1. 活动目的;
2. 活动内容(时间, 地点等);
3. 活动反响。
注意:
1. 写作词数应为80左右。
2. 请按照如下格式在答题卡的相应位置作答。
A Volunteer Activity Celebrating World Water Day
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Tibetan antelopes live on the plains of Tibet, Xinjiang and Qinghai. Watching them move slowly
Economic development is necessary if we want to improve society. There comes
By
3 . Tropical (热带的) forests could become so hot that some kinds of leaves will no longer be able to conduct photosynthesis (光 合 作用), according to a study. The photosynthetic machinery in tropical trees begins to fail at about 46.7℃ on average. The research suggests that forests may be nearing dangerous temperature sooner than expected. Models predict that once we hit a global temperature increase of 3.9℃, these forests might experience mass leaf damage.
Chris Doughty, an associate professor at Northern Arizona University and the lead researcher of the study, said the leaf-warming experiments had revealed a nonlinear rise in temperatures. “We were really surprised that when we warmed leaves by 2, 3 or 4℃, the highest leaf temperatures actually increased by 8℃. This shows a concerning nonlinear feedback that we were not expecting.” said Doughty. “If we adopt a do-nothing response to climate change and tropical forest air temperatures increase by greater than 4℃, there could be massive leaf death.” he added.
Avoiding high emissions (排放) in the first place is key to stabilizing temperatures. “We should do all we can to avoid high-emissions. Under low-emissions, almost all tropical forest tree leaves can avoid death from overheating and the trees will survive,” said Simon Lewis, a professor of global change science at University College London. “Yet what the study doesn’t look at is heatwaves. We still might see tree deaths from overheating for limited periods during heatwaves under lower emissions.”
Researchers suggest that the damage is not yet unchanged. “Vote for people who are serious about addressing climate change and transferring to low-carbon economies, ”Disney, one researcher, advocated. More generally, we can all recognize the importance of supporting those countries and people who live in and rely on tropical forests economically, But the serious changes to tropical forests don’t just affect the local people it’s a global issue.
1. Which of the following can best replace the underlined word “nonlinear” in Paragraph 2?A.Global. | B.Dramatic. | C.Steady. | D.Minor. |
A.Planting more trees. | B.Exploring heatwaves. |
C.Conducting researches. | D.Pursuing low emissions. |
A.Promoting global efforts. |
B.Seeking economic support. |
C.Helping tropical countries. |
D.Boosting low-carbon education. |
A.Global warming harms trees. |
B.Tropical forests lose functions. |
C.Tropical leaves struggle in heat. |
D.Forests near dangerous temperature. |
4 . Many disaster-relief programs transport tons of supplies, such as food, water and heavy equipment, by road using large trucks. But some supplies may weigh just a few kilograms or less. For example, a package might contain a few doses of life-saving medicine.
The parachutes (降落伞) that carry these packages from planes are often made of nylon (尼龙). After one use, these parachutes are usually discarded. Because nylon is a polymer (聚合物), it does not decompose quickly. Therefore, Natalie looked for a greener alternative.
Nylon is strong, but a parachute used only once for light packages does not need to be that strong. Paper might be good enough, thought the teen. Plus, a paper parachute can be folded into a tiny package, just like a fabric parachute. Moreover, she notes there are many different ways to fold the unopened paper parachute.
Natalie came up with several folded designs and tested them. Her first models were small, so she could test them indoors. Two were triangular (三角形的). Two more were rectangular (长方形的). One of the rectangular ones opened most smoothly, she found. It also fell and landed most steadily as it dropped through the air. “Such features can be important when the goal is to deliver a package to the ground softly and accurately,” she says.
Natalie showcased her designs at the Intel International Science and Engineering Fair. Natalie’s single-use paper parachutes are not harmful to the environment. They are also less expensive than parachutes made from more traditional materials. A nylon parachute of the same size as her design would cost about $31, she says. One made from silk, another common parachute fabric, would cost almost $16. But a parachute made from paper would likely cost less than $1, Natalie estimates.
