A.Whether it helps with focus and concentration. |
B.If it’s a time-consuming practice. |
C.If it involves meditation or other techniques. |
D.How it affects sleep patterns and overall well-being. |
From a distance, the grey cement bridge looks unremarkable. Two tunnels on either side of the Trans-Canada Highway are in semi-circles that end bluntly on the pavement below. But on top, away from passing motorists’ eyes, lies a grassy oasis. Against the odds, pine trees and wildflowers have taken root here, giving the overpass a fringe of greenery. On the edges, wire fencing provides safe passage for wandering animals.
Tony Clevenger has dedicated much of his life to studying the performance of Banff’s wildlife crossing structures. When the first wildlife bridges went up, Clevenger, a researcher with the Western Transportation Institute, was living in Canmore, and recalls the distinctly negative atmosphere that surrounded what many saw as a hair-brained scheme by Parks Canada. Save for a few small crossings in the eastern United States, no one had ever attempted something like this before — and no one believed it would work. Editorials in the local paper scoffed at the “waste of taxpayers’ money” and confidently stated animals would never use the $2 million to $3 million man-made bridges. Others believed wolves would herd their prey into the fence, violently killing them before shocked tourists.
“This project started in a bad spot. There was a lot of opposition and criticism,” Clevenger says. “It took several years of good data, publishing in scientific peer-reviewed journals, to change people’s minds.”
Clevenger now has 17 years-worth of data proving the efficacy of the crossings. Among large carnivores, mortality (死亡) rates are 50 to 100 per cent lower along sections of the highway where overpasses and underpasses exist. In those same sections, mortality rates for elk are almost zero, compared to 100 elk-vehicle collisions per year in the mid-1990s. Clevenger’s research has shown that 11 species of large mammals in Banff have used the structures more than 200,000 times, including unexpected species such as red fox, hoary marmot, boreal toads, wolverines, lynx, garter snakes and beavers.
In 2014, a Montana State University study found that not only are grizzly bears using the crossing structures, but the structures are also helping to maintain genetically healthy populations among the bears that use them. Grizzlies were crossing with enough frequency to ensure populations on either side of the highway weren’t genetically isolated from each other.
“This is Canada’s biggest conservation success story — it’s the largest highway mitigation complex in the world,” says Clevenger. “You won’t find anything anywhere else in the world close to what we have. We have the most overpasses in one localized area and almost half of all the overpasses in North America.”
1. Why did Tony Clevenger face opposition and criticism at the beginning of the wildlife crossing project?A.Because of disbelief regarding the project’s feasibility and effectiveness. |
B.Due to the design flaws of the crossing structures. |
C.Because of concerns about the environmental impact of the structures. |
D.Due to insufficient funding for the project. |
A.Grizzly bears and elk. | B.Wolves and red foxes. |
C.Garter snakes and beavers. | D.Hoary marmots and wolverines. |
A.It confirmed the disbelief surrounding the effectiveness of the crossings. |
B.It identified design flaws in the crossing structures. |
C.It criticized the Canadian government’s conservation efforts. |
D.It provided evidence of grizzly bears using the crossings and maintaining genetically healthy populations. |
4 .
Zion National Park in Utah has plenty of trails, but Angels Landing may be the most breathtaking. Picture this. You begin the hike on the wide and well-maintained West Rim Trail. It follows the river and then crosses the bottom of the canyon, surrounded by 270-million-year-old layers of rock. Relaxing, right? Just wait for it. The trail then starts to climb via a series of switchbacks (急转弯) leading up the side of the mountain. Then more switchbacks: 21 tighter turns, called “Walter’s Wiggles,” where elevation levels rapidly increase. Your heartbeat is probably rapidly increasing at this point, too.
On top of Walter’s Wiggles, you can stop for a stunning view (perhaps with a marriage proposal) and a restroom stop while you contemplate (仔细考虑) the final stretch of the hike. If you’re afraid of heights, it’s best to turn back now. The last stretch is the real test of bravery.
