1 . Around a third of human-generated greenhouse gas emissions come from the global food system, and lost or wasted food is known to contribute to some amount — but it has never been clear to exactly what degree. Now, by following specific foods through their entire life cycle, researchers have determined just how much this wasted food adds to emissions during harvest, transportation and disposal.
For a study in Nature Food, Xunchang Fei and his teammates used 164 countries’ food supply data from 2001 to 2017 to estimate emissions across 54 food products and four categories: cereals (谷物) and beans; meat and animal products; vegetables and fruits; and root and oil crops.
About a third of food is lost during harvest, storage and transportation or wasted by consumers. The team found this food was responsible for about half of total emissions from the global food system. And four countries, including China, the US, India and Brazil, contributed to 44.3 percent, mainly owing to their dietary habits and large populations. Of the four food categories, meat and animal products were the source of almost three quarters of emissions that occurred throughout the supply-chain stage involving food loss.
The study also found that emissions varied from countries to countries. For instance, developed countries’ advanced waste-treatment technologies could create fewer emissions. Such details showed how “different countries should set different goals for the reductions of food loss and waste,” Fei said, “such as reducing meat production in some areas, and switching from landfills to composting (堆肥) processes in others.”
Prajal Pradhan, an expert in food system, noted that the United Nations Sustainable Development Goals aimed to halve food waste in the coming years. Based on this study, he said emissions could decrease if high-income countries could focus on saving food thrown away by consumers, and low-and-middle-income countries could prioritize avoiding food loss during harvest, processing, storage and transport.
1. What problem can lost or wasted food lead to according to paragraph 1?A.Soil pollution. | B.Worldwide starvation. |
C.Energy shortage. | D.Greenhouse gas emissions. |
A.By giving examples. | B.By analyzing statistical data. |
C.By stating arguments. | D.By explaining theoretical knowledge. |
A.Cereals and beans. | B.Root and oil crops. |
C.Meat and animal products. | D.Vegetables and fruits. |
A.The United Nations should cut food waste in half. |
B.Middle-income countries could focus on food waste. |
C.High-income countries could prioritize avoiding food loss. |
D.Different countries should have different priorities to reduce emissions. |
2 . At 111, Dr Edith Kaufmann was the second oldest person in the UK. I met her when I
At first sight, I was
She was also
As I
A.studied | B.volunteered | C.relaxed | D.lectured |
A.cooperation | B.attention | C.friendship | D.encounter |
A.struck | B.embarrassed | C.stressed | D.upset |
A.sharp | B.kind | C.bossy | D.helpful |
A.started | B.enjoyed | C.needed | D.lacked |
A.explaining | B.confusing | C.recalling | D.forgetting |
A.artistic | B.literary | C.capable | D.active |
A.repeatedly | B.precisely | C.worriedly | D.heartily |
A.held | B.shook | C.raised | D.clapped |
A.devoted | B.restricted | C.addicted | D.introduced |
A.missed | B.called | C.visited | D.pushed |
A.praise | B.wisdom | C.greeting | D.thanks |
A.succeeded | B.dreamed | C.failed | D.progressed |
A.provided | B.appreciated | C.expected | D.created |
A.matters | B.differs | C.exists | D.happens |
3 . I’ve spent much of my life dealing with written and spoken words. Now I’m a technologist making use of natural language processing for human good. Given that I work in artificial intelligence (AI), I’m realizing something dangerous happening. Machines are ruining the way we communicate.
AI voices are normalized and yet cold, no matter which accent (口音) you set your Siri or Amazon Alexa into. It’s difficult to normalize language to be inoffensive because sometimes we do make people feel uncomfortable or even make them annoyed. Yet this is exactly what we’re asking artificial intelligence to do for us on a billion - person scale. Once these rules are carried out by machines, they’re unavoidable and create much bigger issues.
We notice that there is an active desire to only include standardized language in AI - powered tools in an attempt to avoid including potentially harmful or offensive language. And these AI-powered tools are exactly what we use to complete our thoughts almost at any given time. They are everywhere — in our emails, word processors, and web pages. The machines are pushing us into a common tongue, and we accept it as a matter of convenience. But what’s the cost? We’re trading uniqueness and accuracy for convenience. We’re also handing the power of acceptable speech to machines not people.
