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题型:阅读理解-阅读单选 难度:0.65 引用次数:51 题号:21333238

The San Francisco-based company, called Living Carbon, has created poplar (杨树) trees that are genetically engineered (改变基因结构) to grow larger and suck up more carbon dioxide from the atmosphere than standard trees do. In February, workers planted rows of these poplars in southern Georgia. The company intends to plant 4 to 5 millions trees by the middle of next year, which they say will help with the worsening climate crisis.

When plants photosynthesize (进行光合作用), they convert carbon into sugar and nutrients that are eventually consumed by all living organisms. But they also produce a harmful byproduct, which must be broken down during the energy-intensive process of photorespiration (光呼吸), said Yumin Tao, the company’s vice president of biotechnology.

“This is not only wastes energy but also loses much fixed carbon in the form of CO2, which gets released into the air again,” Tao added. “It’s a wasteful process many plants do.” Living Carbon has reduced photorespiration in its poplars, instead channeling the energy into growth, he says.

The trees have three genes inserted to achieve this, including one from squash and one from green algae. But the company has yet to show its modified trees can capture more carbon in a real — world setting. Its only publicly available data comes from a study in a greenhouse that lasted for only a few months and has yet to be peer reviewed. “Their claims seen bold based on very limited real-world data,” says Andrew Newhouse, a conservation biologist at the SUNY College of Environmental Science and Forestry.

Still, the study reported the modified poplars grew as much as 53% larger in five months compared to the unmodified ones, capturing 27% more carbon dioxide. Now, the company hopes its other field trials in locations like Oregon and Pennsylvania will show similar successes. It’s currently focused on planting on private lands, where fewer roadblocks exist.

“We specially focus on land where trees otherwise wouldn’t be planted, like abandoned mine lands-areas where there isn’t an existing, rich ecosystem that’s allowing for a large amount of carbon removal right now,” says Maddie Hall, Living Carbon’s CEO.

1. Why does the company want to plant genetically modified poplars?
A.To help with the worsening climate crisis.
B.To better study them to gain more accurate data.
C.To replace ordinary poplars with genetically modified poplars.
D.To find suitable places for genetically modified poplars to grow.
2. What is Andrew Newhouse’s attitude to the company’s findings?
A.Disapproving.B.Ambiguous.C.Skeptical.D.Supportive.
3. What can we learn about the genetically-engineered poplars?
A.They are very resistant to carbon.B.They have a growth advantage.
C.They have two genes inserted.D.They photosynthesize even faster.
4. What is the best title for the text?
A.A Company Is Trying to Engineer Trees Genetically
B.Poplar Trees Might Be Planted All Around the World
C.Genetically Modified Trees Are Taking Root to capture Carbon
D.Research Is Being Conducted to Use Trees to Remove CO2

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阅读理解-阅读单选(约400词) | 适中 (0.65)
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文章大意:这是一篇议论文。文章通过假设说明,对于未来的智能机器,我们人类应该把人工智能的发展控制在人类的控制之内。

【推荐1】Given how valuable intelligence and automation are, we will continue to improve our technology if we are at all able to. At a certain point, we will build machines that are smarter than we are. Once we have machines that are smarter than we are, they will begin to improve themselves. The concern is really that we will build machines that are much more competent than we are. And the slightest divergence (分歧) between their goals and our own could destroy us.

Just think about how we relate to ants. We don’t hate them. We don’t go out of our way to harm them. In fact, sometimes we take pains not to harm them. We step over them on the sidewalk. But whenever their presence seriously conflicts with one of our goals, we will kill them without hesitation. The concern is that we will one day build machines that, whether they’re conscious or not, could treat us with similar disregard.

The bare fact is that we will continue to improve our intelligent machines. We have problems that we desperately need to solve. So we will do this, if we can. The train is already out of the station, and there’s no brake to pull. If we build machines that are more intelligent than we are, they will very likely develop in ways that we can’t imagine, and transcend us in ways that we can’t imagine.

So imagine we hit upon a design of super intelligent AI that has no safety concerns. This machine would be the perfect labor-saving device. It can design the machine that can build the machine which can do any physical work, powered by sunlight, more or less for the cost of raw materials. So we’re talking bout the end of human labour. We’re also talking about the end of most intellectual work. So what would apes like ourselves do in these circumstances?

But the moment we admit that information processing is the source of intelligence, we have to admit that we are in the process of building some sort of god. Now would be a good time to make sure it’s a god we can live with.

