1 . James Rainey reads trees like most people read signposts. The senior ecologist is using a small hand camera to identify a lichen (地衣) that is surrounding the base of wild pines (松树) in a deep narrow valley on the west coast of Scotland. He is looking for ecological clues of species associated with the ancient Caledonian Forest, which once covered most of the Highlands.

Wild pines have been growing in Scotland continuously since the ice age, offering a globally unique ecosystem supporting rare wildlife. But now less than 2% of the original growth survives, with just 14 individual Caledonian pinewood sites now officially recognized. “To meet the demand for more wood, many wild pines in Highlands have been removed to make room for commercial forestry,” says Rainey. “This was often done in ancient woodlands and was really damaging to the remaining trees.”

But restoration is still possible, especially since some old trees still survive along with the ancient woodland soil and seedbank—seeds stored in the soil, which can grow once the heavy shade of commercial conifers (针叶树) is removed.

The ecological investigator uses three clues of evidence to discover where these pinewoods first stood. “First there’s the historical evidence, like old maps and texts. Then comes the landscape context: is the pine associated with planting around a big house, or is the setting more natural? And finally I use the ecological evidence: wild pine usually grow alongside old birch trees, which indicates ecological continuity,” explains Rainey.

Rainey has identified 23 pines in this area, all rooted in places least accessible. Their needles have been taken for genetic testing to confirm their family trees. “This would have been filled with trees but is now empty — these are the most critical areas in need of regeneration and we want the whole of the ancient woodlands to recover, not just the pines,” he said.

1. Why are the wild pines considered to be so significant?

A．They act as a signpost for the highland.	B．They are an indicator of an ancient forest.
C．They are an alternative to commercial forestry.	D．They provide a shelter for certain species of lichen.

2. What is essential for the restoration of ancient pinewoods?

A．The existence of ancient seeds.	B．The presence of commercial conifers.
C．The awareness of the forest protection.	D．The application of the advanced technology.

3. How does Rainey determine the original location of the pinewoods?

A．By locating big houses.	B．By consulting historians.
C．By referring to digital maps.	D．By making the most of surroundings.

4. What is the ultimate Rainey’s goal?

A．To confirm the genes of the pine.	B．To restore the old-growth woodlands.
C．To explore the unfrequented places.	D．To enrich the diversity of the wild pines.

2 . Space weather forecasters have issued a geomagnetic storm watch through Monday, saying an outburst of plasma from a solar flare could interfere with radio transmissions on Earth. It could also make for great aurora viewing.

There’s no reason for the public to be concerned, according to the alert issued on Saturday by the U.S. National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Prediction Center in Boulder, Colorado.

The storm could interrupt high-frequency radio transmissions, such as by aircraft trying to communicate with distant traffic control towers. Most commercial aircraft can use satellite transmission as backup, said Jonathan Lash, a forecaster at the center.

Satellite operators might have trouble tracking their spacecraft, and power grids could also see some “induced current” in their lines, though nothing they can’t handle, he said. “For the general public, if you have clear skies at night and you are at higher latitudes, this would be a great opportunity to see the skies light up,” Lash said.

Every 11 years, the sun’s magnetic field flips, meaning its north and south poles switch positions. Solar activity changes during that cycle, and it’s now near its most active phase, called the solar maximum. During such times, geomagnetic storms of the type that arrived on Sunday can hit Earth a few times a year, Lash said. During solar minimum, a few years may pass between storms. In December, the biggest solar flare in years disrupted radio communications.

1. What is the main topic of the passage?

A．The effects of solar flares on Earth.

B．The causes of geomagnetic storms.

C．The work of the Space Weather Prediction Center.

D．The beauty of aurora displays.

2. According to the alert issued by NOAA, what is the public advised to do?

A．Avoid using high-frequency radios.

B．Prepare for possible power outages.

C．Enjoy the aurora if conditions are right.

D．Stay indoors during geomagnetic storms.

3. Why are commercial aircraft not likely to be affected by geomagnetic storms?

A．They use satellite transmission as backup.

B．They communicate with nearby traffic control towers.

C．They are equipped with special radios for such events.

D．They avoid flying during periods of high solar activity.

4. How often do geomagnetic storms of the type mentioned in the passage occur during the solar maximum?

A．Every few months.

B．Once or twice a year.

C．Once every 11 years.

D．Only during solar minimum.