In the real world, people don’t communicate like a Wikipedia (维基百科) article. We use tone (语气), humor and facial expressions. We can tell where people were born based on their accents and wording. Humans are truly unique, and our communication is constantly changing. So we should demand AI systems that promote individuality and uniqueness. We should demand to know how AI is developed and the data used to build it. Because we all deserve this.
1. What is the function of paragraph 1?A.To illustrate the function of communication. |
B.To introduce the impact of AI on language. |
C.To share the author’s working experience. |
D.To stress the importance of AI on language processing. |
A.Hateful | B.Valuable | C.Harmless | D.Beneficial |
A.AI voice should be legalized. | B.AI voice should be modernized. |
C.AI voice should be standardized. | D.AI voice should be personalized. |
A.Praising. | B.Humorous. | C.Concerned. | D.Objective. |
4 . Climbing, I once thought, was a very manly activity, but as I found my way into this activity, I came to see that something quite different happens on the rock.
Like wild swimming, rock climbing involves you into the landscape. On the rock, I am fully focused. Eyes pay close attention, ears are alert, and hands move across the surface. Unlike walking, where I could happily wander about absent-mindedly, in climbing, attentive observation is essential.
As an arts student studying English literature, I discovered a new type of reading from outdoor climbing. Going out on to the crags (悬崖), I saw how you could learn to read the rocks and develop a vocabulary of physical movements. Good climbers knew how to adjust their bodies on to the stone. Watching them, I wanted to possess that skillful “language”.
My progress happened when I worked for the Caingorms National Park Authority.Guiding my explorations into this strange new landscape was Nan Shepherd, a lady too. Unlike the goal-directed mindset of many mountaineers, she is not concerned with peaks or personal achievement. Shepherd sees the mountain as a total environment and she celebrates the Caingorms as a place alive with plants, rocks, animals and elements. Through her generous spirit and my own curiosity, I saw that rock climbing need not be a process of testing oneself against anything. Rather, the intensity of focus could develop a person into another way of being.
Spending so much time in high and st ony places has transformed my view on the world and our place in it. I have come into physical contact with processes that go way beyond the everyday. Working with gravity, geology (地质学), rhythms of weather and deep time, I gain an actual relationship with the earth. This bond lies at the heart of my passion for rock climbing. I return to the rocks, because this is where I feel in contact with our land.
1. What does the writer find important in climbing?A.Balance. | B.Concentration. |
C.Determination. | D.Perseverance. |
A.Climbing goes together with nature. |
B.Every mountain top is within reach. |
C.The best climber is the one having fun. |
D.You can not achieve high unless you change. |
A.Time. | B.Transformation. | C.The world. | D.My view. |
A.It challenges her to compete with men. |
B.It allows her a unique attitude toward rock. |
C.It teaches her how to possess a new language. |
D.It makes her feel connected with the earth. |
5 . Some years ago, I was stuck on a crosstown bus during the rush hour. The bus was full of cold, tired people
As the bus approached Seventh Avenue, the driver’s words came from the speaker. “Folks,” he said, “I know you’ve had a(n)
Everyone burst out laughing, their faces shining with
At the next stop, just as
Occasionally we may sink into a grey world, but someone can
A.pleased | B.puzzled | C.impressed | D.annoyed |
A.waved | B.smiled | C.roared | D.shot |
A.clue | B.seat | C.ride | D.choice |
A.kindness | B.function | C.courage | D.safety |
A.hard | B.average | C.important | D.fruitful |
A.work out | B.show up | C.help out | D.check in |
A.moments | B.troubles | C.errors | D.tips |
A.forget | B.remember | C.keep | D.throw |
A.anger | B.stress | C.joy | D.pride |
A.attraction | B.existence | C.admiration | D.appreciation |
A.ordered | B.promised | C.requested | D.reported |
A.chatting | B.coming | C.sitting | D.exiting |
A.repeated | B.designed | C.announced | D.updated |
A.access | B.explore | C.balance | D.brighten |
A.However | B.Additionally | C.Actually | D.Finally |
6 . The University of Arkansas offers an exciting campus life that is culturally, intellectually and socially enriching. Every semester offers opportunities to attend musical performances, theater productions, art exhibits, poetry reading and hundreds of other events.
Registered Student OrganizationsOn our campus, you will find 380 Registered Student Organizations (RSOs), from special interests to professional groups: It is easy and rewarding to get involved. Students are able to create, budget, plan and govern their own organizations and events. Current RSOs can be academic, professional or grounded in special interests. And if you don’t find one you like, you can even start your own.
