1 . Dry lightning(雷电)can still be harmful even when conditions aren’t so dry, said a study published in Geophysical Research Letters last month. Dry lightning during little to no rainfall was previously thought to cause wildfire danger only with less than 2.5mm of rain in a day. A Washington State University-led study of wildfires in the US West found dry lightning caused wildfires despite up to 7.7 mm of rain.
“The rainfall amounts we recorded should help provide a better understanding of just how much rain can cause a fire risk,” said Dmitri Kalashnikov, lead author of the study.
The researchers analyzed(分析)cases on more than 4,600 naturally caused fires from 2015 to 2020. They matched 3,726 of those to the lightning strikes that likely started them with the help of National Lightning Detection Network.
The study found that 15.3% of those were holdover fires which burn without smoke, bringing about over a hundred fires each year. Analyzing the rainfall amounts around the time of the lightning strikes showed greater rainfall than previously thought among the earlier found fires ranging from 1.7 mm to 4.6 mm.
While humans still cause most fires either by accident or on purpose, lightning-caused wildfires burn the most areas. Nearly 70% of the wildfire-burned land in the West was from lightning-caused fires according to the study. For example, the largest wildfire burn area in California history took place in August 2020 after dry lightning caused many wildfires at once.
Dry lightning can also start wildfires in places that are hard for firefighters to reach. This study found the places where holdover fires happened repeatedly were in the forested mountains of the Southwest as well as the middle and southern Rocky Mountains. Holdover fires cause the problem because they are so hard to notice.
1. The new study found dry lightning can still cause wildfires with a daily rainfall of __________.| A．7.7 mm | B．8.0mm | C．9.4mm | D．10.2mm |
| A．The finding of the research. | B．The number of the cases. |
| C．The process of the study. | D．The designers of the test. |
| A．They are difficult to notice. | B．The fire service is short-handed. |
| C．Campers often smoke there. | D．The locals fail to call firefighters. |
| A．A history textbook. | B．A science magazine. |
| C．A course plan. | D．A book review. |
1. 黑脉金斑蝶的现状；
2. 提出保护原因及措施；
3. 号召保护濒危动物。
注意:
1. 写作词数应为80左右；
2. 请按如下格式在答题卡的相应位置作答。
Protect Monarch Butterflies
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3 . The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent (程度), the physical form and the habits of the earth’s vegetation and its animal life have been shaped by the environment. Considering the whole span of earthly time, the opposite effect, in which life actually modifies its surroundings, has been relatively slight (轻微的). Only in the present century has one species—man got significant power to change the nature of his world.
During the past quarter century this power has not only become increasingly great but it has changed in character. The most alarming of all man’s assaults (侵犯) upon the environment is the contamination (污染) of air, earth, rivers, and sea with dangerous and even deadly materials. This pollution is for the most part irrecoverable. In this now universal contamination of the environment, chemicals are the wicked partners of radiation (辐射) in changing the very nature of the world, the very nature of its life.
It took hundreds of millions of years to produce the life that now lives on the earth. Given time not in years but in millennia (千年), life adjusted and a balance has been reached. But in the modern world there is no time.
I don’t mean that chemical insecticides (杀虫剂) must never be used. However, we have to admit that we have put poisonous and biologically harmful chemicals indiscriminately (恣意地) into the hands of persons largely or wholly ignorant of their possible harm. We have forced enormous numbers of people to contact these poisons, without their permission and often without their knowledge. We admit, furthermore, that we have allowed these chemicals to be used with little or no advance investigation of their effect on soil, water, wildlife, and man himself. Future generations are unlikely to forgive our lack of concern for the integrity (完好无损) of the natural world that supports all life.
