1 . Students at St. Stanislaus High School in Mississippi are among the volunteers along US coasts raising oysters (牡蛎) to help restore, or repair weakened reefs (礁). Oyster reefs are an important part of coastal environments. Each oyster cleans 95 to 190 liters of water a day. The reefs provide living space for shrimp, crabs and fish. They also protect coastlines. In the states of Maryland, Virginia, Mississippi, and Alabama, now there are more than 1,000 oyster gardens. Most of them are in wire cages hanging from private ports.
Colin Wood, one student looking after the St. Stanislaus garden, said he was excited by the hands-on work. “I didn’t realize oysters had a big influence on the environment. And 50,000 to 55,000 adult oysters grown here each year go to reefs in Mobile Bay,” he said.
In the 1950s, an average of 37,400 tons of oysters were taken yearly from partly salty waters in the US. But US oyster harvests fell sharply in the 1990s. Data showed the cause of the drop could be overharvesting, pollution, pests and other problems. Then oyster gardening started.
Oyster gardening uses many of the same methods as farming. Farmers around the country grow oysters near the surface of water. Oysters develop much faster where the water holds more food they eat and enemies can be more easily removed. But the oysters are not being grown to be eaten. Oyster gardens get pulled from the water every seven to ten days. The time out of the water is used to clear out small animals, keep oysters from growing through the wires, and dry and clean off plant-life growing on the wires.
Bob Stokes, the director of the Galveston Bay Foundation in Texas, says, “Oyster gardening is as much about education as it is restoration.”
1. How does Colin Wood feel about his work?| A．Simple. | B．Tiring. | C．Creative. | D．Meaningful. |
| A．The use of oyster gardening. |
| B．The influence of oyster harvests falling. |
| C．The reason for starting oyster gardening. |
| D．The problems oyster gardening is facing. |
| A．To repair the cages. |
| B．To pick weak oysters out. |
| C．To examine the water quality. |
| D．To keep a good environment for oysters. |
| A．What oyster gardening is |
| B．Oyster reefs are becoming endangered |
| C．Volunteers keep oysters to restore reefs |
| D．Why oysters are growing popular in the US |
1.简述校园环境的现状；
2.建设绿色校园的具体建议 (不少于两点)。
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3 . The sunflower sea star has been listed as a critically endangered species following a groundbreaking population study led by Oregon State University (OSU) and The Nature Conservancy.
“These giant sea stars used to be easy to find and were a hit with divers. Unfortunately, your chances of finding one now are next to nothing in most of the areas near the United States—this listing is one step to extinction—and I don’t think they’re coming back without help,” said OSU’s Sarah Gravem, a research associate in the College of Science and the lead author of the study.
Populations of the sunflower sea star suffered dramatic crashes because of a marine (海洋的) wildlife epidemic event, which began in 2013. Scientists used more than 61,000 population surveys from 31 data sets to calculate a 90.6% decline in the sunflower sea stars and estimated that as many as 5.75 billion animals died from the disease, whose cause has not been determined. Moreover, the research showed no sign of population recovery in any region in the five to seven years since the event.
Sunflower sea stars are a key catcher of purple sea urchins (海胆) and the sea star decline has helped the increase in the urchin population in many regions. Too many urchins are linked to a decline in kelp forests（海藻林) already facing pressure from marine heat wave events, making the future uncertain for ecosystems that provide habitat for thousands of marine animals and help support coastal economies.
“Because most people are not out in the ocean every day, we don’t realize how much it’s being changed and impacted by humans. We need to think about how to keep our ocean healthy. While reducing the release of carbon dioxide is the most pressing need, rebuilding key catcher populations, like the sunflower sea star, can be an important piece of the puzzle too,” said study co-author Sara Hamilton, a Ph. D. candidate in the OSU College of Science.
1. What can we infer about sunflower sea stars from Sarah Gravem’s words?| A．They present a danger to divers. |
| B．They cannot recover on their own. |
| C．They cannot adapt to the new environment. |
| D．They attract many tourists to the United States. |
| A．Human beings’ overfishing. |
| B．The arrival of a new species. |
| C．The rising ocean temperature. |
| D．The occurrence of a marine disease. |
| A．Their common enemies are sea urchins. |
| B．Sunflower sea stars feed on the sea keep forests. |
| C．Sunflower sea stars help preserve the sea kelp forests. |
| D．The sea kelp forests provide habitats for sunflower sea stars. |
| A．More species should be introduced to the ocean. |
| B．Scientists play the most important role in protecting the ocean. |
| C．The influence of human activities on the ocean has decreased since 2013. |
| D．More action should be taken to increase the number of sunflower sea stars. |
4 . After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.
Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.
The disappearance of the wolves had many unexpected results. Deer and elk populations — major food sources (来源) for the wolf — grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park’s red foxes, and completely drove away the park’s beavers.
