1 . Deepfake: synthetic (合成的) media, including images, videos, and audio, is generated by Al technology to show something that does not exist or events that have never occurred.

Examples of deepfakes have been widely spread, including a video of Facebook CEO Mark Zuckerberg giving a speech about his company’s plan, and a video of Elon Musk dancing and talking about the power of dreams, etc.

It’s easy for AI to produce such deepfakes using two different deep-learning algorithms (算法): one that creates the best possible clone based on a real image or video and another that detects whether the copy is fake (伪造的) and, if it is, reports on the differences between it and the original. The first algorithm produces a synthetic image and receives feedback on it from the second algorithm and then adjusts it to make it appear more real; the loop is repeated as many times as it takes until the second algorithm does not detect any false imagery.

Deepfakers often have evil motives, including creating misinformation and generating confusion. They tend to demean, terrify, and annoy, and have targeted not only celebrities but ordinary citizens as well.

Most of the academic research surrounding deepfakes focuses on the detection of huge amount of deepfake videos emerging online. One detection approach is to use algorithms to identify inconsistencies in deepfake videos. For example, an automatic system can examine videos for errors such as irregular blinking patterns of lighting. However, these approaches have been criticized because deepfake detection is characterized by a “moving goal post” where the production of deepfakes is changing and improving while detection tools are always on the way of catching them up.

However, education and medicine are two of the fields that may benefit from deepfake technology. In the classroom, historical speeches could be deepfaked to offer immersive and engaging lessons. In health care, it can improve the accuracy with which tumors (肿瘤) are spotted, making them easier to treat. Its use also permits using synthesized data instead of that from real patients to avoid privacy concerns.

1. How does AI create a deepfake video according to the passage?

A．By copying and combining the fake images.

B．By constantly teaching itself to perfect the output.

C．By acquiring feedback from multiple sources.

D．By repeatedly generating realistic images from scratch.

2. What is the challenge of detecting deepfake videos?

A．Ever-evolving deepfake techniques.	B．Insufficient academic basis on detection solutions.
C．A massive number of false videos online.	D．Limited availability of detection tools.

3. What is the author’s attitude toward deepfake?

A．Supportive.

B．Critical.

C．Objective.

D．Unconcerned.

4. What is probably the best title for the passage?

A．Potential threats: AI’s new playground	B．Deepfake: Human’s another helping hand
C．Artificial Intelligence: A piece of fake	D．Detecting deepfake: An ongoing battle

2 . Filming in the Wasatch-Cache National Forest

The Kamas Ranger District handles film permits for the Kamas district of the Wasatch- Cache National Forest.

To ensure that permits are issued in time for filming, the Forest Service requests that application form be handed in three to four weeks prior to filming.

The fee structure for filming in the National Forest is as follows:

Filming Special Use Fee

1 to 10 people-$150 per day

11 to 30 people-$200 per day

31 to 60 people-$500 per day

Over 61 people-$600 per day

Film Monitoring Fee

1 day filming-FREE

Extra days-$200 per day

Additional Fees

Additional fees will be charged in the following situations:

Large production (greater than 100 people), multiple site filming that may require additional film monitoring to protect natural resources and a performance agreement in the form of a deposited check.

Upon approval, a Special Use Permit will be issued with a bill for collection. Checks should be made payable to “USDA Forest Service, ” and payment must be received before filming.

Note

Some areas of the forest are especially sensitive to impacts from vehicles, domestic animals, and people. These areas include wetlands, streams, lake shorelines, and most meadow areas. Filming requests in these sensitive areas will require special surveys to determine possible environmental impacts. The request may be denied.

1. What is one expected to do for filming?

A．Issue the permit weeks before filming.	B．Submit the application form in advance.
C．Give top priority to time arrangement.	D．Outline the fee structure in the forest.

2. How much will a week’s film monitoring be charged?

A．$1200.

B．$200.

C．$1400.

D．$600.

3. Which of the following will be charged additional fees?

A．Paying the bill in cash.	B．Entry into the sensitive areas.
C．Production with over 61 people.	D．Filming in different sites.

3 . In early October, Travis Gienger transported an enormous pumpkin (南瓜) from his home in Minnesota to the World Championship Pumpkin Weigh-Off in California. His pumpkin set the record for the biggest one ever grown in North America. How do competitive growers get their pumpkins to grow to massive sizes?     1    

Gienger, who teaches horticulture (园艺学) at Anoka Technical College, begins growing his pumpkins in mid-April, starting with seeds that he grows indoors for the first few weeks, when Minnesota’s soil is too frosty.     2     They can absorb sunlight, nutrients from the soil, and water there. “At their peak, you’re watering them with at least 600 liters a day, ” he says.

