1 . Researcher Ruijia Hu said wildlife habitat in crowded places like south went Ohio is becoming increasingly fragmented (分散) as forests give way to new construction. Eventually, this could make trouble to an animal with specific habitat needs like Ohio’s pileated (红冠) woodpecker.
Pileated woodpeckers have the nickname carpenter birds for their never-ending natural woodworking. They peck out holes in trees for their nests every year, creating lots of valuable homes for animals like fox squirrels and owls. “They make new nests every year. They won’t reuse old ones,” Hu said. “Other animals depend on them.”
Pileated woodpeckers are private birds that are more often heard than seen. Studying them can be especially difficult. So Hu turned to citizen science for help. To identify where woodpeckers have been seen, she used eight years of sightings collected by birders and logged into the website eBird, a free online tool and app that anyone can use to record their observations and locations. She overlaid these sightings with remote sensing data and found that corridors along rivers and creeks with abundant mature trees and deadwood helped the birds adjust to their increasingly fragmented urban landscape.
“With fragmented forests, many habitats that were once suitable for wildlife are broken up,” Hu sa id. “Wildlife is unable to find habitat big enough to meet their survival needs. And even if there are suitable habitats, the distance between them can be too great. Wildlife corridors link up these habitat patches. Since wildlife can travel and migrate from one patch to another, the probability of finding food and shelter is higher.”
“There are so many species in urban areas that we don’t pay attention to, especially when they’re not considered vulnerable,” Hu said. “With development chipping away at more forest in this crowded county, the tipping point (临界点) could come quickly and unexpectedly. You can’t fix it overnight. It’s not just about planting more trees. The birds need mature forest, so it could take 30 to 50 years to replace their habitat. At least we can protect these riverside forest corridors and see that existing trees reach maturity.”
1. What can we infer from the second paragraph?| A．The magpie’s nest is occupied by the dove. |
| B．Birds abandon the old for the new easily. |
| C．Friendship really exists among animals. |
| D．One’s trash is another treasure. |
| A．The effect of Hu’s study on birds. |
| B．The process of Hu’s research. |
| C．The difficulty Hu had in his study. |
| D．The application of technology. |
| A．Helping them survive in the fragmented landscape. |
| B．Making them adjust to deadwood quickly. |
| C．Providing them with enough food for survival. |
| D．Ensuring them a stable and safe habitat. |
| A．One tree doesn’t make a forest. |
| B．Be wise after the event. |
| C．Prepare for a rainy day. |
| D．Take things as they come. |
2 . The second Sunday in May is a volunteer day in my neighborhood. Last year, my neighbors and I decided to
The day before we went to the hospital, many of us were feeling quite
We arrived early at the hospital and were greeted
It was then time to start making cards—we brought crayons, glue and shiny things to
We left the hospital when it was dark. Although we were tired, we were happy to see
| A．exchange | B．volunteer | C．recover | D．live |
| A．cakes | B．cards | C．toys | D．soccers |
| A．annoyed | B．tired | C．relaxed | D．nervous |
| A．children | B．neighbors | C．friends | D．athletes |
| A．warned | B．forced | C．forbade | D．asked |
| A．quietly | B．warmly | C．equally | D．secretly |
| A．worrying | B．disappointing | C．confusing | D．encouraging |
| A．try | B．experiment | C．job | D．goal |
| A．law | B．promise | C．ice | D．record |
| A．excite | B．educate | C．touch | D．frighten |
| A．luck | B．dream | C．stress | D．joy |
| A．limited | B．traditional | C．positive | D．confident |
| A．younger | B．better | C．worse | D．cooler |
| A．believed | B．found | C．doubted | D．forgot |
| A．smiles | B．tears | C．pain | D．anxiety |
3 . Do you want to see majestic lions roaring, rare rhinos running and colorful birds flying? You’ll find this incredible display of nature in the Kenya Lake System in the Great Rift Valley.
First stop
Fly into Nairobi, the capital of Kenya. This great city is known for its fashion markets and beautiful art. And be sure to pick up some rich Kenyan coffee while you’re there! Then head for the countryside.
