1 . Randy Kraus was disabled. His left side was useless. He'd been a police officer before, and he was strong and able. Now, he felt he could do nothing.
His trouble started with Parkinson's disease, but it didn't end there. In July, 2002, the 60-year-old Kraus went into the hospital for an operation on his brain to control the shaking. But during the operation，he had a stroke. He was paralyzed. The doctor said, “You may never walk again and you might not even be able to talk.”
Kraus found that he couldn't lift a fork or take a drink by himself. Physical treatment was so painful and slow. What did he have to live for? So Kraus held the gun against his head. Feeling the cold metal on his skin, he began to consider the pain he would cause for his wife, daughters and grandchildren. He didn't pull the trigger (扳机)．
Andrew Garud, his exercise physiologist, told him, “You are where you are. The pace would be slow；the pain would be real. But as long as you are alive, you will have the ability to get better.”
After three months of working with Garud, Kraus wanted to see if he could stand.
He could. Then he took three steps, sat down and cried like a baby.
One step, as they say, led to another. Next he managed a short walk along the edge of a boxing ring (拳击台) in the health club. It was the hardest fight of Kraus's life. People at the gym cheered him on. Garud kept saying he could do more. Now, Kraus can brush his teeth，shave himself and get around the house with a walker. Only the disabled can fully understand little success.
1. According to the passage，we can learn that ________.| A．the stroke during the operation on his brain led to Kraus' disability |
| B．Kraus' operation in 2002 was performed by Andrew Garud |
| C．doing exercise can help cure Parkinson's disease |
| D．Kraus will lead a normal life as a healthy person in the future |
| A．Everyone in the world has the right to be alive. |
| B．It's necessary for people to do exercise to keep healthy. |
| C．One should try to lead a better life. |
| D．As long as a person is alive, he will have a chance to be better. |
| A．Optimism. | B．Strong mindedness. |
| C．Sympathy. | D．Generosity. |
2 . While many countries love their tea, UK citizens are particularly proud of being "tea people". The average UK citizen consumes nearly 2 kilograms of tea each year.Tea only made its way to England in large quantities in the first years of the 17th century. Tea from China and a few other Asian countries was being sold more widely in England at that time. Then tea became more and more popular among different social classes.
There are many varieties of tea. Black tea mixtures are still the most common type drunk in the UK. Black tea is dark in colour,because the leaves have been allowed to oxidize(氧化）before drying. This is why we usually serve it with milk,although it is not uncommon to drink it black or with lemon.
You may still find tea made with loose tea leaves, served up in a pot, and poured into the best china cups with saucers(茶托）for visitors.
Tea is still a large part of daily life in the UK today, but it seems to be on the decrease . The amount of tea sold in the UK fell by more than 10% in the five years leading up to 2002, and has been dropping ever since. Tea sales fell by 6% in 2014 alone, and most restaurants report selling more than twice as many cups of coffee as they do tea. More than 1 billion was spent on coffee in high street stores in 2013, more than twice what was spent on tea bags.
Still, what goes around comes around ; it's sure to become fashionable again.
1. Which of the following is true according to the first three paragraphs?| A．Tea made its way to England in the early years of the 16th century. |
| B．The UK usually serves black tea with lemon. |
| C．Tea from China is being sold more widely in England now. |
| D．UK citizens take pride in being "tea people". |
| A．Tea sales fell by 6% in 2014 alone. |
| B．The sales of tea have been on the decrease for about 20 years. |
| C．In 2013, the money spent on tea was f 3 billion. |
| D．Most restaurants like selling tea than coffee. |
| A．It can never succeed again. | B．Tea can become popular again. |
| C．Coffee is more popular than tea. | D．Tea is becoming less popular. |
3 . Last year, 138,000 San Francisco residents used Airbnb, a popular app designed to connect home renters and travelers. It’s a striking number for a city with a population of about 850,000, and it was enough for Airbnb to win a major victory in local elections, as San Francisco voters struck down a debatable rule that would have placed time restrictions and other regulations on short-term rental services.
The company fiercely opposed the measure, Proposition F, with a nearly $10 million advertising campaign. It also contacted its San Franciscan users with messages urging them to vote against Proposition F.
