1 . Each year, the discovery of new shark species underlines how little we know about ocean biodiversity. In a recent report conducted by Sibert and Rubin, they reported an unexpected finding: a large-scale extinction of sharks in the pelagic ocean, the largest ecosystem on Earth, about 19 million years ago. Their discovery suggests that some extinctions in the open sea of the past may have been mysterious.
The study of Sibert and Rubin takes advantage of a system by using tiny, hard bits of shark skin and bony fish teeth that naturally fall from their bodies to the seafloor. These extremely small fossils provide a rich record of ancient oceanic sharks and their abundance for thousands of years. By studying fossils from many regions, the diversity patterns can give major insights into evolution (进化) of the open sea that would be otherwise unknown.
Sibert and Rubin quantified(量化)a past extinction of sharks, reporting a 90% decline in number and >70% drop in diversity. They found that nearer-shore sharks appear to survive, but migratory ones go extinct. The finding of this study is that sharks had undergone a widespread extinction that reorganized their communities from 16 million to 20 million years ago.
Sibert and Rubin narrowed the disappearance of sharks to a window of time under 100,000 years around 19 million years ago, but the causes of this event remain unclear. Because this time period does not stand out as a period of major climatic change, the authors do not attribute(归因于) environmental factors as an extinction driver. As for other causes, the loss of shark diversity is directly linked to overfishing.
The loss of sharks from the oceans has profound, complex, and unavoidable ecological consequences because their presence reflects the stability of marine ecosystems. Yet, one-quarter of the global diversity of sharks is currently threatened with extinction. Despite recent improvements in conservation actions, shark communities never recovered from a mysterious extinction event 19 million years ago; the ecological fate of what remains is now in our hands.
1. What did Sibert and Rubin find?| A．The negative impact of the extinction of sharks. |
| B．The mysterious reasons behind the disappearance of sharks. |
| C．The most recent advances in the study of the largest ecosystem. |
| D．The large-scale decline in the number of sharks about 19 million years ago. |
| A．By collecting and analyzing shark fossils worldwide. |
| B．By quantifying the movement of near-shore sharks. |
| C．By using a system to study the naturally fallen bits from sharks. |
| D．By keeping track of ancient oceanic sharks and their activities. |
| A．Overfishing is partly to blame for the loss of shark diversity. |
| B．The number of sharks has recovered to its previous level. |
| C．Scientist have figured out the exact causes of sharks’ extinction. |
| D．Sharks had undergone a widespread extinction due to the climate change. |
| A．Sharks: The Stories behind Them | B．Sharks: The Marine Masters |
| C．Sharks: Killers or Misunderstood? | D．Sharks: The Mysterious Extinction |
2 . Working for a big company in London on a salary (薪水)of over £100,000, you might expect Grayden Reece-Smith to have a luxurious (奢侈)lifestyle, going on expensive holidays or driving a sports car around south London, where he lives. In fact, the 28-year-old lives a very different existence from his colleagues. He gives away everything he earns over £42,000–a figure that he thought he could comfortably live on.
Over the past five years, Reece-Smith has handed over more than £250,000 to organizations such as International Care Ministries, which helps poor families in the Philippines, and the Against Malaria Foundation. He is part of a growing number of young professionals described as “effective altruists”. Effective altruists typically donate regularly to a charity which they think will have a great impact (影响). Some change careers to make more money, which can then be given away.
Reece-Smith considered working in the charity sector after graduating from university, but thought that he could make a bigger difference by donating a large part of his salary. He had volunteered as a teacher at a school in Tanzania, but then realized that earning and giving would be more effective. “The cost of my flights there could have paid the salaries of two teachers for an entire year,” he says. Instead, he could “stay at home, living a nice life and still make a huge difference in the world”.
He is not mean with money-last year he went to Cuba on holiday, and spent several thousand pounds on a new sofa. But his lifestyle isn’t as luxurious as some of the people he works with. “I usually don’t buy supermarket-branded food products, but I don’t own a car. Other people on my salary might have a bigger house. Some of my colleagues have four-bedroom houses, but we only bought what we needed-a two-bedroom flat.£42,000 is more than enough to live on and still save,” he says.
