1 . When we buy something new, we get rid of what’s old. That cycle of consumption（消费）has made electronics waste the world’s fastest-growing solid-waste stream, which is expected to grow as the world upgrades to 5G. However, less than a quarter of U. S. electronic waste is recycled, the rest ending up as rubbish, posing environmental risks.
Part of the problem concerns rule. In states without laws banning (禁止) electronics from the regular trash, electronics often end up in garbage. Even when e-waste rules exist, it’s left to consumers to handle their old devices properly. But recycling them can be a pain. People have to take their electronics to a store, which may pay them for it or charge them to get rid of it. Many consumers simply throw their devices into the trash or throw them in a drawer.
One solution is to make electronics last as long as they once did. Yet, technology companies are speeding the pace of being deserted. “It’s a strategy by producers to force us into shorter upgrade cycles,” said Kyle Wiens, the founder of iFixit, which publishes do-it-yourself repair guides.
Some environmental groups say big companies like Apple and Samsung should pick up the cost of recycling the devices they sell. Lawmakers have passed Extended Producer Responsibility (EPR) laws, which require producers to establish and fund systems to recycle or collect deserted products.
Some companies are increasing their recycling efforts on their own. For example, Apple in 2018 introduced Daisy, a smartphone-recycling robot that can take apart 200 iPhones every hour. But that's a drop in the bucket compared with the 50 million tons of e-waste produced globally last year.
1. Which of the following statements is true?| A．A large number of electronics end up as waste. |
| B．E-waste problems will be solved if laws are made. |
| C．Most people prefer to sell their old electronics to stores. |
| D．E-waste is the biggest threat to environment. |
| A．are trying to collect their deserted products |
| B．have a short life cycle because of the market |
| C．intend to shorten the life cycle of products |
| D．struggle to provide goods with good quality |
| A．Positive. | B．Unconcerned. | C．Confident. | D．Doubtful. |
| A．Choice for Recycled Electronics |
| B．Solutions to the Mountain of E-waste |
| C．Bad Effects of E-waste on the Environment |
| D．Companies on Duty for Nature Protection |
2 . The brain has a powerful ability to remember and connect events separated in time. And now, in that new study in mice published in Neuron, scientists have cast light on how the brain can form lasting links.
The hippocampus (海马体)—a small, seahorse-shaped region buried deep in the brain—is an important headquarters for learning and memory. “The traditional view has been that cells in the hippocampus keep up a level of continuous activity to associate two events separated by tens of seconds.” said Dr. Ahmed, co-first author of the study. “Turning these cells off would thus disrupt learning.”
To test this view, the researchers imaged parts of the hippocampus of mice as the animals were exposed to two different stimuli(刺激物): a sound followed by a small but unpleasant puff of air. A fifteen-second delay separated the two events. The scientists repeated this experiment across several trials. Over time, the mice learned to associate the sound with the soon-to-follow puff of air. Using advanced microscopy, they recorded the activity of thousands of neurons (神经元), a type of brain cell, in the animals’ hippocampus in each trial for many days.
“We expected to see continuous neural activity that lasted during the fifteen-second gap, an indication of the hippocampus at work linking the sound and the air puff,” said Stefano Fusi, PhD. “But when we began to analyze the data, we saw no such activity.” Instead, the neural activity was sparse. Only a small number of neurons worked, and they did so seemingly at random (随意的).
For further understanding, they had to shift the way they analyzed data and use tools designed to make sense of random processes. Finally, the researchers discovered a complex pattern: a style of mental computing that seems to be a remarkably efficient way that neurons store information.
“We were happy to see that the brain doesn’t maintain ongoing activity over all these seconds because that’s not the most efficient way to store information,” said Dr. Ahmed. “The brain seems to have a more efficient way to build this bridge.”
In addition to helping to map the circuitry (神经回路) involved in associative learning, these findings also provide a starting point to more deeply explore disorders, such as panic and post-traumatic stress disorder.
