1 . EVEN the best of communicators can sometimes hit a wrong note, whether with a joke, turn of phrase, or even an ill-timed chuckle（轻笑）.
For instance, a former finance minister Ken Gabriel usually tries to keep things casual when answering reporters’ questions. But in a television interview on the news program 60 Minutes, some people felt his register was a little too casual—even careless.
At one point, Gabriel spoke about the bankers who have been widely blamed for causing the collapse of the financial sector: “I mean there were a whole bunch of folks who, on paper, if you looked at quarterly reports, were wildly successful, selling derivatives that turned out to be …completely worthless,” Gabriel said, with a chuckle.
Shocked by Gabriel’s laughter during the interview, journalist David finally asked: “You’re sitting here. And you’ re—you are laughing. You are laughing about some of these problems.”
Gabriel quickly explained himself by replying, “No, no. There’s gotta be a little humor to get you through the day.” But that exchange ended up making news, as TV pundits, journalists and public relations experts debated Gabriel’s tone.
One unnamed strategist for Gabriel’ s party said that the finance minister’ s attempts at humor were distracting: “Gabriel is gifted in so many ways, but humor is not something that he seems to be comfortable with. He does not come across as a funny guy.”
The TV critic Daniel, meanwhile, came to Gabriel’s defense.
“Gabriel isn’t a rookie …All this laughter seems clearly to be calculated rather than accidental. His laughs last night were designed as laughs of reassurance. They were designed to tell the TV audience he understands the severity of the situation.”
There would have been little debate if Gabriel had not laughed during a speech. Answering questions in a public setting, however, should allow for a more conversational register. But as Gabriel discovered, not everyone agrees on just how casual the tone should be.
1. What’s the meaning of the phrase hit a wrong note?| A．Say something wrong. | B．Do something wrong. |
| C．Write down something wrongly. | D．Play the music wrongly. |
| A．Tried to account for it. | B．Found an excuse for it. |
| C．Refused to say anything about it. | D．Learned a lesson from it. |
| A．The banker. | B．David. |
| C．The unnamed strategist. | D．Daniel. |
| A．Debatable speeches of Gabriel. | B．Be cautious while you are speaking. |
| C．Gabriel’s rude behavior in speeches. | D．Honest or not, it’s hard to say. |
2 . Starman, the dummy(仿真人) riding a cherry-red Tesla Roadster(特斯拉敞篷车) through space, has made his closest approach ever to Mars. The electric roadster and its passenger were attached to the top of a Falcon Heavy rocket during the SpaceX rocket’s first test launch on 6 February 2018.
Two years later, the Falcon Heavy rocket and the vehicle at its tip are making their second trip around the Sun. Mr. McDowell, a Harvard astrophysicist, found that Starman passed 7.4 million kilometers from Mars at 06:25 GMT 7 October, 2020.
The closest recent approach between the Earth and Mars was 56 million kilometers in 2003, though the planets are often hundreds of millions of miles apart depending on where they are in their orbits. No one can see the Falcon Heavy rocket at its current distance, but orbits over periods of a few years are fairly straightforward to predict, and Mr. McDowell used data about how the rocket was moving when it left the Earth’s gravity behind to locate its recent movements exactly.
Last time Starman circled the Sun, McDowell said, it crossed Mars’ orbit while the Red Planet was quite far away. But this time the crossing lined up with a fairly close approach, though still not close enough to feel a strong tug from Mars.
At this point in time, if you were able to go look at the Roadster, it would probably look pretty different. The strong solar radiation environment between the planets would probably have destroyed all the exposed organic materials.
Without the Earth’s atmospheric and magnetic(磁场的) protection, even the plastics and carbon-fibre materials would start to break up. Over the course of decades or centuries, the car will end up with its aluminium(铝) frame and hard glass parts----that’s assuming that none of them get destroyed in impacts with passing space rocks.
