1 . Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
Professor Simard form University of British Columbia explains how trees are much more complex than most of us ever imagined. Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. As far as Simard is concerned, actually the opposite is true: trees survive through their co-operation, passing around necessary nutrition “depending on who needs it”.
Nitrogen (氮) and carbon are shared through miles of underground fungi (真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons (神经元) in our brains, and when one tree is destroyed, it affects all.
Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how moribund trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.
“We didn’t take any notice of it” Simard says sadly. “Trees move nutrition into the young trees before they die, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
1. Which statement would Simard agree with?| A．Trees support each other. |
| B．Trees compete for nutrition. |
| C．Trees depend on their needs. |
| D．Trees co-operate with the fittest. |
| A．To explain the importance of fungi networks. |
| B．To introduce the function of neurons networks. |
| C．To illustrate how Nitrogen and carbon are shared. |
| D．To show how the forest ecological system works. |
| A．Energetic. | B．Ancient. | C．Previous | D．Dying |
| A．Protect tree societies. |
| B．Cut down oldest trees. |
| C．Get nutrition from nature. |
| D．Improve our environment. |
2 . If you visit Uluwatu temple in Bali, be cautious. The long-tailed temple monkeys there are well-known thieves. Since a long time ago, they have made a living by robbing visitors of their possessions and then holding those objects until a ransom in the form of food is paid. But Jean-Baptiste Leca of the University of Lethbridge, in Canada, wondered whether these monkeys are cleverer still. Sometimes, they do not accept the first offer and hold out for more. He therefore asked himself whether they are able to assess how valuable an object is to its owner, and factor that into their negotiations.
Dr. Leca and his colleagues conducted their experiment by wandering around the temple with video cameras, recording the activities of the monkeys. Every time they saw a monkey show interest in a particular tourist? they recorded the interaction. To work out what was going on, they had first to establish the relative values of food rewards to monkeys, and of stealable objects to people.
To confirm which stealable objects are most valued by people, they divided them into six classes: empty containers, such as phone cases and plastic bottles; accessories (搭配物) such as hairpins and key rings; hats and shoes; spectacles and sunglasses; and electronics and wallets. They then observed how often victims bothered to bargain with the thief for the return of property belonging to different classes, and thus classified objects into low value, medium value and high value.
They found that monkeys do, indeed, have a complicated sense of what they are doing — at least, adults and sub-adults do. These animals have a preference for stealing high-value items, and will often hold out either for more rewards, or for better ones, if they are in possession of such items. But this is something that they have to learn how to do as they grow up. Young monkeys make no such distinctions, and sub-adults are less good at doing so than adults.
1. What is the purpose of Leca's research?| A．To prove monkeys are cleverer than men. |
| B．To find out what is valuable for monkeys. |
| C．To record the negotiations between monkeys. |
| D．To make sure monkeys can judge item values. |
| A．Bilk. | B．Reward. | C．Tax. | D．Rent. |
| A．By the material of objects. | B．By the preference of victims. |
| C．By the buying price of objects, | D．By the frequency of bargaining. |
| A．Young monkeys can evaluate items. | B．All monkeys prefer high-value items, |
| C．Monkeys have a simple sense of acts. | D．Monkeys' stealing is an acquired skill. |
3 . This is the moment a cleaner at a British university burst into tears after students raised $ 2,063 to send him to Jamaica on vacation to see family.
Herman Gordon, who has worked at Bristol University for more than a decade, is described as “one of the most loved” members of its cleaning staff. He is so well liked that a group of students raised money to give him a holiday. A video shows a student hands an envelope of cash to the surprised Gordan with tears rolling down his cheeks. He wipes away tears with a cleaning cloth and hugs the student who gave it to him. Gordan said: “I want to thank every one of you and God bless every one of you.”
The group of students started the fundraising because they liked Gordon so much. A post said: “The Jamaican cleaner in the biomedical library is the jolliest man I have ever met; he makes me smile even when I’m in the deepest depths of sorrow, if you want a reason to smile, go talk to him for a minute or two.”