1. What does the underlined word “modified” in the first paragraph mean?| A．destroy | B．change | C．explore | D．maintain |
| A．chemicals | B．radiation | C．insecticides | D．vegetation |
| A．Chemicals must not be used for the sake of the environment. |
| B．The environment is greatly affected by vegetation and animals. |
| C．The future generations are likely to lack concern for the environment. |
| D．The pollution of the environment is largely due to irresponsible humans. |
| A．What humans should do with chemicals for future generations. |
| B．How the environment affects the living things on the earth. |
| C．What kind of chemicals are less harmful to the environment. |
| D．How we humans make the best of chemicals to save the earth. |
4 . Animals being extinct from the Earth is a serious issue. When this happens in order to use their fur or skin for fashion, it is even worse, since it’s not even for a matter of human survival. That’s why a London zoo decided to make a powerful statement at the Siamese crocodile enclosure (鳄鱼围栏).
When visitors come in expecting to see a crocodile, they’re greeted with the handbag instead, making a very effective and powerful point about illegal wildlife trade and the harm it takes on the species involved.
A sign by the enclosure reads, “This bag used to be found swimming in slow-moving rivers and streams across Southeast Asia and Indonesia. Over the last 75 years, more than 80% of Siamese crocodiles have disappeared. Many, like this one, were hunted for their skins as part of the illegal wildlife trade.”.
Native to parts of Southeast Asia, Siamese crocodiles are critically endangered and have become virtually extinct in the wild. Due to hunting as well as habitat loss, they are now absent from nearly 99% of their original range. A huge part of the decline of population is due to humans using their wetland habitat for rice farming, and things only took a turn for the worse when large-scale hunting for their skin for commercial purposes began in the 1950s.
The particular handbag that is on display at the zoo was confiscated at a UK airport, according to Benjamin Tapley, leader of reptiles and amphibians at ZSL London Zoo.
Tapley told The Huffington Post, “We made this exhibit, within ZSL London Zoo’s Reptile House, to draw visitors’ attention to the destructive impact the Illegal Wildlife Trade (IWT) is having on species around the world. At ZSL, we are working globally with governments and local communities to protect wildlife, support law enforcement (执法) that targets illegal trade networks, empower local communities affected by IWT and reduce demand for threatened wildlife.”
1. Why does the sign say this handbag used to swim?| A．It is made of a crocodile’s skin. |
| B．It is made into a crocodile shape. |
| C．It is light enough to float on water. |
| D．It was kept in flowing river at first. |
| A．Wildly hunting of Siamese crocodiles. |
| B．Destruction of Siamese crocodiles’ habitats. |
| C．Commercial value of Siamese crocodiles. |
| D．Causes to make Siamese crocodiles endangered. |
| A．Seized. | B．Sold. | C．Found. | D．Stolen. |
| A．The importance of wildlife protection. |
| B．The crisis endangered animals are facing. |
| C．The purpose to show the handbag. |
| D．The harm IWT caused. |
5 . In the first test of its kind in Europe, and only the second in the world, Belgian researchers tested 39 brands of straws (吸管) for the group of synthetic (合成的) chemicals known as poly-and perfluoroalkyl substances (PFAS). The straws are made from five materials — paper, bamboo, glass, stainless steel and plastic. PFAS were found in the majority of the straws tested and were most common in those made from paper and bamboo. They were not found only in steel straws tested.
PFAS are used to make everyday products, from outdoor clothing to non-stick pans, resistant (抵抗to water, heat and stains. They are, however, potentially harmful to people, wildlife and the environment. They have been related to a number of health problems, including lower response to vaccines (疫苗), lower birth weight, thyroid disease, liver damage, kidney cancer and testicular cancer. They break down very slowly over time and can last thousands of years in the environment, a property that has led to them being known as “forever chemicals”.
A growing number of countries, including the UK and Belgium, have sopped the sale of single-use plastic products, including drinking straws, and plant-based versions have become popular. The PFAS concentrations (浓缩物) were low in them and, bear in mind that most people tend to only use straws occasionally, bringing a limited risk to human health. However, PFAS can remain in the body for many years and concentrations can build up over time.