3 . A multinational team of astronomers, led by Israel’s Weizmann Institute of Science (WIS), has captured a “once-in-a-lifetime” supernova and mapped it in “unprecedented” detail, the WIS said in a statement on Wednesday.

A supernova is a massive star explosion that occurs when a star burns through its fuel at the end of its lifespan, resulting in a brilliant burst of fiery plasma in vibrant colors radiating with the brightness of a hundred million suns. As described in the journal Nature, the team used NASA’s Hubble Space Telescope to witness in real-time one of the closest supernovae in decades, a red supergiant star exploding in a neighboring galaxy, Messier 101.

The researchers were able, for the first time, to closely follow a supernova while its light emerged from the circumstellar material in which the exploding star was embedded. They then acquired data on the star from times before its demise when it was just a red supergiant star, thus creating the most complete portrait of a supernova, a composite of its last days and death.

The team also found a gap between the mass of material ejected from the star during the explosion and its original mass, suggesting that the supernova left behind a black hole into which the missing mass was swallowed. The researchers concluded that “this study presents a unique opportunity to better understand the mechanisms that lead to the conclusion of a star’s life and the eventual formation of something entirely new.”

1. What is a supernova according to the passage?

A．A star’s natural aging process.

B．A brilliant burst of fiery plasma.

C．A collision between two stars.

D．A black hole swallowing matter.

2. The supernova described in the journal Nature was witnessed in which of the following ways?

A．Through a ground-based telescope.

B．By the Weizmann Institute alone.

C．Using NASA’s Hubble Space Telescope.

D．By mapping it in unprecedented detail.

3. What did the researchers discover about the supernova?

A．It left behind a neutron star.

B．Its light emerged from circumstellar material.

C．It exploded in the Messier 101 galaxy.

D．Its mass was similar to that of a red supergiant.

4. What does the study suggest about the missing mass from the supernova?

A．It was ejected into space.

B．It formed a new star.

C．It was swallowed by a black hole.

D．It turned into circumstellar material.

4 . Each fall, millions of butterflies across the U. S. and Canada fly up to 4, 000 km to central Mexico. Travelers can see the butterflies overwintering on the Western Monarch Trail, a 465-mile, road trip-friendly conservation initiative that links over a dozen stops along the route.

Helping the butterflies

Organizers created educational panels in English and Spanish explaining the butterflies’ annual traveling and their trouble. The signs also outline ways travelers can help the butterflies recover, such as by supporting chemical-free farms and planting native nectar (花蜜) gardens.

Why butterflies fly to the California coast

Many stops in Pismo State Beach Monarch Butterfly Grove and Andrew Molera State Park, are overwintering sites where, from October to February, travelers can see thousands of butterflies gathering in forests in areas with mild temperatures, dappled (斑驳的) sunlight, high dampness, and little to no wind.

Other sites, like the San Luis Obispo Botanical Garden and Avila Valley Barn, growflowers that provide sugary, high-calorie food for the butterflies to eat. Butterflies settling here demonstrate how vital nectaring plants are to their survival.

How to explore the Western Monarch Trail

The butterflies’ behavior varies at different times of day and depending on the weather. In the mornings, while temperatures are still cool,     step out of the cabin (木屋) in the Fernwood Resort where you stay overnight, you’ll find many butterflies hanging together on the branches and trunks of trees at the overwintering sites. As the day starts to heat up-typically by late morning or early afternoon — you’ll be amazed at the phenomenon “sunburst” — the butterflies start flying around in search of nearby nectar. Keep your eyes skyward. Don’t grab your camera. Just be in the moment.

1. What’s the Western Monarch Trail initiative aimed at?

A．Providing a travel route.	B．Encountering butterflies.
C．Promoting organic farming.	D．Advocating species conservation.

2. What do we know about Andrew Molera State Park?

A．It holds many nectar gardens.

B．It’s pleasant throughout winter.

C．It has sufficient food for butterflies.

D．It’s home to butterflies all year around.

3. What is guaranteed for the travelers along the Western Monarch Trail?

A．Signs to guide the route.

B．Cameras for recording videos.

C．Ready shelters to stay overnight.

D．Experience of watching “sunburst” at dawn.

5 . New research shows that removing black rhinos’ horns (犀牛角) to make them less attractive to illegal hunters is reducing their territory (领地) sizes and making them less sociable with each other.

