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题型:阅读理解-阅读单选 难度:0.65 引用次数:33 题号:21074401

At the age of 9, my father passed away. I often helped mum with the housework and changing the vacuum cleaner (真空吸尘器) bag and picking up things the machine did not suck up always drove me crazy. One day 20 years later, in 1978, I was doing chores at home alongside my wife. The vacuum cleaner was screaming, and worse still, I had to empty the bag several times. But for my wife’s comfort, I would have lost it just as I did many years ago. It was at that time that I decided to make a bagless vacuum cleaner. And I even imagined myself using it for the next weekend cleaning.

Easier said than done, of course. I didn’t realize that I would spend the next five years perfecting my design, a process that resulted in 5,127 different prototypes (设计原型). By the time I made my 15th prototype, my third child was born. By 2,627, my wife and I were really counting our pennies. By 3,727, my wife was giving art lessons for some extra cash, and we were getting further and further into debt. These were tough times, but with my family, I pulled through and each failure brought me closer to solving the problem.

I just had a passion for the vacuum cleaner as a product, but I never thought of going into a business with it. In the early 1980s, I started trying to get licensing agreements (许可协议) for my technology. The reality was very different, however. The major vacuum makers had built a business model based on the profits from bags and filters (滤网). No one would license my idea, not because it was a bad one, but because it was bad for business.

That gave me the courage to keep going, but soon after, the companies that I had talked with started making machines like mine. I had to fight legal battles on both sides of the Atlantic to protect the patents on my vacuum cleaner. However, I was still in financial difficulties until 1993, when my bank manager personally persuaded Lloyds Bank to lend me $1 million. Then my bagless vacuum cleaner was produced in large numbers. Within two years, the Dyson vacuum cleaner became a best-seller in Britain.

Today, I still embrace risk and the potential for failure as part of my life. “Go out and brainstorm new ideas.” I often tell myself.

1. From the first paragraph, we know that _____.
A.Dyson resolved to make a vacuum cleaner in memory of his father.
B.Dyson decided to develop an innovative vacuum cleaner for his wife while in his thirties.
C.Dyson was not a little annoyed when the vacuum cleaner went wrong.
D.Dyson didn’t lose the vacuum cleaner he used because his wife comforted him.
2. When was Dyson’s bagless vacuum cleaner mass produced?
A.In the early 1980s.
B.After his bank manager agreed to lend him $1 million.
C.After he was given a $1 million loan.
D.Before he obtained a patent on the product.
3. It can be inferred from the article that        .
A.Dyson dreamed of making a fortune when he began his invention
B.Dyson might owe his success to his family
C.Dyson had no confidence in his vacuum cleaner initially
D.Dyson’s vacuum cleaner was not licensed in the early 1980’s for its poor quality
4. According to the article, which of the following would most likely be Dyson’s motto?
A.More haste, less speed.
B.Silence is gold.
C.Without adventure, one can not know himself.
D.He who never failed might never succeed.

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阅读理解-阅读单选(约350词) | 适中 (0.65)
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【推荐1】A new type of rechargeable battery can rapidly produce charges in large quantities even at-70° Celsius, a temperature where the typical lithium-ion(锂离子) batteries that power many of today's devices don't work. Batteries that bear such extremely cold conditions could help build electronics that function in some of the coldest places on Earth or on other planets.

Inside lithium-ion batteries, ions flow between positive and negative electrodes(电极), where the ions are fixed and then set free to travel back through a substance called an electrolyte(电解质) to the other end. As the temperature drops, the ions move slowly through the electrolyte. The cold also makes it hard for ions to get rid of the electrolyte material that sticks onto them. As they cross the battery, ions must cast the matter to fit into the electrode material, explains a battery researcher at Fudan University. At-40℃, conventional lithium-ion batteries deliver about 12 percent of the charge they do at room temperature; at-70℃, they don't work at all.

The new battery contains a special kind of electrolyte that allows ions to flow easily between electrodes even in the bitter cold. The researchers also fitted their battery with electrodes made of organic compounds(有机化合物) rather than the typical transition-metal-rich materials. lons can flow freely in this organic material without having to get rid of the electrolyte material attached to them. So these organic electrodes catch and release ions more easily than electrodes in normal batteries, even at low temperatures, Dong says.

Because the ions flow better and connect more readily with the electrodes at low temperatures, the new battery keeps about 70 percent of its room-temperature charging capacity even at-70℃. Still, battery cells in the new design pack less energy per gram than standard lithium-ion batteries, says Shirley Meng, a material scientist in California. She would like to see whether a more energy-dense(能量密度高的) version of the battery can be built.