Anyone who has been to the biomedical library knows who Herman the cleaner is. Simply put, Herman is the epitome（典范）of happiness, “All year round, this man works hours on end to provide us with a clean working space in which to study. But most importantly, his everlasting positive attitude has managed to turn many students’ dark days into positive ones filled with joy,” said a student. Whether you’re just feeling generally down or stressed out due to exams, Herman is always there to encourage you.
This legend proves that happiness is not about what you own, what job you have or how much money you’ve got, but about appreciating what you currently have in life even if it’s small.
1. What was Herman Gordon’ reaction when receiving the fundraising?| A．grateful. | B．stressed. | C．delighted. | D．astonished. |
| A．most miserable. | B．most cheerful. | C．most generous. | D．most glorious. |
| A．Building confidence. | B．Developing exam skills. |
| C．Learning self-control. | D．Gaining biomedical knowledge. |
| A．A biomedical library cleaner. . | B．A group of warm-hearted students. |
| C．Money-raising to send a cleaner on vacation. | D．The most loved cleaning staff. |
4 . As heat waves continue to ravage the planet, air conditioners are becoming more and more common. However, these "active" cooling devices are posing problems because the electricity consumption which most people are concerned about and the release of ozone-damaging chemicals worsen the greenhouse gas effect, resulting in the creation of heat islands and further thermal pollution. Therefore, "passive" cooling, which doesn't have such effects, has attracted considerable attention from both scientists and ordinary people in recent years.
In a recent study, a team of researchers from China and US presented an eco-friendly, low-cost smart coating to keep buildings cooler while consuming zero electricity. Infrared radiation-based passive cooling has been investigated since 2014, but challenges, mainly the expensive and unsustainable design, have greatly limited their large-scale and widespread application. Besides, the imbalance in cooling ability of these coatings during the day and night tends to lead to great day-night temperature differences as more heat is lost than gained at night.
The solution therefore requires a "smart" mechanism that can both enhance daytime cooling and minimize nighttime heat loss. To do this, the researchers created a new smart coating comprised of conventional building materials, including titanium dioxide nanoparticles, fluorescent microparticles, and glass microspheres that were engineered to reflect most of the sunlight. Specifically, the titanium dioxide particles effectively reflect sunlight through light scattering（撒播）while the fluorescent particles increase the amount of reflection by changing the absorbed sunlight into fluorescence emissions, which drive more heat away from the building. Meanwhile, the glass microspheres re-send mid-infrared broadband radiation, allowing not only heat loss, but allowing heat exchange to take place between the building and the sky.
The coating was tested on a model concrete building. Through this efficient heat exchange with the sky, daytime cooling was strengthened while nighttime cooling was reduced. The building's inside temperature was always maintained at around 26℃, even when the out-side temperature varied from 24℃ to 37℃ during the day. We believe this new coating will make it to commercialization soon, enabling a sustainable, passive cooling technology that could help to fight climate change and the global energy crisis.
1. What is the virtue of passive cooling?| A．It is simple to design. | B．It uses no chemicals. |
| C．It is smart. | D．It uses no power. |
| A．It was hard to design. |
| B．Its material was hard to produce. |
| C．Its heat loss and cooling are imbalanced. |
| D．It wasn't tested on a model concrete building. |
| A．Metal. | B．System. | C．Platform. | D．Building. |
| A．The principle of air-conditioning. |
| B．The differences between active and passive cooling. |
| C．A new coating to keep buildings cool without electricity. |
| D．A new building to maintain its inside temperature without electricity. |
5 . We recognize our friends’ faces. And we’re not alone. Many social animals can identify individuals of their own species by features of their faces. That's important, because they need to be able to change their behavior depending on who they meet. And a recent research has shown that some species of monkeys, birds, and domesticated (家养的) animals can even tell different faces apart by looking at photographs alone.
Ethologist Léa Lansade of the French National Research Institute for Agriculture, Food and Environment did an experiment to find out how well horses can recognize individual people in photographs.