Most people think of Airbnb as a kind of couch-surfing app. The service works for one-night stays on road trips and longer stays in cities, and it often has more competitive pricing than hotels. It’s a textbook example of the “sharing economy”, but not everyone is a fan.
The app has had unintended consequences in San Francisco. As the San Francisco Chronicle reported last year, a significant amount of renting on Airbnb is not in line with the company’s image: middle-class families putting up a spare room to help make ends meet. Some users have taken advantage of the service, using it to turn their multiple properties into vacation rentals or even full-time rentals. Backers of Proposition F argued that this trend takes spaces off the conventional, better-regulated housing market and contributes to rising costs.
“The fact is, widespread abuse of short-term rentals is taking much needed housing off the market and harming our neighborhoods,” said ShareBetter SF, a group that supported Proposition F. Hotel unions have protested the company’s practices in San Francisco and other cities, saying that it creates an illegal hotel system.
San Francisco is in the middle of a long-term, deeply rooted housing crisis that has seen the cost of living explode. Actually, explode is a generous term. The average monthly rent for an apartment is around $4, 000. Located on a narrow outcropping of land overlooking the bay, San Francisco simply doesn’t have enough space to accommodate the massive inflow of young, high-salaried tech employees flocking to Silicon Valley.
As the Los Angeles Times reported, some San Francisco residents supported the measure simply because it seemed like a way to check a big corporation. Opponents of Proposition F countered that the housing crisis runs much deeper, and that passing the rule would have discouraged a popular service while doing little to solve the city’s existing problems.
1. The intention of Proposition F is to ________.| A．place time limits in local election. | B．set limits on short-term rental. |
| C．strike down a controversial rule. | D．urge users to vote against Airbnb. |
| A．It shrinks the living space of middle-class families. |
| B．Users are taken advantage of by the service financially. |
| C．It makes the house market more competitive. |
| D．It indirectly leads to high house rental price. |
| A．explosion of the living cost | B．its geographic characteristics |
| C．generosity of local enterprises | D．inflow of migrant population |
| A．objective | B．supportive |
| C．negative | D．indifferent |
4 . Earthworms don’t move fast. But humans can accelerate the worms’ spread. Fishermen often use invasive(蔓延性的) earthworms to catch fish. Many have introduced invasive earthworms to rivers, streams and lakes previously unexposed to these animals. Gardeners who use earthworms to make their soil rich may unknowingly introduce invasive ones. The worms even give rides in the mud on wheels, potted plants and road materials shipped around the nation.
But they’re not everywhere yet. In the Great Lakes region, “20 percent of the land is earthworm-free,” says Cindy Hale, a research biologist. Of the remaining 80 percent of land, half of the land has fewer than two earthworm species-meaning there isn’t yet too much impact on the ecosystem, she explains. For these regions, she says, now is the time to take action. According to Hale, educating the public, especially fishermen, is one approach to stopping the spread of invasive earthworms. Identifying which lands are currently earthworm-free is another.
Ryan Hueffmeier, a program coordinator for Great Lakes Worm Watch, has been working on a model that will help create large maps of areas with minimal(最小的) or no damage from earthworms. Ultimately, landowners can use it to identify earthworm activity on their property. once identified, lands with minimal or no earthworm damage should be protected.
But scientists suspect that once invasive earthworms arrive they can’t be removed. And even if all could be, affected forests might never return to the way they were. “It’s very much a story of learning to live with them,” concludes Lee Frelich of the University of Minnesota’s Center for Forest Ecology.
Forest ecologists have called earthworms “ecosystem engineers” because they can change or create habitats that otherwise would not be present. Whether this is a good thing depends on the situation.
“What the earthworms do and how we value it is what really matters.” said Hale. “In one place-farm fields or gardens-we really like European earthworms and what they do, so we consider them good. In native hardwood forests, we really don’t like what they do-so we consider them bad. You really have to understand how an organism(微生物) affects an ecosystem. Things aren’t black and white.”