The last half mile of the hike is what really ranks it as one of the nation’s most dangerous. Angels Landing itself is a fin-like formation jutting (突出) 1,500 feet out of the canyon, and this is where you make the final 500-foot climb. Guardrails and chains bolted (拴住) into the cliff help you keep from tumbling over the extremely steep ledge. You’re literally living on the edge, and you don’t want to trust the “angels” down there to catch you. Once you reach the top, however, it’ll all be worth it: 360-degree views of the canyon make a great backdrop for kicking back and having a meal before you come back down the way you came.
Angels Landing might be dangerous, but thankfully, not too many people have had fatal falls. According to the park website, seven people have died in the 100 years the park has existed. Still, this is a very vigorous hike. If you’re out of shape, bringing young children along, feel ill or prone to fainting, or are just plain afraid of heights, opt for an easier trail.
Angel’s Landing is a great hike for most of the year, besides the cold winter months when the trails could become dangerously slippery. Summer is the most popular time of year — and therefore the most crowded — but it can also get extremely hot, so opt for an early morning hike while the temperatures are still mild.
Sure, it’s dangerous, but there’s a reason this is one of Zion ‘s most popular hikes. If you’re up for the challenge, Angels Landing will definitely deliver rewards.
This article first appeared on Curiosity.com.
1. What geological feature surrounds the hiker during the initial part of the hike?A.Plenty of trails in the park. | B.Mountain Peaks. |
C.270-million-year-old layers of rock. | D.Grass Meadows. |
A.The challenging hike with switchbacks. |
B.The 360-degree views of the canyon. |
C.The well-maintained West Rim Trail. |
D.The river crossing and rock formations. |
A.If a tourist is afraid of heights, it’s best to turn back onto Angels Landing. |
B.Seven people have died so far due to slippery trails in winter. |
C.Bringing young kids along to climb onto Angels Landing will be appreciated. |
D.Taking a break with the views of the canyon as background is absolutely worth the trip. |
A.Unveiling the Hidden Beauty: Exploring Zion National Park’s Trails |
B.Zion’s Ultimate Thrill: The Adrenaline-Pumping Angels Landing Expedition |
C.Chasing Heights: Angels Landing Adventure in Utah’s Zion National Park |
D.Angels Landing: Conquering Utah’s Breathtaking and Daring Hike in Zion National Park |
5 . The rate of childhood obesity in the U.S. has tripled over the past 50 years. But what this trend means for children’s long-term health, and what to do about it (if anything), is not so clear.
The American Academy of Pediatrics (AAP) made waves this year by recommending that doctors put obese kids as young as two years old on intensive, family-oriented lifestyle and behavior plans.
Yet the lifestyle programs the AAP recommends are expensive, inaccessible to most children and hard to maintain — and the guidelines acknowledge these barriers. Few weight-loss drugs have been approved for older children, although many are used off-label.
Rather than fixating on numbers on a scale, the U.S. and countries with similar trends should focus on an underlying truth: we need to invest in more and safer places for children to play where they can move and run around, climb and jump, ride and skate.
According to the U.S. Department of Health and Human Services’ Physical Activity Guidelines for Americans, children between ages six and 17 should get at least an hour of moderate to intense physical activity every day. Yet only 21 to 28 percent of U.S. kids meet this target, two government-sponsored surveys found. The nonprofit Active Healthy Kids Global Alliance evaluates physical activity in American children, and in 2022 the group gave the U.S. a grade of D–.
Why is it so hard to get kids moving? In addition to fewer opportunities at school, researchers cite increased screen time, changing norms around letting kids play outdoors unsupervised, and a lack of safe places for them to play outside the home.
New York City, for example, had 2,067 public playgrounds as of 2019 — a “meager” amount for its large population, according to a report from the city comptroller — and inspectors found hazardous equipment at one quarter of them. In Los Angeles in 2015, only 33 percent of youths lived within walking distance of a park, according to the L.A. Neighborhood Land Trust. Lower-income neighborhoods tend to have the fewest public play spaces, despite often having a high population density.
