相关试卷

About 5 billion tonnes of plastic has gone to landfill since the 1950s, and recycling efforts have only tackled 9 percent of what we have produced. With current techniques, plastics degrade in each recycling round and end up in landfill after only a few cycles of the process.

John Hartwig at the University of California, Berkeley, and his colleagues had previously developed a process that broke down waste plastic into its constituent parts, but it relied on the expensive metal catalysts (催化剂). Now, his team has discovered an improved process that works on both polyethylene, from which most plastic bags are made, and polypropylene, which is used to make harder objects. And it relies only on catalysts considered so common that they are essentially "dirt", says Hartwig.

In experiments, the team used two catalysts to turn a mixture of polyethylene and polypropylene into original chemicals for plastic with the efficiency of nearly 90 percent. However, Hartwig warns that there are still many hurdles to overcome, and that the process has only been tested in the presence of a small number of common additives (添加物). "There will be additives that will affect the catalysts," he says. This may mean having a way to separate those additives or finding catalysts that are resistant to them.

Cressida Bowyer at the University of Portsmouth, U.K., says that even if we have a process that can split waste plastic into constituent parts and withstand additives, other issues remain. The degree of poisonousness and disposal of the catalysts and additives must be considered, she says. "These could outweigh any perceived benefits of recycling technologies. Recycling should not be seen as any kind of solution to maintaining or increasing production of single-use and unnecessary plastics and continuing the current prevailing take-make-waste culture," she adds.

At about 14, she set her sights on studying medicine in the UK. "Despite being a student from a foreign country, I achieved A-levels in all my subjects, considered suitable for medicine," she says. Now as a consultant surgeon at one of the busiest major trauma (创伤) units in England, Elena has spoken of her successful career and the challenges she has encountered as a female doctor including sometimes having to remind patients suspicious of her that "I am the surgeon".

Elena's main job is working with the major trauma team, but is also involved in the team dealing with patients that have severe surgical issues. "When I'm a consultant, I have a position of responsibility not only towards my patients, but also towards the team that I cooperate with," she says. Working hard, she has never experienced prejudice from other male surgeons, who show great respect for her.

Elena does not shy away from the fact that being a woman has sometimes felt like a disadvantage. "Find what you love doing day after day, because your professional career is a long time, and it takes a lot — probably like 20 or 30 years of your life. Therefore, it's of great significance to do what you are fond of and then just go for it," she says.

Wayfinding

Wayfinders are stationed at hospital entrances and greet each visitor/patient along with providing wheelchair assistance. Wayfinders must be friendly and have good communication skills 2-hour shifts are available Monday-Friday between 8:00 a.m.-4:00 p.m. Due to the standing nature of this position, 4 hours will be rewarded for 2 hours of Wayfinding service.

Floaters

Floaters help deliver patient mail and newspapers. Assignments can change each shift depending on needs of the department, Volunteers are assigned to the Volunteer Office for one 4-hour shift per week Monday-Friday between 9:00 a.m.-4:00 p.m.

Patient Transport

Patient Transport volunteers are responsible for discharging patients and helping the patient transport staff. This is a great opportunity for students to see all areas of the hospital and get clinical exposure. Shifts are available seven days a week anytime between 8:00 a.m.-8:00 p.m.

Applying to the Summer Volunteen Program

Step 1: Sign up for an Information Session on zoom. Sign-ups are on a first come, first serve basis.

Step 2: Submit all required application forms online for review and approval.

Step 3: Attend one In-Person Orientation (培训). There is only one session, and we will not have make-up sessions.

step 4: Complete 50 volunteer hours by August 31, 2025.

Noah and Emma got married last year. After their baby Oliver was born, they were very delighted. However, that soon changed.

One night, Emma accidentally dropped a glass bowl when Oliver was just nearby, but he didn't react or turn around to the big sound of glass breaking. The next day, the hospital confirmed Oliver was born deaf. The couple were so sad. Weeks later, Oliver got his first hearing aid. He could now hear! Noah and Emma were excited.

Three years passed; it was time to send Oliver to school. Emma and Noah often described how great it would feel to be in a class full of friends with a teacher in the front. Oliver began to look forward to his upcoming school life. However, Oliver returned home that day, crying, "I don't want to go to school. I have no friends." The following days, Oliver came back home, still sad. Emma and Noah were anxious.

