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题型:阅读理解-阅读单选 难度:0.65 引用次数:136 题号:12843547

Scientists have designed “transparent wood” that could replace conventional glass in windows. The innovation was developed using wood from the balsa tree, which is native to South and Central America, and claims to be five times more thermally efficient than glass.

The team treated balsa wood in an oxidizing bath (氧化池) that bleaches (漂白) it of nearly all visibility and then poured it into a synthetic polymer (合成物) called polyvinyl alcohol (PVA 聚乙烯醇), creating a product that is virtually transparent.

Unlike traditional glass, the transparent wood can bear much stronger impacts and will bend or separate when damaged, instead of being destroyed into tiny pieces.

The transparent wood was created by teams at the University of Maryland and University of Colorado, which set out to find a greener alternative to conventional glass—a production that creates 25,000 tons in emissions each year.

Along with contributing to greenhouse gases, glass contributes to a loss of energy.

“Residential building windows in particular account for 10-25% of the heat loss due to their poor thermal (保热的) management capability,” the team wrote in the study.

“Exploring energy efficient window materials is thus highly desirable to address heating costs, energy shortages, and the global impact of climate change associated with increased carbon emissions.”

The team notes that the bonding between PVA and cellulose (纤维素) in the wood, creates a tightly packed structure that allows for more thermal protection and makes it more durable and lighter than glass.

“Switching to transparent wood could prove to be cost efficient as well,” researchers shared in a statement.

“It is approximately five times more thermally efficient than glass, cutting energy costs.”

“It is made from a sustainable, renewable resource with low carbon emissions. It’s also compatible (兼容的;可共存的) with existing industrial processing equipment, making the transition (过渡) into manufacturing an easy process.”

1. How many key steps are to take to make balsa wood transparent based on the passage?
A.One.B.Two.C.Three.D.Four.
2. Among the items listed below, which ones are transparent wood’s advantages over conventional glass?
① being more thermally efficient
② bearing much stronger impacts
③ breaking into tiny pieces when damaged
④ cutting energy costs
⑤ contributing to a loss of energy
⑥ being more durable and lighter
A.①②③④⑥B.①②④⑤⑥
C.①②④⑥D.①②④⑤
3. Which of the following is NOT TRUE of the research team?
A.They developed the transparent wood from the balsa tree native to South and Central America
B.They set out to find a greener alternative to conventional glass because glass contributes to loss of energy.
C.They claimed the transparent wood was five times more thermally efficient than glass.
D.They concluded the process of producing the transparent wood is more difficult than that of producing glass.
4. The passage is mainly about ________.
A.a new technology of replacing transparent wood
B.a production of a new type of building material
C.an innovation (改革;创新) of new residential (适于住宅的) building glass
D.an invention of a new energy efficient window material

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【推荐1】Apple’s well publicized iPhone X finally went on sale in pre-orders last week. With a starting price of $ 999, the iPhone X has the highest price of any iPhone ever offered. Yet Apple says its latest smartphone has so far been “off the charts.

One of the most-talked about features of the iPhone X is the new Face ID recognition system, which replaces the Touch ID on other Apple devices that used a fingerprint to unlock the phone. It works by projecting more than 30, 000 dots on the face of users to create a kind of map- An infrared (红外线的) camera then reads these marks to create an image that can be confirmed as having the same appearance. Apple says the system is also designed to continually learn. Each time the face is used to unlock the phone, it is supposed to note any changes, such as facial hair or the person getting older. The system can then remember the changes to keep recognizing the person over time.

A face can unlock iPhone X, but can it be fooled?

One fairly common failure was that the Face ID sometimes did not unlock the iPhone X if the user wore a pair of sunglasses. Not surprisingly, wearing any kind of disguise (化妆) ---even one covering just part of the face—caused Face ID to fail. It was found to work correctly when the user was wearing headphones or a hat.

Several attempts were made to trick Face ID into unlocking the phone with a photo of a person instead of a real face. The iPhone X was able to pass these tests by knowing the difference between a photo and a face. Wall Street Journal reporter Joanna Stern tried something a little different. She went to a mask maker and asked for a recreation of her face to see if the iPhone X would be fooled. It was not.

Apple says its research shows there is only a one in a million chance of another person being able to unlock someone else’s iPhone X with Face ID. The company has promised the system will become “the new gold standard” for all facial recognition.

1. What does the underlined part “off the charts” in Paragraph 1 probably mean?
A.far from satisfactory.B.extremely successful.
C.surprisingly unpopular.D.unbelievably disappointing.
2. Which of the following is true of iPhone X’s Face ID system?
A.It is a hot topic worth debating.
B.It works in the same way as Touch ID.
C.It is smart enough to continue learning.
D.It can function well without an infrared camera.
3. Under which situation can the owner unlock the iPhone X?
A.When he or she wears a hat.
B.When he or she wears a mask.
C.When he or she uses a photo.
D.When he or she wears glasses.
4. What’s Apple’s attitude toward Face ID system?
A.Doubtful.B.Puzzled.
C.Positive.D.Pessimistic.
2018-07-04更新 | 57次组卷
阅读理解-阅读单选(约340词) | 适中 (0.65)
名校
文章大意:这是一篇记叙文,主要讲的是疫情期间作者受社区互帮互助的启发,开发出了一款能够帮助人们减少在购物和交通活动中的碳排放的应用程序。

【推荐2】As a senior school graduate, with COVID-19 cases rising and lockdown hitting, I’ve had plenty of concerns. Losing my graduation ceremony was one of them. But being unable to lend a hand to my community at such a terrible time was the greatest concern. Except for wearing my mask, following the health officials’ guidelines, and assisting seniors to get their groceries, there wasn’t anything more I could do.

