1 . Light pollution is a significant but overlooked driver of the rapid decline of insect populations, according to the most comprehensive review of the scientific evidence to date.
Artificial light at night can affect every aspect of insects' lives, the researchers said. "We strongly believe artificial light at night — in combination with habitat loss, chemical pollution.invasive (入侵的) species, and climate change — is driving insect declines, " the scientists concluded after assessing more than 150 studies.
Insect population collapses have been reported around the world, and the first global scientific review published in February, said widespread declines threatened to cause a "catastrophic collapse of nature's ecosystems".
There are thought to be millions of insect species, most still unknown to science, and about half are active at night. Those active in the day may also be disturbed by light at night when they are at rest.
The most familiar impact of light pollution is moths (飞蛾) flapping around a bulb, mistaking it for the moon. Some insects use the polarisation of light to find the water they need to breed, as light waves line up after reflecting from a smooth surface. But artificial light can scupper (使泡汤) this. Insects are important prey (猎物) for many species, but light pollution can tip the balance in favour of the predator if it traps insects around lights. Such increases in predation risk were likely to cause the rapid extinction of affected species, the researchers said.
The researchers said most human-caused threats to insects have analogues in nature, such as climate change and invasive species. But light pollution is particularly hard for insects to deal with.
However, unlike other drivers of decline, light pollution is relatively easy to prevent. Simply turning off lights that are not needed is the most obvious action, he said, while making lights motion-activated also cuts light pollution. Shading lights so only the area needed is lit up is important. It is the same with avoiding blue-white lights, which interfere with daily rhythms. LED lights also offer hope as they can be easily tuned to avoid harmful colours and flicker rates.
1. What is discussed in the passage?| A．Causes of declining insect populations. |
| B．Consequences of insect population collapses. |
| C．Light pollution: the key bringer of insect declines. |
| D．Insect declines: the driver of the collapsed ecosystem. |
| A．How light travels in space. |
| B．How light helps insects find food. |
| C．How the food chain is interrelated. |
| D．How light pollution affects insects. |
| A．Selective things. | B．Similar things. | C．Variations. | D．Limitations. |
| A．To offer solutions. |
| B．To give examples. |
| C．To make comparisons. |
| D．To present arguments. |
2 . When you think of the Himalayas, you may picture tall, rocky, snow-covered peaks. But that’s not true.
The subnival (亚冰雪的) region is the zone between the treeline and the snowline. It is 5 to 5 times as large as the areas of glaciers and permanent snow, which means studying it is vital to understanding the Himalayas as a whole.
The treeline is the edge of an ecosystem where trees are able to grow, and beyond the treeline environmental conditions become too tough to allow tree growth. Meanwhile, snowlines are the boundaries on mountains that separate areas with permanent snow (where snow is present for the majority of the year) from areas with seasonal or no snow.
Researchers used satellite data from 1993 to 2018 to measure plant cover between 4,150 meters and 6,000 meters above sea level. The scientists discovered that the greatest increase in plant cover was between an altitude of 5,000 meters and 5,500 meters. Subnival plants mostly include small shrubs and grasses.
Even areas once completely occupied by glaciers now hold rocks covered with mosses, lichen, and sometimes even flowers. In addition, the snowline seems to be retreating, while the treeline is expanding. This shows that the region is becoming warmer, causing more melting of snow and allowing vegetation to move up in height.
In the past 40 years, 25% of all Himalayan ice has been lost due to global warming. Himalayan glaciers are reducing by about 0.5 meters each year. The rate of glacier melting has doubled in this decade. The melting of glaciers increases water in the region, making it wetter. Receding snow also forces the snowline to move up, providing a greater amount of area for the warm and moist conditions, which are perfect for vegetation growth.
As of now, we do not know whether vegetation will accelerate or slow down the rate of glacier melting.
1. How does the writer develop the third paragraph?| A．By explaining concepts. | B．By providing some examples. |
| C．By analyzing causes and effects. | D．By listing specific data. |
| A．Disappearing. | B．Lengthening. | C．Withdrawing. | D．Widening. |
| A．The snowline moves up. | B．Glaciers are melting faster. |
| C．The subnival area is wetter. | D．Plants grow much better. |
| A．The climate of the Himalayas is changing. | B．Icebergs in the Himalayas have disappeared. |
| C．Plants are diverse in the Himalayas. | D．Plant life spreads in the Himalayas. |
3 . JeffBezos has a rule at Amazon, or perhaps more appropriate a philosophy. If a team cannot be fed by two pizzas then that team is too large. The reasoning is quite straightforward and basic. More people means more communication, more bureaucracy, more chaos, and more of pretty much everything that slows things down, hence why large organizations are oftentimes considered as being so inefficient.