One Friday, Oliver's teacher, Sarah, met the couple. "Oliver seems shy. He never plays with his classmates. And he doesn't talk to me although I try talking to him. He's afraid that he's different and that his classmates will laugh at him because of his deafness," she said.

Emma and Noah were heartbroken and worried. After chatting with the couple, Sarah learned Oliver's sixth birthday was on Monday of the next week. Then, she made a secret plan for Oliver.

After school that day, Sarah sent a message to the parents of all the children in her class. In the message, she told them about Oliver's trouble. And she wanted them to encourage and ask their kids to come to school on Sunday to prepare a birthday party for Oliver: to decorate the classroom, prepare a birthday cake, etc. Then, Sarah put down her cell phone, wondering whether any parents would support it.

注意：（1）续写词数为150左右；

（2）请按如下格式在答题卡的相应位置作答。

Soon, her phone rang and she received a message.

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Oliver arrived at school and pushed the classroom door open.

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（1）健康的重要性；

（2）科学减重的方法。

肥胖 obesity

注意：（1）词数为100左右；

（2）请按如下格式在答题卡的相应位置作答。

Dear fellow students,

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School Health Club

Guizhou's matcha (抹茶) production volume accounts for one (five) of China's total.

March signals tea-harvesting season in the tea garden (own) by Guizhou Gui Tea Group Co in Jiangkou county. The company is leading producer of match a raw materials. With (full) automatic intelligent production lines, about 90% of production procedures are done by machines, significantly (increase) production efficiency. Established in 2012, the company is devoted to becoming modern and intelligent. The company has 140,000 top-level ecological tea gardens, some of are organic certified by Ecocert and has applied 13 patents (专利) in the past three years and has so far established 9, 800 hectares of tea planting area that meets the standards of the European Union.Gui Tea's matcha (export) to more than 10 countries and regions such as the US and Canada in recent years, and is applied in baking, beverage, medicine and cosmetics.

In the future, the company will improve its modern logistics system and mechanize tea planting and seek (far) cooperation with upstream and downstream (company) to cope with the challenges brought about by the global economic crisis.

Sometimes this bad habit was not3 to just reading books either. I also tried to skip ahead in my life and4 what to do months and even years from now instead of5 each day as it is intended. I knew that the book of my life wasn't done yet and that I had many6 left to go.7, that didn't stop me from trying to write the ending half-way through. At times, I would jump ahead without8 and try to solve every potential problem before it happened. Life, however, doesn't work like that. It loves to9 us, and you never know what new problem or opportunity each new day will bring.

Life, however,10 to follow our rushed plans. Recently, when I found myself returning to that bad habit of rushing ahead and living in the11 again, I felt a voice that gently told me I needed to "live one day at a time". When I heard those words, I12 , turned the book of my life back to the13 page, and thanked God for today.

We have to14 the book of life stroke by stroke (一笔一划地) , so that the journey of our lives will ultimately15 its beauty. Let's write our story patiently — because every single page matters.

Hobbies provide an escape, helping you relax and clear your mind. When exploring potential hobbies, it's important to reflect on why you want an activity. Do you want to feel mentally engaged, distracted, or socially connected? There's no single perfect hobby for everyone.

Once you've identified a potential hobby, it's wise to start small. Jumping into a new activity with too much enthusiasm can lead to exhaustion or disappointment. For example, if you' re curious about paintball, try joining a local Meetup group for an outing or two.This approach allows you to test the waters without feeling pressured.

Humans are naturally curious. However, in today's busy world, we often forget to embrace new opportunities. Therefore, the next time someone hands you a flyer or invites you to an event, take the chance.

Finally, don't underestimate the power of revisiting childhood passions. Think back to what you wanted to be when you were a child. That dream could point you toward a fulfilling hobby. Revisiting childhood activities like drawing, building models, or collecting items can also be a great starting point. They evoke nostalgia and joy, reviving your enthusiasm for hobbies.

A. Take small steps initially.

B. Here are useful suggestions to help you get better.

C. Hobbies should always fit with your current skills.

D. These familiar activities often make it easier to div e in.

E. Experts offer some tips on how to discover your hobbies.

F. Another important aspect is to stay open to new possibilities.

G. Reflecting on what your life lacks can also guide your choice.

The improvement by boys was particularly noticeable in maths, where the data analysis found that greater confidence was strongly associated with higher scores in the quadrennial tests conducted for the Trends in International Mathematics and Science Study (TIMSS).