1. How much money does Grayden spend on donation every year?| A．Less than £42,000. | B．Over £100.000. |
| C．£50,000. | D．Any income over £42,000. |
| A．Donate to impactful charities. | B．Make more money to enjoy lives. |
| C．Create a good public image. | D．Enter a teaching profession. |
| A．To access his inner life. | B．To create a stronger effect. |
| C．To give away all of his salary. | D．To be a teacher at a school. |
| A．He leads an expensive lifestyle. | B．He buys food produced by supermarkets. |
| C．He lives in a four-bedroom house. | D．He balances his life and donation. |
3 . It’s clear that following a plant-based diet is connected with a lower risk of heart disease. There are many types of plant-based diets, and they are all related to certain foods connected with heart benefits, such as whole grains, fruits, vegetables, nuts and healthy oils. The diets have been most studied for their impact on heart health. These diets are rich in vitamins and minerals that help lower blood pressure, reduce the risk of diabetes (糖尿病) and keep a healthy weight, all of which can lower your risk of heart disease.
Yet, the types of plant foods and their sources are also important. For example, white rice and white bread are plant-based foods, so you would think they’re good to eat. But they are highly processed, and so are depleted of many heart-healthy nutrients (营养) and have enough sugar, which means they can make blood sugar levels rise sharply and increase hunger, leading to overeating. Drinking 100% fruit juice is not the same as eating the whole fruit, since juices can be high in sugar.
Do you really have to cut out all meat for your heart’s health? Which animal foods could have an impact on heart health? Some research has shown that the type and amount matter most. A 2014 study showed that men aged 45 to 79 who ate 75 grams or more per day of processed red meat, like cold cuts, sausage, bacon and hot dogs, had a 28% higher risk of heart failure than those who ate less than 25 grams. However, a study in the January 2017 found that eating 85 grams of unprocessed red meat, three times per week, did not worsen blood pressure.
What is the right plant-based diet for you? “For many men, this may be a matter of bettering their current foods,” says Dr. Satija, a researcher from American College of Cardiology.
1. From the first two paragraphs, we know that plant-based diets ________.| A．benefit heart health | B．increase hunger | C．lead to overweight | D．contain enough sugar |
| A．Added to. | B．Short of. | C．Filled with. | D．Rooted in. |
| A．To prove the result believable. | B．To attract readers’ attention. |
| C．To show the process clearly. | D．To make the study popular. |
| A．Risks of animal foods. | B．Disadvantages of plant-based diets. |
| C．Changes of eating habits. | D．Effects of heart-healthy diets. |
4 . “When I was a child, I enjoyed watching Chinese dramas such as Princess Pearl and Journey to the West. Fascinated by the Chinese language and culture, I finally pursued it as my major for both my undergraduate and master’s degrees,” said Dinh Thi Thu Ha, a 32-year-old Vietnamese woman working at the waste burning power factory of China First Metallurgical(冶金)Group.
When she first applied for the job in 2019, she aimed for the translator position because the company was preparing for a Vietnam project, its first overseas waste-to-energy factory, in Hanoi, the capital of Vietnam, and it was in great need of translators. “At first, I wasn’t sure how long I could do the job since the working environment was harsh. We were surrounded by garbage, the smell was terrible and dark-colored water would flow everywhere after the rain,” Dinh recalled. But the demanding environment was not her only difficulty as Dinh soon found out that being bilingual (双语的) wasn’t enough for her to be a qualified translator. She had to be an expert in the field of garbage disposal (垃圾处理) too.
“The biggest challenge I faced was the translation of technical terms, many of which I couldn’t understand at the time,” Dinh said. “Whenever I ran into words or expressions that I wasn’t familiar with and couldn’t look up myself, I would ask my Chinese colleagues to explain them to me. They were always eager and happy to help.” In the company’s Vietnam branch, the number of Chinese staff slightly goes beyond that of Vietnamese, but Dinh said she never felt any cultural differences. “We’re not divided by our nationalities, and we’re members of the same family — China First Metallurgical Group.”
Dinh now works as a junior manager, and her job description includes translation, foreign affairs contactor, and marketing. As a local resident of Hanoi, Dinh is very proud to have contributed to this project. “I hope to improve my information research and negotiation skills in the future and to further explore and develop the Vietnamese market with my colleagues.”