Depending on the variety, pumpkin plants can grow up to a dozen fruits on a single vine (藤曼) . But to maximize size, growers remove all but one or two of these pumpkins in order to decrease each individual fruit’s competition for resources.     3    

But what exactly happens inside a pumpkin as it grows? Two factors drive natural growth: cell division and cell expansion. Cell division accounts for most of the growth at the beginning of a fruit’s life. This period lasts for about 20 days in pumpkin plants.     4     Pumpkin cells will expand until around 50 or 60 days after pollination (授粉).

    5     Some varieties of pumpkins have been bred specifically to maximize their size. Still, there is genetic variation even among pumpkins of the same variety. This has led to competition for the best seeds. Following each harvest, many growers auction off (拍卖掉) the seeds from their biggest pumpkins, which will then be used for the following year’s plantings.

A．Biology has the answers.

B．Genetics also influences pumpkin growth.

C．The following tips will give you a head start.

D．Once it warms up, the plants are transferred outside.

E．When it stops, cell expansion will then come into play.

F．Growers extend the growth period for as long as possible.

G．Growers also remove the weeds in the area for the same reason.

4 . In today’s digital era, social media users are increasingly coming across fake news online. This leads to the pressing issue: What causes people to fall for misinformation on the Internet?

According to researchers at the Penn State College of Information Sciences and Technology,   users can easily fall into an echo chamber (回声室)—a sort of virtual space where users consume only one-sided news, eventually distrusting any opposing views. “We all tend to agree with the group opinion. Hence, people naturally get together with others who hold the same opinion,” said Dongwon Lee, one of the researchers. “But if you’re not cautious, there is a high risk of falling into an echo chamber.”

To prevent this phenomenon, the researchers have crafted a novel tool, a game named ChamberBreaker, to help players resist echo chambers and reduce the rate of fake news spread. The fundamental approach employed by ChamberBreaker centers around a decision-making procedure that mirrors the creation of echo chambers. In ChamberBreaker, a player is tasked with trying to have community members fall into an echo chamber. To begin, the player is randomly assigned a situation that focuses on a health, political or environmental issue, and is presented with six pieces of news on that topic. Then, the player selects news that could cause the other members to fall into an echo chamber while at the same time maintaining their trust. If successful, the community members will fall into an echo chamber and the player will witness the resulting negative effects on the community.

After developing ChamberBreaker, researchers tested it with over 800 subjects to see if it raised awareness of echo chambers and changed news consumption behaviors. The researchers found that those who played ChamberBreaker were significantly more likely to state their intention to observe online information from more diverse perspectives and showed an increased awareness of the echo chamber phenomenon.

Ultimately, the researchers hope that their methodology can excite a greater interest in the scientific and scholarly study related to information consumption. The application of tools like ChamberBreaker, which focuses on fostering analytical reasoning, may lead us towards a more informed online community.

1. What can be learned about an online echo chamber?

A．It encourages well-judged views.

B．It gathers like-minded individuals.

C．It functions as a virtual reality platform.

D．It serves as a tool for identifying fake information.

2. What is ChamberBreaker’s core method against echo chambers?

A．Assignment of situations.	B．Trust-building exercises.
C．News selection strategy.	D．Community impact assessment.

3. Which of the following can show ChamberBreaker’s effectiveness?

A．The results of scientific testing.

B．The theoretical framework of the game.

C．The description of the game procedures.

D．The common challenges faced during gameplay.

4. What is the likely long-term effect of playing ChamberBreaker?

A．Reducing news inquiry.	B．Encouraging passive reading.
C．Strengthening prejudiced views.	D．Enhancing critical thinking.

5 . The California sea otter (海獭), once hunted to the edge of extinction, has staged a thrilling comeback in the last century. Now, scientists have discovered that the otters’ success story has led to something just as remarkable: the restoration of their declining coastal marsh (沼泽) habitat.

Elkhorn Slough, a coastal marsh within Monterey Bay, had been experiencing severe damage. The root cause was a growing population of shore crabs, which fed heavily on the marsh plants, weakening the structural integrity of the habitat. Coastal marshes like these are not only natural defenses against storm waves but also serve as important carbon storage areas and water-cleaning systems.

The conservation-driven comeback of the sea otter has been crucial. California’s coastlines were once alive with sea otters. Sadly, they were nearly wiped out at the hands of fur traders. In the 1980s, conservation efforts aided these otters in re-occupying large areas of their former range. Now, Elkhorn Slough has the highest concentration of sea otters in California, with a population of about 100. By naturally feasting on crabs, the otters have helped a significant regrowth of plant life. Brent Hughes, a scientist working alongside Angelini, led a three-year study. Their findings were clear: in areas with sea otters, crab numbers fell markedly. This led to a resurgence in plant growth, which in turn stabilized the soil and lowered the rate of soil washing away.