1. Why are fishermen and gardeners mentioned in the first paragraph?| A．To attract more people to fishing and gardening. |
| B．To introduce different uses of invasive earthworms. |
| C．To stress the importance of invasive earthworms to humans. |
| D．To show humans’ effect on the spread of invasive earthworms. |
| A．Finding out areas free of earthworms. |
| B．Extending a ban on the fishing industry. |
| C．Making maps of areas with most earthworms. |
| D．Informing the public of different earthworm species. |
| A．Objective. | B．Positive. |
| C．Ambiguous. | D．Doubtful. |
| A．A biology textbook. | B．An official report. |
| C．A science magazine. | D．A research paper. |
5 . At 12, my father decided to take me on a trip to France. I had never been out of the country before, so I was very excited. My aunt, my father and I went around with my father showing us all the unbelievable sites in Paris. None of us spoke much French but we loved the city.
We had taken the subway all over the city and were congratulating ourselves on our mastering what is honestly an excellent subway design that is pretty easy to follow. We decided visit Versailles by train. We chatted happily along the way until my father realized we were into the French countryside and no one around spoke English.
We reached the end of the line and felt afraid when everyone finally left the train. An old man and his grandchild noticed us and came to help. He spoke no English, so in broken French we tried to explain. When he finally understood, this great man settled his grandson and showed us to the correct train and then boarded with us.
Later we knew the truth that there was a train transfer (转乘) and he didn't want us to miss it.
This kind man rode a train for an hour and a half out of his way to make sure that three Americans got where they wanted to be. He refused to let us pay for his ticket. He did it all with a gentle smile and patted our hands gently at the stop. Then in his quiet way, he boarded the train to return the way he had come.
What impressed me most was the man and his kindness during the amazing trip. Some Americans think the French are rude for some reason, but I always try to persuade them to change their minds with this very story.
1. What happened to the author and his family on the train?| A．They missed their stop. |
| B．They lost their packages. |
| C．They couldn't find the right line. |
| D．They argued over the nest destination. |
| A．By paying for their train tickets. |
| B．By showing them the returning way. |
| C．By inviting them to travel together. |
| D．By leading them to their place. |
| A．Travelling enriches one's life. |
| B．Being kind is a good manner. |
| C．Seeing is believing. |
| D．Helping others brings great pleasure. |
6 . 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! |
7 . The coronavirus has been a catalyst for change in many areas of our lives. As things return to normal, one thing that is likely to remain for many is the practice of working from home, known as telecommuting.
Much like the cloud classroom, the cloud office enables employees to cooperate, access resources and operate software from any location. Without doubt, communication tools play an important role. Video and voice chat allow a team, regardless of location, to work together as if they're in the same office.
The rise of telecommuting is due in part to time-tracking applications and software that allows employers to monitor productivity. Wechat Work and Work Examiner are all popular options that have been adopted by thousands of companies. These tools make employers feel secure that remote workers are staying on task. As an increasingly popular approach to work, the objective of the cloud office is to find the ideal balance between home and office work.
According to CNBC, a study showed that 85 percent of millennials（千禧一代）preferred working from home as it gives them a healthier work-life balance, flexible hours and more autonomy. It also showed that firms could save $ 11,000per person each year by allowing employees to work from home.
However, not everyone sees this revolution as positive. According to Bloomberg, in a survey of 1,001 US workers, 45 percent felt burnt out due to the increased workload, decreased communication and the requirement to juggle（兼顾）professional and personal life.
There has indeed been a mixed reaction to the move amid the pandemic.
It's believed that it will become more manageable once lockdown measures are fully lifted worldwide. And by then, who knows what tasks we could all achieve from the comfort of our sofas?
1. Which of the following is closest in meaning to the underlined word in the first paragraph?| A．disaster. | B．motivation. |
| C．cause. | D．disease. |
| A．Employers hold different opinions towards telecommuting. |
| B．The purpose of working from home is to help achieve work-life balance. |
| C．Working from home can help employers spend less on human resources. |
| D．Software that enables workers to monitor work gains increasing popularity. |
| A．Positive. | B．Negative. |
| C．Neutral. | D．Unclear. |
8 . Fire ants dig tunnels efficiently by only a small percentage of the group doing most of the work. Free-loaders just sit around while their hard-working colleagues get things done. But might freeloaders actually be necessary for society to function efficiently? The answer could be yes.