In 2013 Gallup released a report called “The State of The American Workplace", in which they found that smaller companies had more engaged employees. In fact,42% of employees working at companies of 10 or fewer were engaged at work versus only 30% of employees at large companies.
Most people are not familiar with the Ringelmann Effect which is the tendency for individual members to become less productive as the size of a group increases. This concept was named after Maximilien Ringelmann, a French professor of agricultural engineering who passed away in 1931.In one of his experiments he asked volunteers to perform a very simple task, to pull on a rope. He found that when only one person is pulling on the rope they give 100% of their effort; however, as more people are added the individual effort goes down.
This experiment was recreated in the 1970's by Alan Ingham who came up with the concept of “social loafing” which helps us understand why the individual effort decreases as the team size increases. So why does this happen? Because it becomes harder to extract the individual contributions and performance of each person.
Organizations should really think about what their team structures look like and create and follow similar “two pizza rules”. It's no coincidence that smaller organizations are oftentimes more nimble while large organizations look like they are stuck in the mud.
1. What is the author's purpose of mentioning “two pizza rules” in paragraph 1?| A．To make a comment. |
| B．To introduce the topic. |
| C．To provide an example. |
| D．To analyze a phenomenon. |
| A．It repeated the Ringelmann Effect experiment. |
| B．It was based on a simple task of pulling a rope. |
| C．It aimed to explore the reason behind the phenomenon. |
| D．It revealed the link between team size and individual effort. |
| A．Balanced. |
| B．Complicated. |
| C．Simple. |
| D．Flexible. |
| A．What Makes a Team More Productive? |
| B．Why Are Smaller Teams Better Than Larger Ones? |
| C．How Can Two Pizzas Be Shared by One Team? |
| D．Which Is More Important: Individual Effort r Team Size? |
4 . Nowadays, video gaming has made impressive gains in the field of standardized competition. One of the fashionable debates is whether competitive video games are sports or not. If cyberathletes are competing against formal teams in a formal environment, with real titles and monetary stakes on the line, it seems strange not to consider the activity a sport. However, unless something technologically odd gains complete control over our world in the next few decades, they never should be. Cyberathletes and eSports aren’t incomparable to traditional athletes and sports because they require less physical exertion or dedication. They are incomparable because they are different from traditional sports in a number of ways.
Traditional sports are steadfast, and consistent in their structures and mechanics. A professional American football player from any past decade could be transplanted into a current football field, and would only have to be told of a few minor rule changes. The player would know what to do, where to go, and how to accomplish the ultimate goal. He may need to learn a few new plays, but it’s fundamentally the same game. However, competitive video gaming has a variety of goals, and those goals are fluid and dynamic. A competitive video gamer from decades past might be aware of the final goal (winning the game, capturing the flag, eliminating the opposing team, etc.), but the execution (执行方式) would be completely foreign. Controls change, maps change, locations change, even the minute rules are adjusted on a regular basis. As a competitive video gamer, one needs to adapt to a much more aggressive ruleset than most sports or other games. Therefore the video game competitions are less likely to be properly regulated.
Most traditional sports are approachable by Everyman, even the esoteric(深奥的) ones, at least in an educational setting, where budgets and funding are set for them. While home computers are widely accessible, a large percentage of the gaming population is unable to participate in competitive gaming due to the high-standard computing requirements. Even decade-old competitive games like Counter-Strike 1.6 require more equipment and gear than most traditional sports. A pick-up game of basketball, football, or soccer is far more accessible than a pick-up game of Counter-Strike.
Traditional sports are embedded in our culture for good reasons: they offer an entertaining diversion and a great form of physical activity for millions of worldwide fans. The principles and lessons gleaned from traditional sports emphasize teamwork, collaboration, and critical evaluations of any given game setting. While many of these lessons are applicable to competitive gaming, competitive video gamers are still distancing themselves from competing for “sport” status, when their pastime and trade is so fundamentally different and ever-changing at such a regular pace.
1. What is the author’s opinion towards competitive video games?| A．They can be seen as sports due to their emphasis on teamwork. |
| B．They can be seen as sports due to their standardized regulations. |
| C．They can not be seen as sports due to their lack of physical and mental efforts. |
| D．They can not be seen as sports due to the inconsistent rules and high requirements. |
| A．Difficult. | B．Common. | C．Typical. | D．Different. |
| A．To explain the reason why eSports surpass traditional sports. |
| B．To explore the possibility that competitive video games will be sports. |
| C．To provide an example of the difference between eSports and traditional sports. |
| D．To account for the fact that the competitive features of video games are impressive. |
| A．By quoting and citing. |
| B．By listing and analyzing. |
| C．By comparison and contrast. |
| D．By explaining and evaluating. |
5 . For most people, graduation is an exciting day the celebration of years of hard work. My graduation day... was not.
