1 . The Nobel Prize in Chemistry 2023 was awarded to three American scientists Moungi G. Bawendi, Louis E. Brus and Alexei I. Ekimov “for the discovery and development of quantum (量子) dots”. They are so tiny that their size determines their properties. These smallest components of nano (纳米) technology now spread their light from televisions and LED lamps, and can also guide surgeons when they remove cancer tissue, among many other things.
Everyone who studies chemistry learns that an element’s properties are governed by how many electrons (电子) it has. However, when matter contracts to nano-dimensions quantum phenomena arise; these are governed by the size of the matter. The Nobel winners in Chemistry 2023 have succeeded in producing particles so small that their properties are determined by quantum phenomena. The particles, which are generally known as quantum dots by scientists, are now of great importance in nanotechnology.
“Quantum dots have many fascinating and unusual properties. Importantly, they have different colours depending on their size,” says Johan Åqvist, Chai r of the Nobel Committee for Chemistry.
Physicists had long known that in theory size-dependent quantum effects could arise in nanoparticles, but at that time it was almost impossible to sculpture in nanodimensions. Therefore, few people believed that this knowledge would be put to practical use.
However, in the early 1980s, Alexei Ekimov succeeded in creating size-dependent quantum effects in coloured glass. The colour came from nanoparticles of copper chloride (氯化铜) and Ekimov demonstrated that the particle size affected the colour of the glass via quantum effects. A few years later, Louis Brus was the first scientist in the world to prove size-dependent quantum effects in particles floating freely in a liquid. In 1993, Moungi Bawendi revolutionised the chemical production of quantum dots, resulting in almost perfect particles. This high quality was necessary for them to be used in applications.
Quantum dots are thus bringing the greatest benefit to humankind. Researchers believe that in the future they could contribute to flexible electronics, tiny sensors, thinner solar cells and quantum communication — so we have just started exploring the potential of these tiny particles.
1. Why was the Nobel Prize in Chemistry 2023 awarded to 3 American scientists?| A．They discovered quantum size. | B．They discovered nanotechnology. |
| C．They discovered quantum effects. | D．They discovered and improved quantum dots. |
| A．Quantum dots. | B．Spots. | C．Atoms. | D．Grains. |
| A．Moungi Bawendi. | B．Louis Brus. | C．Alexei Ekimov. | D．Johan Åqvist. |
| A．Innovation is the most important thing. |
| B．Practice is the only criterion for testing truth. |
| C．The development of science and technology is endless. |
| D．Technology from quantum dots is constantly improving. |
2 . Here are some ways to introduce classical music to your children.
●When you read a story to your children, pick out a classical music piece that matches the emotion of the book.
●If your kids are always moving around, try introducing classical music to them by dancing. Instruct your children to listen to the music and dance however the music makes them feel. Parents dance with them!
●Before your kids begin playtime, make a list of classical music pieces with the name of the person who wrote it.
●
●You can pick out three pieces of music to play during the week.
| A．Have your children pick one. |
| B．Practice reading the story out loud with the music. |
| C．Mix up the music and see how your children react. |
| D．Classical music can be fun, and not boring to listen to. |
| E．Tell your children the name of the piece every time you play it. |
| F．Make sure you tell your children what the piece is and who wrote it. |
| G．While you and your children paint, play different classical music pieces. |
3 . As a teenager in the 1990s, Melissa Blake was interested in fashion. Unfortunately, fashion wasn’t much interested in her. Born disabled, Blake couldn’t find jeans or dresses in her size. Paging through fashion magazines, she didn’t see a single person who looked like her, and it hurt. “When you’re a teenager—disabled or not—you’re troubled by self-worth.”
Blake, 39, has spent her adult life trying to make up for that. She is a disability-rights activist and a writer whose work has appeared in the New York Times. But she gained national attention in 2019 after clapping back at people, who said she should be banned from posting photos of herself because she’s too ugly. Over the next year, Blake posted a new selfie (自拍照) every day. “I feel like every time I post my selfie or share something about my life as a disabled woman, I’m fighting against this ableism (残障歧视),” Blake said.