1. What can we learn about the hippocampus?| A．It helps connect events separated in places. |
| B．It is involved in the visual area of the brain. |
| C．It is a kind of cell buried deep in the brain. |
| D．It is a brain region crucial for memory. |
| A．animals have trouble learning to associate two events |
| B．associations of events require continuous neural activity |
| C．a 15-second delay is enough to separate two events |
| D．disruption of learning turn the activities of cells off |
| A．continuous activity happens as expected |
| B．no neurons stay active at intervals of 15 seconds |
| C．a complex pattern helps the brain learn associations |
| D．neuronal information is stored in well-designed tools |
| A．inspire deeper explorations of disorders |
| B．build a bridge between different parts of the brain |
| C．provide evidence for brain’s ongoing activity |
| D．help map some aspects of a person’s experience |
3 . The next time a giant Big Mac or Coke flashes into your mind when you’re walking home from the pub, you may not simply have the snacks.
A British hi-tech company has created a new advertising system that uses lasers (激光) to project images up to 200 metres tall from the sides of tall buildings, enabling advertisers to reach people from virtual billboards in the sky. Passers-by will see each image for only between one tenth and quarter of a second, as their eyes catch the light from certain angles.
Advertising agencies and big businesses have already signalled their interest, but Skyline campaigners have branded the technology “greedy” and said that it could fill our skies with showy and tasteless brands.
The Echo system uses a high laser projector to bounce light off a narrow reflective strip fixed to the side of a building, visible up to 1km away. This creates large-scale images that are captured briefly in the viewer’s eye as a result of the “persistence of vision” effect: the same effect that leaves an imprint (印记) of a light source on your vision after you’ve turned away.
Daniel Siden, the technology’s inventor, explained: People often think this could be subversive, but it’s actually less invasive and more fun than traditional advertising. Mr.Siden said that the system was safe because of the distance between the projector and passers-by. And images would be above the line of sight of drivers and cyclists and below the field of vision of airline pilot. The images have been tested and shown not to cause epileptic seizures (癫痫发作).
Because it uses only one strip of reflected light, the system needs a small amount of the power, about one-twentieth of a standard 96-sheet digital outdoor display for an image of the same height.
Still, some Skyline campaigners dislike the technology and believe it delivers subliminal advertising (隐形广告). Barbara Weiss of the Skyline Campaign, said: “It’s actually offensive. London’s latest tall buildings are not particularly well-built or well designed, but unfortunately people are forced to look at them. Adding stupid advertising that’s invasive in its nature will only make it worse.”
1. Why does the writer use the example of Big Mac, Coke in paragraph 1?| A．Because he attempts to promote these products to potential consumers. |
| B．Because he wants to introduce a new advertising technology to readers. |
| C．Because he studies the association between products and images in advertising. |
| D．Because he tries to illustrate the effectiveness of flashing images of advertised goods. |
| A．Pedestrians can see the flashing images from specific angles. |
| B．It’s a new system developed by an advertising agency. |
| C．The image will no longer exist in vision after you’ve turned away. |
| D．The system consists of a laser projector, a reflective strip and a physical billboard. |
| A．subconscious | B．damaging | C．harmless | D．imaginative |
| A．Environmentalists worried about energy consumption. |
| B．Drivers, cyclists and pilots whose sight might be affected. |
| C．The Skyline Campaign regarding the technology as flashy. |
| D．The patients who suffer from epileptic seizures. |
4 . Does the amount of cash in a lost wallet influence how likely a person is to return it?Traditional economic theories suggest that the greater the attraction, the less likely we are to be honest—but a new study finds altruism ( 利 他 主 义 ), and a powerful hate for viewing oneself as a“thief”are more important than the financial attraction.
A team of researchers carried out a huge experiment concerning 355 cities in 40 countries. More than 17,000 similar wallets were dropped off at public places, each containing a grocery list, a key, and three business cards in the local language using made-up names and an email address. Some had no money while others contained the equal amount of $13.45.
According to the research, people on average returned 40% of wallets with no money in them but 51% with money. It also shows extreme differences between countries. But although rates of people’s honesty varied ( 变 化 ) greatly from country to country, one thing remained greatly similar: wallets with money, compared to no money, raised reporting rates.
In the US, the UK and Poland, they repeated the experiment with even more money:$94.15, which increased reporting rates by an average of 11% compared to the smaller amount. They also found that having a key increased reporting rates by 9.2%.
The findings, which run counter to a basic principle of classical economics, suggest honesty, altruism and self-image can sometimes be more influential than economic self-interest.
