for cosmetic products and Chinese medicine. It’s an efficient and environmentally-friendly alternative to dumping leftover food in a landfill. Cockroaches aren’t going to solve the problem with food waste, but they can serve as an inspiration for finding other similar solutions on a wider scale.
To avoid food waste completely, improvements are needed at every step of the food supply chain, from production to retail. These take time and are often out of your hands as a consumer. But a meaningful reduction of food waste is definitely in your hands. You can not only buy less and shop more often, but also cut down on animal products.
What do we know about the practice of raising cockroaches in paragraph 3?| A．It is widely used around the world. |
| B．It solves the problem with food waste. |
| C．It lessens the environmental impact of pigs. |
| D．It inspires people to seek creative solutions. |
2 . Right at this moment, cockroaches (蟑螂) are doing more to save the environment than you are. A big overstatement? Not if you’ve ever thrown away leftovers from your plate or bought more food than you could manage to cook in a week. You’re part of the food waste problem. But just like cockroaches, you can also be part of the solution.
For example, some farmers in Asia and Africa collect tomatoes in big bags, which means that many of them get crushed out of shape and spoiled before they can be sold or eaten. Switching the bags for large wooden containers already lowers the amount of food lost. Similar successes can and have been achieved in various regions with weather-protected storage facilities.
Let’s focus on China for a second. It’s one of the few countries with an innovative approach to minimizing the environmental impact of food waste. How does it do it? Cockroaches. Millions of the tiny creatures are kept in farms in the suburban districts of big cities. Every morning, food waste is delivered by the tonnes and fed to the cockroaches. Just like tiny pigs, they’re not picky and devour everything quickly. After they die, they’re processed into protein-rich feed for animals such as cows or sheep, or used for cosmetic products and Chinese medicine. It’s an efficient and environmentally-friendly alternative to dumping leftover food in a landfill. Cockroaches aren’t going to solve the problem with food waste, but they can serve as an inspiration for finding other similar solutions on a wider scale.
To avoid food waste completely, improvements are needed at every step of the food supply chain, from production to retail. These take time and are often out of your hands as a consumer. But a meaningful reduction of food waste is definitely in your hands. You can not only buy less and shop more often, but also cut down on animal products.
Which link in the food supply chain does paragraph 2 focus on?| A．Processing. |
| B．Packaging. |
| C．Transporting. |
| D．Trading. |
3 . After a decade of negotiations, nearly 200 countries have agreed to a new United Nations treaty(条约)to protect the world’s oceans, the first of its kind in 40 years. The High Seas Treaty aims to protect 30% of the open oceans by 2030, setting a plan in motion to preserve this vast area.
Oceans cover about 71% of the Earth’s surface and are home to countless species of animals and plants. They play a crucial role in maintaining a healthy planet. However, overfishing and pollution from ships and other sources have severely impinged on many marine (海洋的)species and ecosystems.
The last major UN sea treaty in 1982 described the “high seas” — the parts of the oceans that aren’t controlled by any country — but it did not protect them. The high seas, which account for two-thirds of the ocean, currently have only 1.2% of their massive area protected. A marine protected area(MPA)is an area in the sea with strict rules about fishing and other activities. While more and more countries have established MPAs in their waters, most are not connected, limiting their effectiveness for migratory(迁徙的)species.
Last December, over 110 countries committed to protecting 30% of their land and ocean areas by 2030．The High Seas Treaty now enables the extension of this goal to the entire ocean. It aims to make 30% of the high seas become protected areas by 2030 and requires that proposed activities on the high seas undergo assessment for their potential impact on the ocean environment.
Reaching the agreement was challenging due to differing views on ocean protection among countries, such as limits on fishing or pollution. Disagreements also arose over sharing resources between rich and poor nations, with the latter seeking an assurance that resources benefit everyone, not just those in wealthy countries.
The treaty is not yet final and must be officially accepted at a UN meeting. Then it must be approved and signed by enough countries before it takes effect.