Her fans went wild, calling Blake a goddess and a powerful woman. Among her fans is Mindy Scheier, the founder and CEO of Runway of Dreams. The company shows fashion for people with disabilities. Last fall, Scheier asked Blake to be a model in the biggest fashion event of the year.
Scheier said, “Putting Melissa in the event made people realize how important it is to expand who consumers are in the fashion industry, or who should be on stage, or what we’re really standing for in the word model.”
“Often, when we think of access for people with disabilities, we think of buildings and employment,” Blake says. “But it’s also important to have access to what’s fun and enjoyable. When disabled people are included, it sends a message that we deserve a seat at the table in all aspects of life.”
1. What can we know about Blake from paragraph 1?| A．She didn’t have a good taste in fashion. | B．She couldn’t follow fashion for her disability. |
| C．She couldn’t find fashion items in magazines. | D．She didn’t see other disabled people in her life. |
| A．To defend her equal rights. | B．To attract public attention. |
| C．To share her life experience. | D．To expose unkind comments. |
| A．To show her admiration for her. | B．To increase fashion consumers. |
| C．To present the world of models. | D．To include the disabled in fashion. |
| A．From Role Model to Fashion Model. | B．From Teenager Model to Adult Model. |
| C．From Fashion Sufferer to Fashion Fighter. | D．From Fashion Follower to Fashion Leader. |
4 . Google Flights reveals new feature to help travelers save money
Regular users of Google Flights might notice a new feature the next time they go to the site to check out airline schedules and compare flight prices.
The new feature officially announced on Monday morning in a news release is Google guidance on the cheapest time to book a flight, which adds price tracking alerts and a price guarantee option already in place.
Cheapest time to book: Google Flights said starting this week, searches that have reliable trend data will let users see in what time frame prices have typically been lowest. Users can then better decide whether to book now or later, Google said in the release.
Take flights from New York to Miami, for example, the cheapest time to book is usually from Sep 13 to Dec 7. Prices during this time are $59 cheaper on average.
Price tracking: Users who want to wait for lower fares before booking can use a price tracking feature that “can do most of the heavy lifting for you,” Google said.
Price guarantee: On some flight results, users might notice a price guarantee badge (标志) pop up (this won’t happen on every use). If you book one of these flights, Google said it will monitor the price every day before takeoff.
“If the price does go down, we’ll pay you back the difference via Google Pay. These price guarantees are part of a pilot program available for select Book on Google itineraries (行程) departing from the U. S.,” Google said in the release.
1. Which is the cheapest time to book a flight from New York to Miami?| A．August 19. | B．September 20. | C．December 8. | D．January 11. |
| A．Get your money back. | B．Pay back the difference. |
| C．Monitor the price before flights take off. | D．Make sure you can get the cheapest flight. |
| A．Science. | B．Entertainment. | C．Travel. | D．Education. |
5 . There’s a useful concept from psychology that helps explain why good people do things that harm the environment: the false consensus (共识) effect. That’s where we overvalue how acceptable and widespread our own behavior is in society. Put simply, if you’re doing something (even if you secretly know you probably shouldn’t), you’re more likely to think plenty of other people do it too. What’s more, you likely overestimate how much other people think that behavior is broadly OK.
This bias (偏见) allows people to justify socially unacceptable or illegal behaviors. Researchers have observed the false consensus effect in drug use and illegal hunting. More recently, conservationists are beginning to reveal how this effect contributes to environmental damage.
In Australia, people who admitted poaching (偷猎) thought it was much more widespread in society than it really was, and had higher estimates than fishers who obeyed the law. They also believed others viewed poaching as socially tolerable; however, in reality, more than 90% of fishers took the opposite stand on this. The false consensus effect has also shown up in studies examining support for nuclear energy and offshore wind farms.
