1 . Beavers (河狸) are famous for building impressive dams in streams. They have a rare ability to transform the landscapes they live in. This is primarily because beavers need to use their dams to hide from predators (捕食者) like bears, wolves, and river otters. Beavers live in dome-shaped constructions within the ponds that can only be accessed by underwater entrances. Inside, they are safe from threats. Besides, they can also store food inside and keep warm in winter.
Beavers build dams up to 5 meters high, and the largest one, in Alberta, Canada, is 850 meters long. Most dams are built from pieces of wood, with stones at the base and a sealing layer of mud and plants on the upstream side. The dams are thicker at the bottom with a shallow slope on the upstream side, meaning that the weight of the water pushes down on the dam, keeping it in place and allowing it to hold back large volumes of water. Their engineering work is so effective that beaver dams can last for decades.
Beaver dams can promote the creation and development of stable wetland ecosystems, one of the most productive ecosystems in the world, which serve as the home of rare and endangered species. In addition, the dams can help water flow to the newly created ponds, thus, preventing flooding in areas downstream of the rivers where these dams are built. They also protect the land from soil erosion (侵蚀, 腐蚀) and block pollutants in the water flow downstream into major water bodies.
However, Ph. D. student Robert Needham, from the International Centre for Ecohydraulics Research at Southampton, expressed a great deal of his concern about the possibility of beaver dams blocking the upstream and downstream migration (迁移) of Atlantic salmon (鲑鱼) and trout during their reproduction seasons, as well as affecting habitat (栖息地) quality. Thus, people should control the construction of beaver dams, especially in human-inhabited areas, near agricultural fields and pasture lands.
1. What is the main reason for beavers to build dams?| A．Keeping warm in winter. |
| B．Storing food for later use. |
| C．Protecting themselves from predators. |
| D．Saving their habitats from river flooding. |
| A．The living environment of beavers. |
| B．The features of beaver dams. |
| C．The methods of building beaver dams. |
| D．The introduction to the largest beaver dam. |
| A．River pollution poses a big danger to beavers. |
| B．Beaver dams have great ecological(生态的)significance. |
| C．Stable wetland ecosystems are important to dam construction. |
| D．Beaver dams serve as the place of reproduction for some species. |
| A．People may be disturbed by too many beaver dams. |
| B．Beaver dams make many sea animals leave their habitats. |
| C．Farmers could benefit a lot from beavers engineering work. |
| D．Beaver dams promote an increase of some species in the Atlantic |
2 . U.N. Report Warns Nature Crisis
A new U.N. report focuses on the negative effects of human activity on nature. It says one million plant and animal species on land, in the seas and in the sky are now in danger of extinction.
The 1,800-page report took three years to finish.
The problem can be fixed, the report says.
Professor Eduardo Brondizio of Indiana University is an author of the report. He says, “We all know what needs to be done. The knowledge is there.
| A．However, this requires many changes. |
| B．Over 120 wildlife species are facing extinction. |
| C．Only experts know how to address the problem. |
| D．The report listed several causes for the situation. |
| E．There just needs to be a greater will to take action. |
| F．It draws on the work of 450 scientists from dozens of countries. |
| G．Between 1980 and 2000, one million square kilometers of tropical (热带的) forest were lost. |
There are nearly 40 plots of funnel-centered (漏斗状的) farmland in Nahui Village,
Local people grow crops all around the funnel in the center. During rainy seasons, flood water quickly flows into the funnel,
The funnel in the fields near Xianahui Village is known as the “Earth eye”. According to local people’s belief, mother Earth watches over her children with her
Alexis Vaughan, 17, sat quietly in the passenger seat of her dad's car. She stared out the window at the Preston, Idaho, cornfields.
Alexis, a high school student, let her eyes lazily scan the landscape for wildlife. Still, she was terrified when a deer came into view about 200 yards in front of them, just a few feet off the road. "Dad, there's a deer, there!" Alexis said, rolling down the window for a better look. It was a three-point buck (雄鹿) — a male deer with sharp, three-pronged antlers (角) on each side of its head.
As the car moved closer, Alexis saw that the buck's head was bent toward the ground. Then she heard a scream. A few seconds later, she saw an arm fly up near the buck's head. Alexis realized the buck was attacking a woman. Sue Panter, a 44-year-old mother, had been out for her morning run. The buck had come out from the tall corn and began following her. Having lived in rural Idaho for years, Sue knew that most bucks got frightened by humans. But this buck edged closer, even when she threw at it with a handful of gravels (石子).
Sue went to pick up a log to use for self-defense, and the buck attacked her. It lifted her with its antlers (角) and threw her into the air. Sue could feel the horns punctured (刺穿) her leg and blood flowed down her leg. Within seconds, the buck had pushed her off the road and into the cornfield.