The study, published in the journal PNAS, found that de­horned South African rhinos have home ranges that are 45 per cent smaller than those of complete animals, and that they were 37 percent less likely to engage in social interactions.

“The big, dominant bulls that used to have very large territories that overlapped with a lot of females may now have much less territory and much less reproductive (繁殖的) success,” says Vanessa Duthé, who led the work at Switzerland’s University of Neuchâtel.

“It’s really hard to predict the effects of this,” she says. “It doesn’t mean that population success will necessarily decline, because it might open up gaps for younger males that would not have had the space or the means before.” Indeed, a University of Bristol study published last year showed that de­horning (去角) does not negatively affect populations overall.

But such unintended behavioral consequences necessarily feed into judgments about whether this highly invasive procedure is worthwhile. Remarkably, perhaps, there is little hard evidence either way. “No one’s put all the data together to say whether it’s a really effective measure,” says Duthé.

“What is clear is that the introduction of de­horning and a decline in illegal hunting has occurred at the same time,” she adds. “But de­horning has been accompanied by other conservation measures that may be more effective.”

“It’s incredibly complicated,” says Lucy Chimes, a member of the Bristol team. “There are so many other factors involved. You have to consider what other security measures are being carried out — fencing, patrols, staff numbers — and poverty levels surrounding parks, their nearness to national borders and whether there is community engagement.” Chimes is currently planning a project that aims to separate these and other factors. In the meantime, Duthé believes that de­horning is a worthwhile tool of last course of action. “A rhino that is behaving a little bit strangely is better than a dead rhino.”

1. What is the purpose of removing the horns of black rhinos?

A．To make them less sociable.	B．To protect them from being hunted.
C．To reduce their home ranges.	D．To affect their reproductive success.

2. What does the underlined phrase “invasive procedure” in paragraph 5 refer to?

A．The removal of rhino horns.	B．The loss of rhino territories.
C．The impact on rhino population.	D．The change of rhino behavior.

3. What is Chimes’ attitude toward the de­horning of black rhinos?

A．Supportive.

B．Opposed.

C．Unconcerned.

D．Uncertain.

4. What can we learn from the last paragraph?

A．De­horning rhinos shows satisfying effects.

B．Various factors lead to the decline in illegal hunting.

C．De­horning is the last action researchers will take.

D．Rhinos are supposed to behave a little bit strangely.

6 . A couple has recently placed their garbage can out for collection for the first time in 14 months, all thanks to their recycling skills. Richard and Louise Arnold have established such an effective routine that they only need to put their garbage can on the side of the street once a year.

Louise explained that making small monthly changes in her life has resulted in her family producing very little waste. She said, “It’s not as difficult as you might think if you start with small steps. We began with soap, switching from bath cream to natural soap without packaging. These bars are large enough that we cut them in half, using one for the sink and the other half for the shower. It’s both cost-effective and environmentally friendly.”

“So it’s actually quite easy. Just go around your house and think of little things you can do gradually, and you’ll start noticing the difference,” Louise added. Currently, the couple takes recyclable waste to the tip, donates clothes to charity shops, and brings soft plastics and batteries to a shop that accepts them.

In 2017, the couple established No Waste Living, which initially started as a weekend stall at the local market and has since developed into a website. Louise regularly writes a newsletter for her hundreds of subscribers. They also started selling eco-friendly products, ranging from non-chemical household cleaning and washing solutions for a “less toxic home” to bamboo washing-up brushes. Louise mentioned, “I started No Waste Living because I wanted to show our achievement s and lead by example.”

Although the family occasionally faces criticism, Louise remains determined. She said, “The main point of contention(争论) for people regarding new waste rules is having to drive their waste to a recycling center, which adds to their already busy lives. However, in the long run, you will create more space in your home, save money, and spend less time dealing with garbage cans.”

1. How did the couple start their waste reduction journey?

A．By replacing small soaps with large ones.	B．By using a small amount of bath cream.
C．By using unpackaged soap bars.	D．By recycling soft plastics and batteries.

2. Why did the couple found No Waste Living?

A．To bring eco-products to market.	B．To inspire others to follow in their footsteps.
C．To treat recyclable waste from the neighborhood.	D．To answer the call of their subscribers.

3. Why do some people dislike new waste rules?

A．They mean more work to deal with garbage.

B．They increase the cost of garbage collection.

C．They establish a set time for waste management.

D．They limit the daily amount of garbage for collection.