1. Why are many relief supplies mentioned in the first paragraph?A.To list an example. | B.To answer a question. | C.To lead in the topic. | D.To make a comparison. |
A.Go bad. | B.Break down. | C.Run away. | D.Bend down. |
A.A small one. | B.A big one. | C.A rectangular one. | D.A triangular one. |
A.Reducing Environmental Impact with Paper Parachutes |
B.Eco-friendly Paper Parachutes for Disaster Relief |
C.The High Cost of Traditional Parachutes |
D.A Teen’s Quest for Better Disaster Relief |
5 . Looking out of the window of his truck, Bob Fitzgerald sees dying forests and empty farmland. Fitzgerald says the land has been in his family since the 17th century. “I can show you land around here that people grew tomatoes on when I was a little boy. And now it’s gone.”
Climate change is making things worse. As sea levels rise, salt water is entering rivers and other waterways. As a result, the land is becoming too salty for crops to grow on. Hundreds of millions of people will be forced to move inland because of rising waters.
Kate Tully, a researcher in the University of Maryland, wants to keep coastal farmers in business as the seas rise. She has seen the forests filled with pine trees killed by the increasingly salty soil. The United States Department of Agriculture gave Tully and other researchers $1.1 million to study the problem. She and her team hope to give farmers ways to stay on their land.
They are testing different crops on pieces of land around the Eastern Shore. “Sorghum (高粱) is my new favorite crop because it can grow without rain and it can grow with lots of rain.” The grain (谷物) crop may be a good choice to feed the nearly 600 million chickens kept in the area each year. As farmers know, chickens can deal with salt, dry weather conditions and heavy rains. Yet just being able to grow a crop is not enough. The crop has to bring in money.
Some people believe the land should be given back to nature. They say the fields should be turned into wetlands, which are popular with duck hunters. “There’s money in duck hunting,” Tully said. “Hunting organizations will pay farmers for hunting on their land. Farmers could make a lot of money from duck hunting.”
Tully and her team are just getting started. It will be a few years before they really understand how to save the farms.
1. What is the purpose of Paragraph 1?A.To lead to the main topic. | B.To describe the farm scenery. |
C.To illustrate a memorable experience. | D.To provide the background information. |
A.To help farmers stay on their land. | B.To study new crops for coastal farmers. |
C.To study climate change in recent years. | D.To help farmers start their own business. |
A.Concerned. | B.Doubtful. | C.Positive. | D.Negative. |
A.Climate Change Making Things Worse. | B.Rising Seas Forcing Changes on Farms. |
C.Coastal Farmers Saving Their Homeland. | D.Scientists Teaching Farmers to Plant Crops. |
6 . Earth Hour is an annual event, asking you to switch off all your lights for one hour in positive change for our planet. It is organized by the World Wide Fund for Nature and it’s a big event usually at the end of March every year.
Earth Hour started in Australia in 2007, when 2.2 million people in Sydney turned off all unnecessary lights for an hour.
It’s true that switching off the lights for just one hour saves only a little power.
Why is it in March? At the end of March in the northern and southern hemispheres (半球), the days and the nights are almost of the same length.
A.But this is only the beginning |
B.The logo of Earth Hour is “60+” |
C.On this evening, people “go dark” |
D.There are many events people can join in |
E.Since then it has grown into an international event |
F.The idea is to raise the awareness of environmental issues |
G.At this time, the sunset time is similar in both hemispheres |
7 . In the United States alone, 119 billion pounds of food is wasted each year according to the nonprofit organization Feeding America. Yet, over 44 million Americans go hungry every day. If this seems like a huge gap, this is due both to the process of distributing the food and to the food waste that affects the world’s ability to sufficiently raise its entire population. However, several New York City(NYC) communities have found an effective way to reduce food waste—community fridges.
These fridges represent a grassroots way to increase access to food and fight against food waste. The community fridges offer a way for people to give fresh food that they will not eat to others who need it. They first surfaced in New York City in 2020. These community fridges offer a ray of hope to people who were struggling to afford or find food during supply chain issues and rising food prices.
Community fridges offer a way for food that would otherwise be wasted to be redistributed. However, another wonderful effect of reducing food waste is the ability to reduce emissions that contribute to climate change. As food gets bad in landfills, it gives off methane, which is the second most common greenhouse gas. This means that food waste is responsible for up to ten percent of global emissions—which is a pretty large number! Placing food that would otherwise go uneaten in a community fridge can help to reduce these emissions.