When Alexis and her father pulled up, the buck was rolling Sue like a rag doll. Alexis looked into the woman's terrified eyes, and before her father had even stopped the car, the 104 pound teenager jumped quickly out of the car and down the slope toward the buck. She was kicking and hitting it to get its attention. Then Michael, her father, who had followed his daughter, wrestled the buck away from the women by holding the antlers.
注意：
1）所续写短文的词数应为150左右；
2） 续写部分分为两段，每段的开头语已为你写好；
Paragraph 1:
Alexis helped Sue up the slope.
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Paragraph 2:
Then she heard her father yell.
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Every year, at the end of October, tens of thousands of people flock to a Buddhist temple in China to see a huge gingko biloba tree (银杏树) drop its foliage (枝叶) and turn
Due to the increasing
A research team led by Guo Songtao, professor at the Northwest University in China, is developing a system with facial recognition and other technologies
“In the past few years, machine learning
With the facial recognition technology
7 . Birds rely on their keen sense of hearing to detect prey(猎物) and identify other birds on the basis of their songs. In fact, birds have better hearing than humans, so they hear with much more detail. So how do birds hear?
Birds and humans both have an inner ear and a middle ear. However, birds differ from humans in that they lack an external ear structure. Where humans have an outer ear organ, birds have a funnel-shaped(漏斗状的) opening that functions as their outer ear, located on each side of their head. These openings are usually positioned behind and slightly below a bird’s eyes and are protected by soft feathers.
The position of a bird’s head also plays a role in its hearing abilities. Scientists have determined that noises register(显示) at different frequencies on each side of the bird’s head. Depending on the angle from which the noise originates, it registers with a certain frequency in the left eardrum(耳膜) but with a different frequency in the right eardrum. This allows the bird to locate a sound’s origin.
Let’s take a look at owls. They are known for their extremely accurate hearing, which helps them locate prey at night. This hearing ability is partly due to the unbalanced arrangement of the ear openings, with one opening being lower than the other. Sounds register in these openings at slightly different times. Owls can use this time difference, which is only 30 millionths of a second, to determine whether the sounds are coming from their left or their right. Other birds of prey have small covers in front of their ears that help them determine whether sounds are coming from above them or below them. Some owls do appear to have ears on the top of their head, but those are actually feathers controlled by small muscles under the skin that do not affect their hearing at all.
1. According to paragraph 2, what is the major difference between birds’ ears and humans’ cars?| A．Size | B．Position. | C．Structure. | D．Function. |
| A．Each side of the bird’s head. |
| B．Sound quality around the bird. |
| C．The angle from which the noise comes. |
| D．The difference in frequencies between the eardrums. |
| A．To give examples. | B．To present the main idea. |
| C．To draw a conclusion. | D．To compare different opinions. |
| A．Different Senses of Birds | B．Amazing Abilities of Birds |
| C．The Secret of Birds’ Hearing | D．The Origin of Birds’ Hearing |
8 . Every day as the sun rises, Ma Hongyi, a 66-year-old farmer, can be seen patrolling (巡逻) Yuncheng Salt Lake with his dog in Yuncheng city, North China’s Shanxi province.
Ma still remembers the day when he first saw two big pink birds wandering through the water. “I had never seen such pretty birds. They were even taller than me, with long wings,” Ma recalls. He was later informed that birds were flamingos, a rare sight in China, which were listed on the International Union for Protection of Nature’s red list of endangered species in 2013. From that day on, Ma started his second career as a volunteer to prevent human beings from interfering with the wildlife. “The birds are attracted by the good environment,” Ma says. “I will do my best to protect the lake so that birds can come here every year.”
Yuncheng Salt Lake covers an area of 132 square kilometers and used to serve as a salt production base. As the country began attaching greater importance to environmental protection, an ecological (生态的) protection and development center was set up in 2012 to carry out regular ecological protection and restoration (修复) of the lake. “The greatest value of the Salt Lake lies in its ecology, which should be properly restored and protected,” says Chu Xianghao, mayor of the city. The lake area hosts 292 types of wild animals, along with 782 plant varieties, some of which are newly recorded species in the country.
After patrolling the lake as volunteer for over four years, Ma was employed by the local government to help with wildlife protection in 2019. “The lake’s ecology is getting better,” Ma says, adding that he looks forward to the arrival of the flamingos every year. “Some of them are my old friends,” he says.