4. What is the text mainly about?

A．A business - minded couple.	B．The “less poisonous home” concept.
C．The global trend in recycling.	D．A planet- friendly lifestyle.

7 . Re-purposing diapers to make building materials would reduce the amount of garbage that goes to a landfill. It could also make homes more affordable. Maybe giving used diapers a new use could help tackle both problems.

Building material—especially those that are used for strengthening structures — are often expensive. They’re often the biggest hurdle to making homes affordable. So researchers have previously investigated unusual materials that could save costs. These materials included many that would otherwise pile up as waste, such as fly ash.

“There is a big need in developing countries such as the Southeast Asian nation, Indonesia. There, demand for low-cost housing outstrips what’s available. The number of people in Indonesia’s cities has climbed by about 4 percent per year in the last 30 years. By 2025, more than two-thirds of Indonesians are expected to live in urban areas. Indonesia’s population boom is intensifying the demand for housing,” says Siswanti Zuraida, an environmental engineer in Indonesia.

“Despite the need for more affordable housing, there are significant problems that stand in the way of adopting diapers,” Zuraida says. Used diapers contain wood pulp, cotton and plastic, which are potentially useful building materials. Diapers plastic components would have to be separated from the organic fibers, a complicated recycling process currently available only in developed nations. And Indonesia’s building regulations restrict together-materials to bricks, wood, steel and concrete (which is used to hold bricks together) — materials that also bear a high cost in terms of carbon emissions.

But reusing diapers might not be that environmentally friendly, especially on a large scale. “It’s tricky to separate dirty diapers from waste and disinfect them. So it would take a lot of energy to recycle diapers. It’s maybe worthwhile to start thinking about ways to replace single-use diapers with something less frequently thrown away,” says Christof Schrofl, a chemist who works at Technische Universität Dresden in Germany.

1. Which statement describes the idea of re-purposing diapers best?

A．No pains, no gains.	B．Waste not, want not.
C．Kill two birds with one stone.	D．Great minds think alike.

2. What is the meaning of the underlined word in Paragraph 2?

A．Phase

B．Barrier.

C．Goal.

D．Advantage.

3. What can be inferred from the fourth paragraph?

A．It is illegal to use diapers as building material in Indonesia.

B．Making building materials has little effect on climate warming.

C．The plastic components in diapers can make buildings stronger.

D．Developed countries have difficulty separating organic fibers on diapers.

4. What is Schrofl’s attitude towards reusing diapers?

A．Indifferent

B．Supportive.

C．Admiring.

D．Objective.

8 . A kindhearted family put themselves in a risky situation to rescue an aggressive owl that had become trapped in a soccer net. One morning, the Larsons discovered a trapped owl on the football field. They immediately wanted to rescue the poor owl, but they found that the owl was very aggressive. Fearful of the owl’s sharp claws and beak, Dave Larson approached with caution when he discovered the bird in his family’s soccer goal in Oak Creek, Wisconsin.

In the dramatic footage, the distressed owl can be seen tangled in the netting while Dave slowly but surely attempts to cut the bird free. During the proceedings, Dave’s wife, Sue, filmed the rescue, which saw the startled bird snap at Dave on numerous occasions, stretching out its claws every time he got close. Fortunately, the family was able to free the distressed bird, with their son Travis sharing the clip online where they were showered with praise for assisting the animal on September 27.

Sue said: “We were very nervous knowing how strong and sharp his beak was, which he kept snapping to scare us. He also kept stretching his claws out every time we got close to him. We were able to feel a little more at ease when the owl eventually realized we weren’t trying to hurt him, and he seemed to relax and let us cut him free. As soon as he flew away, there was instant relief of the situation. But it was more happiness at knowing he was alright and being able to see him fly and move without injury.”

This beautiful story warms people’s hearts and also tells us that man and nature need to coexist in harmony. When we take care to protect Nature, Nature rewards us generously; when we exploit Nature ruthlessly, it punishes us without mercy. We need to have deep reverence for Nature, respect Nature, follow Nature’s laws and protect Nature, so as to build a homeland of harmonious coexistence between man and Nature.

1. Who uploaded the video of freeing the owl online ?

A．Dave Larson.

B．Travis Larson.

C．Sue Larson.

D．Kyle Larson.

2. Which of the following best describe Dave Larson?

A．Mean and unfeeling.	B．Objective and impartial.
C．Enthusiastic and impractical.	D．Kind and friendly.