Plan your trip
The largest of the three lakes in the system, Lake Nakuru, is less than 175 kilometers from Nairobi. But Lakes Bogoria and Elementaita are equally worth a visit. You can stay at one of several choices of luxurious cabins in the valley. And if you sign up for a trip, be sure to put flamingos, the white and pink birds, at the top of your list.
Paradise
The Kenya Lake System is shallow and alkaline (碱性的). That means it supports vegetation such as green algae, a food source for many waterfowl. Hundreds of species of birds flourish here, using this area as a major breeding and nesting ground. Water buffalo, leopards, monkeys and the endangered Rothschild giraffe also make this area their home.
Other sights
Wildlife isn’t the only natural wonder in the Great Rift Valley. The valley marks a place where the earth is divided far below the surface. This rock separation below ground leads to noticeable features above ground. Walking around Lake Bogoria especially, you will see steam rising from hot springs.
Other activities include golfing, horseback riding and hiking. The fun doesn’t stop when the sun goes down, either. The river valley is far from city lights, so many visitors gaze at the stars shining above.
If you are ready for a wildlife experience, don’t hesitate!
1. Where can you buy fashionable gifts in Kenya?| A．Nairobi. | B．Lake Nakuru. | C．Lake Bogoria. | D．Lake Elementaita. |
| A．Living in a cabin. | B．Seeing flamingos. |
| C．Visiting hot springs. | D．Gazing at shining stars. |
| A．It has countless lakes worth visiting. | B．It’s an ideal place for wildlife to live. |
| C．Its water is unsuitable for plant growth. | D．It’s famous for rich culture and history. |
NASA will crash a spacecraft into an asteroid (小行星) to try to change its orbit, attempting to prevent humans going the same way as the dinosaurs.
Earth is constantly being disturbed by small pieces of debris (碎片), but they usually burn up or break up long before they hit the ground. Once in a while, however, something large enough to do significant damage makes impact. About 66 million years ago, one such crash is thought to have wiped out the dinosaurs. Someday, something similar could end human beings-unless we can find a way to tackle it.
NASA’s Double Asteroid Redirection Test (Dart) mission is the first attempt to test if such asteroid redirection is a realistic strategy: investigating whether a spacecraft can autonomously reach a target asteroid and intentionally crash into it, as well as measuring the amount of redirection. “If it works, it would be a big deal, because it would prove that we have the technical capability of protecting ourselves,” said Jay Tate, the director of the National Near Earth Object Information Center.
The 610kg Dart spacecraft is scheduled to be launched at the target—the Didymos system-a harmless pair of asteroids consisting of a 163-metre “moonlet” asteroid called Dimorphos that orbits a larger 780-metre asteroid called Didymos (Greek for “twin”). The plan is to crash the spacecraft into Dimorphos when the asteroid system is at its closest to Earth-about 6.8 million miles away.
About 10 days before the impact, a miniaturized satellite called LiciaCube will separate from the main spacecraft, enabling images of the impact to be relayed back to Earth. Combined with observations from ground-based telescopes, and an onboard camera that will record the final moments before the crash, these recordings will enable scientists to calculate the degree to which the impact has changed Dimorphos’s orbit. The expectation is that it will change the speed of the smaller asteroid by approximately 1% and reduce its orbit around the larger asteroid.
Then, in November 2024, the European Space Agency’s Hera spacecraft will visit the Didymos system and conduct a further close-up analysis of the consequences of this snooker (斯诺克) game, recording details such as the precise makeup and internal structure of Dimorphos, and the size and shape of the hole left by Dart. Such details are vital for transforming asteroid redirection into a repeatable technique.
Even then, it is impossible that any single redirection strategy would be enough. “The problem is that no two asteroids or comets are alike, and how you redirect one depends on a huge number of variables. There is no silver bullet in this game. What you need is a whole folder of different redirection methods for different types of targets,” said Tate.
So, while this may be one small step towards planetary protection, many more are likely to be necessary to avoid destruction.