1. What is the main objective of the High Seas Treaty?| A．To protect 30% of the open oceans by 2030． |
| B．To allow unrestricted fishing on the high seas. |
| C．To promote international tourism in marine areas. |
| D．To establish new shipping routes on the high seas. |
| A．Exchanged. | B．Assisted. | C．Impacted. | D．Defended. |
| A．Strict rules of a marine protected area. |
| B．Current measures to restrict overfishing. |
| C．The limited number of migratory species. |
| D．The lack of protection for the high seas. |
| A．New Plans to Develop Marine Resources |
| B．A New UN Agreement to Preserve Open Oceans |
| C．The Treaty Officially Accepted at a UN Meeting |
| D．The Cooperation on Sharing Resources Equally |
4 . The green, natural forest absorbs carbon dioxide from the air through photo- synthesis (光合作用). There is another way of dealing with the climate crisis. That is setting up fields of dark-colored solar panels (太阳能电池板), also known as “solar forests”, which replace power stations that use fossil fuels such as coal and gas to make electricity, thus mitigating harmful emissions (排放) of greenhouse gases.
But since they are both relatively dark, they absorb a lot of solar radiation. Some of the energy is used for photosynthesis in natural forests or to produce electricity in “solar forests”, but most returns to the atmosphere, heating it up. Then what would be the more effective land use option in terms of the climate crisis: planting a forest, or building solar panels? This issue has long been debated by decision-makers around the world. Now, we may have an answer, thanks to a new study.
First, the researchers compared the impact of a forest on the climate crisis in a dry area to that of a solar farm in a similar environment. The researchers found that the albedo effect (反射效应) of both of these “forests” was similar, but that the absorption or prevention of carbon emissions was very different. It turns out that it takes 2.5 years for the heat emitted by solar farms to be balanced by the carbon emissions that are avoided, thanks to the energy they produce. In the case of a natural forest of similar size, it would take more than 100 years of photosynthesis to balance its heating effect.
The researchers also studied how the heating-cooling relationship changed in other climates and found that in more humid environments, the heating effect of planting large numbers of trees is smaller. And the break-even point is reached within 15 to 18 years.
“In dry places, building solar forests seems far more effective in addressing the climate crisis. Meanwhile, forests absorb about a third of annual carbon emissions and play a vital role in the global rain cycle, in maintaining biodiversity and in many other environmental and social contexts. Preventing them from being cut down and planting more trees in humid areas are of great significance,” explains one of the researchers in the study.
What did the researchers find in the study conducted in the dry environment?| A．The natural forest exhibits a stronger albedo effect. |
| B．The solar forest can generate more energy in dry areas. |
| C．The solar forest is superior in balancing the heating effect. |
| D．The natural forest is more effective in solving the climate crisis. |
5 . The green, natural forest absorbs carbon dioxide from the air through photo- synthesis (光合作用). There is another way of dealing with the climate crisis. That is setting up fields of dark-colored solar panels (太阳能电池板), also known as “solar forests”, which replace power stations that use fossil fuels such as coal and gas to make electricity, thus mitigating harmful emissions (排放) of greenhouse gases.
But since they are both relatively dark, they absorb a lot of solar radiation. Some of the energy is used for photosynthesis in natural forests or to produce electricity in “solar forests”, but most returns to the atmosphere, heating it up. Then what would be the more effective land use option in terms of the climate crisis: planting a forest, or building solar panels? This issue has long been debated by decision-makers around the world. Now, we may have an answer, thanks to a new study.
First, the researchers compared the impact of a forest on the climate crisis in a dry area to that of a solar farm in a similar environment. The researchers found that the albedo effect (反射效应) of both of these “forests” was similar, but that the absorption or prevention of carbon emissions was very different. It turns out that it takes 2.5 years for the heat emitted by solar farms to be balanced by the carbon emissions that are avoided, thanks to the energy they produce. In the case of a natural forest of similar size, it would take more than 100 years of photosynthesis to balance its heating effect.
The researchers also studied how the heating-cooling relationship changed in other climates and found that in more humid environments, the heating effect of planting large numbers of trees is smaller. And the break-even point is reached within 15 to 18 years.
“In dry places, building solar forests seems far more effective in addressing the climate crisis. Meanwhile, forests absorb about a third of annual carbon emissions and play a vital role in the global rain cycle, in maintaining biodiversity and in many other environmental and social contexts. Preventing them from being cut down and planting more trees in humid areas are of great significance,” explains one of the researchers in the study.
What does the underlined word “mitigating” in Paragraph 1 probably mean?| A．Releasing. | B．Decreasing. |
| C．Generating. | D．Stabilizing. |
6 . The green, natural forest absorbs carbon dioxide from the air through photo- synthesis (光合作用). There is another way of dealing with the climate crisis. That is setting up fields of dark-colored solar panels (太阳能电池板), also known as “solar forests”, which replace power stations that use fossil fuels such as coal and gas to make electricity, thus mitigating harmful emissions (排放) of greenhouse gases.