3. Why did this owl lose its aggressiveness eventually?

A．The owl realized they were trying to help him instead of hurting him.

B．The owl was severely injured and couldn’t move anymore.

C．The owl called the traffic police and the insurance company.

D．The owl didn’t sleep well yesterday morning and was tired.

4. What can be the suitable title for the passage?

A．Protecting the Environment Right Now	B．Keeping Up with the Larsons
C．Kindhearted Couple Free Aggressive Owl	D．A Natural Art Museum In the Larsons’ House

9 . It is late autumn—millions of gardeners across the northern hemisphere, pulled on their thickest sweaters, spent hours clearing large piles of leaves and packed them into plastic bags at the end of driveways.

In the US alone, nearly 10 million tonnes of garden waste go to landfill every year. That is a large amount of effort, not just from an environmental viewpoint but from that of our aching backs, too. So where does this advice come from? Well, it largely comes from the belief that thick fallen leaves can make plants under them unable to breathe, especially shorter grass. They shut down important photosynthesis (光合作用) and get in the way of the growth of the shorter grass. However, this received wisdom has recently been questioned by researchers at Wisconsin University.

The key finding of their new research was that although clearing fallen leaves is one of the most common gardening practices, it makes very little sense. In natural ecosystems, fallen leaves help return nutrients necessary for healthy plant growth to the soil, which greatly improves soil condition. Removing leaves year after year breaks this ecological (生态的) balance. Letting some leaves stick around to cover your garden is a great way to help your grass and the local ecosystem.

They further explained that if up to 50percent of your grass lawn (草坪) is covered by fallen leaves, you might as well go back indoors and put your feet up. The advantages of this light leaf coverage far outweigh the disadvantages—the leaves will quickly break down and help next year’s lawn grow far better than if you had cleared them. Only at over 50 percent coverage do the Wisconsin researchers recommend clearing.

So why not consider leaving the leaves? Save time, carbon and effort, and in exchange get a healthier lawn from this garden waste—that seems like a pretty good deal. And how many plastic bags could be saved by simply not binning fallen leaves every year? In the US alone, about 700 million.

1. What does the author describe in paragraph 1?

A．An amazing autumn game.	B．A common sight in gardens.
C．A hot attraction in the north.	D．An extreme weather event.

2. What is the received wisdom?

A．Fallen leaves need not be cleared.

B．Fallen leaves protect shorter grass.

C．Fallen leaves block photosynthesis.

D．Fallen leaves are hard to break down.

3. The new research finds clearing fallen leaves makes little sense, because ________.

A．it ruins city image	B．it breaks gardening rules
C．it affects local economy	D．it causes ecological damage

4. What’s the author’s attitude to Wisconsin University’s study?

A．Doubtful.

B．Positive.

C．Unclear.

D．Worried.

10 . Leave-No-Trace Camping

For those of us who love spending time in the great outdoors, wild spaces are very special. These are places we visit to recharge, or to fill our hearts with natural beauty.    1    If you feel this way, then you’re the perfect person to promote and practice Leave-No-Trace camping.

Its principles are to treat the wilderness the way a decent visitor would and leave everything just as you found it, with no evidence that you passed through.    2    That’s because your visit makes a minimal impact on the environment.

You can carry out these ideals in a number of ways. Begin by packing out all your litter. Whenever you go camping, take an empty trash bag with you and put all garbage into the bag. In addition, try not to damage vegetation.    3    Wherever you go, think about what your heavy shoes or boots are doing to the plants underneath and try to keep damage to a minimum.

It’s also important that you should not take things away from the wilderness. Rocks, plants, flowers and seashells are all part of the natural landscape.    4    Plus, many animals find homes and food in abandoned shells and flower-heads, and these are things they would miss if you collected them.

Leave-No-Trace camping is about being respectful and thoughtful. It’s about honoring the natural world and the creatures that live in it. If you love seeing an untouched mountain stream or a lovely field of wildflowers, then you’ve already taken the first step.    5    

A．This means not stepping into a wild animal’s space.

B．This is also called “low impact” or “no impact” camping.

C．Once taken away, they won’t be there for others to enjoy.

D．An increasing number of people take up camping in the wilderness.

E．When you put up your tent, try to find a place that’s already bare of plants.

F．We hate to see them littered with rubbish or any reminders of previous visitors.

G．Follow these basic practices and you can be models of the Leave-No-Trace philosophy.