Just as concepts from psychology can help explain some forms of environmental damage, so too can they help solve it. For example, research shows people are more likely to litter in areas where there’s already a lot of trash thrown around; so making sure the ground around a bin is not covered in rubbish may help.
Factual information on how other people think and behave can be very powerful. Energy companies have substantially reduced energy consumption simply by showing people their difference in electricity use compared to their neighbors. Encouragingly, stimulating people’s natural desire for social position has also been successful in getting people to “go green to be seen”, or to publicly purchase eco-friendly products.
As the research evidence shows, social standards can be a powerful force in encouraging and popularizing environmentally friendly behaviors. Perhaps you can do your bit by sharing this article!
1. Which example best illustrates the false consensus effect?| A．A student spends long hours surfing the Internet. |
| B．A blogger assumes many people dislike his posts. |
| C．A smoker believes people generally approve of smoking. |
| D．A driver frequently parks illegally in public places. |
| A．It is contradictory. | B．It is impractical. |
| C．It is widespread. | D．It is unacceptable. |
| A．Develop green habits for better health. |
| B．Choose green items that are easy to spot in stores. |
| C．Join green movements for personal fulfillment. |
| D．Make green choices that others can perceive. |
| A．Justify social standards. | B．Publicize sustainable practices. |
| C．Encourage technological innovations. | D．Highlight personal responsibilities. |
6 . The term “Hudson River school” was applied to the foremost representatives of nineteenth-century North American landscape painting. Apparently unknown during the golden days of the American landscape movement, which began around 1850s and lasted until the late 1860s, the Hudson River school seems to have emerged in the 1870s as a direct result of the struggle between the old and the new generations of artists each to assert its own style as the representative American art. The older painters, most of whom were born before 1835, practiced in a mode often self-taught and monopolized by landscape subject matter and were securely established in and fostered by the reigning American art organization, the National Academy of Design.
The younger painters returning home from training in Europe worked more with figural subject matter and in a bold and impressionistic technique; their prospects for patronage in their own country were uncertain, and they sought to attract it by attaining academic recognition in New York. One of the results of the conflict between the two factions was that what in previous years had been referred to as the American, native, or, occasionally New York school — the most representative school of American art in any genre — had by 1890s become firmly established in the minds of critics and public alike as the Hudson River school.
The sobriquet was first applied around 1879. While it was not intended as flattering, it was hardly inappropriate. The Academicians at whom it was aimed had worked and socialized in New York, the Hudson’s port city, and had painted the river and its shores with varying frequency. Most important, perhaps, was that they had all maintained with a certain fidelity a manner of technique and composition consistent with those of America’s first popular landscape artist, Thomas Cole, who built a career painting the Catskill Mountain scenery bordering the Hudson River.
A possible implication in the term applied to the group of landscapists was that many of them had, like Cole, lived on or near the banks of the Hudson. Further, the river had long served as the principal route to other sketching grounds favored by the Academicians, particularly the Adirondacks and the mountains of Vermont and New Hampshire different ways.
1. According to the passage what was the function of the National Academy of Design for the painters born before 1835?| A．It mediated conflicts between artists. | B．It supervised the incorporation of new artistic techniques. |
| C．It supported their growth and development. | D．It determined which subjects were appropriate. |
| A．In New Hampshire. | B．In the Adirondacks. |
| C．In Vermon. | D．In Europe. |
| A．people | B．sides | C．cities | D．images |
| A．Hudson River School | B．The Nature’s Nation |
| C．Early Painters and Their Drawings | D．North American Landscape Painting |
7 . Dementia (痴呆), a serious mental disorder caused by brain disease or injury, affects the ability to think, remember and behave normally. 160,000 people have some forms of dementia in Sweden, Alzheimer’s disease being the most common. At the same time, many new diagnostic (诊断的) methods and early-intervention treatment have been developed in recent years, which highlights the need to identify more risk factors for the disease.