A purely economic approach to behavior suggests people would keep the wallets with the larger amounts of money due to the increased financial reward, but economics often doesn’t explain a person’s sense of honesty or self-image, according to behavioral scientists. Altruism also influenced the findings, the researchers say. Since the key is valuable to the owner but not the finder, this pointed toward an altruism concern in addition to the cost of negatively updating one’s self image.
1. The author mentions traditional economic theories in Paragraph 1 in order to .| A．introduce a topic | B．attract readers’ interest |
| C．add some background information | D．describe some traditional theories |
| A．11%. | B．20.2%. | C．51%. | D．62%. |
| A．go against. | B．make a difference. | C．agree with. | D．focus on. |
| A．Traditional economic theories have already been old-fashioned. |
| B．People are more likely to return a lost wallet with more cash. |
| C．An experiment done worldwide proves people’s altruism. |
| D．Different countries have different rates of people’s honesty. |
5 . Small talk has a reputation for being uninteresting, and for good reason. Pointing out the fact that it’s raining seems as ridiculous as pointing out the fact that you have a head—you’re fully aware of both things, and don’t require an outsider to confirm them. But despite being evident and often painfully dull, small talk has an important role to fulfil, enabling us to leap over a number of social obstacles towards improved, meaningful interaction.
Humans can be sensitive souls. We each have our boundaries and lists of potential upsets, which when broken, cause us to either gently back away to an alternative position in the room, or become cross at the person. Small talk is first a way to test the waters with an unfamiliar person, so that you may better understand their personality. When finding yourself positioned closely to a person who you know little about, it’s much safer to point out the rainy sky than to share your political views on a sensitive topic. Until you know the person better, heavier topics should probably be kept under wraps, so you won’t find yourself on the receiving end of a cold stare.
Though insignificant, small talk still has great power. When talking with fellow humans, much of our soul is exposed through non-verbal communication. A response to “how was your weekend” can unveil much about the person’s character. The length of their response might indicate their level of self-confidence; the tone of speaking might show how agreeable a person is; their slightly lowered head, as if protecting themselves from attack, a possible sign of a regrettable history of bullying.
As more of a person’s character is revealed, we have the insight needed to determine whether to broach more significant topics—the things that we actually want to talk about. Conversation is a great educator, and deep conversation establish lasting bonds with our fellow humans, forming precious friendships that paint our lives with vibrant colors. Such friendships begin with small talk.
1. What is described in the first paragraph?| A．The first stage of human interaction. |
| B．Ridiculous human behavior in communication. |
| C．Absence of communication between strangers. |
| D．The difficulty of having deep conversations. |
| A．Because they are fond of heavy subjects. |
| B．Because they are enthusiastic about politics. |
| C．Because they are too sensitive about topics. |
| D．Because they fail to manage interpersonal distance. |
| A．The length of the answer. | B．The quality of the voice. |
| C．The position of the head. | D．The distance between speakers. |
| A．Reputation of Small Talk | B．Ways of Understanding Personality |
| C．Significance of Small Talk | D．Challenges of Deep Conversation |
6 . Some students get so nervous before a test. They do poorly even if they know the material. Sian Beilock, a professor at the University of Chicago in Illinois, has studied these highly anxious test-takers. The students start worrying about the results. And when we worry, it actually uses up attention and memory resources（资源）.
Professor Beilock and another researcher, Gerardo Ramirez, have developed a possible solution. Just before an exam, highly anxious test-takers spend ten minutes writing about their worries about the test.
The researchers tested the idea on a group of twenty anxious college students. They gave them two short maths tests. After the first one, they asked the students to either sit quietly or write about their feelings about the upcoming second test.
Professor Beilock says those who sat quietly scored（得分） an average of 12% worse on the second test. But the students who had written about their fears improved（提高） their performance by an average of 5%. Next, the researchers used younger students in a biology class. They told them before final exams either to write about their feelings or to think about things unrelated（不相关的） to the test. Professor Beilock says highly anxious students who did the writing got an average grade of B+, compared to a B-for those who did not.
"What we showed is that for students who are highly test-anxious, and who'd done our writing intervention（干预）, all of a sudden there was no relationship between test anxiety and grades. They were performing just as well as their classmates who don't normally get nervous in these tests."
But what if students do not have a chance to write about their fears immediately before an exam? Professor Beilock says students can try it themselves at home or in the library and still improve their performance.