She and her team first taught the horses how to “choose” between two side-by-side pictures by touching their noses to a computer screen. The horses were then shown photos of their present keeper alongside faces of unfamiliar humans. They had never seen photos of any of the people before. The horses correctly identified their current keeper and ignored (忽视) the stranger’s face about 75%of the time. In fact, even though the horses didn't get it right every single time, they were at least as correct in picking out their earlier keeper as they were at identifying their present one.
The results suggest that not only can horses differentiate between familiar and unfamiliar human faces, they also naturally understand that photographs are two dimensional representations (二维呈现) of real life, without any other intimations such as smell or sound. And they’re even better at this than our oldest animal parter, the domestic dog.
In addition, horses seem to have a strong long-term memory for human faces, like their long lifespan and history of domestication. In future experiments, the researchers would like to test whether looking at photos of people that they have had bad experiences with in the past might cause horses to act anxious or even avoidance. So maybe think twice before doing anything that might give a horse a long face.
1. Why did researchers show the horses both the keeper’s photos and the strangers’?| A．To find out what horses would do in the experiment. |
| B．To see why horses could recognize the keeper in the pictures. |
| C．To test whether horses could recognize the strangers in pictures. |
| D．To study to what degree horses can make out different people in pictures. |
| A．Clues. | B．Differences. |
| C．Photographs. | D．Senses. |
| A．Whether horses can live longer than other animals. |
| B．Whether horses can remember human's faces for a long time. |
| C．Whether horses can show their emotions at the sight of photos. |
| D．Whether horses are better at recognizing photos than other animals. |
| A．To talk about animals’ species. |
| B．To explain animals’ facial features. |
| C．To show animals’ behaviour for adaptation. |
| D．To introduce animals’ ability to identifying faces. |
6 . Recently I read Nineteen Eighty-Four, a novel by George Orwell set in a state where even the language they use is controlled. Adjectives are forbidden and instead they use phrases such as ‘ungood’, ‘plus good’ and ‘double plus good’ to express emotions. As I first read this I thought how impossible it would be in our society to have such vocabulary. However, the more I thought about it, the more I realised in its own way it’s already happening. I type messages to my friends and alongside each is the emoji. I often use them to emphasise something, or to not seem too serious, or because this specific GIF conveys my emotions much better than I ever could using just words. And I wonder, with our excessive use of emojis, are we losing the beauty and diversity of our vocabulary?
English has the largest vocabulary in the world, with over one million words, but who’s to say what it’ll be like in the future? Perhaps we will have a shorter language, full of saying ‘cry face’ if something sad happens or using abbreviations (缩写) like LOL (laugh out loud) or BRB (be right back) instead of saying the full phrase. So does this mean our vocabulary will shrink? Is it the start of an exciting new era? Will they look back on us in the future and say this is where it all began – the new language? Or is this a classic case of the older generations saying, ‘Things weren’t like that when I was younger. We didn’t use emoticons to show our emotions’?
Yet when you look back over time, the power of image has always been there. Even in the prehistoric era they used imagery to communicate, and what’s even more incredible is that we are able to analyse those drawings and understand the meaning of them thousands of years later. Pictures have the ability to transcend time and language. Images, be it cave paintings or emojis, allow us to convey a message that’s not restrictive but rather universal.
1. Why does the author mention Nineteen Eight Four?| A．To introduce the topic. |
| B．To show an example. |
| C．To give the reason. |
| D．To describe a phenomenon. |
| A．To reduce the use of words |
| B．To save time of typing |
| C．To express naturally and casually |
| D．To make fun of friends |
| A．Disappear. | B．Reduce. |
| C．Lower. | D．Change. |
| A．Emojis will destroy the variety of our vocabulary. |
| B．Emojis will replace English as the most popular language. |
| C．Emojis are useless and meaningless in modern life. |
| D．Emojis will not restrict our communication. |
7 . As new technology is introduced, there are many who worry about its influence on our current and future lifestyles－particularly when it comes to jobs. It is a current belief that with the rise of automation and artificial intelligence (AI), many people’s jobs, and therefore their livelihoods, are likely to be lost.