Previous studies have demonstrated a possible association between depression and dementia. A present study now clearly shows that people who have been diagnosed with depression are more likely to be diagnosed with Alzheimer’s disease. Unlike the previous ones, the study was conducted using Region Stockholm’s administrative healthcare database, which contains all healthcare contacts recorded by the region. It shows that the risk of Alzheimer’s disease was more than twice as high in patients with stress and in patients with depression as it was in patients without either condition; in patients with both depression it was up to four times as high.
“The reason for it is unknown,” says the study’s last author Axel C. Carlsson. “The finding is important in that it enables us to improve preventative efforts and understand links with the other risk factors for dementia.”
The researchers focused on patients between the ages of 18 and 65 and between 2012 and 2013. They identified 44,447 people with a diagnosis of depression and followed them for eight years to see how many of them were later diagnosed with Alzheimer’s disease. A comparison with all other 1,362,548 individuals in the age group showed that more people with depression had also been diagnosed with Alzheimer’s disease.
“It’s very uncommon for people in this age group to develop dementia, so we need to identify all possible risk factors for the disease,” says Dr Carlsson. “We show here that the diagnosis is more common in people who have suffered depression, but more studies will be required if we’re to demonstrate any reason there.”
1. What do the previous studies and the present one differ in?| A．The target. | B．The method. |
| C．The purpose. | D．The theory. |
| A．It clarifies the condition of dementia. |
| B．It makes clear the risks of depression. |
| C．It confirms the previous study finding. |
| D．It helps with the dementia prevention. |
| A．Its process. | B．Its background. |
| C．Its application. | D．Its assessment. |
| A．Why dementia spreads wide in Sweden. |
| B．What links exist among mental diseases. |
| C．How depression connects with dementia. |
| D．What other risk factors lead to dementia. |
8 . Sammie, 14, knows there’s nothing worse than feeling left out. For years, she’s been helping kids who feel lonely make friends. What she was doing was running the Buddy Bench program. She started it when she was in the third grade, in Fort Wayne, Indiana. The idea was that anyone at school who was feeling lonely could sit on the “buddy bench.” The idea quickly caught on. The bench brought kids together. Since then, Sammie has helped communities all over the country set up buddy benches.
Sammie got the idea for the Buddy Bench program at summer camp in 2017. She thought it would be cool to have a buddy bench in her school, so when she got home, she presented the idea to her principal, her teachers, and her parents.
Getting approval for the project was just the first step. “There have been a lot of small challenges, like money,” Sammie says. To reduce costs and be eco-friendly, Sammie decided to make the bench out of recycled material. So she rallied her community to gather bottle caps. Sammie received encouraging responses. With people working together in an orderly way, she soon collected more than 1,200 pounds of bottle caps.
Sammie says the effort has helped her overcome personal challenges. “I used to be really, really shy,” she says. “I’m definitely more outgoing now.” She has also learned to acknowledge her limits, and to take breaks when working on a big project.
“You don’t have to be an adult to make a difference,” she says. Even small acts of kindness can be powerful. “It can make someone’s day and lead to a chain reaction,” she adds. “You never know. Just be kind, in general.”
1. Why did Sammie start the Buddy Bench program?| A．She desired to make friends. | B．She felt lonely since childhood. |
| C．She sought to show her kindness. | D．She wanted to help lonely children. |
| A．By getting approval from adults. | B．By collecting waste materials. |
| C．By selling eco-friendly products. | D．By raising money all over the world. |
| A．Brave and optimistic. | B．Helpful and creative. |
| C．Ambitious and generous. | D．Diligent and independent. |
| A．Never too old to learn. | B．Every coin has two sides. |
| C．Roses given, fragrance in hand. | D．Time and tide wait for no man. |
9 . Styrofoam, or polystyrene, is a light-weight material, about 95 percent air, with very good insulation (隔热) properties, according to Earthsource. org. It is used in products from cups that keep your drinks hot or cold to packaging material that protects items during shipping. With the above good features, Styrofoam still enjoys a bad reputation. It cannot be recycled without releasing dangerous pollution into the air. The U. S. Environmental Protection Agency says it is the fifth-largest creator of harmful waste.