Across both year groups in maths and in year 9 science, the researchers found that significantly higher percentages of boys reported being very confident on statements related to maths and science, while a large percentage of girls said they were not confident. In year 9 maths, 21% of boys and 9% of girls reported they were very confident, while 38% of boys and 60% of girls reported they were not confident. In 2024, boys consistently outperformed girls at both grades in maths, physics, economics and statistics.

TIMSS uses the number of books at home as an index (指标) for socioeconomic status. Stubborn gaps remain between disadvantaged pupils and their better-off peers. The researchers found a significant gap between pupils who had access to a large number of books at home and those who did not. In year 9 science, pupils in households with fewer than ten books at home scored 461, compared to 601 for those in households with over 200 books at home.

"Those who have fewer educational resources at home need extra funds in order to access the same opportunities to learn compared with their better-resourced peers," said Prof Mary Richardson, the study's co-principal investigator.

In the lab, the researchers first take cells from the leaves of a young plant. These cells are cultured in liquid medium for two days, then moved to another medium which contains nutrients and two different hormones (激素). By adjusting the hormone levels, the researchers can tune the physical and mechanical qualities of the cells. Next, the researchers use a 3D printer to shape the cell-based material, and let the shaped material grow in the dark for three months. Finally, the researchers dehydrate (使脱水) the material, and then evaluate its qualities.

They found that lower hormone levels lead to plant materials with more rounded, open cells of lower density (密度), while higher hormone levels contribute to the growth of plant materials with smaller but denser cell structures. Lower or higher density of cell structures makes the plant materials flexible, helping the materials grow with different wood-like characteristics. What's more, it's to be noted that the research process is about 100 times faster than the time it takes for a tree to grow to maturity!

Research of this kind is ground-breaking. "This work demonstrates the great power of a technology," says lead researcher, Jeffrey Berenstain. "The real opportunity here is to be at its best with what you use and how you use it. This technology can be tuned to meet the requirements you give about shapes, sizes, flexibility, and forms. It enables us to ‘grow' any wooden product in a way that traditional agricultural methods can't achieve."

In 2018, I came to China for the first time to study at Jiangxi University of Finance and Economics (JUFE) and actively participated in the university's public welfare activities. During these events, local people often called me "Yang Lei Feng", which I later learned means "foreign Lei Feng".

Curious, I looked him up online and discovered a young soldier known for his selflessness and dedication to helping others. The more I read, the more I saw how his values aligned with the principles I aspired to uphold.

Inspired by Lei Feng's spirit, I established the Lei Feng International Volunteer Association on March 5, 2021 — Lei Feng Day — alongside young people from different countries at JUFE. Our mission is to support children with special needs, assist the elderly, promote environmental awareness, empower through education, and foster cross-cultural understanding. Through these efforts, we continue to keep Lei Feng's spirit alive in a modern, global context.

On Lei Feng Day in 2025, I took a bold step to spread his legacy beyond China by launching the global "Learn from Lei Feng" campaign. We celebrated the day in five countries — Bangladesh, Ghana, Kenya, Algeria, and China — through discussions on his biography,charity programs, and community service activities.

What began as a vision to promote his values internationally has since grown into a global movement, now spanning 15 countries. Our efforts not only strengthen cross-cultural bonds but also contribute to building a more compassionate and service-oriented world.

For me, this campaign represents a full-circle moment. From discovering Lei Feng's story online to now inspiring future generations to follow in his footsteps, I am reminded of how one person's story can spark a movement.

Museum of Bad Art

Boston, Massachusetts

The mission of MOBA is to collect, exhibit and celebrate art that will be shown in no other venue. The museum's new location, in the Dorchester Brewing Co., assumes visitors would need a drink after seeing this work. Highlights include Lucy in the Field with Flowers, a painting found in 1993 leaning against a trash barrel, waiting for garbage collection.

International Tennis Hall of Fame

Newport, Rhode Island

The International Tennis Hall of Fame was built on the site of the first United States National Lawn Tennis Championships in 1881. A highlight is a King Court for "court tennis", first played by monks and kings dating back to 1538. There are only 10 such courts in North America, as they cost approximately $3 million to make, but visitors to the museum can rent it and play.

