1 . The population of a sea creature known as the sunflower sea star, which was once plentiful along the Pacific coastline from Mexico’s Baja California Peninsula to Alaska, has been reduced sharply these years. About 90% of them have disappeared since 2013 because of a mysterious sea star wasting
One of the factors which is likely to have led to the death of sea stars is rising ocean temperatures caused by climate change, according to some scientists. The ocean absorbs most of the heat caused by greenhouse gas emissions, which has the effect of increasing the temperature of the water. Many sea creatures can only tolerate very small changes to their environment.
Sunflower sea stars feed on sea urchins(海胆). Sea urchins feed on seagrass. Without the existence of sunflower sea stars, their key predator in the food chain, sea urchin populations have boomed. That has led to the death of many sea grasses—which in turn contributes to the climate crisis, as seagrass is a valuable tool to store carbon dioxide.
Scientists at the University of Washington have been working on that. At their laboratory on San Juan Island, they have been cultivating a new generation of sunflower sea stars that can be used to repopulate coastal waters. Jason Hodin, a research scientist at the University of Washington’s Friday Harbor Labs, said that they’re hoping the program can help in the process of recovery of the sunflower sea star and, at last, recovery of the health of ecosystems like seagrass that is under threat right now.
To test the sea stars’ capacity to tolerate warming seas, scientists make these tiny creatures experience fluctuations(波动) in water temperatures in the lab. Some of the young adult sea stars are being raised in water that is slightly warmer than normal, and are showing signs of being able to cope with the added warmth. “These are not typical ocean temperatures around here, but the success indicates that they at least have the ability to endure the warmer water,” said Hodin.
1. Which could be a possible reason for the death of sunflower sea stars?A.Habitat loss. | B.Ocean pollution. |
C.Climate change. | D.Food shortage. |
A.an animal that kills and eats other animals. |
B.an animal that is killed and eaten by other animals. |
C.a person who hunts wild animals for food. |
D.a dog which is used in hunting. |
A.By developing machines to cool sea water. |
B.By improving the environment of coastal waters. |
C.By growing plentiful seagrass to absorb carbon dioxide. |
D.By experimenting on raising a new generation of the creature. |
A.supportive | B.critical | C.indifferent | D.doubtful |
Greenpeace is not satisfied
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Greenpeace francized EU national governments for
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European Commission Executive Vice-President Fran’s Timmermans,
3 . In Frank Schätzing’s 2004 novel The Swarm (《群》), sea life develops a collective mind of its own. Whales band together to attack ships, while groups of jellyfish (水母) swallow the shores. It’s as if ocean creatures decided to jointly fight humanity to try to get back their environment.
Scientists say that this scene isn’t made up. Animals do move in groups governed by the collective. Think of a flock of birds, a line of ants, a group of fish — all crowds like those imagined by Schätzing, if not quite as deadly. “Animals regulate these vast collective structures without any leadership, without any individual animal knowing the whole state of the system,” says Nicholas Ouellette an engineer. “And yet it works fantastically well.”
Deborah Gordon, a biologist, studies how ants make collective decisions, such as when and where to hunt for food. A red harvester settlement typically has some hunters waiting in the nest while others hunt out. Studying these ants in New Mexico, Gordon showed that they leave the nest at a rate determined by how often hunters return with food. The more food is available the more often hunters return to the nest; this starts more ants leaving the nest. But if little food is available, the process will throttle down.
Working with computer scientist Balaji Prabhakar, Gordon found that information flowing among the ants was similar to the way the Internet protocols (协议) regulate the rate of data transport depending on how much bandwidth (宽带) is available. The scientists named this naturally produced algorithm (算法) the “Anternet”. The Anternet information seems to help the settlement to search efficiently.
Studies of collective behaviour in birds, ants and fish have meanings for humans. Engineers can take lessons from animals that swarm effectively together to build better swarms of small robots.