1. What do the students start worrying about before an exam?| A．Whether they can pass the exams. |
| B．What other students do during the test. |
| C．Whether they have remembered the materials. |
| D．What kind of problems they will meet on the test paper. |
| A．Making the students focused on the test. |
| B．Asking the students to sit quietly before the test. |
| C．Having the students write about their worries about the test. |
| D．Asking the students to direct the attention away from the test. |
| A．became less nervous before the test |
| B．were better at controlling their feelings |
| C．did worse than those who wrote about their feelings |
| D．did better than those who wrote about their feelings |
| A．writing about our worries before an exam can work a bit |
| B．we can only write about our worries right before an exam |
| C．the best place to write about our worries is in the test room |
| D．it doesn't matter where we write about our worries before an exam |
Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne, Switzerland, demonstrated (展示) a small robotic wheelchair directed by a person's thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.
“Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles.” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.
1. BCI is a technology that can ________.
| A．help to update computer systems |
| B．link the human brain with computers |
| C．help the disabled to recover |
| D．control a person's thoughts |
| A．By controlling his muscles. |
| B．By talking to the machine. |
| C．By moving his hand. |
| D．By using his mind. |
| A．scalp→computer→cap→wheelchair |
| B．computer→cap→scalp→wheelchair |
| C．scalp→cap→computer→wheelchair |
| D．cap→computer→scalp→wheelchair |
| A．make profits from them |
| B．prove the technology useful to them |
| C．make them live longer |
| D．learn about their physical condition |
| A．Switzerland, the BCI Research Center |
| B．New Findings About How the Human Brain Works |
| C．BCI Could Mean More Freedom for the Disabled |
| D．Robotic Vehicles Could Help to Cure Brain Injuries |
8 . By the end of the century, if not sooner, the world’s oceans will be bluer and greener thanks to a warming climate, according to a new study.
At the heart of the phenomenon lie tiny marine microorganisms (海洋微生物) called phytoplankton. Because of the way light reflects off the organisms, these phytoplankton create colourful patterns at the ocean surface. Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton. Climate change will fuel the growth of phytoplankton in some areas, while reducing it in other spots, leading to changes in the ocean’s appearance.
Phytoplankton live at the ocean surface, where they pull carbon dioxide (二氧化碳) into the ocean while giving off oxygen. When these organisms die, they bury carbon in the deep ocean, an important process that helps to regulate the global climate. But phytoplankton are vulnerable to the ocean’s warming trend. Warming changes key characteristics of the ocean and can affect phytoplankton growth, since they need not only sunlight and carbon dioxide to grow, but also nutrients.
Stephanie Dutkiewicz, a scientist in MIT’s Center for Global Change Science, built a climate model thatprojectschanges to the oceans throughout the century. In a world that warms up by 39C, it found that multiple changes to the colour of the oceans would occur. The model projects that currently blue areas with little phytoplankton could become even bluer. But in some waters, such as those of the Arctic, a warming will make conditions riper for phytoplankton, and these areas will turn greener.” Not only are the quantities of phytoplankton in the ocean changing,” she said, “but the type of phytoplankton is changing.”
And why does that matter? Phytoplankton are the base of the food web. If certain kinds begin to disappear from the ocean, Dutkiewicz said, “it will change the type of fish that will be able to survive.” Those kinds of changes could affect the food chain.
Whatever colour changes the ocean experiences in the coming decades will probably be too gradual and unnoticeable, but they could mean significant changes. “It’ll be a while before we can statistically show that the changes are happening because of climate change,” Dutkiewicz said, “ but the change in the colour of the ocean will be one of the early warning signals that we really have changed our planet.”
1. What directly makes the change of the ocean’s appearance?| A．The increase of phytoplankton. |
| B．The way light reflects off the organisms. |
| C．The type and concentration of phytoplankton. |
| D．The decline of phytoplankton. |
| A．Control. | B．Use. |
| C．Predict. | D．Discover. |
| A．Phytoplankton are sensitive to the ocean’s warming trend. |
| B．Phytoplankton absorb carbon dioxide at the bottom of the ocean. |
| C．Oceans with more phytoplankton may appear bluer |
| D．Data have been found to show the change in the colour of the ocean |
| A．To introduce a new method to study phytoplankton. |
| B．To explain the effect of climate change on oceans. |
| C．To analyze the consequences of ocean colour changes. |
| D．To analyze the composition of the ocean food chain. |
9 . Sweden is so good at recycling that, for several years, it has imported rubbish from other countries to keep its recycling plants going. Less than 1% of Swedish household waste was sent to landfills(垃圾填埋场) last year or any year since 2011.