National Comedy Center

Jamestown, New York

Based in Lucille Ball's hometown, this museum features exhibits such as Jerry Seinfeld's puffy shirt and Joan Rivers's card catalog of 65,000 jokes. Before entering, visitors choose what they find funny, and the data is collected on a digital chip they wear on a wrist so that the comedy content is customized based on their personal taste.

Spam Museum

Austin, Minnesota

Dedicated only to the much-mocked brand of precooked meat, this free 14, 000 - square-foot museum tells the history of the Hormel company, the originator of Spam, and its mark on the world. Highlights include Monty Python's famous "Spam" sketch and free "samples" given out by volunteer guides.

It was a sunny May morning in 2023. Michael Armus, a 69-year-old retired car painter, entered Bank of the West to deposit a check, feeling something wrong. Normally, bank workers greeted him cheerfully and laughed at his simple jokes.

But today, none of the tellers acknowledged him. Nor did the bank's manager, who sat at his desk with his head down and seemed to be whispering into his telephone. As Armus approached the teller windows, he noticed the three employees had similar worried looks on their faces. He heard one teller whisper to another, "He's got a note."

Armus looked to his left and noticed a man at another window with his striped T-shirt pulled up to partially hide his face. "This is a robbery," Armus thought.

He heard the man say, "I don't want to hurt anybody." Minutes earlier, the man had passed a note to the teller demanding cash and saying he had a gun. When his shirt slipped slightly, Armus recognized him — Eduardo, who often read Bible stories to passersby on a street corner. Suddenly, instead of being frightened, Armus felt compassion for him, and a thought popped into his head: Maybe I can help.

He walked over to the man and calmly asked, "What's wrong? Don't you have a job?"

Shocked, Eduardo looked at Armus and exclaimed (呼喊), "There is nothing in this town for me. Nothing!" Then, with tears streaming down his face, he said, "I just want to go to prison."

Armus recalled his own troubled past. "I've been lost too," he said gently. "Let's talk outside." To everyone's surprise, Eduardo agreed.

Outside, Armus hugged Eduardo as he sobbed. Police soon arrived, aiming rifles (步枪) until they confirmed Armus was innocent. Eduardo, charged with attempted robbery, had no real gun. Officers praised Armus for calming the crisis.

"Love overcomes all," Armus later said. He often helped the homeless, carrying blankets in his car.

注意：

1.续写词数应为150个左右；

2.请按如下格式在答题卡的相应位置作答。

Armus kept his hand on Eduardo's shoulder. "Everyone deserves hope," he whispered.

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Months later, Armus spotted a familiar figure on the street corner.

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1.艺术节的举办时间，地点；

2.活动的安排。

注意：

1.词数80左右；

2.可以适当增加细节，以使行文连贯。

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As we know, China has a long and glorious history of construction. Dujiangyan is the oldest man-made water system in the world, and wonder in the development of Chinese science. Built over 2,200 years ago in what is now Sichuan Province in Southwest China, this amazing engineering (achieve) is still used today.

In ancient times, the region in which Dujiangyan now stands suffered from regular floods (cause) by the overflow from the Minjiang River. To help the victims of the flooding, Li Bing, the region governor, together with his son, decided (find) a solution. Li designed a series of channels at different levels along Mount Yulei that would take away the floodwater while leaving the river flowing naturally. Better still, the extra water could be directed to the dry Chengdu Plain, making it (suit) for farming.

Once the system (finish), no more floods occurred and the people were able to live (peaceful). Today, Dujiangyan is admired by scientists from around the world because of one feature — Unlike modern dams the water is blocked with a huge wall, Dujiangyan still lets water flow through the Minjiang River naturally. This (able) the ecosystem and fish populations to exist harmony.

Years later, I3 knitting in Madison, Wisconsin, where I was in graduate school and feeling the4 of my studies. One day, as I cycled to school past a knitting store, I stopped and went inside. I was not even sure what I was5. The mittens (手套) in the display area6 me, and I determined that I would learn to knit these sweet mittens. Too7 a project for a beginner, but the store8 were kind and patient with my daily visits for instructions.9, the mittens saved my soul in that tense studies and other life events of love and loss.

My busy fingers wrapped in yarn have long10 my anxiety during medical appointments and hospital stays for friends and family. Knitting scarves for my daughter when she went away for university also brought me11 as I imagined every stitch of love wrapped around my now-adult child — as once my arms12 her when she was young.