1. What can be learned about Dinh from the first paragraph?| A．She enjoys writing dramas. |
| B．She has a talent for language. |
| C．She is fond of Chinese culture. |
| D．She looks forward to working in China. |
| A．Harmonious. | B．Attractive. | C．Frightening. | D．Tough. |
| A．Dealing with garbage. |
| B．Translating technical terms. |
| C．Understanding cultural differences. |
| D．Adapting to the demanding environment. |
| A．Skill is no burden. | B．Still waters run deep. |
| C．Well begun is half done. | D．Rome was not built in a day. |
THE AMAZING ANIMALS OF AUSTRALIA
Our topic today is “Creatures Unique to Australia”, with questions answered by wildlife expert, Dr Jim Smith.
Australia has lots of unique animals, but which animal is a symbol of the country?
It has to be the kangaroo, as it has a wide distribution throughout the country. It’s a tough animal that has to survive in a difficult environment. Also, it cannot walk backwards, so it is always moving forwards. This expresses the strength and resolve of the Australians as individuals and as a nation. Baby kangaroos weigh only two grammes at birth. They then find their way into their mother’s pouch—a kind of pocket—to stay safe and warm. They sleep and drink milk in that temporary, protected environment until they are about seven or eight months old. After this phase, they go out to try their legs. After they learn to jump, they gradually spend less time with their mother and learn to be independent. Kangaroos may look cute, but encounters with them don’t always end so well. Kangaroos can hit and kick very hard, so please folks, if you see some kangaroos, remember they’re not for petting!
Koalas are cute, and we see so many pictures of people holding them. But in many places in Australia, it is against the law to even touch them. Can you clarify that?
They are really quite cute, but the truth is, koalas are very sensitive creatures who can easily panic because of even small changes in their environment. They spend quite a lot of time eating, sleeping, and hanging onto tree trunks, so interaction with humans can cause them a lot of stress.
Because of this, the government began to make laws against touching koalas, in the interest of animal protection, as well as public safety. So, if you see one in the wild, you shouldn’t approach it to pick it up or even touch it. If you want to hold a koala, you have to go to certain licensed zoos where animal experts make sure that the koalas selected for each session are in a good state for human contact and that they are handled for only a limited time and on a limited frequency of occasions.
So, we’ve talked about some cute animals. What about animals which aren’t so cute?
My favourite is a little creature called the Tasmanian devil. If you are out camping in Tasmania and come across one, the experience might scare you! Tasmanian devils hunt at night, so you won’t usually see them, but you may hear their loud cries when they are fighting or eating. The noise they make could wake the dead. Frightening! They are about the size of small dogs and look like rather large black rats. They also have a terrible smell! Their diet is mostly dead animals. Fortunately, despite their name, they are generally not violent towards people.
Australia also has some animals that many people have never heard of, for example, the duckbilled platypus. Is that some kind of bird?
Not at all. While it may lay eggs in a nest like a bird, it’s really a primitive mammal, with a unique biology. Its eggs hatch after about ten days, and then the baby platypus nurses from its mother like all other mammals. Its nose looks like a duck’s bill, and it has feet like a duck’s so it can dive under the water, but it’s covered in hair. Do you know what’s really strange about a platypus? The platypus doesn’t use its senses of sight or smell to find food. It has a capacity to find food in the water by using electrical sensors in its bill. There are only a small handful of animals in the world that can do that!
1. What can we infer from the last two sentences of the first part?| A．Kangaroos can be dangerous sometimes. | B．It is hard to take kangaroos as family pets. |
| C．Meeting kangaroos is always a lucky thing. | D．It is always good to pet a cute kangaroo. |
| A．After they were born for ten days. | B．Until they can dive under the water. |
| C．Since they were born immediately. | D．When they are about seven or eight months old. |
| A．It may disturb their daily activities. | B．It can change their living habits. |
| C．It will bring pressure to their life. | D．It may attack people by surprise. |
| A．They are aggressive against humans. | B．They frighten their prey to death. |
| C．They belong to a rat family. | D．They make loud and frightening noise. |
6 . With such a wide range of platforms and devices available to the everyday reader, the physical book, while not yet extinct, may end up going that way. Why?