And understanding how ants collectively adapt to changes in their network, such as when a tree blows down, could help researchers develop flexible rules for robots working in an unfamiliar environment such as in a burning building. “That’s a lessor for engineering,” Gordon says.
1. Why does the writer describe the scene of The Swarm?A.To warn people of the danger of sea life. | B.To recommend the special novel to readers. |
C.To prove human damage to the environment. | D.To stress the effect of animal group behavior. |
A.go down | B.slow down | C.break down | D.set down |
A.It’s a flexible problem-solving rule. | B.It’s a method of ants finding way home. |
C.It’s a flow of data about Internet protocols. | D.It’s a net to collect information among ants. |
A.Observing nature for interesting engineering |
B.Adapting to the change of the animals’ habitats |
C.Learning from the collective wisdom of animals |
D.Understanding the various behaviours of animals |
4 . You don’t have to brave the crowds at the Tidal Basin to enjoy the glories of cherry blossom (樱花), which always runs for one month. The delicate pink and white blooms decorate the district. Washington-based nonprofit Casey Trees has a detailed map of where to find them.
Using the map’s explanation, you can check out a neighborhood’s list of trees. The map is color-coded by a variety of cherry blossom, and there are several: Yoshino, Okame, Oshi-ma, and Sour Cherry, just to name a few.
Michaila Musman, the Geographic Information Systems manager at Casey Trees,suggests tracking down the Sargent Cherry, which develops pinkish white blossoms and is called the “cream” of flowering cherries by the Arbor Day Foundation. “They can also support bird species around the city, which is a wonderful bonus.” says Musman.
The map is an annual tradition at Casey Trees. The organization plans to use it to help protect Washington’s trees. To build the map, staff and volunteers walked into the city’s parks to identify and measure every tree they came across. “We can do better advocacy and tree protection if we know what our trees across the city look like.” said Musman.
Other data points for the map come from DDOT’s Urban Forestry Division and from cherry trees that Casey Trees has planted. Most of the trees on the map are located on public land. So if your yard or your neighbor’s yard is the proud home of a cherry tree, it may not appear (considering it as your own secret garden).
And if you miss the cherries this time around, the organization also maintains a separate map of all the flowering trees in the city. Musman recommends checking out the Eastern Red bud. “They are native to this area and they have very beautiful blossoms.” she says, “It seems as though they came right out of a Dr. Seuss’ book.”
1. What can the map be used to do?A.Research bird species. | B.Decorate some districts. |
C.Locate cherry blossom. | D.Identify the type of flowers. |
A.To know the city better. | B.To protect the local trees. |
C.To build the city’s parks. | D.To use public land efficiently. |
A.The map comes out of a Dr. Seuss’ book. |
B.The map is the only product of Casey Trees. |
C.Casey Trees has planted many trees across the USA. |
D.Casey Trees takes individual privacy into consideration. |
A.Casey Trees likes cherry blossom | B.Casey Trees will introduce a new map |
C.You should protect the city’s cherry trees | D.You needn’t bother to find cherry blossom |
The 14th Meeting of the Conference of the Contracting Parties to the Ramsar Convention on Wetlands (RAMSAR COP14) took place in Wuhan, Hubei Province in November. It was the first time that China
Wuhan, the host city of RAMSAR COP 14. has 162,400 hectares (公顷) of wetlands, accounting
Nature provides the basic conditions for human
6 . There has been a very serious decline in the numbers of shallow-water fish as a result of overfishing. People still want to eat fish, so the fishing industry must look at other sources, especially the deep waters of the Atlantic.
Conservation measures will have to be put in place if these deep-sea fish are to survive. Research on five such species shows that numbers have declined by between 87 percent and 98 percent.
The problem is emphasized by the fact that the decline in numbers happened in less than twenty years. Deep-sea fish take a long time to reproduce and normally live for many years.
The damage done by overfishing goes beyond the sea environment. Millions of people make a living in the fishing industry.