1. What can we infer from the first two paragraphs?| A．Starman is now circling around the Earth in its orbit. |
| B．Starman has set out on its second trip around the Sun. |
| C．Starman has traveled 7.4 million kilometers after launch. |
| D．Starman still has a long way to go before getting to Mars. |
| A．By keeping Starman under visual observation. |
| B．By predicting its future orbit around the earth. |
| C．By seeking professional help from SpaceX. |
| D．By analyzing data about the rocket’s movement. |
| A．pull | B．drive | C．resistance | D．pressure |
| A．It is circling around Mars and will finally crash onto it. |
| B．It will finish its mission and return to SpaceX on earth. |
| C．Starman is likely reduced to at most its frame and glass. |
| D．SpaceX will try to recover it during its next space mission. |
3 . When you’re on a fishing boat, you may see flocks of birds following in your track, hoping to catch a snack. Now scientists say they can use those birds’ behavior to track illegal fishing boats.
Here’s how it works: Researchers attached data recorders to the backs of 169 albatrosses (信天翁) in the Southern and Indian oceans. The devices weighed only an ounce and a half, but they included a GPS and were able to detect the presence and intensity of radar signals coming from boats. That information was then transmitted by satellite, so the researchers could track the location of the birds-and thus the radar-emitting boats-in real time.
The scientists then cross-checked that data against the known locations of boats, gathered from a system that boats use to declare themselves, called the Automatic Identification System (AIS). And differences appeared frequently.
More than a third of the times the birds’ recorders detected radar signals, and therefore a boat, no such boat appeared in the official log (航海记录)—meaning that the vehicles had likely switched off their Automatic Identification Systems—something the researchers say probably happens in illegal fishing operations.
The work suggests birds could be an effective boat-monitoring tool—as long as illegal fishing operations don’t target the birds. Fortunately, such a task would be difficult.
“Around fishing vessels, you can get hundreds of birds at any one time that are all flying around. So it’s not really possible to target a specific bird. And the birds with recorders on are not marked in any way. So it’s difficult for fishermen to pick out a specific bird," said study author Samantha Patrick, a marine biologist at the University of Liverpool.
Patrick’s bigger concern is that albatrosses often get hooked on fishing lines. And though regulations have been established to protect against that happening—with success—illegal boats don’t necessarily obey. So scientists might be underestimating the risk posed to albatross populations. But this system could mean that those illegal boats may have a tougher time flying under the radar.
1. What behavior of albatrosses can be used to track illegal fishing boats according to scientists?| A．Seeking snacks on a boat. |
| B．Following a boat to catch food. |
| C．Monitoring the location of the boats. |
| D．Keeping an eye open for illegal activities. |
| A．To carry a GPS. |
| B．To record the birds’ behavior. |
| C．To help satellite transmit information. |
| D．To detect radar signals from boats. |
| A．They are probably fishing illegally. |
| B．They needn’t declare themselves. |
| C．They don’t want to emit radar signals. |
| D．They want to avoid being followed by albatrosses. |
| A．Birds—Humans’ Friends |
| B．Data Recorders—A Helper to Albatrosses |
| C．AIS—A System to Declare Locations of Boats |
| D．Albatrosses—A Tool to Monitor Illegal Fishing Boats |
4 . After about two weeks of intense negotiations in Paris, delegates from around the world reached an international agreement on Dec. 12 to address climate change. For the first time in history, 195 countries have promised to reduce greenhouse gas（GHG）emissions and to increase these reductions over time.
The agreement goes beyond requiring developed countries like the US to take actions to cut down emissions. It's a universal agreement requiring some form of action from every country, rich or poor.
The agreement sets the date for an emissions peak "as soon as possible". It would also limit warming worldwide to less than 2℃ above the levels in the 1800s. According to scientific studies 2℃ is the point at which climate change will bring destructive consequences to the planet, including rising sea levels, severe droughts, increased flooding, destructive storms, and widespread food and water shortages.
The deal also urges wealthy countries to set a non- binding goal of providing more than $100 billion（650 billion yuan）per year in public and private financing by 2020 for poorer countries to help them invest in clean energy and combat the impact of climate change.