Automation in the workplace is nothing new. Machines have been performing dull tasks on our behalf for years, allowing us to escape many repetitive jobs. A recent report from the McKinsey Global Institute states that nearly two thirds of all jobs could have at least 30% of their activities automated by 2030. However, McKinsey also believes that this new technology will also ‘create new occupations that do not exist today, much as technologies in the past have done.’ As the horse gave way to the car, hostlers (马夫) became mechanics and mechanised fields drove up wages and created more long-term roles than it destroyed.
“It’s an evolution of work,” says Ian Barkin, a robotic process automation specialist. As low-skilled jobs are taken on by AI, people will need to learn new skills. “This calls on us to focus on up-skilling. Technology can lead to job reductions but it doesn’t have to,” says Barkin.
Whether or not robots and AI will leave us all jobless remains to be seen. Current views on the subject are mixed. Increased automation could indeed lead to a loss of some jobs, but at the same time is likely to create many more as new skills are required. Will they balance out?
1. How do many people feel about the influence of AI?| A．Quite delighted. | B．Quite surprised. |
| C．A sense of fear. | D．A sense of pride. |
| A．Doubtful. | B．Negative. |
| C．Critical. | D．Approving. |
| A．Taking risks. | B．Improving ourselves. |
| C．Adapting to the world. | D．Thinking positively. |
| A．Every coin has two sides. |
| B．Where there is life, there is hope. |
| C．It’s better to do well than to say well. |
| D．A bad workman quarrels with his tools. |
8 . Most of us marry creativity to our concept of self either we're "creative" or we aren't, without much of a middle ground. "I'm just not a creative person!" a frustrated student might say in art class, while another might blame her talent at painting for her difficulties in math, giving a comment such as, "I'm very right-brained."
Dr. Pillay, a tech entrepreneur and an assistant professor at Harvard University, has been challenging these ideas. He believes that the key to unlocking your creative potential is to ignore the traditional advice that urges you to "believe in yourself." In fact, you should do the opposite: Believe you are someone else.
Dr. Pillay points to a 2016 study demonstrating the impact of stereotypes on one's behavior; The authors. educational psychologists Denis Dumas and Kevin Dunbar, divided their college student subjects into three groups, instructing the members of one to think of themselves as "romantic poets" and the members of another to imagine they were "serious librarians" (the third group was the control). The researchers then presented all the participants with ten ordinary objects, including a fork, a carrot, and a pair of pants, and asked them to come up with as many different uses as possible for each one. Those who were asked to imagine themselves as romantic poets came up with the widest range of ideas, whereas those in the serious-librarian group had the fewest. Meanwhile, the researchers found only small differences in students' creativity levels across academic majors.
These results suggest that creativity is not a fixed individual characteristic but a "malleable product of context and perspective, as long as he or she feels like a creative person. Dr. Pillay argues that, besides identifying yourself as creative, taking the bold, creative step of imagining you are somebody else is even more powerful. So, wish you were more creative? Just pretend!
1. According to the passage， who is more likely to unlock his creative potential?| A．An art major who always believes in himself. |
| B．A math major who has excellent academic performance |
| C．A physics major who likes to imagine himself as a poet. |
| D．A history major who works as a librarian on weekends. |
| A．The creativity of the college students. |
| B．The stereotypes of the college students. |
| C．The impact of stereotypes on one's behavior |
| D．The influence of creativity on one's behavior. |
| A．stable | B．sustainable | C．predicable | D．changeable |
| A．there is no doubt that we are either creative or not |
| B．a student who doesn't do well in art class is not creative |
| C．right brain determines whether a person is creative or not |
| D．if we pretend to be creative， then we might be really creative |
9 . People who drink a lot of sugary drinks have a high risk of developing cancer, researchers announced last week. However, the evidence cannot yet confirm a direct connection between the two. The researchers said the findings of a large study in France suggest that limiting the amount of sugar-sweetened drinks may help reduce the number of cancer cases. Drinking sugary drinks has become more common worldwide in the last several decades. Sugar drinks are linked to obesity-the condition of being extremely overweight-which increases a person’s cancer risk.