A.Billions of people rely on fish for protein. |
B.Many people now choose not to eat deep-sea fish. |
C.Unfortunately, their reproduction rate is very low. |
D.This puts them in the category of “critically endangered”. |
E.None of these facts has been taken into account by the fishing industry. |
F.Overfishing is a major cause of decline in populations of ocean wildlife. |
G.This has resulted in a sharp decline in the numbers of many of the species caught. |
7 . When tennis player Sam Bencheghib recognized the way the oceans in his home country, Indonesia, were polluted, in 2009 he and his older brother, Gary, co-founded Make a Change World, an organization supporting sustainability(可持续性) as well as helping to cut plastic(塑料) pollution. The company shares short videos encouraging eco-friendly actions.
Bencheghib has worked on several projects overseas. But he wanted to do something in the United States on his own. In January, Bencheghib came up with the idea to run from Los Angeles to New York, to make people pay attention to plastic pollution and its influence on oceans. Starting on June 8, Bencheghib has kept running 20 miles a day for 140 days. Along the way, he plans to host education speeches at schools, universities and town halls as well as organize street and city cleanups to influence people.
Bencheghib said he understands the difficulty of his task but recognizes that taking risks often has advantages. Unsurprisingly, when he told his team and coaches about his plan, he was met with surprise.
“We were all really excited but couldn’t believe it,” teammate Christopher Auteri said. “It’s crazy how long it is, but we know if there’s anyone who’s going to do it, it’s going to be Sam.”
Since Bencheghib broke the news to the team, there have been no plastic water bottles in the locker room, and teammates join Bencheghib on training runs. Coach Wouter Hendrix said Bencheghib’s work shows his persistence(坚持) and courage, which he believes will serve as invaluable qualities for completing his run.
1. What encouraged Sam to set up his organization?A.A conversation with his brother. |
B.The sea pollution in Indonesia. |
C.The videos he watched. |
D.A match he played. |
A.Meeting local leaders. |
B.Running across America. |
C.Creating something to replace plastics. |
D.Inviting people to give speeches in schools. |
A.They gave him some money. 0001 |
B.They joined his organization. |
C.They refused to play tennis with him. |
D.They showed their support with their actions |
A.Impatient and outgoing. |
B.Friendly and honest. |
C.Strong-minded and helpful. |
D.Careful and hard-working |
8 . As waterfowl (水鸟) seasons unfold each year across North America, the question “Where are the ducks?” unavoidably arises somewhere. While that seems like a straightforward, easy question, the answer is actually very complex. There are many factors that influence distribution of waterfowl in fall and winter.
Most waterfowl hunters understand the effect weather has on waterfowl migration (迁徙). Except for the few species that are hardwired for more dependable long-distance migrations, such as blue-winged teal (水鸭), waterfowl are adapted to migrating only as far as is necessary for them to find food and places to rest. Waterfowl like to wander at places without freezing temperatures and snow to cover food sources. It is advantageous for them to reduce risk of death from migration. Some birds that arrive earliest on breeding areas have access to the best regions, which results in a higher probability of nesting successfully.
Snow and ice cover and their influence on waterfowl migration are easy to understand to most duck hunters. However, what may be less understood is the trend toward warmer winters. If current climate trends continue in North America, northern regions will have less frequent ice and snow cover in future winters. So waterfowl that are adapted to staying as close to breeding areas are likely to be influenced, meaning significantly delayed fall migrations and shorter periods on southern areas.
In the past 200 years the landscapes that are most important to waterfowl have suffered huge habitat loss, with some states losing more than 90 percent of wetlands, and nearly all losing over 50 percent. Perhaps the most discouraging loss of wetlands important to wintering waterfowl has been in coastal Louisiana, where more than 40 percent of the states, approximately 3 million acres of wetlands have disappeared over the past several decades.
Changes in the number of wetlands and the trend toward warmer winters are likely enabling waterfowl to winter farther north or, at least, delaying fall migration. Unsurprisingly across most of the eastern United States’ many waterfowl hunters saw reduced harvest as a result.