1. We can learn from Paragraph 1 that the new battery___________.
A.is applied to most of the electronicsB.can work longer than lithium-ion batteries
C.will replace lithium-ion batteries in the futureD.makes using electronics possible in extreme cold
2. Why is temperature the key factor for lithium-ion batteries to work well?
A.Because it's hard for ions to fit into electrodes at low temperatures.
B.Because electrolytes can't conduct electricity in the cold.
C.Because electrodes are unstable in too hot temperatures.
D.Because lions don't move at low temperatures.
3. What's the advantage of electrodes made of organic compounds?
A.Containing more ions.B.Making ions more active.
C.Making the battery rechargeable.D.Casting more electrolyte materials.
4. More efforts will be made towards improving the new battery so that it can ___________.
A.have a longer lifeB.carry more energyC.charge more quicklyD.be easier to get
2022-01-21更新 | 152次组卷
阅读理解-阅读单选(约360词) | 适中 (0.65)
文章大意:本文是一篇记叙文。文章讲述了Angelina Tsuboi如何通过技术创新解决现实问题,她的应用程序帮助了许多人,并展现了她对未来技术领域的探索和乐观的生活态度。

【推荐2】At just seven years old, Angelina Tsuboi discovered her passion for innovation. It all began with a simple game she programmed in her Los Angeles public school’s Grade 2class. Today , at18, the Grade 12 student’s initial curiosity has evolved into a deep-seated desire to use technology to decode (解码) real-world problems.

In 2021, she co-developed Megaphone, one of her first apps, to tackle unanswered post-class questions and poor communication about events and announcements. Her problem-solving ability kept building from there.

When she took online CPR classes at the start of the pandemic, she figured it couldn’t be just her who was struggling with the steps. So she created an app called CPR Buddy ― a winner in the 2022 Apple Swift Challenge ― which guides users through CPR using vibrations (震动) to regulate breath. After winning the award, Angelina presented her work to Apple CEO Tim Cook, a highlight in her young career, but one she didn’t lose her cool over. “There’s no point putting people on a pedestal (神坛),” she says.

The next year, Angelina built an app called Lilac, designed to assist nonEnglish-speaking single parents with resources for housing, job opportunities and translation support. She was inspired by her own experiences as a child of a single mother who immigrated to the US.

When Angelina decided to pursue pilot training at the age of 16, she was struck by how difficult it was to find financial support, which encouraged her to create yet another app, Pilot Fast Track, which helps those longing to be pilots find scholarships for flight training.

Looking to the future, besides applying to colleges with great labs, Angelina is exploring the field of aerospace cybersecurity and mechatronics ― combining computer science, electrical engineering and mechanical engineering.

“There’s not enough optimism in the world,“ she says. “I have also been in situations in my life where I’ve lost a lot of hope. But in the end, it is a mindset, and there are ways in any situation you’re in to make it somewhat better.”

1. What is Angelina’s pursuit?
A.To design games for kids.
B.To stimulate teen’s curiosity.
C.To address problems through technology.
D.To find innovative approaches to digital challenges.
2. What can we learn about Angelina from Paragraph 3?
A.She couldn’t breathe regularly.B.She was inspired by celebrities.
C.She replaced CPR with an app.D.She was humble about her success.
3. What was the primary goal of developing Pilot Fast Track?
A.To direct pilots’ career paths.
B.To help to-be pilots find funds.
C.To pair future pilots with airlines.
D.To evaluate pilot training schools.
4. What might be the best title?
A.Breaking the codeB.Bearing growing pains
C.Facing life as it isD.Following role models
7日内更新 | 45次组卷
阅读理解-阅读单选(约330词) | 适中 (0.65)

【推荐3】Trying to fight against the nation's food waste problem,Denmark opened the world's first supermarket that sells expired(到期的)or damaged products.

Ever since it was opened in Copenhagen,people have been standing in line outside WeFood for a chance to buy discounted items that would otherwise have ended up being rubbish because of damaged packing or very short use-by dates. Food,cosmetics,and other household items at WeFood are priced at least 30% to 50% lower than those at regular stores.

It's foolish to throw away or let food go to waste," said Hansen, former Minister for Food and Environment." It's bad for the environment and obviously it is money spent on nothing. A supermarket like WeFood makes so much sense and is an important step in the battle to fight against food waste."

While Denmark alone is said to waste about 700,000 tons of food this year, the United Nations has stated that globally, food waste adds up to 1.3 billion tons. It is really shocking, considering that about795million people in the world are still short of food. Denmark, however, has taken measures. As a result, it wastes 25% less food than it did five years ago.

The We Food project is cooperation between the Food Bank and Dan Church Aid. Together they have collected over s 150,000 over the past years. They faced many problems while convincing the government to permit the sale of expired or damaged products. They were finally allowed to carry out the project,and the store is now specially run by volunteers. The money it earns is used to provide funds(基金)for Dan Church Aid's other projects in developing nations.

If We Food can successfully maintain its goods deliveries and remain popular in the long term,Dan Church Aid plans to open many other branches across Denmark.

1. According to the second paragraph,the items sold at We Food are _____________.
A.second-handB.unique
C.popularD.perfect
2. The We Food project is aimed at _____________.
A.helping the developing countries
B.turning all the rubbish into treasure
C.earning more money to expand the supermarket
D.attracting more people to buy their waste products
3. What is the main problem We Food is faced with now?
A.Finding more volunteers to carry out the project.
B.Making sure they have plenty of items for sale.
C.Opening branches of We Food around the country.
D.Getting permission to sell expired or damaged products.
4. Which of the following is the best title of the passage?
A.People stand in line outside We Food for food
B.We Food becomes the world-famous supermarket
C.Fighting against the problem of food waste in Denmark
D.The world's first expired or damaged product supermarket
2019-06-26更新 | 25次组卷
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