As the sea otter population continues to restore, their positive impact on coastal ecosystems is likely to increase. It not only showcases the sea otter as a central species—a species that has a significant effect on its natural environment—but also highlights the essential nature of top predators (捕食者) in preserving ecological harmony. “My honest reaction was—this could become a classic in the literature,” says scientist Lekelia Jenkins. She reveals marsh restoration also helps people by reducing flooding. “Suddenly, sea otters go from just cute things we like to something that can protect our livelihoods and our properties.”

1. What change did the disappearance of sea otters bring about?

A．Fewer predatory crabs.	B．More coastal plant life.
C．Better water-cleaning effect.	D．Worse coastal ecological balance.

2. What does the underlined word “resurgence” in paragraph 3 mean?

A．Barrier.

B．Advancement.

C．Expansion.

D．Revival.

3. What is the author’s purpose in quoting Lekelia Jenkins?

A．To highlight the importance of coastal marshes.

B．To introduce a new research study on sea otters.

C．To demonstrate the practical benefits of sea otters.

D．To emphasize the need for increased conservation efforts.

4. What message is conveyed from sea otters’ impact?

A．The necessity for controlled hunting.

B．The interconnectedness of the ecosystem.

C．The drawbacks of wildlife reintroduction.

D．The need for human intervention in nature.

6 . US Army veteran (退伍老兵) Mazyck remembers when doctors told her she would never walk again. She’d been paralyzed from the waist down after a serious accident while parachuting in 2003.The doctors never said anything about floating, though. In 2021,she got to do just that.

Mazyck was one of 12 participants in a Zero G flight, organized by the group AstroAccess. This type of flight recreates the weightlessness that astronauts experience without going all the way to space. Flying over the Pacific Ocean off Southern California, the modified 747 jet airplane made 15 steep dives and climbs, allowing the flyers multiple periods of weightlessness.

The experience left Mazyck feeling joyful. “The flight was something that I would have never in my wildest dreams thought I would’ve experienced,” she says, “especially the floating, the weightlessness.”

Traditionally, strict physical requirements have prevented disabled people from becoming astronauts. AstroAccess is working to make space accessible to all. “Space removes the barriers between people; now is the time to remove the barriers to space itself,” says Mazyck, “It is sending a message to people who have historically been excluded from STEM that not only is there room for you in space, there is a need for you.”

During the flight, she says, the participants did experiments and made observations. They took note of things that people without certain disabilities might not realize are issues. For example, people who couldn’t grip with their legs needed another way to hold themselves still while weightless. The group also experimented with signaling lights for the deaf and with ways of using braille (盲文) for the blind.

These types of issues are easy enough to address. Now is the time to make space accessible — before space tourism or space settlements become commonplace. “I am so proud and elated about what’s happening here,” Mazyck adds. “We are paving the way for the future.”

1. What do we know about AstroAccess?

A．It redesigns jet airplanes.	B．It offers weightlessness experience.
C．It provides physical treatment.	D．It trains the disabled to be astronauts.

2. What is required in the flights for the participants?

A．Astronaut experience.	B．Steep dives and climbs.
C．Weightlessness periods.	D．Trials and observations.

3. Which of the following words can best describe Mazyck?

A．Generous and determined.	B．Caring and persistent.
C．Courageous and optimistic.	D．Ambitious and innovative.

4. Which of the following can be the best title of the passage?

A．Paving the Way for the Future	B．Disabled Americans Make It to Space
C．Making Space a Place for Everyone	D．US Veterans Experience Zero G Flight

7 . The more you meditate and achieve mindfulness, the better you’ll feel. There are many free meditation apps that offer guided sessions, calming playlists.

Headspace

This app is simple and approachable for meditation beginners. Most of the free sessions focus on teaching the users how to meditate and easing them into the practice, while also acknowledging that meditation can be difficult. Yet to get into the really good stuff, you need to pay for the full membership.

Insight Timer

The app offers a multitude of meditation bells and calming musical notes during self-guided meditations. Featuring a variety of professional instructors and courses, Insight Timer also offers more contents for free users than other apps. Although the free option is extensive, the premium version (高级版) offers courses, downloadable meditations, night mode, and daily insights.

Meditation Studio

The app groups all its free meditations together, so it’s easy to use it without paying. These meditations run from 5 to 30 minutes and are available for download, a feature that other apps typically reserve for premium members. The number of free contents, however, is limited and included mostly basics. The design of the app is also relatively plain.

Breethe: Meditation & Sleep

A nice feature about Breethe is the calming background music that plays while the app is open, even without opening a meditation or music. Breethe offers a lot of sleep contents, including visualizations and bedtime stories. The app does offer a few 7-day courses for free, but the majority (1,000-plus meditations) is locked behind the paywall.

1. Which app is completely free of charge?

A．Headspace.	B．Insight Timer.
C．Meditation Studio.	D．Breethe: Meditation & Sleep.

2. What is special about Headspace?

A．Courses from professional coaches.