The study was published in The BMJ British medical journal. It looked at data from just over 100,000 French adults-21 percent of them men and 79 percent women. The researchers noted how many sugary drinks each of them had, and followed them for up to nine years-between 2009 and 2018. The researchers appraised their risk for all types of cancer, and some individual ones such as breast, colon and prostate cancers.
The scientists found that a 100 milliliters increase in sugary drinks was linked to an 18 percent increased risk of overall cancer and a 22 percent increased risk of breast cancer. The researchers looked at those who drank fruity juices and those who drank other sweet drinks. Both groups, they found, showed a higher risk of cancer overall.
For prostate and colorectal cancers, no link was found. The researchers said this might have been because there was only a limited number of cases of these cancers in the study group.
Experts not directly involved in the work said it was a well-run study, but noted that its results could not establish cause and effect. Amelia Lake is an expert in public health nutrition at Britain’s Teesside University. She said that while this study does not provide a definite cause and effect between sugar and cancer, it does add to the importance of efforts to reduce sugar intake. “The message from the totality of evidence on excess sugar tonsureption and various health outcomes is clear,” she said.
1. What did the study find?| A．Sugary drinks directly lead to cancer. |
| B．Heavy sugary drinks might be linked with cancer. |
| C．Obesity mainly results from sugary drinks. |
| D．Cancer is not necessarily caused by obesity. |
| A．Controlled | B．Evaluated. |
| C．Determined. | D．Documented. |
| A．By making comparison. |
| B．By giving different opinions. |
| C．By using actual figures. |
| D．By following the order of time. |
| A．More evidence needs to be found in the future. |
| B．The researchers should follow more people. |
| C．Reducing sugar consumption needs great efforts. |
| D．Cutting down the amount of sugar is important. |
10 . To advance wind turbine (汽轮机，涡轮机)technology to meet the requirements of extremely rough environments like that on Mars, Ames partnered with NSF (the National Science Foundation) and the Department of Energy. " It was clear that a lot of the same features were also found in the cold regions of the Earth,“ says Bubenheim. "NASA took the leadership on the team because we had the longest-term technology—a Mars turbine.”
Years before, NSF had worked with a company called Northern Power Systems ( NPS) , based in Barre, Vermont, to build a 3-kilowatt wind turbine on Black Island off the coast of Antarctica. The main purpose of this turbine was to power communications to the NSF's South Pole station. In 1993 , Ames awarded the same company a Small Business Innovation Research ( SBIR) contract (合 同)to construct a similar wind turbine at the South Pole.
Jonathan Lynch, the chief technology officer at NPS, says the South Pole has less wind than Black Island but is even colder. " It's hard to have steels that work in those temperatures,“ he says. " The cold affects the parts and everything gets extremely fragile. We looked at which materials were appropriate for flexible wires, irons, and steels, and what lubrication (润 滑) systems were going to work and for what temperatures over a long period of time.”
In 1997, NPS made a 3-kilowatt turbine at the South Pole, and then began developing a 100-kilowatt turbine that could function in the same extreme conditions. The first types of the larger turbine were successfully deployed in Kotzebue, Alaska and Golden, Colorado. " They were fully tested in loads to make sure they worked, and we then built a lot of them, " says Lynch.
By 2000, the wind turbine technology had won an R&D 100 Award from R&D Magazine , and since then, says Bubenheim, "It's been copied and put in a lot of places around the globe. "
1. From the first paragraph, we can infer that_____.| A．the team wanted to build a wind turbine used on Mars |
| B．Mars and the Earth have the same features |
| C．NASA played the most important part in the team |
| D．the team was made up of Ames, NSF, the Department of Energy and NASA |
| A．The wind turbine technology was invented by Ames. |
| B．NPS made wind turbines for NSF and Ames. |
| C．NSF and Ames both used the wind turbines at the same place. |
| D．The wind turbine technology was only used in America. |
| A．The South Pole has worse condition than the Black Island. |
| B．NPS had confidence to build a wind turbine for the South Pole. |
| C．The materials for the turbines have to stand the extreme cold. |
| D．NPS had more challenges in building a wind turbine for the South Pole. |
| A．made | B．invented | C．used | D．advanced |