The Paris deal asks countries to make voluntary promises based on an analysis of each country's economy, politics and technology. However, the deal also includes a series of legally binding（有约束力的）requirements. It requires countries to reconvene every five years, starting in 2020, with updated plans that would cut their further emissions. Countries will also be legally required to reconvene every five years starting in 2023 to publicly report on their progress.
The Paris deal alone won't solve global warming. Its effectiveness will depend on whether each country enacts（立法）their promise. But the deal "could be viewed as a signal to global financial and energy markets, triggering a fundamental shift away from investment in coal, oil and gas as primary energy sources like wind, solar and nuclear power", according to The New York Times.
1. Which of the following is true according to the passage?| A．The agreement requires only developed countries to take actions to cut down emissions. |
| B．The agreement would limit warming worldwide to 2℃ less than the levels in the 1800s. |
| C．The agreement requires some form of action from all the countries in the world |
| D．The constant global warming will do great harm to the planet. |
| A．do something to fight against the influence of climate change |
| B．invest more in coal, oil and gas as primary energy sources |
| C．provide more than $100 billion per year in public and private financing |
| D．report on their progress of reducing their emissions every 5 years in Paris |
| A．Meet | B．Report. | C．Promise | D．Return. |
| A．a science magazine | B．a newspaper |
| C．a school text | D．an economic lecture |
5 . Even in the first few months of life, children begin to experiment with language. Young babies make sounds that imitate（模仿） the tones and rhythms of adult talk; they “ read” gestures and facial expressions, and they begin to associate sounds frequently heard — words — with their objects in the mind. They delight in listening to familiar rhymes, play along in games such as peek-a-boo and pat-a-cake, and play with objects such as board books and alphabet blocks in their play. From these remarkable beginnings children learn to use a variety of symbols.
In the course of gaining facility with these symbol systems, children acquire through interactions with others the insight that specific kinds of marks — print — also can represent meanings. At first children will use the physical and visual cues（提示） surrounding print to determine what something says. But as they develop an understanding of the alphabetic principle, children begin to process letters, translate them into sounds, and connect this information with a known meaning. Although it may seem as though some children acquire these understandings magically or on their own, studies suggest that they are the beneficiaries of considerable, though playful and informal, adult guidance and instruction.
Considerable diversity in children’s oral and written language experiences occurs in these years. In home and child care situations, children go through many different resources and types and degrees of support for early reading and writing. Some children may have ready access to a range of writing and reading materials, while others may not; some children will observe their parents writing and reading frequently, others only occasionally.
What this means is that no one teaching method or approach is likely to be the most effective for all children. Rather, good teachers bring into play a variety of teaching strategies that can involve the great diversity of children in schools. Excellent instruction builds on what children already know, and can do, and provides knowledge, and skills for lifelong learning. Children need to learn not only the technical skills of reading and writing but also how to use these tools to better their thinking and reasoning.
1. What can a child in the first few months do about language?| A．Speak some simple sentences. | B．Understand some body language. |
| C．Connect the words with the definitions. | D．Repeat the word they hear from adults. |
| A．Children’s ability of storing and processing letters and so on. |
| B．Children’s ability of connecting specific marks with meanings. |
| C．The course of children’s developing the physical and visual cues. |
| D．The importance of adult guidance and instruction in children’s growth. |
| A．It develops naturally in children. | B．Earlier instruction is of great help. |
| C．It varies from children to children. | D．It is hardly influenced by the surroundings. |
| A．There is no standard for good teachers. |
| B．Teaching strategies should change with children. |
| C．Children should have the ability of self teaching. |
| D．The perfect instruction is necessary for language learning. |
6 . I’ve recently found myself wondering if I could do without Google Maps. It is, I think, the only app on my phone I’d really miss were I to swap my smartphone for a “dumb” one that handles only calls and text messages.
Why am I thinking about this? It’s because every time I try to read a book, I end up picking up my phone instead. I keep interrupting my own train of thought in order to do something that I don’t consciously want to do.