Arts and CultureFrom art galleries and symphonies to film series and rock concerts, the University of Arkansas has a multitude of events and facilities to enrich your educational experience. The Multicultural Center exists to enhance the University of Arkansas academic experience by preparing students for life in a diverse society.
Center for Community EngagementThe Center for Community Engagement (CCE) offers service programs for students, student groups and staff. Programs include food programs, mentorship and several volunteer opportunities through the Volunteer Action Center. CCF. serves as a catalyst (催化剂) between the campus and the community through the core values of being Relationship Focused, Student Driven and Service Minded. It also supports a network of student leaders, local agencies and University of Arkansas departments to create sustainable solutions through leadership experience, collaboration and service.
1. What can you do if you get involved in RSOs?A.Get a financial reward. |
B.Run organizations on your own. |
C.Carry out events as required. |
D.Conduct studies with professors. |
A.It serves students and their parents. |
B.It enriches students’ volunteer experiences. |
C.It connects the campus and the community. |
D.It creates solutions with support from the Internet. |
A.Academics. | B.Student Life. |
C.Cost & Aid. | D.School Visits & Fairs. |
7 . When I was young, I used to hate running. In fact, I wouldn’t have become a(n)
So she picked it up again, and after about a year, I started to join her at the
But on the race day, there I was.
The gun went off. Thousands of runners
After another minute, I saw the three kilometer
I
Then I looked up and saw the clock. The
A.visitor | B.expert | C.coach | D.runner |
A.competitive | B.common | C.brave | D.anxious |
A.hated | B.trained | C.missed | D.admired |
A.track | B.race | C.field | D.stadium |
A.hesitated | B.puzzled | C.cared | D.brought |
A.slipped away | B.went away | C.pushed forward | D.came over |
A.mildly | B.shallowly | C.gently | D.heavily |
A.running | B.bending | C.reaching | D.pacing |
A.symbol | B.mark | C.pattern | D.campaign |
A.rounded | B.found | C.made | D.got |
A.stuck | B.crowded | C.provided | D.seated |
A.enjoy | B.start | C.keep | D.stop |
A.seconds | B.titles | C.sounds | D.competitors |
A.also | B.actually | C.just | D.unfortunately |
A.got | B.came | C.stayed | D.straightened |
8 . Josefa Marin went to New York from Mexico in 1987, supporting her daughter back home with the $140 a week she earned at a sweater factory. With that small income, she had to collect recyclables, trading in cans for five cents each.
When the clothing factory closed down in the late 2000s, she became a full-time recycler, picking up cans and bottles to make ends meet.
Marin’s story is not unique. Millions around the world make a living from picking through waste and reselling it — a vital role that keeps waste manageable. In New York City, the administrative department collects only about 28 percent of the cans that could be recycled. Rubbish collectors, however, keep millions of additional recyclables out of landfills every year.
Yet collectors are ruled out by government policies. The United States Supreme Court in 1988 stated that household garbage is public property once it’s on the street. That enables police to search rubbish for evidence, but that protection hasn’t always been extended to recyclers. And in places like New York City, which is testing city-owned locked containers to hide garbage from rats, containers are made clearly inaccessible for collectors.
“There’s value in the waste, and we feel that value should belong to the people, not the city or the corporations”, says Ryan Castalia, director of a nonprofit recycling and community center in Brooklyn.
Recognized or not, waste pickers have long been treated with disrespect. Marin recalls an occasion when someone living next to a building where she was collecting cans threw water at her. “Because I recycle doesn’t mean I am less of a person than anyone else,” she says. It’s a pity to see that the government doesn’t stand by the garbage collector’s side, either.
Fortunately, some governments are starting to realize that protecting the environment and humanity go hand in hand. Brazil classified waste picking as an official occupation in 2001. In 2009, Colombia’s government granted the right to collect valuable garbage. The U.S. is slowly catching on too. After all, to the government, the garbage is garbage, but to the collectors, it’s something they make a living on.