I remember that weekend two years ago. Family and friends had flown in from across the country to watch our class walk across that stage. But like everyone else in my graduating class, I had watched the economy turn from bad to worse. What I thought would take a week dragged into two. and then four, and 100 job applications later, I found myself in the exact same spot as 1 was before. And the due date to begin paying back my student loans was creeping ever closer.
You know that feeling when you wake up and you are just consumed with fear? Fear about something you can't control—that sense of approaching failure that remains over you as you hope that everything that happened to you thus far was just a bad dream? That feeling became a constant in my life. And the most frustrating part was no matter how much 1 tried, 1 just couldn't seem to make any progress.
So what did I do to maintain my sanity（理智）？ I wrote. Something about putting words on a page made everything seem a little clearer—a little brighter. Something about writing gave me hope. And if you want something badly enough... sometimes a little hope is all you need! So I channeled my frustration into a children's book. And then one day, without any sort of writing degree or contacts in the writing world — just a lol of hard work and perseverance—I was offered a publishing contract for my first book! After that, things slowly began to fall into place. 1 was offered a second book deal. Then, a few months later, I got an interview with The Walt Disney Company and was hired shortly after.
The moral of this story is... don't give up. Even if things look bleak now, don't give up. Things change If you work hard, give it time, and don't give up, things will always get better Oftentimes all we need is the courage to push beyond the river.
1. From Paragraph 2, we can learn that the author probably.| A．was having an exciting graduation |
| B．was getting into financial difficulties |
| C．missed the life in the university |
| D．had just applied for the student loans |
| A．By sending applications. | B．By offering contracts. |
| C．By keeping writing. | D．By publishing books. |
| A．unattractive | B．hopeless |
| C．thrilling | D．promising |
| A．Success belongs to the persevering. |
| B．A contented mind is a perpetual（长久的）feast. |
| C．A smooth sea never makes a skillful mariner. |
| D．Misfortunes tell us what fortune is. |
6 . In a large survey of people's first memories, nearly 40% of participants reported a first memory that is likely to be fictional, according to findings published in Psychological Science, a journal of the Association for Psychological Science.
Current research indicates that people's earliest memories date from around 3 to 3. 5 years of age. However, the study from researchers at City, University of London, the University of Bradford, and Nottingham Trent University found that 38.6% of 6, 641 participants claimed to have memories from age 2 or younger, with 893 people claiming memories from age 1 or younger. This was particularly prevalent among middle-aged and older adults.
As many of these memories dated before the age of 2 and younger, the authors suggest that these fictional memories are based on remembered fragments(碎片) of early experience—such as a pram(婴儿车)，family relationships and feeling sad—and some facts or knowledge about their own infancy or childhood which may have been derived from photographs or family conversations.
“Further details may be unconsciously inferred or added, e. g. that one was wearing nappy when standing in the cot(幼儿床)," added Shazia Akhatr, first author on the study and Senior Research Associate at the University of Bradford.
“When we looked through the responses from participants we found that a lot of these first 'memories' were frequently related to infancy, and a typical example would be a memory based around a pram," explained Martin Conway, Director at the Centre for Memory and Law at City, University of London and coauthor of the paper.
“For this person, this type of memory could have resulted from someone saying something like 'mother and a large green pram'. The person then imagines what it would have looked like. Over time these fragments then become a memory and often the person will start to add things in such as a string of toys along the top," he added.
"Crucially, the person remembering them doesn't know this is fictional," Conway noted. "In fact when people are told that their memories are false they often don't believe it. This partly due to the fact that the systems that allow us to remember things are very complex, and it's not until we're 5 or 6 that we form adult-like memories due to the way that the brain develops and due to our maturing understanding of the world.
1. What does the underlined word "prevalent" in Paragraph 2 probably mean?| A．Unique. | B．Crazy. | C．Common. | D．Doubtful. |
| A．Some people have clear knowledge about their own infancy. |
| B．Added details are an important clue to recall the childhood. |
| C．Most people claimed to have memories from age 2 or younger. |
| D．Talks between family members influence the earliest memories. |
| A．By making comparison. | B．By setting examples. |
| C．By analyzing data. | D．By referring to documents. |
| A．Many people's earliest memories may be fictional. |
| B．People's earliest memories can date back to 2 or younger. |
| C．The middle-aged and adults specialize in detailing their first memory. |
| D．Memories develop due to our maturing understanding of the world. |
7 . I did an experiment last week. No, nothing involving test tubes or beakers (烧杯). Instead, I experimented with not watching the news right before I went to bed.