This is not accidental. Developers have become even more unashamed in their attempts to keep us hooked on our smartphones. Some of them speak in the language of addiction and behavioural psychology, though most prefer the term “persuasive tech”. In itself, persuasive tech is not a new idea — an academic named BJ Fogg has been running classes from a “persuasive tech lab” at Stanford since the late 1990s. But as smartphone ownership has rocketed and social-media sites have been born, persuasive tech has vastly expanded its reach.
One company, Dopamine Labs — named for the chemical released in the reward center of the brain — offers a service to tech businesses wanting to “keep users engaged”. Founder Ramsay Brown tells me he wants people to understand that “their thoughts and feelings are on the table as things that can be controlled and designed”. He thinks there should be more conversation around the persuasive power of the technologies being used. “We believe everyone has a right to cognitive liberty, and to build the kind of mind they want to live in,” he says.
The poster child of the resistance movement against addictive apps is former Google “design ethicist” Tristan Harris. He thinks the power to change the system lies not with app developers but with the hardware providers. In 2014, Harris founded “Time Well Spent”, a group that campaigns for more moral design practices among developers.
Any tech business that relies on advertising profits is motivated to hold its users online for as long as possible, Harris says. This means apps are specifically designed to keep us in them. Apple, on the other hand, wants to sell phones but doesn’t have a profit stream so tightly connected to the amount of time its customers spend online. Harris hopes that companies like Apple could use their influence to encourage more morally designed apps.
While I wait for Apple to sort this out, I find myself longing for something called a “Light Phone”, a credit-card-sized handset that does absolutely nothing but make and receive calls. Price tag? $150. Seems expensive. But the company’s website is very persuasive.
1. According to the author, what makes us so glued to our smartphones？| A．People's inborn behaviours. | B．App developers’ intention |
| C．User-friendly apps | D．Hardware providers |
| A．Tech businesses have gone too far in controlling users’ minds |
| B．Persuasive technologies are dangerous to users’ cognitive liberty. |
| C．The persuasive power of the technologies deserves more attention |
| D．Everyone can live the life they desire by using persuasive technologies. |
| A．The advertiser | B．The advocate |
| C．The opponent | D．The founder |
| A．Do we have a right to cognitive liberty? |
| B．What have persuasive tech done to us? |
| C．Why a dumb phone is a smart move? |
| D．How smartphones shape our minds? |
7 . Bird pattern carved on Yubi in Chinese, comes alive and circles around, while an audio guide introduces the cultural relic and the bird’s connotation (寓意). Such is the experience of watching a cultural relic through a pair of augmented reality (AR) glasses at the Liangzhu Museum.
The museum displays various burial objects found in the Archaeological Ruins of Liangzhu City in Hangzhou, showcasing the civilization of prehistoric rice agriculture and a state-level society between 3,300 B.C. and 2,300 B.C. The site was included on the UNESCO World Heritage List in July 2019, providing profound and compelling evidence that Chinese civilization started 5,000 years ago.
Using AR to tell Liangzhu’s ancient story and let the young people sense and feel close to cultural relics through modern technology is an important task at the museum, making it a pioneer in using modern technology and a hot place for tourists.
“I found that most students were very curious about it, and it could inspire students to have the desire to learn more,” said Chen Xi, the AR glasses provider. “I’ve never seen this before. The illustration of the ancient wild birds above is not that clear. But with the AR glasses, I know what the ancient wild bird exactly looks like and how it is different from what we see on TV,” said Rong Mei, a visitor in her twenties. “Compared with traditional ways of appreciating a cultural relic, AR glasses guide has virtual images which help people visually understand the information behind the relic, such as in which life scenarios was the relic used, its function and its cultural connotation,” said Zhou Liming, director of the Liangzhu Museum.
From digitalization to intelligentization (智能化), the Liangzhu Museum took more than five years. It started to collect the digital information of the ruins and relics since 2015. It paves the way for the museum to deliver Liangzhu’s story through multimedia approaches to attract more people, especially the youth, as modern technology bridges the gap between young people and cultural relics.