Fire ants are highly social organisms. So, Goldman, a physicist at Georgia Tech, and his colleagues wanted to know how individual ants knew what to do without a central leader issuing orders. To find out, Goldman's team labeled individual fire ants with paint and then watched them dig their narrow tunnels —barely wide enough for two workers. Turns out, just 30 percent of the ants did 70 percent of the labor. “I was surprised that we ended up with so few workers actually doing the work at any one time. ” A quarter of the ants never even entered the tunnel. Others crawled inside, but left without digging single grain of dirt. These idling behaviors ensured the tunnels did not get clogged with insect traffic, which would make the construction process stop.
And when the scientists removed the five hardest working ants from the colony, others immediately jumped in to compensate (补偿) — with no reduction in the group's productivity. It seems that it doesn’t matter which ants are working or freeloading at a given time, as long as there is some division of labor to keep the tunnels flowing smoothly. The findings are in the journal Science.
The study could have implications for robotics. Imagine groups of robots sent to search rubble (碎石) for disaster survivors. Or nanobots (纳米机器人) coursing through our bodies to diagnose illness and deliver targeted medical treatment. Such robot groups will need to avoid getting jammed up in tight spaces. It might be necessary to program them so some just sit back and watch their comrades work.
1. How do fire ants get the work done when digging tunnels?| A．Only the leaders do most of the work. |
| B．They all work under the order of one leader. |
| C．They all cooperate together to do the work efficiently. |
| D．Individual fire ants know their tasks and work efficiently. |
| A．crowded | B．transported |
| C．organized | D．covered |
| A．The ants will have no idea what to do. |
| B．Other ants will take their place and do the work. |
| C．The tunnels will get blocked and the work will stop. |
| D．The leader will compensate them and give them food as the reward. |
| A．fire ants are the most diligent insects. |
| B．scientists may diagnose illness more easily. |
| C．people may feel happy when they watch their colleagues do nothing. |
| D．scientists can deal with robotics better when coming to specific programs. |
9 . 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 |
10 . British anthropologists Russell Hill and Robert Barton of the University of Durham, after studying the results of one-on-one boxing, tae kwon do, Greco-Roman wrestling and freestyle wrestling matches at the Olympic Games, conclude that when two competitors are equally matched in fitness and skill, the athlete wearing red is more likely to win.
Hill and Barton report that when one competitor is much better than the other, colour has no effect on the result. However, when there is only a small difference between them, the effect of colour is enough to tip the balance. The anthropologists say that the number of times red wins is not simply by chance, but that these results are statistically significant.
Joanna Setchell, a primate (灵长目动物) researcher at the University of Cambridge, has found similar results in nature. She studies the large African monkeys known as mandrills. Mandrills have bright red noses that stand out against their white faces. Setchell’s work shows that the powerful males—the ones who are more successful with females—have a brighter red nose than other males.
As well as the studies on primates by Setchell, another study shows the effect of red among birds. In an experiment, scientists put red plastic rings on the legs of male zebra finches and this increased the birds’ success with female zebra finches. Zebra finches already have bright red beaks (鸟喙), so this study suggests that, as with Olympic athletes, an extra flash of red is significant. In fact, researchers from the University of Glasgow say that the birds’ brightly coloured beaks are an indicator of health. Jonathan Blount, a biologist, and his colleagues think they have found proof that bright red or orange beaks attract females because they mean that the males are healthier. Nothing in nature is simple, however, because in species such as the blue footed booby, a completely different colour seems to give the male birds the same advantage with females.
Meanwhile, what about those athletes who win in their events while wearing red? Do their clothes give them an unintentional advantage? Robert Barton accepts that “that is the implication” of their findings. Is it time for sports authorities to consider new regulations on sports clothing?
1. According to their research, Hill and Barton conclude that _____.| A．the colour of clothing has an effect on most sport events |
| B．red should be the choice of colour for clothing in sports |
| C．red plays a role when competitors are equally capable |
| D．athletes perform better when surrounded by bright red |
| A．achieve | B．seek | C．keep | D．change |
| A．male birds use different body parts to draw attention |
| B．red is not the only colour to attract female birds |
| C．blue gives female birds the same advantage |
| D．blue can indicate how healthy a bird is |
| A．What Colour Implies More Power? | B．A Tip on Clothing. |
| C．Need to Change the Rules in Sports? | D．Red Is for Winners. |