This is a long-time habit of mine so it’s probably not surprising that the first couple of nights I got a little twitchy when news time rolled around and I wasn’t watching. To distract myself, I went to bed a little earlier and read. Wow, what a treat that was! I love to read but I don’t always make the time for it so this felt quite luxurious. On the nights I didn’t read, I spent a little extra time petting my dog, Henry. He loved it. There’s never enough ear scratching for him. The compromise nights were when I had a book in one hand and was petting the dog with the other. Happy all around!
The funny thing about happiness is that it’s a whole lot easier to feel when you’re not being bombarded (轰炸) by images of bad news. It’s not like skipping the late news means that I don’t know what’s going on in the world. I still do read, listen to, and watch news stories. Just not right before I go to bed. That makes it easier to fall asleep and then stay asleep without dreaming about crime, wars, or natural disasters. (Although that dream I had about going to the prom might count as a natural disaster!) It’s definitely a much gentler way to end the day. I like it so much that I’m going to not only continue the no news before bed practice, but I’m also going to experiment with turning off other electronics earlier in the evening, things like the computer and smart phone.
Do you have any experience with turning off your electronics early in the evening? Does setting a particular time, like digital Quiet Hours, work? Please share any tips you have. Something tells me that this could be a little more challenging for me than no news.
1. What does the underlined word “twitchy” mean?| A．Angry. | B．Sad. | C．Anxious. | D．Pleased. |
| A．To treat himself with snacks. |
| B．To read to his dog. |
| C．To turn off the TV. |
| D．To read in bed. |
| A．He had more time to walk his dog. |
| B．He was less exposed to images of bad news. |
| C．He was cut off from the current world. |
| D．He had nightmares. |
| A．To encourage the readers to cut down time on electronics. |
| B．To gather the readers’advice in watching TV. |
| C．To share the effect of watching news. |
| D．To tell the readers the importance of reading. |
8 . Albert Einstein’s 1915 masterpiece “The Foundation of the General Theory of Relativity” is the first and still the best introduction to the subject, and I recommend it as such to students. But it probably wouldn’t be publishable in a scientific journal today.
Why not? After all, it would pass with flying colours the tests of correctness and significance. And while popular belief holds that the paper was incomprehensible to its first readers, in fact many papers in theoretical physics are much more difficult.
As the physicist Richard Feynman wrote, “There was a time when the newspapers said that only 12 men understood the theory of relativity. I do believe there might have been a time when only one man did, because he was the only guy who caught on, before he wrote his paper. But after people read the paper a lot understood the theory of relativity in some way or other, certainly more than 12.”
No, the problem is its style. It starts with a leisurely philosophical discussion of space and time and then continues with an exposition of known mathematics. Those two sections, which would be considered extraneous today, take up half the paper. Worse, there are zero citations of previous scientists’ work, nor are there any graphics. Those features might make a paper not even get past the first editors.
A similar process of professionalization has transformed other parts of the scientific landscape. Requests for research time at major observatories or national laboratories are more rigidly structured. And anything involving work with human subjects, or putting instruments in space, involves piles of paperwork.
We see it also in the Regeneron Science Talent Search, the Nobel Prize of high school science competitions. In the early decades of its 78-year history, the winning projects were usually the sort of clever but naive, amateurish efforts one might expect of talented beginners working on their own. Today, polished work coming out of internships(实习) at established laboratories is the norm.
These professionalizing tendencies are a natural consequence of the explosive growth of modern science. Standardization and system make it easier to manage the rapid flow of papers, applications and people. But there are serious downsides. A lot of unproductive effort goes into jumping through bureaucratic hoops(繁文缛节), and outsiders face entry barriers at every turn.
Of course, Einstein would have found his way to meeting modern standards and publishing his results. Its scientific core wouldn’t have changed, but the paper might not be the same taste to read.