But since they are both relatively dark, they absorb a lot of solar radiation. Some of the energy is used for photosynthesis in natural forests or to produce electricity in “solar forests”, but most returns to the atmosphere, heating it up. Then what would be the more effective land use option in terms of the climate crisis: planting a forest, or building solar panels? This issue has long been debated by decision-makers around the world. Now, we may have an answer, thanks to a new study.
First, the researchers compared the impact of a forest on the climate crisis in a dry area to that of a solar farm in a similar environment. The researchers found that the albedo effect (反射效应) of both of these “forests” was similar, but that the absorption or prevention of carbon emissions was very different. It turns out that it takes 2.5 years for the heat emitted by solar farms to be balanced by the carbon emissions that are avoided, thanks to the energy they produce. In the case of a natural forest of similar size, it would take more than 100 years of photosynthesis to balance its heating effect.
The researchers also studied how the heating-cooling relationship changed in other climates and found that in more humid environments, the heating effect of planting large numbers of trees is smaller. And the break-even point is reached within 15 to 18 years.
“In dry places, building solar forests seems far more effective in addressing the climate crisis. Meanwhile, forests absorb about a third of annual carbon emissions and play a vital role in the global rain cycle, in maintaining biodiversity and in many other environmental and social contexts. Preventing them from being cut down and planting more trees in humid areas are of great significance,” explains one of the researchers in the study.
What can be concluded from the last paragraph?| A．More trees should be planted in dry regions. |
| B．More methods should be adopted to address the climate crisis. |
| C．Fields of solar panels should be set up everywhere on the earth. |
| D．Building solar panels and planting trees should be effectively combined. |
7 . Finding fish is going to get harder as climate change continues to heat the world’s oceans. A new study finds that warming seas over the past 80 years have reduced the sustainable catch of 124 species of fish and shellfish. Sustainable catch refers to the amount that can be harvested without doing long-term damage to the health of populations of some species.
Overfishing has made that decline worse, researchers say. Overfishing refers to catching so many fish that the size of the population falls. In some parts of the world, such as the heavily fished Sea of Japan, the decrease is as high as 35 percent. That’s a loss of more than one in every three fish.
Researchers examined changes in 235 populations of fish and shellfish between 1930 and 2010. Those fish populations spread far apart across 38 ocean regions. Temperature changes vary from one ocean site to another. But on average over that time, Earth’s sea-surface temperatures have risen by about half a degree Celsius.
On average, that warming has caused the sustainable catch to drop by 4.1 percent, the study found. About 8 percent of the fish and shellfish populations the team studied saw losses as a result of the ocean warming. However, about 4 percent of some populations increased. That’s because certain species have thrived in warmer waters. One example is a kind of black sea fish. It lives along the northeastern U.S. coast. As warming continues, these fish will reproduce faster until they reach their limit.
About 3.2 billion people worldwide rely on seafood as a source of food. That means it’s urgent for commercial fishing fleets and regulators to consider how climate change is affecting the health of all of those fish in the sea.
From which is the text probably taken?| A．A cooking guide. |
| B．A science magazine. |
| C．A news review. |
| D．A health brochure. |
8 . Finding fish is going to get harder as climate change continues to heat the world’s oceans. A new study finds that warming seas over the past 80 years have reduced the sustainable catch of 124 species of fish and shellfish. Sustainable catch refers to the amount that can be harvested without doing long-term damage to the health of populations of some species.
Overfishing has made that decline worse, researchers say. Overfishing refers to catching so many fish that the size of the population falls. In some parts of the world, such as the heavily fished Sea of Japan, the decrease is as high as 35 percent. That’s a loss of more than one in every three fish.
Researchers examined changes in 235 populations of fish and shellfish between 1930 and 2010. Those fish populations spread far apart across 38 ocean regions. Temperature changes vary from one ocean site to another. But on average over that time, Earth’s sea-surface temperatures have risen by about half a degree Celsius.
On average, that warming has caused the sustainable catch to drop by 4.1 percent, the study found. About 8 percent of the fish and shellfish populations the team studied saw losses as a result of the ocean warming. However, about 4 percent of some populations increased. That’s because certain species have thrived in warmer waters. One example is a kind of black sea fish. It lives along the northeastern U.S. coast. As warming continues, these fish will reproduce faster until they reach their limit.