1. What does the author want to tell us in paragraph 1?A.Not all people know where migrating birds fly. |
B.The reasons for waterfowl distribution are puzzling. |
C.It’s very easy for people to know why waterfowl migrate. |
D.There are complicated factors influencing waterfowl migration. |
A.Having a good rest there. | B.Protecting-them from hunters. |
C.Getting access to the best regions. | D.Decreasing risk of dying from migration. |
A.Almost all the wetlands in coastal Louisiana will disappear soon. |
B.Loss of wetlands important to waterfowl has been happening rapidly. |
C.Habitat loss will put waterfowl in immediate danger of extinction, |
D.Most states in North America have lost over 90 percent of wetlands. |
A.Where are the ducks on earth? |
B.How are waterfowl migrating? |
C.Are waterfowl migrations changing? |
D.Are waterfowl surviving the warmer climate? |
9 . In the 2010s, 34-year-old Brianne Miller travelled around the world as a marine biologist. No matter how remote the location, she made the same alarming discovery: Copious amounts of plastic littering the water and threatening marine life.
Canadians throw out three million tons of plastic waste each year. Approximately one third of all food produced worldwide goes to waste, too, according to a United Nations study. Miller, determined to fix the problem at the source, envisioned a shop that went further than banning plastic bags—a place that eschewed both wasteful packaging and the bad habit of wasting food itself.
In 2015, she called a store in Vancouver, explaining how her mission mirrored that brand’s emphasis on sustainability, and convinced its managers to host her first pop-up. She sold out in one afternoon—and knew she was onto something.
In June 2018, after another year and a half of successful pop-ups, Miller opened one of the first zero-waste grocery stores in Canada. She named it Nada, and ensured everything was designed to make the zero-waste shopping experience easy. You can bring your own containers, though it’s not necessary: right by the front door are well-organized bins of “upcycled” sanitized glass or plastic containers, free for the taking.
Nada sells the food items you’d expect and hundreds you wouldn’t, all 100 percent package-free. The suppliers must have a social or environmental mission, and just as importantly, they must work to reduce waste in their own supply chain.
Miller is clear that the store doesn’t try to compete on price. For example, popcorn kernels at a generic store may cost 70 cents per 100 grams; at Nada, a customer might pay $1 per 100 grams, knowing that the kernels are organic and non-GMO.
The early days of the pandemic were tough on the business. Nada closed its doors to the public for 18 months. Miller turned to online ordering and delivery, though in a very Nada way. Carbon neutral deliveries are made by c-bike and, as of February, via a fleet of electric vehicles.
Those containers do so much more than just reduce waste. They get people thinking big, just as Miller had hoped they would. “They’re tagged with Nada stickers, so you can see how many times the container has been used,” she says, and then smiles.
1. When travelling around the world, what did Brianne Miller discover?A.One third of all food produced worldwide went to waste. |
B.Most of what Canadians picked up came from food packaging. |
C.Lots of plastic littering the water was threatening marine life. |
D.Everything could be designed to make the zero-waste shopping experience easy. |
A.Avoided and stayed away from. | B.The activity of offering |
C.Worried about or feared something | D.Left something undone. |
a. Miller determined to solve the problem about waste at the source.
b. Miller opened one of the first zero-waste grocery stores named Nada.
c. Miller convinced a store to host her first pop-up.
d. Miller closed Nada to the public for 18 months and then turned to online ordering and delivery
A.a-b-c-d. | B.a-c-b-d. | C.c-d-b-a | D.b-c-a-d. |
A.Because Nada tries to compete on price. |
B.Because bulk food sales were restricted. |
C.Because zero-waste shopping can come with savings. |
D.Because the kernels at Nada are organic and non-GMO. |
1. 活动时间、地点;
2. 活动内容。
注意:1. 词数100左右;
2. 开头和结尾已给出, 不计入总词数。
Dear Henry,
How have you been these days?
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Yours sincerely,
Li Hua