1. What is the purpose of Paragraph 2?| A．To examine the impact of dinosaurs’ extinction. |
| B．To explain the necessity of NASA’s Dart mission. |
| C．To show the damage caused by small pieces of debris. |
| D．To highlight the crisis threatening human beings at present. |
A． | B． |
C． | D． |
| A．Sending impact data back to Earth. |
| B．Calculating the length of Dimorphos’s orbit. |
| C．Helping the satellite separate from the spacecraft. |
| D．Recording the scientists’ ground-based observations. |
| A．There is no challenge too big to overcome. |
| B．There is no possibility to satisfy NASA’s needs. |
| C．There is no single solution to the complex problem. |
| D．There is no strategy to help make an obvious decision. |
5 . My wife, Hannah, and I don’t usually keep houseplants. Anything in pots gets either overwatered or underwatered, but after my diagnosis (诊断) with brain cancer, I loved the idea of having something green around.
A friend gave me what he said was a lucky bamboo plant in a deep-green bowl. We placed the plant in the living room and I told Hannah I wanted to care for it myself. When it didn’t immediately turn yellow or lose leaves, I was pleasantly surprised. Tending to the plant gave me a sense of accomplishment when I sometimes felt useless. As a family physician, I was used to offering care, not receiving it.
Since my diagnosis, I had to rely on help from other people. Watering the plant, small act as it was, connected me to a core part of my old identity.
After I recovered from the operation and returned to work, I continued to care for the plant. Soon, it had nearly doubled in height. Both the tree and I were thriving (茁壮成长). Then, without any reason, it began to show signs of stress. Its leaves kept browning and dropping to the floor. Hannah reminded me that we’d seen houseplants die before, but I couldn’t shake the feeling that the plant had become a symbol of my health. I grew increasingly depressed and fearful.
Looking back, I realized I had wrongly connected my caring of the plant—something I could manage—with my own survival—something I couldn’t. Knowing I couldn’t control my fate (命运), my anxiety actually lessened. I began to search online to figure out how to care for my plant. Following the instructions, I transplanted the tree to a larger pot, giving it room to grow. When it was back in the sunny window, we both began to thrive again. Whenever I look at the plant in its new pot, I make a point to think of those who have cared for and supported me.
1. Why was the author surprised about the plant’s good condition?| A．Because of his recent diagnosis. | B．Because of his worsening health. |
| C．Because of his previous failures. | D．Because of his unusual good luck. |
| A．The author considered himself useless. | B．The author felt connected to the plant. |
| C．The author desired to provide care. | D．The author hoped to return to work. |
| A．Because the plant’s poor health might indicate his death. |
| B．Because the stress of work would harm his well-being. |
| C．Because he may have to rely on others from then on. |
| D．Because he would experience a rather risky operation. |
| A．By searching plant knowledge online. | B．By thinking of those who supported him. |
| C．By knowing he will survive in the end. | D．By accepting his unavoidable limitation. |
6 . Lithium (锂) is called “white gold” for good reason. The metal’s value has been growing sharply over the last several years, in a large part because it is an essential part of batteries as well as several key sustainable technologies where energy storage is of huge significance. As electric cars, wind and solar power have grown into major players in the energy industry, lithium has become key to engineering a future free of fossil (化石) fuels.
But acquiring lithium comes at an enormous cost. It often works like this: Water containing lithium is delivered to the surface from underground and mixed with fresh water. The mixture then sits in pools to get rid of water, leaving the rest of its contents behind as brightly colored “mud”. Then heat and chemical reactions are used to get lithium from that, changing it into powder which is then packaged and shipped to buyers around the world.
Any accident that releases mine contents into surrounding communities or the groundwater supply could have unimaginable long-term impacts. To be specific, indigenous (土著的) communities often bear the damage, and political leaders have typically given little weight to their concerns. In Arizona, for example, an expanding lithium mine is threatening the Hualapai Tribe’s cultural and historic sites. Recently, mining lithium and other precious metals has brought about conflict: How do you ensure the availability of materials essential to the future of renewables while protecting those communities’ rights?
Mining of the metal is expected to increase dramatically in coming years. Over time, experts say, that will reduce greenhouse gas emissions (排放) by making electric cars more affordable and, therefore, more popular. As environmentally conscious consumers buy electric cars in ever-greater numbers, it’s important to be aware of the dirty process that powers those clean air vehicles.