It isn’t known whether the PFAS were added to the straws by the producer for waterproofing or the PFAS were the result of contamination. Potential sources of contamination include the soil the plant-based materials were grown in and the water used in the production process. However, the presence of the chemicals in almost every brand of paper straws means it is likely that it was, in some cases, being used as a water-resistant coating, say the researchers.
1. Why are PFAS called “forever chemicals”?| A．They are commonly seen in daily life. |
| B．They bring humans health problems. |
| C．They remain in the environment for long. |
| D．They can resist water, heat and stains. |
| A．By bringing people air pollution. |
| B．By polluting humans’ food. |
| C．By building up little by little in humans’ body. |
| D．By making people addicted to drinking easily. |
| A．Pollution. | B．Discovery. | C．Experiment. | D．Development. |
| A．More and more countries give up single-use plastic products. |
| B．PFAS are widely used in the production of daily necessities. |
| C．Certain kinds of new synthetic chemicals were discovered. |
| D．Environment-friendly drinking straws are actually harmful. |
6 . Animal appear to predict earthquakes by sensing electricity in the air — the first study to find reliable evidence of the phenomenon has shown.
Cameras revealed an “amazing” drop in the number of animals up to 23 days before a major quake hit their rainforest home at Yanachaga National Park in Peru. Lead scientist Dr Rachel Grant, from Anglia Ruskin University, said, “The results showed that just before the earthquake, animals’ activity dropped right down.”
On a normal day the cameras placed around Yanachaga National Park record between 5 and 15 animals. But in the 23 days before the earthquake, the number of animals dropped to five or fewer per day. No animals were photographed at all on five of the seven days immediately before the quake.
Another study showed that animal activity remained normal in the park over a different period when seismic (地震的) activity was low. Co-author, professor Friedemann Freund, said, “The cameras were located at an altitude of 900 meters. If air ionization occurred, the animals would escape to the valley below, where there were fewer positive ions ( 离子). With their ability to sense their environment, animals can help us understand small changes that occur before major earthquakes.”
Other evidence suggested that before the earthquake, the air around the high mountain sites filled with positive ions that can be produced when rocks are placed under stress. Positive ions have been known to cause ill effects in humans as well as animals. Scientists believe the animals were made to feel uncomfortable by the positive ions, leading them to avoid the area. They are thought to have escaped to lower ground, where the air was less ionized. The findings may help experts develop better short-term seismic forecasts.
1. How did scientists conduct the study?| A．By comparing different animals’ habits. |
| B．By observing animals in high mountains. |
| C．By explaining the positive ion phenomenon. |
| D．By analyzing images of animals they obtained. |
| A．The ground at a lower altitude is less ionized. |
| B．Cameras normally record more animals per day. |
| C．Earthquake warnings can be detected in lower places. |
| D．The activity of animals and earthquakes is consistent. |
| A．The findings make for accurate seismic forecast. |
| B．Animals tend to be uneasy with more positive ions. |
| C．Positive ions make humans and animals depressed. |
| D．All the animals remain abnormal before the earthquake. |
| A．Negative Influence of Positive Ions. |
| B．Ions’ Destruction to the Environment. |
| C．Animals’ Behavior Before Earthquakes. |
| D．Creatures’ Ability to Predict Earthquakes. |
7 . A powerful earthquake hit Morocco on Friday night, killing over 2,500 people and causing huge damage over a large area. The quake was one of the most powerful ever recorded in Morocco. It’s also the country’s deadliest earthquake in over 60 years. So far, the earthquake is reported to have killed over 2,680 people. It has injured over 2,500 others. The earthquake was especially dangerous because it happened at night, when people were asleep in their homes.
Marrakesh is a big city that’s popular with tourists. Many of its modern buildings seem to have survived the earthquake, but the old part of the city, Medina, was hit hard. It has buildings that are over 1,000 years old. Many of those buildings were demolished.
Outside of Marrakesh, the earthquake caused even more damage. In the Atlas Mountains, the earthquake’s center, there are many small villages, some of which were nearly destroyed.