Then it struck me. Solving COVID-19 relied only on individual steps and the goodwill of human awareness. But the next challenge we have to deal with ahead is climate change known as the silent pandemic without a vaccine. So all I could think of was: Why don’t we do the same for it, and try to deal with global warming through our everyday activities?

I have decided to take a gap year and created an app to help people reduce carbon emissions from their shopping and transport activities. Even though I’d never written any program before, my will was greater than any excuse I could think of. The first version was just a one-screen app. Through the lockdown, I’ve had only 70 people to test the concept with and barely created any impact. Plus, the process of leading a social organization seemed like a small boat in a rough sea to me. But instead of giving up, I chose to fill the gap. And the coolest thing was that the more I was learning, the more people got interested in the idea. Through every leadership program, I built a stronger user community where each person was equally passionate and brave to make a change. Their enthusiasm was my greatest fuel for innovation.

Today, through the app, over 4,000 people reduced more than 150,000 kg carbon emissions. The app turned into an international movement. I proved to myself that miracles really happen when you dare to make a change.

1. What inspired the author to create the app?
A.The active involvement of thousands of users.
B.The author’s contributions to community service.
C.The influence of human activities on global warming.
D.Similarities between fighting climate change and COVID-19.
2. What can we know about the app from the passage?
A.It is a well-designed app.
B.It is for leading an organization.
C.It inspires people worldwide to make changes.
D.It became an instant hit when it was first invented.
3. How can we describe the author?
A.Determined and creative.B.Brave and adventurous.
C.Friendly and cautious.D.Kind and humorous.
4. What message does the story convey?
A.Solving Covid-19 is the key to inventions.
B.Ups and downs often lead where you belong.
C.Creativity results from challenging the authorities.
D.Miracles do occur if you have the courage to make a change.
2023-11-10更新 | 35次组卷
阅读理解-阅读单选(约360词) | 适中 (0.65)

【推荐3】Google’s AlphaGo defeated the South Korean Go grandmaster Lee Sedol four games to one Artificial intelligence had suddenly reached a new and unexpected height.

But AlphaGo is no longer the best Go “player” in the world Google’s artificial intelligence group, DeepMind. has created the next generation of its Go-playing program, called AlphaGo Zero The new A1 program is unique in the way it learned to play Go Instead of learning from human matches, as its predecessor (前任) did, AlphaGo Zero mastered Go in just two days without any human knowledge of the game and defeated AlphaGo by day three, reported The Guardian It then went on to defeat AlphaGo 100 games to zero.

To learn how to play Go, AlphaGo Zero played millions of matches against itself using only the basic rules of the game to rapidly create its own knowledge of it tike the previous version, it used “reinforcement (增强) learning to become its own teacher, ”ccording to DeepMind’s website.

“It’s more powerful than previous approaches. ’’ David Silver,   AlphaGo’s lead researcher, told The Guardian, “because by not using human data, or human expertise in any fashion, we’ve removed the constraints (约束) of human knowledge and it is able to create knowledge itself . ”

AlphaGo Zero’s approach to selt-learning is a significant advancement in AI could be applied to help solve some of the world s biggest problems, according a recent research report published in the journal Nature. For example, DeepMind co-founder DemisHassabis argues that AlphaGo Zero could probably find cures for a number of serious diseases within weeks, according to The Telegraph Indeed, the AI is now being used to study protein folding, which is connected to diseases such as Parkinson’s and Alzheimer’s.

So now that AI has surpassed human beings in some ways, perhaps the question is not about what AI can learn from humans, but what humans can learn from AI We can only wait and see.

1. What can we learn from the first two paragraphs?
A.AlphaGo defeated Lee Sedol five games to zero
B.AlphaGo Zero defeated AlphaGo within one day
C.AlphaGo Zero is the first program to defeat a human at Go
D.AlphaGo Zero has become the new best Go player
2. How is AlphaGo Zero different from previous Go-playing programs?
A.It can collect human knowledge automatically
B.It can create knowledge with human data
C.It can become its own teacher in learning Go skills
D.It can play many matches without a break
3. What’s the possible application of AI in the future according to the aiticle?
A.Treating diseases.B.Making new Go rules.
C.Solving math problems.D.Creating new proteins.
4. Which of the following can replace the underlined word “surpassed” ?
A.increasedB.outdone
C.declinedD.hidden
2019-09-26更新 | 21次组卷
共计 平均难度:一般