1. According to Richard Feynman, Einstein’s 1915 paper ________.| A．was a classic in theoretical physics |
| B．turned out to be comprehensible |
| C．needed further improvement |
| D．attracted few professionals |
| A．Unrealistic. | B．Irrelevant. |
| C．Unattractive. | D．Imprecise. |
| A．The application of research findings. |
| B．The principle of scientific research. |
| C．The selection of young talents. |
| D．The evaluation of laboratories. |
| A．What makes Einstein great? |
| B．Will science be professionalized? |
| C．Could Einstein get published today? |
| D．How will modern science make advances? |
9 . Every year more people recognize that it is wrong to kill wildlife for “sport”. Progress in this direction is slow because shooting is not a sport for watching, and only those few who take par realize the cruelty and destruction.
The number of gunners, however, grows rapidly. Children too young to develop proper judgments through independent thought are led a long way away by their gunning parents. They are subjected to advertisements of gun producers who describe shooting as good for their health and gun-carrying as a way of putting redder blood in the veins（血管）. They are persuaded by gunner magazines with stories honoring the chase and the kill. In school they view motion pictures which are supposedly meant to teach them how to deal with arms safely but which are actually designed to stimulate（刺激）a desire to own a gun.
Wildlife is disappearing because of shooting and because of the loss of wildland habitat Habitatloss will continue with our increasing population, but can we slow the loss of wildlife caused by shooting? There doesn't seem to be any chance if the serious condition of our birds is not improved. Wildlife belongs to everyone and not to the gunners alone. Although most people do not shoot, they seem to forgive shooting for sport because they know little or nothing about it. The only answer, then, is to bring the truth about sport shooting to the great majority of people.
Now, it is time to realize that animals have the same right to life as we do and that there is nothing fair or right about a person with a gun shooting the harmless and beautiful creatures. The gunners like to describe what they do as character-building, but we know that to wound an animal and watch it go through the agony of mortality can make nobody happy. If, as they would have you believe, gun-carrying and killing improve human character, then perhaps we should encourage war.
1. According to the text, most people do not seem to be against hunting because .| A．they have little knowledge of it. |
| B．it helps to build human character. |
| C．it is too costly to stop killing wildlife. |
| D．they want to keep wildlife under control. |
| A．difficulty. | B．tress. | C．pain. | D．sadness. |
| A．teach them how to deal with guns safely. |
| B．praise hunting as character building. |
| C．describe hunting as a physical exercise. |
| D．encourage them to have guns of their own. |
| A．Hunting to build human character makes no sense. |
| B．War in the best way to improve human character. |
| C．We are on the edge of war against gunners. |
| D．Protecting wildlife from gunners is extremely difficult. |
10 . There was a time when the major concern with AI safety had been the one evil super intelligence, reflected in the movie “The Terminator”. However, the game “Tacoma” takes a different approach. It assumes that there will be numerous AGI (artificial general intelligence) in the world and that any AGI, even a safely designed one, in the wrong hands at the wrong time could cause live« to be lost. That's the future that a growing number of AI safety experts are worried about.
This is not a new idea. In the book “Engineering a Safer World,” MIT professor Nancy G. Leveson addresses common misunderstandings about safety-critical systems engineering: engineering systems whose failure could lead to human loss. Such safety-critical technologies include aviation, nuclear power, automobiles, heavy chemicals, biotechnology, and, of course, AGI.
So what can be done?
Technology isn’t always the solution. A famous example is the invention of sonic radars (声波雷达) that were supposed to help ships detect nearby obstacles, but which only increased the rate of accidents. Why? Captains sailed faster, thinking they could get away with it thanks to the new safety technology.
Instead of technologies, Leveson's book suggests, we should be making organizational changes. Additionally, Leveson suggests, among many complicated guidelines, organizations should be aware that safety guidelines will inevitably become lax over time. As a consequence, measures should be carried out to prevent potential disasters.
What lessons can we draw from concern with AI safety? The answer may lie in recent disaster narratives (叙述), which remind us that, especially in limes like this, we shouldn't forget the potential for other disasters. Public conscience really does matter. And if we're all better at thinking about safety we citizens, maybe we really can prevent disasters.
1. Why does the author mentioned “The Terminator” in the first paragraph?| A．To arouse readers' interest in The Terminator. |
| B．To introduce the topic of concern with AI safely. |
| C．To mention the similarity between “The Terminator” and “Tacoma”. |
| D．To make readers recall the evil super intelligence reflected in the movie. |
| A．Because captains seldom used them. |
| B．Because the radars failed to work properly. |
| C．Because captains depended on them too much. |
| D．Because the ships couldn't detect nearby obstacles. |
| A．Safe. | B．Important. |
| C．Unreliable. | D．Unnecessary. |
| A．Disaster prevention Lessons from AI. |
| B．Safety problems in modern society. |
| C．Engineering development in modern days. |
| D．Future applications of artificial intelligence. |