1. Why does the author mention ants in Paragraph 2?
A.To compare intelligent machines to ants.
B.To show improved machines will get away from us.
C.To stress the presence of machines does conflict with our goals.
D.To explain future intelligent machines could treat us without mercy
2. What does the underlined word “transcend” in Paragraph 3 mean?
A.Disable.B.Inspire.C.Disappoint.D.Outpace.
3. How is the passage mainly developed?
A.By making comparisons.
B.By giving assumptions.
C.By showing valid evidence.
D.By analyzing statistics
4. Which of the following statements can best summarize the author’s viewpoint towards Al?
A.Human beings will no doubt be destroyed by AI in the future
B.Super intelligent AI will put an end to human labour eventually.
C.We should keep the development of AI within humans’ control.
D.Human beings should stop the development of super intelligent AL.
2023-03-18更新 | 446次组卷
阅读理解-阅读单选(约350词) | 适中 (0.65)
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文章大意:本文是一篇说明文。文章主要介绍了Alphabet Inc.公司研发的可实时翻译的智能眼镜。

【推荐2】More than ten years after introducing “Google Glass”, Alphabet Inc. has created a new kind of smart eyeglasses. The company says the wearable computer device can translate different languages in real time.

A working model of the yet-unnamed device was presented to the public last month during the yearly Google conference. Google did not say when the glasses might go on sale to the public.

The previous Google Glass device included a wearable camera that could film what the wearers saw. That caused widespread privacy concerns. The camera element also gave Google Glass a kind of science-fiction look. The latest device looks more similar to traditional glasses.

A brief demonstration of the new eyeglasses described its translation ability, but did not provide additional details. The company also did not say whether the new device would be equipped with a camera. A demonstration explained that a person, wearing the glasses and talking with someone who speaks a different language, can see the spoken words in their own language. The description showed translations including English, Mandarin, Spanish and American Sign Language.

The new device is one of several products shared at the conference that are currently in development. The company says the products aim to better connect Google services with activities happening in the real world. This includes company offerings for searching and viewing maps, as well as other services using the latest developments in artificial intelligence (AI).

Eddie Chung, a director of product management at Google, spoke to developers about the new eyeglasses. “What we’re working on is technology that enables us to break down language barriers, taking years of research in Google Translate and bringing that to glasses,” he said. “Apart from breaking down language barriers, another use of these translating glasses is enabling communication with people who are deaf or hard of hearing. While these glasses might not be a revolutionary product like Google Glass, they could provide a relatively simple solution to a real-world problem.”

1. What can we learn about the latest smart eyeglasses?
A.They will be equipped with a camera.
B.They will appear on the market next year.
C.They can help users communicate easily.
D.They have a kind of science-fiction look.
2. What’s the purpose of this text?
A.To share a wearable computer device on sale.
B.To introduce a new product in development.
C.To advertise the smart eyeglasses for sale.
D.To show the development of Google Glass Device.
3. Who will use the new smart eyeglasses probably?
A.A Japanese who will talk with some Frenchmen.
B.Professors who research on native languages.
C.Tourists who search and view maps in Germany.
D.An American deaf boy who will listen to a speech.
4. What’s Eddie Chung’s attitude towards the new eyeglasses.
A.Favorable.B.Doubtful.C.Opposed.D.Disappointed.
2023-11-09更新 | 57次组卷
阅读理解-阅读单选(约350词) | 适中 (0.65)
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【推荐3】While jewelry made from gold can be beautiful, most people admit that wearing the heavy metal over long periods of time can get a little annoying. Now, researchers from Swiss university ETH Zurich have created a new form of lightweight gold that weighs five to ten times less than traditional 18-carat gold—which typically consists of 75 percent gold and 25 percent copper—but has the same purity.

The researchers began by mixing gold with water, salt, protein fibers and other materials. They then replaced the water with alcohol and placed the mixture inside a high-pressure carbon dioxide (CO2) box. The reaction between the gas and alcohol transformed the golden plastic into a light material that can be heated to melt and made into whatever form was needed. "This gold has some characteristics of plastic,” says team leader Raffaele                    Mezzenga, professor of Food and Soft Materials at ETH Zurich.

In addition to being lighter, the "plastic” gold has other advantages over traditional forms. It can be melted into shape at about 105 degrees Celsius, much lower than the 1,064 degrees Celsius required to melt pure 24-carat gold. The metal's firmness can be easily adjusted by changing the components at the beginning of the process. It is also much easier to vary the color. "As a general rule, our approach lets us create almost any kind of gold we choose, in line with the desired properties, says Mezzenga.

The researchers, who published their study in the journal Advanced Functional Materials on January 10, 2020, believe the new lightweight gold will be able to replace the metallic version in most traditional applications, including jewelry and watches. However, given that most buyers associate high-quality gold with weight, that may take some time. But the material will undoubtedly be beneficial for use inside electronic devices, chemical catalysts (催化剂),and even radiation shielding.

1. Why do many people find the traditional gold annoying?
A.It costs too much。
B.Its purity is too low.
C.It feels too heavy to wear long.
D.Its beauty lasts a short time,
2. What is the second paragraph mainly about?
A.The functions of the "plastic" gold.
B.The components of the "plastic” gold.
C.The characteristics of the "plastic” gold.
D.The production process of the "plastic" gold.
3. Which is the "plastic" gold's advantage over the traditional gold?
A.It is easier to process.
B.It is more widely used.
C.It has a lower temperature.
D.It is more convenient to get.
4. Where is this text most likely from?
A.A diary.B.A guidebook.
C.A novel.D.A magazine.
2020-07-01更新 | 139次组卷
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