My mother's13 is great, but the major life lesson she taught me through knitting is that there is a step-by-step process of building, tearing down and14. It requires15 and belief that stitches that are cast off can always find their way back on.

Are you looking for a way to go through life just a little happier? The truth is, the path to happiness lies in finding your core values.Live authentically and presently in the moment and you'll find the happiness you seek. Keep reading for tips to find a happier life.

Identify your core values.

Boost your overall happiness by acting with your values. Stop for a minute and think about what's most important to you. Not material possessions, but the people, circumstances, and feelings that make you feel like your life has meaning.As long as the things you do and the decisions you make follow along with those core values, you'll feel at peace.

Set realistic goals for yourself.

Achieve small goals to trigger a release of feel-good hormones. When you accomplish something, you naturally feel good about yourself.Break big goals into smaller goals to keep those good feelings coming.

Exercise to release feel-good chemicals in your brain. The neurochemicals and hormones your brain releases when you exercise automatically lift your spirits and put you in a better mood — and the effect tends to last for a while after you've stopped exercising. The more active you are throughout the day, the more happy hormones your brain will produce to keep your mood.

Engage with nature.

Spend time outdoors to unleash a kinder, happier you. Simply being in nature helps reduce stress and increase your ability to connect with others — both of which contribute to a happier, more positive outlook..

A. Keep your body active.

B. And they reflect in everything you do.

C. Keep your mind active with daily challenges.

D. These are the things you want to order your life around.

E. Spend your time hiking, journaling, reading, and meditating.

F. This is partly because your brain releases hormones that cause you to feel good.

G. You'll also find that you're healthier if you spend a little time each week in nature.

These are the questions the cartoonist and writer Amy Kurzweil brings to Artificial: A Love Story, a graphic memoir that takes a heartfelt look at the technological dimensions of human connection. Kurzweil's perspective and storytelling shows her close relationship with her father, computer scientist and inventor Ray Kurzweil, who has long predicted the eventual merging of human and machine.

At its core, Artificial is an intimate story about how we preserve the bonds of family and the meaning of heritage across physical and temporal distances. Kurzweil narrates the life of her grandfather, Fritz "Fred" Kurzweil, who died when Ray was only 22.

Now Fred is coming back to life, in a way, through AI. His memories, pieced together through personal letters and documentation, have become data, fed to an algorithm (算法) for Ray Kurzweil's latest invention: Fredbot, a chatbot that will write in the voice of his father. Amy Kurzweil, who was tasked with gathering and digitizing thousands of old, often handwritten documents, brings a keen eye to her illustrations, contrasting the ambitious goals of her father's project and the mundanity of sifting through (仔细筛选) file after file, box after box, in a family storage unit. Throughout the narrative, she thinks about the meaning not only of these materials but also of the digital relics of our everyday lives.

Human presence is powerful, yet it is also fleeting. It can arise through the technologies we use to connect with others but is subject to the mistakes of memory and perspective. Kurzweil expresses a growing understanding of her family's legacy and how it has influenced her life as an artist and her relationships.

Most plants need to be located near a window for light. Often this means taking up limited bookcase space. PICO is different because, while setting it on a tabletop is an option, it can also mount to vertical (垂直的) surfaces. In fact, it comes with a magnetic mount (支架), which could be used on a refrigerator or desk, plus a standard wall mount and Velcro option for mounting to windows, mirrors and other surfaces.

After the unit is fully constructed, all you have to do is add a bit of soil and a few of your favorite seeds. There is no membership or seed pod to purchase. Watering is stable and consistent with a water container and easy fill spout (注水口). A transparent window in the front allows you to easily see when more water is needed, typically about once each week. From there, the system automatically absorbs water from the container through the soil, using an on-demand system that restores moisture as the soil dries out.

With location and watering figured out, the last major aspect for successful indoor growth is proper lighting. PICO is equipped with a multi-spectrum (多光谱) growing light that conveniently extends from the small planter design. As your plant grows, the light extends up one foot higher for consistent light.

PICO is the newest addition to the urban gardening product line from Altifarm Enverde, the company that previously released two larger versions of in-home garden systems. While PICO is not intended to provide high quantities of food, its automatic functions and placement versatility make it an option for growing readily available herbs, visually pleasing succulents, or fragrant mini roses.