We can only dream of such an effective system in the UK, which is why we end up paying expensive transport costs to send rubbish to be recycled overseas rather than paying fines to send it to landfills under The Landfill Tax of 1996.
Sweden has a culture of looking after the environment. “We Swedish people are aware of what we need to do on environmental issues. We worked on communications for long to make people not throw things outdoors so that we can recycle and reuse,” says Anna-Carin Gripwall, director of communications for Avfall Sverige, the Swedish Waste Management’s recycling association.
Over time, Sweden has carried out a national recycling policy so that even though private companies undertake most of the business of importing and burning waste, the energy goes into a national heating network to heat homes through the freezing Swedish winter.
However, some people argue that the country is escaping real recycling. Paper plant managers say wood fiber can be used up to six times before it becomes dust. If Sweden burns paper before that point, it’s exhausting the potential for true recycling and replacing used paper with fresh raw material.
Ms Gripwall describes Sweden’s policy of importing waste to recycle from other countries as a temporary situation. “There’s a ban on landfill in EU countries, so instead of paying the fine they send it to us as a service. They should and will build their own plants, to reduce their own waste, as we’re doing in Sweden,” Ms Gripwall says.
1. Why is a low amount of household waste sent to landfills in Sweden?| A．A little bit of household waste is produced here. |
| B．Its people get waste recycled at home. |
| C．Much rubbish is imported overseas. |
| D．They have good public environmental awareness. |
| A．An effective recycling system is adopted. |
| B．People are encouraged to sell rubbish abroad. |
| C．People are forbidden to send waste to landfills. |
| D．An increasing number of landfills are being built. |
| A．It’s being spread around the world. |
| B．It’s also thought to have some shortcomings. |
| C．It’s so perfect to receive good evaluation. |
| D．It solves the problems with the local energy. |
| A．It’s partly wrong to import rubbish from other countries. |
| B．The technology of handling waste will be developed wildly. |
| C．It’s possible to completely solve all environmental problems. |
| D．All countries should work together to protect the environment. |
10 . Two of the saddest words in the English language are “if only(要是……就好了)”. I live my life with the goal of never having to say those words, because they convey regret, lost opportunities, mistakes, and disappointment.
My father is famous in our family for saying “Take the extra minute to do it right.” I always try to live by the “extra minute” rule. When my children were young and likely to cause accidents, I always thought about what I could do to avoid an “if only” moment, whether it was something minor like moving a cup full of hot coffee away from the edge of a counter, or something that required a little more work such as taping padding (衬垫) onto the sharp corners of a glass coffee table.
I don’t only avoid those “if only” moments when it comes to safety. It’s equally important to avoid “if only” in our personal relationships. We all know people who lost a loved one and regretted that they had foregone an opportunity to say “I love you” or “I forgive you.” When my father announced he was going to the eye doctor across from my office on Good Friday, I told him that it was a holiday for my company and I wouldn’t be here. But then I thought about the fact that he was 84 years old and I realized that I shouldn’t give up an opportunity to see him. I called him and told him I had decided to go to work on my day off after all.
I know there will still be occasions when I have to say “if only” about something, but my life is definitely better because of my policy of doing everything possible to avoid that eventuality. And even though it takes an extra minute to do something right, or it occasionally takes an hour or two in my busy schedule to make a personal connection, I know that I’m doing the right thing. I’m buying myself peace of mind and that’s the best kind of insurance for my emotional well-being.
1. Which of the following is an example of the “extra minute” rule?| A．Start the car the moment everyone is seated. |
| B．Leave the room for a minute with the iron working. |
| C．Wait for an extra minute so that the steak tastes better. |
| D．Move an object out of the way before it trips someone. |
| A．take up | B．stay away |
| C．run out of | D．give up |
| A．keep her appointment with the eye doctor |
| B．meet her father who was already an old man |
| C．join in the holiday celebration of the company |
| D．finish her work before the deadline approached |
| A．The Peace of Mind | B．The Most Useful Rule |
| C．The Two Saddest Words | D．The Emotional Well-being |