1. What does the author’s intention of writing Paragraph 1?| A．To introduce the background of an event. | B．To explain a complex industrial theory. |
| C．To describe a noticeable recent tendency. | D．To predict the future of a main technology. |
| A．Unexpected material leak. | B．Violent chemical reactions. |
| C．Wrong political decisions. | D．Lithium mine expansion. |
| A．Intolerant. | B．Uncaring. | C．Favorable. | D．Objective. |
| A．High Expense of Lithium Mining | B．Potential Benefit of Using Lithium |
| C．Hidden Threat behind Clean Energy | D．Bright Future of Renewable Resources |
7 . Your house may have an effect on your figure. Experts say the way you design your home could play a role in whether you pack on the pounds or keep them off. You can make your environment work for you instead of against you. Here are some ways to turn your home into part of your diet plan.
Open the curtains and turn up the lights. Dark environments are more likely to encourage overeating, for people are often less selfconscious (难为情) when they’re in poorly lit places—and so more likely to eat lots of food. If your home doesn’t have enough window light, get more lamps and flood the place with brightness.
Mind the colors. Research suggests warm colors fuel our appetites. In one study, people who ate meals in a blue room consumed 33 percent less than those in a yellow or red room. Warm colors like yellow make food appear more appetizing, while cold colors make us feel less hungry. So when it’s time to repaint, go blue.
Don’t forget the clock—or the radio. People who eat slowly tend to consume about 70 fewer calories (卡路里) per meal than those who rush through their meals. Begin keeping track of the time, and try to make dinner last at least 30 minutes. And while you’re at it, actually sit down to eat. If you need some help slowing down, turn on relaxing music. It makes you less likely to rush through a meal.
Downsize the dishes. Big serving bowls and plates can easily make us fat. We eat about 22 percent more when using a 12inch plate instead of a 10inch plate. When we choose a large spoon over a smaller one, total intake (摄入) jumps by 14 percent. And we’ll pour about 30 percent more liquid into a short, wide glass than a tall, skinny glass.
1. The text is especially helpful for those who care about ____________.| A．their home comforts | B．their body shape |
| C．house buying | D．healthy diets |
| A．digest food better | B．reduce food intake |
| C．burn more calories | D．regain their appetites |
| A．Eat quickly. | B．Play fast music. |
| C．Use smaller spoons. | D．Turn down the lights. |
| A．Is Your House Making You Fat? | B．Ways of Serving Dinner |
| C．Effects of SelfConsciousness | D．Is Your Home Environment Relaxing? |
8 . Let’s celebrate some festivals in summer.
The Cariwest Festival
It is one of Edmonton’s most colourful summer festivals! It’s three days of fun as Caribbean Canadians share their music, cuisine and carnival culture! Local performers bring you amazing dance, music and fun. Bring Cariwest atmosphere into your home this year with these amazing online events.
Indigenous Festival
The annual Summer Solstice Indigenous Festival (SSIF) in Edmonton has done a wonderful job to make their annual off-line festival a number of online events this year because of COVID-19. The events take place from June 1 to 21. SSIF has partnered with BMO to provide Education Days for students to learn together about indigenous history. These classes for which only a small fee will be charged include art workshops, book readings and museum tours.
Bluegrass Festival
Just 45 minutes from the heart of downtown Edmonton is the town of Stony Plain that works hard to keep ties to its agricultural background, and here you’ll see old-styled lamp posts and historical wall paintings with a long history everywhere. It’s also the site of Western Canada’s largest bluegrass festival, which has been a main attraction for more than 25 years and in July every year draws in all the big names, including Grammy winners.
Cowboy Festival
You like poetry, music, art and cowboys? Then you can’t miss it. Heading into its 24th year, Cowboy Festival in Stony Plain in August is a showcase of the cowboy life. The events include good old-fashioned BBQ meals and some other entertainment.