About 3.2 billion people worldwide rely on seafood as a source of food. That means it’s urgent for commercial fishing fleets and regulators to consider how climate change is affecting the health of all of those fish in the sea.
What does the underlined word “thrived” in paragraph 4 probably mean?| A．Survived narrowly. |
| B．Disappeared soon. |
| C．Decreased sharply. |
| D．Developed quickly. |
9 . Finding fish is going to get harder as climate change continues to heat the world’s oceans. A new study finds that warming seas over the past 80 years have reduced the sustainable catch of 124 species of fish and shellfish. Sustainable catch refers to the amount that can be harvested without doing long-term damage to the health of populations of some species.
Overfishing has made that decline worse, researchers say. Overfishing refers to catching so many fish that the size of the population falls. In some parts of the world, such as the heavily fished Sea of Japan, the decrease is as high as 35 percent. That’s a loss of more than one in every three fish.
Researchers examined changes in 235 populations of fish and shellfish between 1930 and 2010. Those fish populations spread far apart across 38 ocean regions. Temperature changes vary from one ocean site to another. But on average over that time, Earth’s sea-surface temperatures have risen by about half a degree Celsius.
On average, that warming has caused the sustainable catch to drop by 4.1 percent, the study found. About 8 percent of the fish and shellfish populations the team studied saw losses as a result of the ocean warming. However, about 4 percent of some populations increased. That’s because certain species have thrived in warmer waters. One example is a kind of black sea fish. It lives along the northeastern U.S. coast. As warming continues, these fish will reproduce faster until they reach their limit.
About 3.2 billion people worldwide rely on seafood as a source of food. That means it’s urgent for commercial fishing fleets and regulators to consider how climate change is affecting the health of all of those fish in the sea.
1. What does the new study discover?| A．Overfishing is to blame for fish health. |
| B．Warming seas cause fewer fish and shellfish. |
| C．Seafood matters to people’s health worldwide. |
| D．The living regions of fish and shellfish are different. |
| A．About 8 percent of them suffered from a great loss. |
| B．About 35 percent of them survived in the Sea of Japan. |
| C．About 3.2 billion species have been saved up to now. |
| D．About 80 species have died out because of warming seas. |
10 . Researchers at MIT and in China developed a simple, solar-powered water desalination (脱盐) system. They have made a breakthrough in getting fresh drinking water from sea water by using sunlight.
As the research paper published in Energy & Environmental Science explains, equipment applied in this system includes several layers of fiat evaporators (蒸发器) that turn water sources into fresh water through solar energy, as well as condensers (冷凝器) that cool the gas into the liquid. The authors of the paper are MIT students Lenan Zhang and Lin Zhao, Professor Evelyn Wang, and nine other researchers at MIT and at Shanghai Jiao Tong University in China.
How the system uses each of the multiple stages to remove salt from the water is critical to its efficiency. The heat released per stage will be used by the next stage. In this way, the team’s device can convert (转换) the energy of sunlight into the energy of water evaporation with an efficiency of 385 percent.
The device can be considered as a multilayer solar still. The heat is absorbed by its flat panels and then transferred to make water evaporate. The vapor then cools down and turns into liquid water on the next panel. As the water is collected, the released heat is transferred to the next layer.
The team’s 10-stage system produces pure water. Its quality is above the city drinking water standards. It also has the highest yield compared to other similar systems, at a rate of nearly six cubic decimeter per hour for every square meter of the solar collecting area. The system is distinguished from some others by the fact that there is no accumulated salt to be got rid of. Most materials of the demonstration unit don’t cost much and are easy to get.
Further experiments will be carried out on the device to optimize the choices of materials and test its durability under realistic conditions. Researchers will also work on the design of the device to make it more consumer-friendly. It is expected that the system could finally help developing regions that are short of electricity supplies but rich in sea water and sunlight handle water crises.
1. What contributes most to the high efficiency of the device?| A．The recycling of released heat. | B．The choice of materials. |
| C．The use of multilayer equipment. | D．The simplicity of the structure. |
| A．What the device is for. | B．How solar energy is collected. |
| C．How the device works. | D．What makes the device. |
| A．The quality of water it produces. | B．Its zero accumulation of salt. |
| C．Its stable and high production level. | D．The low cost of its condensers. |
| A．make cheap | B．make perfect | C．make diverse | D．make beautiful |
| A．To make it suitable for use by consumers. | B．To make it environment-friendly. |
| C．To check its performance in labs. | D．To reduce its cost. |