1. What is the author’s purpose of telling about Marin?A.To highlight waste collectors’ role. |
B.To reflect the unemployed’s hardship. |
C.To praise her devotion to her daughter. |
D.To show the seriousness of unemployment. |
A.By citing reference. | B.By contrasting. |
C.By giving definitions. | D.By cause-effect analysis. |
A.No job is noble or humble. | B.Business is business. |
C.The early birds catches worms. | D.One good turn deserves another. |
A.Who owns our garbage? | B.How can we end poverty? |
C.Who takes blame for waste? | D.How should we recycle rubbish? |
9 . A driverless train took its first trip around Hamburg, Germany in 2021 and may greatly improve transportation in the city. Acknowledged as the world’s first, the train created by Siemens Mobility and Deutsche Bahn (DB) officially went into service in December.
This is part of a large modernization project for the city’s S-Bahn urban rail. There were no changes to the tracks, as the autonomous (自动的) trains run on the same network as the current trains that have drivers operating them.
“The railroad has arrived in the digital future and Digital Rail Germany may become a reality. With automated rail operations, we can offer our passengers a significantly expanded and improved service,” said Dr. Richard Lutz, CEO of DB. “The new trains can transport up to 30 percent more passengers and operate on time, and they will be more energy-efficient. They are also encouraged for environmental protection reasons.”
The trains receive signals via radios. There will be drivers present when there are passengers on board but they will only supervise (监督) the run and the passengers. There are now plans to digitize Hamburg’s S-Bahn system entirely by the end of the decade and the government has already decided to put money into new trains and infrastructure improvements.
Autonomous transportation technology is being used in taxis by Waymo, which started as the Google self-driving project in 2009. Other companies that are working on driverless cars include Tesla,GM, Nissan, and Zoox. These cars have to find their ways on roads with the help of GPS technology but driving on a track is much simpler and safer. “The new technology has already been officially approved and, since it features open interfaces (接口), it can immediately be used by operators worldwide for all types of trains,” said Dr. Roland Busch, CEO of Siemens. Maybe it’s time for the new autonomous revolution.
1. What’s special about the new trains created by Siemens Mobility and DB?A.They share tracks with traditional ones. |
B.They use new driverless track systems. |
C.They make long-distance trips much safer. |
D.They still require human drivers’ operation. |
A.The new trains greatly change the German lifestyle. |
B.The digital railroad is spoken highly of by passengers. |
C.The new trains benefit both people and the environment. |
D.The digital railroad has promoted the development of tourism. |
A.Worried. | B.Favorable. | C.Doubtful. | D.Disapproving. |
A.Operators have responsibility for ensuring fully autonomous driving. |
B.Germany’s design of trains needs to be further improved. |
C.American companies see an increasing demand for self-driving taxis. |
D.The digital technology has a big potential market. |
10 . With such a strong artistic heritage, it’s no surprise that England knocks it out of the park when it comes to world-class art galleries. These are the galleries you need to add to your must-visit list.
Royal Academy of Arts (RA), London
Not your standard gallery, the Royal Academy of Arts is led by artists to promote not just the appreciation of art, but its practice. It is world-famous for hosting some exhibitions that get everyone talking. Besides, what sets the RA apart is its engagement with the public through participatory experiences, allowing visitors to not only view art but become part of it in innovative ways.
Sainsbury Centre for Visual Arts, Norwich
Sitting on the edge of the University of East Anglia’s campus, the Sainsbury Centre holds a collection of remarkable works of art spanning over 2,000 years. Inside the seminal Norman Foster building, you’ll find artworks from around the world, including some stunning pieces of European modern art by Degas, Francis Bacon, and Alberto Giacometti.
Yorkshire Sculpture Park, West Yorkshire
Tearing up the rulebook when it comes to how we traditionally view art, the Yorkshire Sculpture Park strives to break down barriers by showing works from British and international artists in the open air. Set in hundreds of acres of West Yorkshire parkland, you’ll see sculptures by some of the leading artists of the 20th century.
Whitworth, Manchester
After a sky-high £15 million development, the Whitworth is becoming one of the premier galleries in the north of England. Making full use of its picturesque park setting, the gallery has a beautiful art garden and a sculpture terrace (露台), all waiting to be explored. Inside the gallery, you can view an exciting programme of ever-changing exhibitions.
1. What is special about the Royal Academy of Arts?A.It offers interactive experiences. |
B.It displays works by senior artists. |
C.It occupies a vast space in the museum. |
D.It stages exhibitions in a traditional way. |
A.They are small in scale. | B.They offer outdoor settings. |
C.They feature long-standing works. | D.They host exhibitions on an annual basis. |
A.An art textbook. | B.An art student’s paper. |
C.A personal travel blog. | D.A travel guidebook. |