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone. Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
1. What is the text mainly about?| A．Wildlife research in the United States. |
| B．Plant diversity in the Yellowstone area. |
| C．The conflict between farmers and gray wolves. |
| D．The reintroduction of wolves to Yellowstone Park. |
| A．Damage to local ecology. |
| B．Preservation of vegetation. |
| C．A decline in the park’s income. |
| D．An increase in the variety of animals. |
| A．Doubtful. | B．Uncaring. | C．Positive. | D．Disapproving. |
5 . Tips for Green Travel with Kids
Travelling doesn’t mean letting go of all the eco-friendly choices we work so hard to achieve in our daily life. Here are a few tips for green travel with kids.
Booking nonstop flights whenever possible will reduce carbon emissions (碳排放). If the closest local airport doesn’t have nonstop flights to a certain place, check with other local airports to see if nonstop flights are available.
It’s easy when travelling to pull in to fast food restaurants for snacks.
| A．Walking is good for your health. |
| B．Try to cut back to save water and energy. |
| C．But you can pack healthy food from home. |
| D．Travelling is a great chance to introduce your kids to the world. |
| E．Reusable water bottles are easy to bring along wherever you travel. |
| F．Save energy by turning off the hotel room lights when you head out for the day. |
| G．You might have to drive a bit farther, but saving on carbon emissions makes it worthwhile. |
6 . Las Vegas city in Nevada is built in a desert. The city may be known to the outside world for its partying. But officials have found that there are 21 square kilometers of useless grass. The grass is never laid on, played on or even stepped on. The grass is only there to look nice.
Now, the city is asking the Nevada state legislature (立法机构) to ban useless grass. It is trying to become the first place in America to ban that kind of grass often seen between streets, in housing developments and in office parks.
It is estimated (估计) that useless grass makes up 40% of all the grass in Las Vegas and it needs a lot of water to survive. Grass needs four times more water than dry climate plants like cactus. By tearing out the grass, the city could reduce yearly water usage by 15%.
In 2003, the Southern Nevada Water Authority banned developers from planting grass in front of new homes. It also offered homeowners $30 for each square meter of grass they tear out. But fewer people are now using the program. Water usage has increased in southern Nevada by 9% since 2019. And last year, Las Vegas set a record of 240 days without major rainfall. The Colorado River provides much of Nevada’s drinking water. The river could lose more water as climate change affects it.
Water officials (官员) in other dry cities said water usage needs to be reduced. But they fear the reaction to reforms like the ones in Las Vegas if their communities do not accept them. Cynthia Campbell is the water resources adviser for the city of Phoenix in Arizona. “There might come a point whencity restrictions(限制) get too severe (苛刻的) for some residents (居民). They’ll say that is the point of no return for them,” Campbell said. “For some people, it’s a pool. For some people, it’s grass.”
1. Why does Las Vegas city try to ban useless grass?| A．To protect the local people. | B．To beautify the city. |
| C．To reduce water usage. | D．To reduce waste. |
| A．Allowing planting grass before new houses. |
| B．Encouraging the residents to tear out grass. |
| C．Praising those who don’t sign on the program. |
| D．Awarding those who reduced water usage. |
| A．Many residents won’t follow the ban. |
| B．Reaction to the reform will vary personally. |
| C．Other measures should be taken to protect water. |
| D．Water officials should consider many factors (因素). |
| A．Las Vegas Plans to Ban Useless Grass |
| B．A Method Is Adopted to Save Las Vegas |
| C．Choices between Beauty and Practice |
| D．Grass Is Important but Useless in Las Vegas |
7 . The endangered pandas in the Qinling Mountains might face a new threat: the loss of their food, bamboo, which makes up 99% of their meals.
Adult pandas spend most part of the day eating bamboo and have to take in at least 40 pounds a day to stay healthy. However, a new study published in Nature Climate Change warned that they may soon find their food gone because most of the bamboo in the Qinling Mountains might disappear by the end of the century as a result of rising temperature worldwide.
A team made up of researchers from Michigan State University and the Chinese Academy of Sciences has studied the effects of climate change on the bamboo in the Qinling Mountains. They have found that bamboo is very sensitive to climate changes. “80% to 100% of the bamboo would be gone if the average temperature rises 3.5 degrees worldwide by the end of the century,” said Liu Jianguo, one of the report’s authors.
He added, “This is how much the temperature would rise by 2100 even if all countries will keep their promises in the Paris Agreement. But you know what is happening all around the world.”
In recent years, China has been trying its best to protect the endangered pandas by setting up more and bigger natural reserves.
“But it is far from enough and the endangered pandas need cooperation from the rest of the world, because their future is not just in the hands of the Chinese,” said Shirley Martin from the World Wildlife Fund but not a member of the team.
The Qinling Mountains, in the southwest of China, are home to about 260 pandas. That is about 13% of China’s wild panda population. In addition, about 375 are living in research centers and zoos in China.