With a rapid increase in digital reading platforms, reading is no longer a common problem for bookworms.
Readers can also carry around their favourite books within an e-reader. Common examples include the Amazon Kindle, Onyx Boox, and PocketBook. These hand-held devices offer fantastic portability, readability and variety.
Social media has had a great effect on our reading habits. It governs our daily life. With physical books no longer a key form of entertainment for children, it has been replaced with digital alternatives. Social media and video games have replaced the ways in which we traditionally read and tell stories.
As is known to us all, technology has changed the ways in which we read at home as well as in the classroom.
| A．There are a number of apps out there. |
| B．Books and lessons are delivered online. |
| C．We are still reading but just in a different way. |
| D．Lots of people find it difficult to fit reading into their daily routine. |
| E．Some e-readers also allow users to access the Internet for various purposes. |
| F．There’s nothing worse than realizing you have forgotten your favourite book. |
| G．Here are some ways technology has transformed our reading habits in recent years. |
7 . For even the most city citizens, a quick escape into nature is always a welcome breath of fresh air. Try looking for an urban garden nearby — they often hide themselves just around the corner. Click here to know more of the coolest gardens in cities around the world.
Sky Garden
As London’s highest public garden, this social space offers splendid 360-degree views of the city. With a restaurant, observation decks and beautiful plant life, there is something for everyone in this city-center escape from urban life.
The BeltLine
In a massive, 22-mile loop (环线) around the city, the BeltLine connects many Atlanta neighborhoods with parks, trails, restaurants and art shows. Although it is still under construction, the sections that are open to the public act as alternative space to enjoy the outdoors.
Jardins de Rubió i Lluch
This walled, shady garden is in the courtyard of the historic Hospital de la Santa Creu. Decorated with lilac and mandarin trees — and string lights in the evenings — this small garden square is the perfect place to sip a coffee away from Barcelona’s crowded atmosphere.
Dumbarton Oaks
The garden at this historic estate in Georgetown was listed as one of the 10 best gardens in the world by National Geographic in 2014. It has both a formal, carefully manicured (修剪整齐的) garden as well as a naturalistic garden — allowing visitors the ability to choose what they want to see.
1. Where is the passage taken from?| A．A magazine. | B．A website. | C．A newspaper. | D．A book. |
| A．Sky Garden. | B．The BeltLine. |
| C．Jardins de Rubió i Lluch. | D．Dumbarton Oaks. |
| A．They are all mixtures of entertainment and art. |
| B．They are all mixtures of urban and rural gardens. |
| C．They are all good places for people to get close to nature. |
| D．They are all quiet places for people to enjoy a relaxed dinner. |
8 . Parrots are prey animals, which means that other predators (捕食者) in the wild, such as hawks or snakes, are looking to make them into a meal. This one factor influences parrots’ behavior in your house more than any other.
Parrots are most easily hurt when feeding on the ground. Membership in a group plays an important function in ensuring their safety and improving their chances of survival from attacks by predators. The most common predators of parrots include hawks, snakes, cats, monkeys, and bats. Some predators make attacks only during the day while others hunt in the night.
As prey animals, parrots are constantly watching out for danger and they instinctively (本能地) react to risks. Their first choice is to take flight. However, if this is not possible, they will fight with their powerful beaks to defend themselves.
Because their biggest enemy is the hawk, parrots are especially reactive to quick movements from above and behind. For this reason, it is wise to avoid quick, sudden movements near your bird. This is a built-in reaction not subject to logic or reason. Simple and relatively harmless household objects can draw extreme fear responses from a bird. For example, a balloon may represent a hawk or a vacuum hose (吸尘器软管) may be the same as a snake in your bird’s mind.
As prey animals, parrots are often frightened by exposure to new household items or strangers. It is important to expose your bird to safe experiences and changes starting at a very young age to build flexibility and improve their adaptability. Variety in diet and toys, travel, and exposure to new people and places all help to make your bird more flexible and adaptable to change.