Many of the people in the area live in simple houses made of mud bricks, which is a traditional way of building in Morocco. But it’s not strong enough to protect against earthquakes. Although the Moroccan government has laws that require buildings to be built more safely, these rules are often ignored.
Rescue workers have been working hard to save those affected by the quake. In larger cities, rescue efforts seem to be going well. But it has taken a lot longer for help to reach remote areas in the mountains. Many of these villages are difficult to get to. The earthquake caused landslides, blocking roads, and making these places even more difficult to reach. In some areas, phone and electrical service were also knocked out, leaving these places completely cut off. That means that the local people in some remote areas have had to deal with the situation on their own. In some areas, people have been digging through the broken stones or bricks with their hands, trying to find survivors. Many people are sleeping outside, unsure if their houses are safe.
Many outside countries have offered to help Morocco. Some countries have offered teams of experts; others have offered supplies.
1. What do we know about the earthquake in Morocco?| A．It only killed 2,680 people. | B．It occurred during the day. |
| C．It was the deadliest in recent decades. | D．It injured less than 2,500 people. |
| A．Destroyed. | B．Decorated. | C．Protected. | D．Constructed. |
| A．Necessary help from other countries for the quake-hit area. |
| B．The current serious situation faced by people in disaster areas. |
| C．Possible causes of the earthquake happening in Morocco. |
| D．Reasons why the earthquake caused so much damage in Morocco. |
| A．Rescue workers in big cities are in short supply. |
| B．Villagers in the quake-hit area try to save themselves. |
| C．Most of the houses in remote areas are reported safe. |
| D．Rescue workers can easily get in touch with mountain people. |
8 . It happens in every disaster (灾难): For those in need, people often donate (捐赠) things that turn out to be more of a trouble.
Juanita Rilling remembers it happened in 1988 when she was a disaster expert trying to help people suffering from a hurricane (飓风) in Honduras. “One morning I received a call from one of our logistic operators (物流运营商), and he explained to me that there was a plane carrying medical supplies that needed to land,” says Rilling. “But the ground was full, with lots of donations that no one had required. The plane—full of needed supplies—had to find someplace else to go. And it ended up stopping everyone’s plans by about 48 hours, which is important time in a disaster.”
Rilling now runs the Center for International Disaster Information, which is trying to make sure things like that don’t happen again. So when Superstorm Sandy hit, Rilling’s group started a project to encourage money donation. “Even a small donation can make a big difference and can quickly become exactly what people affected by a disaster need most,” Rilling says. But despite this, donators do that over and over. About 60% of the things donated after a disaster couldn’t be used. Often it’s old clothing or food.
Meghan Hara, who deals with kind donations for the American Red Cross, says she knows that some people are careful with giving money. And she doesn’t think that the need to give something concrete (实物) should be completely stopped.
“Part of what people are doing is that they’re helping, and they’re trying to help. What we need to work out is how to effectively deal with that,” Hara says.
1. What caused needed supplies to be put off after the hurricane in 1988?| A．Workers on the plane. | B．A weather report. |
| C．Useless donations on the ground. | D．The call from the operator. |
| A．Clothing. | B．Money. | C．Medicine. | D．Food. |
| A．Supportive. | B．Doubtful. | C．Uncaring. | D．Worried. |
| A．Studies on natural disasters. |
| B．The benefits of helping others. |
| C．Tips on choosing useful donations. |
| D．The ways of managing people’s donations. |
9 . For Vishwanath Mallabadi from Bangalore, India, there is no such thing as a useless object or “waste”. Give him anything—abandoned metal or plastic items, old devices, dysfunctional printed circuit boards — and he’ll create art out of it.
Vishwanath’s passion is particularly relevant in the current age, where India generates more e-waste than it can recycle. From 2019 to 2020, the country generated a total of more than 1 million tonnes of e waste. Of this, only 22.7 percent was collected, taken apart and recycled. The eco-artist has upcycled and transformed nearly 200 kg of e-waste into usable products and proposes eco-art as a means to deal with waste management.