Kids everywhere need more places to play: trails, skate parks and climbing walls, gardens and ball fields, bike paths and basketball courts. Vigorous public funding to build and keep up these areas is crucial, but other options such as shared-use agreements can make unused spaces available to the public.
A.Moving more may not prevent a child from becoming overweight, but studies show clearly that it helps both physical and mental health. |
B.And although rural areas have more undeveloped outdoor space, they often lack playgrounds, tracks and exercise facilities |
C.A lack of safe places for them to play outside the home also contributes to kids obesity. |
D.It also suggested prescribing weight-loss drugs to children 12 and older and surgery to teens 13 and older. |
E.Increased screen time and changing norms around letting kids play outdoors are unsupervised. |
F.They have significant side effects for both kids and adults. |
6 . Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.
Perhaps even more incredible is that it’s smack bang in the middle of Kentucky.
Mammoth Cave National Park preserves this unique and historical natural wonder. As large as the limestone cave system is, park officials, estimate there
The incredible rock formations have resulted in the park
The caves were created naturally by the process of limestone erosion, which is known as “karst topography”. Rain and rivers slowly dissolve and shape soft limestone, which creates the vast underground network. The system is still being shaped and carved today. Not only are they a stunning destination to visit, but the system also provides drinking water for roughly 40% of the US population — and they’re
The caves act as a time capsule that preserve over 5,000 years of human history — and the caves’ first explorers were Native Americans, who
Mammoth Cave was established as a national park thanks to strong local support. Back in the 1920s, Secretary of the Interior Hubert Work created the Southern Appalachian National Park Commission in 1925 to survey
Pioneering African Americans were some of the first cave guides, and are responsible for some of the more recently discovered passageways. Stephen Bishop, who was a slave, worked in the cave from 1838 to 1856 and ventured beyond the tour routes that
The park now receives around 2 million visitors a year, with roughly a quarter taking a tour of the caves – everything from a cultural tour to the more adventurous scrambling tours on offer. The cave supports more than 130 wildlife species, such as the eyeless cavefish,
Mammoth Cave National Park is also much more than just a cave; its surrounding forest contains one of the
A.The U.S. is not one of the happiest countries in the world. |
B.The U. S experienced a decline in happiness only from 2005 to 2007. |
C.The U. S. is not included in the top 10 happiest countries. |
D.The U. S. is among the 47 countries experiencing a decline in happiness. |
A.Greece. | B.Burundi. | C.Denmark. | D.Australia. |
A.Quality education. | B.Safety from crime. |
C.Good health. | D.Wealth. |
10 . People are looking for ways to reduce their carbon footprint. Purchasing property that is environmentally responsible is a good investment for those who are
If everything goes according to plan, Dockside Green will be a
Energy efficiency is one of the
Planners of eco-communities such as Dockside Green must take the
Dockside residents will be encouraged to take advantage of a mini transport system and buy into the community’s car share program. Finally, plans are underway for a high-tech heating system that will use
Dockside residents will
A.ashamed of | B.concerned about | C.connected with | D.proud of |
A.scene | B.memory | C.focus | D.diet |
A.harmonious | B.digital | C.crowded | D.self-sufficient |
A.put aside | B.belong to | C.consist of | D.make up |
A.natural | B.mixed | C.historic | D.fancy |
A.animals | B.pesticides | C.consumers | D.conferences |
A.top | B.embarrassing | C.global | D.questionable |
A.convenience | B.advantage | C.protection | D.impact |
A.for fear that | B.so that | C.because | D.although |
A.However | B.In particular | C.Therefore | D.In addition |
A.image | B.future | C.label | D.decoration |
A.emissions | B.accidents | C.unemployment | D.crime |
A.traditional | B.man-made | C.renewable | D.enough |
A.result from | B.refer to | C.contribute to | D.benefit from |
A.desirable | B.reliable | C.recyclable | D.imaginary |