B．Advanced instructions of meditation.

C．Bedtime stories and calming background music.

D．Guidelines on how to get into meditation at the beginning.

3. What do Insight Timer and Breethe: Meditation & Sleep have in common?

A．They have a night mode set.	B．They provide contents on sleep.
C．They have calming background music.	D．They offer free contents of the same period.

8 . Cork is a light brown material harvested from the cork oak tree. Cork is lightweight, strong and resistant to water.     1     For thousands of years, people have used pieces of cork as closures for bottles because cork is made of small cells filled with air. It is said that no technology has been able to copy this unusual material exactly.

The cork oak tree is native to the western Mediterranean coast of Europe.     2     In fact, Portugal produces more than half of the world’s cork supply. Cork oak trees have to be at least twenty-five years old before they are ready for harvest.     3     Cork is gathered by skillfully cutting off the outer layer of the tree with special knives. The harvest weakens the tree temporarily, but it soon starts to grow a new layer of bark. Next, the cork harvest is set out in the open for six months. Then, the cork is boiled in order to clean it and make it softer.     4    

Because cork oak trees are not killed during harvest, they can live for as long as 200 years. Also, used cork products can be recycled and used again. This makes cork a valuable renewable resource.     5    Wine makers say cork stoppers in their bottles let the wine be aged and improve over time. But now some wine producers are changing to plastic or metal closures. Some environmentalists worry that if cork starts to lose its value, the cork oak forests in Europe will no longer be protected.

A．After drying, the cork is ready to be cut.

B．Harvests only happen once every nine years.

C．Cork has even found a use in making rockets.

D．It is best known for keeping liquids from spilling.

E．Cork can be shined and used to cover floors and walls.

F．The largest cork oak forests in the world are in Portugal.

G．The wine industry has been a major supporter of cork production.

9 . Dutch researchers have discovered that birds living in cities are using metal spikes (尖刺) to build their nests. People put these spikes on buildings in order to keep birds off their balconies, benches, and chimneys, but birds seem to be stealing them and using them to keep people away from their eggs.

The research began when, in the courtyard of a hospital in Antwerp, Belgium, biologist AukeFlorian Hiemstra found a large nest that had been built by a magpie (喜鹊). The nest was made from about 1,500 metal spikes. They were pointing outward to create a protective system around the nest.

“I just stared at it, this strange, beautiful, weird nest,” Hiemstra told BBC News. When he investigated further, he found that magpies had moved away nearly 165 feet of metal spikes that had been glued to the hospital’s roof.

After Hiemstra made this discovery, his team heard about a similar nest created by crows in Rotterdam, in the Netherlands, and another magpie nest in Glasgow, Scotland. The crows had positioned the spikes in a different way, perhaps using the metal to support the nest’s structure.

In their report, the researchers mention many kinds of birds moving spikes off buildings, but they chose to focus their study on corvids(birds from the crow family). The researchers pointed out that there have been previous studies on how corvids use everything from telephone wires to clothes hangers to build their nests. They said the use of anti-bird spikes “hints at a functional use”—meaning the birds seem to know exactly what they’re doing.

Magpies have often been seen nesting in thorny (多刺的) places, where the thorns can prevent people from attacking the small eggs and chicks inside the nest. Thorny hedges aren’t common in cities, however, so the theory is that magpies use the human-made version instead. Hiemstra calls this the birds’ “revenge”. “We’re trying to get rid of birds, but the birds are collecting our metal spikes and actually making more birds in these nests,” he said.

1. Why are metal spikes put on buildings?

A．To draw birds’ attention to the nest.	B．To prevent strangers entering.
C．To keep birds off the buildings.	D．To make the buildings more beautiful.

2. Magpies use metal spikes to build nests ________.

A．to protect their eggs and chicks	B．to decorate their nests
C．to provide a strong hold	D．to support the structure of the nests

3. What does Hiemstra think of birds’ collecting metal spikes?

A．Disappointing.	B．Appreciative.
C．Confusing.	D．Indifferent.

4. What is the purpose of the passage?

A．To introduce a new species of bird that has adapted to city life.

B．To compare different nesting habits of birds in urban environments.

C．To emphasize the negative impact of human activities on bird habitats.

D．To inform readers about birds using metal spikes to build nests in cities.

10 . 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.

2. What is most crucial in keeping temperatures stable?

A．Planting more trees.	B．Exploring heatwaves.
C．Conducting researches.	D．Pursuing low emissions.

3. What was Disney’s suggestion in the last paragraph?

A．Promoting global efforts.

B．Seeking economic support.

C．Helping tropical countries.

D．Boosting low-carbon education.

4. What can be a suitable title for the text?

A．Global warming harms trees.

B．Tropical forests lose functions.

C．Tropical leaves struggle in heat.

D．Forests near dangerous temperature.