But now the common worms which are usually disgusting can come to the rescue, specifically, meal-worms. Scientists from the U. S. and China have discovered that meal-worms can digest plastic. One meal-worm can digest a pill-sized amount of plastic a day. Study co-author Wei-Min Wu says that in 24 hours, the plastic is turned into carbon dioxide.
Since Styrofoam has no nutrition at all, are the worms hurt by eating plastic? Much to the scientists’ surprise, the study found that worms eating Styrofoam were as healthy as worms eating bran (谷糠) . The researchers will study the worm’s eating habits and digesting system, looking to copy the plastic breakdown but on a larger scale. Once the way can be put into practice, it will make a revolutionary difference to the disposal of plastic.
“Solving the issue of plastic pollution is important”, says Wu, a Stanford University environmental engineering instructor. After all, our earth is small and landfill space-is becoming limited with too much garbage waiting to be dealt with, he says.
About 33-million tons of plastic are thrown away in the United States every year. Plastic plates, cups and containers take up 25 percent to 30 percent of space in America’s landfills. One Styrofoam cup takes more than 1 million years to recycle in a landfill, according to Cleveland State University.
1. What do we know about Styrofoam?| A．It can be used to cool drinks. | B．It is a weightless material. |
| C．It is harmful when recycled. | D．It is usually used on ships. |
| A．Meal-worms have amazing digesting power. | B．Meal-worms are not bad in their nature. |
| C．Meal-worms can rescue people’s lives. | D．People misunderstood meal-worms in the past. |
| A．by raising amounts of meal-worms | B．by environmental engineering instructors |
| C．using a method inspired by eating meal-worms | D．without sending out dangerous pollution |
| A．Styrofoam is widely used in daily life. | B．Meal-worms are genius at eating plastic |
| C．Plastic recycling may be no more a problem. | D．Plastic can be turned into carbon dioxide |
10 . Via Rail
Train Tickets from New York to Washington
Station | Departure | Arrival | Price |
Penn Station—Union Station | 12:20 am | 3:57 am | $19 |
Penn Station Union Station | 4:20 am | 8:33 am | $29 |
Penn Station—Union Station | 6:02 am | 10:14 pm | $60 |
Penn Station—Union Station | 8:00 am | 10:58 am | $70 |
Discount Policies
Seniors (above 60 years old) can benefit from a 20% discount offered by Via Rail, making it a cost-effective choice for their travel needs.
Luggage(行李) Allowance and Restriction
Via Rail allows passengers to bring up to four pieces of luggage. Carry-on items must not exceed (超过) 50 pounds and checked luggage must not weigh more than 50 pounds per item.
Passengers are allowed to bring bicycles and sports equipment on Via Rail trains.
Food and Drink Service
Via Rail provides food and drink service for purchase, offering a variety of dining options to passengers.
Payment
Via Rail accepts various payment methods, including credit cards, Interac Online, and pre-paid credit cards. It is advisable to check the website for the most up-to-date information on accept able payment methods.
Facilities for Passengers with Special Needs
Via Rail is committed to providing accessibility for all passengers. The trains are equipped with accessible restrooms, seating areas, and boarding assistance for passengers with mobility issues. Additionally, staff members are trained to assist passengers with disabilities to ensure a comfortable travel experience.
E-ticketing
Via Rail offers the option to use the e-ticketing system, allowing passengers to present their ticket on a mobile device without the need for printing.
1. Which train takes the least time?| A．The 12:20 am one. | B．The 4:20 am one. | C．The 6:02 am one. | D．The 8:00 am one. |
| A．$60. | B．$96. | C．$112. | D．$120. |
| A．It serves food and drink for free. | B．It is developing a new e-ticketing system. |
| C．It doesn’t allow sports equipment on board. | D．It provides convenient access to the disabled. |