1. What is the crucial significance of Liangzhu cultural relics?| A．Unearthing various prehistoric burial objects. |
| B．Representing the world’s earliest rice culture. |
| C．Enriching the UNESCO World Heritage List. |
| D．Confirming China’s 5,000-year-old civilization. |
| A．To inspire the curiosity of students. |
| B．To show the aim and effects of using AR glasses. |
| C．To highlight hi-tech brings people close to cultural relics. |
| D．To present opinions of appreciating cultural relics vary. |
| A．The discovery of the cultural relics. |
| B．The restoration of the ruins and relics. |
| C．The process of forming intelligentization. |
| D．The reconstruction of the Liangzhu Museum. |
| A．Stories behind the AR Glasses |
| B．Adventures in Liangzhu Museum |
| C．A New Chapter for Liangzhu Museum |
| D．An Encounter with the Prehistoric China |
8 . Anyone who commutes(通勤)by car knows that traffic jams are an unavoidable part of life. But humans are not alone in facing potential backups.
Ants also commute-between their nest and sources of food. The survival of their habitats depends on doing this efficiently.
When humans commute, there's a point at which cars become dense(稠密) enough to slow down the flow of traffic, causing jam. Researchers wanted to know if ants on the move could also get stuck. So they regulated traffic density by constructing bridges of various widths between a colony of Argentine ants and a source of food. Then they waited and watched, trying to find out at what point they are going to have a traffic jam.
But it appears that that never happened. They always managed to avoid traffic jam. The flow of ants did increase at the beginning as ants started to fill the bridge and then levelled off at high densities. But it never slowed down or stopped, even when the bridge was nearly filled with ants.
The researchers then took a closer look at how the behaviour of individual ants impacted traffic as a whole. And they found that when ants sense overcrowding, they adjust their speeds and avoid entering high-density areas, which prevents jams. These behaviors may be promoted by pheromones, chemicals that tell other ants where a trail is. The ants also manage to avoid colliding(碰撞) with each other at high densities, which could really slow them down.
Can ants help us solve our own traffic problems? Not likely. That's because when it comes to getting from point A to point B as fast as possible, human drivers put their own goals first. Individual ants have to be more cooperative in order to feed the colony. But the research could be useful in improving traffic flow for self-driving cars, which can be designed to be less like selfish humans-and more like ants.
1. How did the researchers control the traffic density of the commuting ants?| A．Through closer observation. |
| B．By controlling the widths of their path |
| C．By finding out the dense points. |
| D．By regulating their numbers. |
| A．They depend on their natural chemicals to adjust their speeds. |
| B．They follow a special route. |
| C．They never stop or slow down on the way. |
| D．They level off at high densities. |
| A．Traffic jams |
| B．Survival of an ant colony |
| C．Differences between human and ants |
| D．Unavoidable? Not for ants! |
9 . Solving great space mystery
Monkey King, the hero in the classic Chinese novel Journey to the West, is making headlines again. On Nov 30, China’s Dark Matter Particle Explorer(DAMPE, 暗物质粒子探测卫星), which is named after Monkey King’s Chinese name Wukong, found mysterious signals in the universe that may help scientists learn more about dark matter, according to Xinhua News Agency.
“This is the first time scientists have found such detailed and precise signals, ” Chang Jin, vice director of the Purple Mountain Observatory of the Chinese Academy of Sciences (中国紫金山天文台), told Xinhua.
Dark matter is a type of hypothetical(假设的)matter in the universe. Scientists believe that it influences the movement of galaxies. However, no one has ever directly observed it.
Swiss astronomer Fritz Zwicky first used the term “dark matter” in 1933, when he spotted something very unusual. Some galaxies that Zwicky saw were spinning so fast that they should have scattered into all comers of the universe, but they didn’t. He realized there must have been something else there that had a strong enough gravitational pull to hold everything together. He called it“dark matter”.
In one sense, dark matter is like the wind：we can’t see it, but we know it’s there.