1. What is true about SSIF?| A．It takes place in two cities. | B．It focuses on students. |
| C．It is annually held online. | D．It is free of charge. |
| A．It’s a city with modern appearance. | B．It has produced many musicians. |
| C．It has deep roots in agriculture. | D．It often hosts national festivals. |
| A．Cowboy Festival. | B．Indigenous Festival. |
| C．Bluegrass Festival. | D．The Cariwest Festival. |
9 . Some folks spend decades looking for their best friends. I was
As we progressed to high school, a couple of girls
Among our many
At the beginning, we gave each other butterfly hair clips and so on. Those
Holidays with family can be
| A．cautious | B．astonished | C．lucky | D．clever |
| A．mature | B．teenage | C．fashionable | D．strange |
| A．dropped out | B．dropped in | C．showed up | D．showed off |
| A．broken | B．forced | C．separated | D．united |
| A．secret | B．long | C．natural | D．complete |
| A．hobbies | B．traditions | C．ceremonies | D．rules |
| A．caught on | B．took place | C．broke out | D．fell down |
| A．fancy | B．expensive | C．modest | D．generous |
| A．repeat | B．add | C．search | D．make |
| A．instantly | B．literally | C．eventually | D．consequently |
| A．homes | B．schools | C．shelters | D．offices |
| A．held on to | B．gave way to | C．catered to | D．adapted to |
| A．salaries | B．jobs | C．kids | D．families |
| A．rare | B．practical | C．inspiring | D．cosy |
| A．create | B．reform | C．apply | D．recognize |
10 . In our information-driven society, shaping our worldview through the media is similar to forming an opinion about someone solely based on a picture of their foot. While the media might not deliberately deceive us, it often fails to provide a comprehensive view of reality.
Consequently, the question arises: Where, then, shall we get our information from if not from the media? Who can we trust? How about experts—people who devote their working lives to understanding their chosen slice of the world? However, even experts can fall prey to the allure of oversimplification, leading to the “single perspective instinct” that hampers(阻碍)our ability to grasp the intricacies of the world.
Simple ideas can be appealing because they offer a sense of understanding and certainty. And it is easy to take off down a slippery slope, from one attention-grabbing simple idea to a feeling that this idea beautifully explains, or is the beautiful solution for, lots of other things. The world becomes simple that way.
Yet, when we embrace a singular cause or solution for all problems, we risk oversimplifying complex issues. For instance, championing the concept of equality may lead us to view all problems through the lens of inequality and see resource distribution as the sole panacea. However, such rigidity prevents us from seeing the multidimensional nature of challenges and hinders true comprehension of reality. This “single perspective instinct” ultimately clouds our judgment and restricts our capacity to tackle complex issues effectively.
It saves a lot of time to think like this. You can have opinions and answers without having to learn about a problem from scratch and you can get on with using your brain for other tasks. But it’s not so useful if you like to understand the world. Being always in favor of or always against any particular idea makes you blind to information that doesn’t fit your perspective. This is usually a bad approach if you would like to understand reality.
Instead, constantly test your favorite ideas for weaknesses. Be humble about the extent of your expertise. Be curious about new information that doesn’t fit, and information from other fields. And rather than talking only to people who agree with you, or collecting examples that fit your ideas, consult people who contradict you, disagree with you, and put forward different ideas as a great resource for understanding the world. I have been wrong about the world so many times. Sometimes, coming up against reality is what helps me see my mistakes, but often it is talking to, and trying to understand, someone with different ideas.
If this means you don’t have time to form so many opinions, so what? Wouldn’t you rather have few opinions that are right than many that are wrong?
1. What does the underlined word “allure” in Para.2 probably mean?| A．Temptation. | B．Tradition. | C．Convenience. | D．Consequence. |
| A．They meet people’s demand for high efficiency. |
| B．They generate a sense of complete understanding. |
| C．They are raised and supported by multiple experts. |
| D．They reflect the opinions of like-minded individuals. |
| A．Simplifying matters releases energy for human brains. |
| B．Constant tests on our ideas help make up for our weakness. |
| C．A well-founded opinion counts more than many shallow ones. |
| D．People who disagree with us often have comprehensive views. |
| A．Embracing Disagreement: Refusing Overcomplexity |
| B．Simplifying Information: Enhancing Comprehension |
| C．Understanding Differences: Establishing Relationships |
| D．Navigating Complexity: Challenging Oversimplification |