Although there are some negative side effects of community fridges, their benefits usually outweigh their negatives. Volunteers clean and maintain the fridges. Some community fridge nonprofits even use renewable energy to power the refrigerators. Although the community fridge may be misused by some, these instances are sparse. Now, the idea of the community fridge has spread. These fridges, also known as “friendly fridges”, will be found in cities throughout the United States.
1. Why is “a huge gap” mentioned in paragraph 1?A.To seek for ways to feed the hungry. | B.To lead in the problem of food waste. |
C.To point out the population crisis in the US. | D.To show the effect of reducing food waste. |
A.It helps reduce greenhouse gas emissions. |
B.It motivates companies to make energy-saving fridges. |
C.It is the best solution to global climate change. |
D.It brings down food prices by offering more supplies. |
A.Ordinary. | B.Serious. | C.Reasonable. | D.Rare. |
A.Unclear. | B.Doubtful. | C.Hopeful. | D.Indifferent. |
8 . Once considered an optional lifestyle choice, recycling has become a commonplace activity in most areas. One type of recycling, called downcycling, involves re-purposing a material into a new product of lesser quality.
Downcycling is most common in terms of industrial materials. These products lose their value as they are recycled, which limits their capacity for new use.
Items available for downcycling often require additional chemicals, energy, and other treatments in order to transform them into something usable.
A.Their recycled form is typically both weaker and cheaper than their original one. |
B.When a product reaches a code seven, it is considered no longer recyclable |
C.Durable plastic products in particular require much additional treatment. |
D.Giving products a new life is considered a good way to reuse materials and avoid waste. |
E.It can include varying grades of plastic, paper products, and other materials. |
F.These recycled materials may often be put into new use. |
G.Products are provided with codes to determine their grades and whether or not they may be recycled. |
Xixi, located less than five kilometers from the West Lake in the west of Hangzhou, is China’s first national wetland park. The area covers about 10 square kilometers and it
Wetlands themselves are one of the most biologically diverse ecosystems,
Xixi’s native vegetation,
10 . When scientists and the public worry about sea level rise, they mostly focus on when and where communities will be permanently flooded. But there’s another consequence of rising seas that will affect many more people much sooner: getting cut off from roads and other critical infrastructure (基础设施). It’s a threat that society has not paid nearly enough attention to, says Allison Reilly, a civil engineer at the University of Maryland.
In a new paper, Reilly and her colleagues show the width and pace of the isolation (隔离) threat. Inspired by her work on the eastern shore of Maryland, where people already need to adjust their travel and work schedules to account for tides that frequently flood roads, Reilly and her colleagues calculated that, with one meter of sea level rise, twice as many people across the coastal United States will be isolated than will be fully flooded.
Worse still, many places currently considered at low risk of sea level rise suddenly become much riskier when isolation is taken into account, Reilly says. While planners know that low-lying Florida will be severely flooded, Maine, with its high rocky coasts, is generally thought to be at low risk. But Reilly’s work shows many Mainers are in great danger of being cut off by flooding in coastal communities and river valleys.
This far more immediate effect of rising seas needs to become part of the broader planning process. That kind of planning is starting to happen around the Chignecto Isthmus, an interprovincial land bridge in Canada, connecting New Brunswick and Nova Scotia. The New Brunswick and Nova Scotia governments are considering a variety of plans to raise or replace the dikes (坝). For Ollerhead, a Nova Scotian, that work can’t start soon enough. “It will take a lot of sea level rise before Nova Scotia becomes an island, but you could have a storm that cuts off the major transportation links for days, weeks, or months,” he says. “It’s nearly impossible to predict when, but it will happen eventually.”
1. What is the threat Allison Reilly mentioned in paragraph 1?A.The rising sea level. | B.Flood-related isolation. |
C.Permanent flooded areas. | D.Irreparable infrastructure. |
A.Conclusions of a new paper. | B.Calculations of collected data. |
C.Situations of Eastern Maryland. | D.Influences on coastal United States. |
A.To clarify a point. | B.To offer a solution. |
C.To present an assumption. | D.To illustrate a reason. |
A.Dismissive. | B.Doubtful. | C.Favorable. | D.Unclear. |