1. What is important for parrots to better survive from attacks in the wild?| A．Living in a group. | B．Growing beautiful feathers. |
| C．Feeding on the ground. | D．Avoiding coming out at night. |
| A．To attack back. | B．To get away. |
| C．To protect the young. | D．To play dead. |
| A．It may explode suddenly. | B．It may be in a strange shape. |
| C．It may have a strong color. | D．It may move around quickly. |
| A．To explain wild parrots’ behavior. | B．To give advice on raising a parrot. |
| C．To call for action to protect animals. | D．To introduce a study on bird ecology. |
9 . An Austrian company Tec-Innovation recently showed smart shoes that use ultrasonic sensors (超声波传感器) to help people suffering from vision impairment to discover obstacles(障碍) up to four meters away.
Known as InnoMake, the smart shoe aims to replace the decades-old walking stick that millions of people around the world depend on to get around as safely as possible. The currently available model relies on sensors to detect obstacles and warns the wearer through shaking and a loud alert sounded on a bluetooth-linked smartphone. That sounds impressive enough, but the company is already working on a much more advanced version that incorporates cameras and artificial intelligence to not only detect obstacles but also their nature.
“Not only is the warning that I am facing an obstacle relevant, but also the information about what kind of obstacle I am facing. Because it makes a big difference whether it’s a wall, a car or a staircase.” Markus Raffer, one of the founders of Tec-Innovation, told TechXplore.
”Ultrasonic sensors on the toe of the shoe detect obstacles up to four meters away. The wearer is then warned by vibration and/or acoustic signals. This works very well and is already a great help to me personally.” Raffer, himself visually impaired, added.
The current version of the InnoMake shoe is already available for purchase on the Tec-Innovation website, for €3,200 per pair.
The advanced system is integrated in the front of the shoes, in a waterproof and dustproof case. It is powered by a heavy-duty battery that can last for up to one week, depending on use. The battery can be charged in just three hours, using a USB cable.
The next step for Tec-Innovation is to use the data collected by its system to create a kind of street view navigation map for visually impaired people.
“As it currently stands, only the wearer benefits in each case from the data the shoe collects as he or she walks. It would be much more sustainable if this data could also be made available to other people as a navigation aid,” computer scientist Friedrich Fraundorfer explained.
1. Who are interested in the smart shoes?| A．The deaf people. | B．The injured people. |
| C．The blind or sight-impaired. | D．The sick people. |
| A．Combined. | B．Separated. | C．Benefited. | D．Allowed. |
| A．Why the smart shoes are developed. | B．What the smart shoes can do. |
| C．How the smart shoes work. | D．How the data are collected. |
| A．A science report. | B．A fashion magazine. |
| C．An educational column. | D．A news report. |
10 . Toy kitchen is hugely popular with young children. It can be a great base for creative and imaginative role playing for children and their parents.
Solo (独自的) freestyle play is what a child plays on their own with the toy kitchen. It is a source of amusement for parents to see their children imitate (模仿) many of their sayings and phrases during this sort of play. You may discover some phrases you didn’t know you had! Children will often cook and create food for their toys to eat. Joining in freestyle play while allowing the child to take charge is fun for the child as well as adults. There are many ways to turn this type of play into something more educational. Parents can demand a certain number of vegetables on their plate and the child can use their knowledge of what’s a fruit and what’s a vegetable, as well as their counting skills to carry out this simple task.
You can also play the sorting game. Asking a child to sort out the fruit and vegetables into different piles is fun and will get easier for the child each time. Always reward children with praise when they do well, and encouragement when they don’t do quite well.
Counting is an obvious game. You can start the basics of maths in the kitchen play with adding, subtracting (减) and even dividing! Your child can use the toy food to work out sums and enjoy counting! They will be picking up good basic number skills during this type of play.
You can also bring up healthy eating subjects asking them which fruit is their favorite and asking which ones they want to try for their next snack. This type of game can continue in the supermarket and be used as a method of introducing new foods to their diet.
1. Games using a toy kitchen can develop children’s ________.| A．health and habit | B．creation and imagination |
| C．counting skills and honesty | D．number skills and good manners |
| A．it difficult for children to sort out the fruit and vegetables |
| B．it fun for children to cook and create food for themselves to eat |
| C．some words and expressions you forgot using before |
| D．children pick up good basic number skills by using the real food |
| A．enriching healthy eating | B．training working ability |
| C．counting | D．sorting |
| A．Parents. | B．Teachers. | C．Children. | D．Experts. |