Vishwanath’s father, D M Shambhu, was a famous sculptor and painter, but he wanted his son to choose medicine and become a doctor. However, Vishwanath, who was interested in upcycling second-hand objects right from childhood, decided to pursue a BFA in Applied Art. He later went on to work in a company as a high-level administrator and retired two years ago. “In my free time and during the weekends. I used to conduct experiments in e-waste and try to develop something unique,” he recalled.
So far, the eco-artist has created more than 500 objects. These include a six-foot tall sculpture made from upcycled computer keyboard keys, and a painting inspired by Vincent Van Gogh’s The Starry Night, using upcycled resistors (电阻器) on wood. Among his other artworks are a 42×38 inch figure statue created from upcycled keyboard keys on a sun board finished with plastics, a deer made of colorful used wires, plants and flowers from computer parts, and eco jewellery from upcycled digital wrist watch parts.
“The work involves selecting the e-waste objects—the texture, shape, and colour etc, and visualising and conceptualising the final product. It might take weeks and months for sculptures. However, sustainable initiatives and upcycled art are nowadays in demand in multinational companies opting for a sustainable culture,” he said.
1. What does the author try to convey in paragraph 2?| A．The seriousness of e-waste in India. |
| B．Vishwanath’s passion for environment protection. |
| C．The achievements of waste management in India. |
| D．Vishwanath’s attitude towards dealing with e-waste. |
| A．A passionate eco-artist. | B．A private doctor. |
| C．A famous sculptor. | D．A senior manager. |
| A．The deer and the plants. | B．The sculpture and the figure statue. |
| C．The painting and the flowers. | D．The deer and the eco jewellery. |
| A．Exciting but unprofitable. | B．Creative but useless. |
| C．Demanding but worthwhile. | D．Efficient but costly. |
10 . Whether you call them feral pigs, boar, swine, hogs, or even razorbacks, wild pigs are one of the most damaging invasive species on Earth, and they’re infamous for damaging agriculture and native wildlife.
A big reason they’re so harmful is that they uproot soil at vast scales, like tractors ploughing a field. Our new research, published recently, is the first to calculate the global extent of this and its effects on carbon emissions.
Our findings were horrible. We discovered the total area of soil uprooted by wild pigs is likely the same area as Switzerland. This releases 4.9 million tonnes of carbon dioxide each year the same as one million cars. The majority of these emissions occur in Oceania. A huge portion of Earth’s carbon is stored in soil, so releasing even a small part of this into the atmosphere can have a huge impact on climate change.
It’s estimated that wild pigs destroy more than US$74 million worth of crops and grass each year in Australia, and more than US $270 million in just 12 states in the USA. Wild pigs have also been found to directly threaten 672 vertebrates (脊椎动物) and plant species across 54 different countries. This includes Australian ground frogs, tree frogs and multiple orchid species which are imperiled, as pigs destroy their habitats and hunt them for food.
Their geographic range is expected to expand in the coming decades, suggesting their threats to food security and biodiversity will likely worsen. But here, let’s focus on their contribution to global emissions.
One such study was conducted for three years in hardwood forests of Switzerland. The researchers found wild pigs caused soil carbon emissions to increase by around 23% per year. Similarly, a study in the Jigong Mountains National Nature Reserve in China found soil emissions increased by more than 70% per year in places disturbed by wild pigs.
1. Why are wild pigs unpopular according to the text?| A．For their threat to humans. | B．For their damaging effects. |
| C．For their consuming too much food. | D．For their bad effects on tractors. |
| A．Leading to dry and acid soil. |
| B．Damaging the source of drinking water. |
| C．Increasing too much soil carbon emissions. |
| D．Reducing the area of agricultural land greatly. |
| A．In pain. | B．In alarm. | C．In chaos. | D．In danger. |
| A．The threat of wild pigs |
| B．Wild pigs on a global scale |
| C．A new problem faced by farmers |
| D．The impact of emissions on climate change |