1. Why does Ma patrol Yuncheng Salt Lake every day?| A．To serve as a keeper of the lake. | B．To observe the rare flamingos closely. |
| C．To admire the scenery around the lake. | D．To come across the flamingos again |
| A．bringing benefits to | B．losing control of |
| C．sharing space with | D．causing problems to |
| A．It is still used as a salt production base | B．The restoration of it will be carried out soon. |
| C．It’s home to 292 types of endangered wildlife | D．The protection of its ecology is of great importance |
| A．Ambitious. | B．Responsible. | C．Generous. | D．Humorous. |
9 . “You should get a cat,” my doctor said. “A cat?” I couldn’t even look after myself. I took a deep breath and carefully considered the idea of welcoming a feline (猫科的) friend into my life.
Adopting an animal during the height of the pandemic was far from easy. When my partner and I found Cinnamon, her adoption profile made her out as the perfect kitten. We filled out the paperwork and had a few weeks to prepare for her arrival.
When she came home, it became increasingly obvious that Cinnamon didn’t understand “no”, “stop it” or “don’t do that”. She was the worst cat I’ve ever owned. I was beginning to doubt my doctor’s advice.
We decided to start taking her for walks. I could barely leave the house before, but my heart couldn’t say no to Cinnamon. Cinnamon showed me what bravery looked like if there was a dog at a park, she would run toward it. She jumped without knowing where she would land. She loved adventure. I found myself mirroring her behavior after a while, jumping out of bed without a second thought. I began to find the motivation to get out of bed in the morning.
Cinnamon unfortunately passed away after a medical accident, leaving a cat-sized hole in my heart the day she left us at only six months old. I’m no stranger to sadness or grief, but losing my pet so suddenly was the most confusing emotional experience I’ve ever had. She was supposed to help me through more of my life than the three short months we had her.
Our time is often cut unpredictably, unmistakably short. It would be a shame to live life being anything less than brave and adventurous.
1. Why did the doctor advise the author to get a cat?| A．To teach her to interact with animals. |
| B．To assist her to fill up her spare time. |
| C．To help her out of her mental disease. |
| D．To ensure her safety in time of pandemic. |
| A．Stupid but lovely. | B．Outgoing and aggressive. |
| C．Stubborn but courageous. | D．Naughty and adventurous. |
| A．Why Cinnamon loved going outside. |
| B．How Cinnamon affected the author positively. |
| C．Why the author decided to take Cinnamon outside. |
| D．How Cinnamon interacted with the author outdoors. |
| A．The loss of a pet is painful. | B．The short life is unpredictable. |
| C．Friendship with pets is helpful. | D．The courage to take risks is beneficial. |
10 . When Simon Cane was in the second grade, he began learning about all the ways humans have an impact on the environment and really took those classroom lessons to heart in a way that set him apart from his schoolmates at his elementary school, P. S. 81, in the Bronx. “He told me we drove too much and made too much pollution,” his dad, Jonathan Cane, told Runner’s World. So Simon convinced his parents to start hanging their clothes to dry, taking the stairs instead of elevators, and other “green” measures.
“For much of kindergarten and first grade I rode my bike to Simon’s school with him on the back,” Jonathan said. “We had a lot of fun being outdoors. We’d stop to give our dog treats and generally enjoyed it.” As Simon got bigger, though, it wasn’t practical for him to ride on his father’s back, but it also didn’t make sense to ride together — both because of safety concerns and because there was no place to put away Simon’s bike. So, most of the time they drove the 1. 5 miles to school.
But in 2019, when Simon was going into third grade, the 8-year-old came up with a new way to help the planet: running the 1. 5 miles to P. S. 81. And Jonathan promised his son he’d join him for as long as he wanted.
“We did a test run one day in August, and decided to give it a go. To be honest, I thought he’d blink (眨眼)after it got really cold or rainy, but he never did,” Jonathan said. He recalled one day when the weather was particularly bad. “It’s really raining out there today,” he told Simon. “And Simon said, ‘Well then we’re going to get wet!’ He took pride in toughing it out, and it became a really fun family routine.”
Since the start, Simon has run with his dad and their black dog, Lola, and has even inspired his mom, Nicole Sin Quee, to join in. They soon became known as “the family that runs to school”.
1. What makes Simon different from his classmates?| A．Washing his clothes by himself. | B．Taking many classes after school. |
| C．Raising strange questions in class. | D．Taking green measures to protect the environment. |
| A．By car. | B．By cycling. | C．By running. | D．By school bus. |
| A．Simon has trouble with his eyesight. | B．Simon is really stubborn and inflexible. |
| C．Simon is much tougher than expected. | D．Simon didn’t get support from his father. |
| A．The Best Way to Go to School |
| B．Father and Son Run for the Environment |
| C．A Teenager Keeps Running to Inspire Father |
| D．Three Inspiring Running Athletes to Protect the Environment |