1. How many wild pandas are there in China?| A．About 260. | B．About 635. |
| C．About 2,635. | D．About 2,000. |
| A．China needs more help from the World Wildlife Fund. |
| B．It is difficult to control the temperature rise within 3.5℃. |
| C．Bamboo is sensitive to the changes of temperature. |
| D．China is making great efforts to protect the pandas. |
| A．The Qinling Mountains can provide enough bamboo for the pandas. |
| B．Pandas in the Qinling Mountains are only threatened by the loss of food. |
| C．Lots of the bamboo in the Qinling Mountains will probably disappear. |
| D．Pandas have already eaten 99% of the bamboo in the Qinling Mountains. |
| A．The Disappearance of Bamboo |
| B．Necessity to Change Pandas’ Food |
| C．A New Threat Faced by the Pandas |
| D．Efforts Made to Save Pandas |
8 . A boy who was crazy about collecting rubbish is only four years old. He has finally fulfilled his dream of being a cleaner. Riley Mccourt has admired the local rubbish collectors for ages, spending his days picking up waste on his street and wheeling bins to the side of the road to help out his neighbors. He loves cleaning and binning waste. His favourite chore is to empty the rubbish from the chip shop his mum runs. Two weeks ago, however, a disaster struck: Riley accidentally knocked over one of the bins and was accused of causing trouble.
Someone posted in the local Facebook group that Riley had put rubbish in the street, clearly unaware of his love for keeping the streets clean. Thankfully his innocence was quickly proven, and his local council decided to make his dreams come true by allowing him to work alongside the cleaners for a day.
Riley joined the waste collection crew on Wednesday, chatting with the team, helping with the recycling, and riding in the waste collection vehicles. He even got his own jacket. Riley’s mum, Toni Mccourt, said, “He loves the bins and trucks.” Riley’s favourite day is definitely bin day. He goes round collecting the rubbish up on the street. The cleaners all know him when they spot him. He goes outside as soon as he sees them come round. He helps his neighbors put their bins out for collection.
Riley clearly made a good impression during his first day on the job, as community services manager Jane Carrol said she was very pleased with his enthusiasm for the role. Jane said, “Riley is clearly a keen recycler and when he is older, I’m sure he’d make an excellent member of the team here. It was a pleasure for the team to show him around the vehicles.”
1. What can we learn about Riley from the first paragraph?| A．Riley likes making trouble. | B．Riley was wronged by someone. |
| C．Riley was knocked over by a bin. | D．Riley looks down upon rubbish collectors. |
| A．To work as a real cleaner. | B．To keep the street clean. |
| C．To prove his innocence. | D．To work with the local council. |
| A．It is meaningless for him to do so. |
| B．It is unnecessary to do so on the street. |
| C．It is challenging for such a little boy to do so. |
| D．It is worthwhile to give Riley very high remarks. |
| A．A newspaper. | B．A diary. | C．A biography. | D．A novel. |
1. 活动目的；
2. 活动内容；
3. 注意事项。
注意：1 .写作词数80左右；
2. 请按格式要求在答题卡位置作答。
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10 . In the old days, when you had to drive to a movie theater to get some entertainment, it was easy to see how your actions could have an impact (影响)on the environment. After all, you were jumping into your car, driving across town, coughing out emissions (产生排放)and using gas all the way. But now that we’re used to staying at home and streaming movies, we might get a little proud. After all, we’re just picking up our phones and maybe turning on the TV. You’re welcome. Mother Nature.
Not so fast, says a recent report from the French-based Shift Project. According to “Climate Crisis: The Unsustainable Use of Online Video”, digital technologies are responsible for 4% of greenhouse gas emissions, and that energy use is increasing by 9% a year. Watching a half-hour show would cause 3.5 pounds of carbon dioxide emissions. That’s like driving 3.9 miles. And in the European Union, the Eureca project found that data centers (where videos are stored)there used 25% more energy in 2017 compared to just three years earlier, reports the BBC.
Streaming is only expected to increase as we become crazier about our digital devices (设备)and the possibility of enjoying entertainment where and when we want it increases. Online video use is expected to increase by four times from 2017 to 2022 and account for 80% of all Internet traffic by 2022. By then, about 60% of the world’s population will be online.
You’re probably not going to give up your streaming services, but there’re things you can do to help lessen the impact of your online use, experts say. For example, according to Lutz Stobbe, a researcher from the Fraunhofer Institute in Berlin, we have no need to upload 25 pictures of the same thing to the cloud because it consumes energy every time. If instead you delete a few things here and there, you can save energy. Moreover, it’s also a good idea to stream over Wi-Fi, watch on the smallest screen you can, and turn off your Wi-Fi in your home if you’re not using your devices.
1. What topic is the first paragraph intended to lead in?| A．The environmental effects of driving private cars. |
| B．The improvements on environmental awareness. |
| C．The change in the way people seek entertainment. |
| D．The environmental impacts of streaming services. |
| A．3.9 miles drive may produce 3.5 pounds of CO2 |
| B．digital technologies account for 4% of electricity use |
| C．online video use makes up 80% of all internet traffic |
| D．60% of the world’s population watch videos online now |
| A．It is being reduced to protect the planet. |
| B．Its environmental effects are worsening. |
| C．It is easily available to almost everyone. |
| D．Its side effects have drawn global attention. |
| A．Watching downloaded movies on a mobile phone. |
| B．Downloading music on a personal computer. |
| C．Uploading a lot of images of the same thing. |
| D．Playing online games over mobile networks. |