Finding out more about dark matter could help us understand how the universe began, but being able to do so isn’t easy. Scientists believe that when two dark matter particles crash together, they form new particles and produce high amounts of energy and heat. This is why explorers like Wukong are sent to find such particles.
Indeed, “Wu” means “understanding” and “kong” means “void(空的). ” The nickname symbolizes the main goal of DAMPE’s mission, which is to understand dark matter better.
Since its launch in 2015, DAMPE has already recorded 3. 5 billion high-energy particles, reported Newsweek. And according to Science, the satellite has a lifespan of five years, which means it still has three more years to “understand the void”. “DAMPE has opened a new window tor observing the high-energy universe, unveiling new physical phenomena beyond our current understanding, ” Chang told Xinhua.
1. On Nov 30, DAMPE______________.| A．was named Wukong by Chinese scientists |
| B．was successfully launched into space |
| C．located dark matter in the universe for the first time |
| D．detected clear signals related to dark matter |
| A．is a spinning galaxy |
| B．is a type of gravitational pull |
| C．is made up of invisible particles that hold galaxies together |
| D．makes mysterious stars scattered in the universe |
| A．the movement of galaxies |
| B．the origin of the universe |
| C．how crashes happen between dark matter particles |
| D．how to make use of high energy caused by crashes |
| A．It has recorded 35 billion high-energy particles so far. |
| B．It will be able to keep working for another five years. |
| C．It was made to observe and identify dark matter in the universe. |
| D．It could help prevent dark matter particles crashing together. |
10 . Now, chemists have discovered new potential in abundant building blocks: Through a series of reactions, scientists have shown that conventional bricks can be transformed into energy storage devices powerful enough to turn on LED lights. “What we have demonstrated in our paper is sufficient enough for you to light up emergency lighting that's in a hallway or sensors that could be put inside the walls of a house, "said Julio M. D’ Arcy, an assistant professor of chemistry at Washington University in St. Louis, Missouri, and one of the study's authors. "The next step is trying to store more energy, so that you can power bigger devices--like maybe a laptop--directly from the walls of the house. ”
“Bricks have been prized by architects for their capacity to store heat, but using them to hold electricity has never been tried before, "D'Arcy said. To allow the bricks to store electricity, the researchers pumped a series of gases inside the brick. "The gases react with the brick's chemical components, coating them with a web of plastic nanofiber (纳米纤维）known as a PEDOT, which is a good conductor of electricity, "he said. Though PEDOT can store large amounts of energy, this supercapacitor (超级电容器）cannot hold onto that charge or deliver sustained energy over long periods of time like batteries can. “A battery will give you energy density that will allow you to drive 300 miles, but a supercapacitor will allow you to accelerate very quickly at a red light,” D’ Arcy said.
Still, scientists see potential in the bricks as a possible green energy solution. Right now, these "smart bricks" cannot compete with the energy storage potential of the lithium-ion (锂离子）batteries used in many solar power systems. However, there is hope that this new technology could be developed to provide a new storage method using readily available materials.
“The performance is a long way short of custom-made supercapacitors, but the principle is proven and there is significant room for improving the storage characteristics by optimizing the structure and chemistry of the bricks,” said Dan Brett, a professor of electrochemical engineering at University College London, who was not involved in the study.
1. What will the scientists do about the bricks next according to M. D'Arcy?| A．Put the bricks into commercial use. |
| B．Refer their paper to academic journals. |
| C．Expand the bricks' ability of storing power. |
| D．Develop new smart laptop with powered bricks. |
| A．It allows bricks to take up less space. |
| B．It can protect bricks with a powered coat. |
| C．It helps bricks store and conduct electricity. |
| D．It can make the powered vehicles travel farther. |
| A．They need much more development. |
| B．They are more environmentally-friendly. |
| C．They will be released into the market soon. |
| D．They can be made according to consumers' requirements. |
| A．Making the most of. | B．Trying out for. |
| C．Breaking up with. | D．Breaking away from. |
