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题型:阅读理解-阅读单选 难度:0.65 引用次数:134 题号:9230606

Researchers in Australia have discovered an effective new method to capture the atmospheric carbon dioxide that is damaging our planet and transform it into something solid, making it much easier to store.

Carbon capture isn’t new, but previous methods call for the gas to be compressed into liquid and then injected underground. Widespread usage of that technology has been locked by economic and environmental concerns due to possible leaks. Instead, in a study published in Nature Communications, the group details their sustainable and cost-effective plan for transforming CO2 into coal.

This new process involves a liquid metal catalyst( 催化剂 )that is efficient in conducting electricity. CO2 gas is dissolved in a container with some liquid. Once electricity charge is introduced, the CO2 begins to turn into solid pieces of carbon, which can be collected and stored.

What makes this particularly unique is that the entire process can occur at room temperature. Previous experiments have only shown a gas to solid conversion at extremely high temperature, which made it impossible on a large scale. Now, the researchers are hoping that their work will be used to create even further when it comes to carbon storage.

In an interesting side benefit, the solid carbon also works as an electrode( 焊 条 ), which opens up a world of possibilities. “A side benefit of the process is that the carbon can hold electrical charge, becoming a super battery, so it could potentially be used as a part in future vehicles,” explains Dr. Dorna Estrafilzadeh, a researcher. “The process also produces fuel as a by-product, which could also have industrial applications.”

1. What can we know about the previous carbon capture methods?
A.People have to inject liquid to the gas.
B.The previous methods can be done easily.
C.The previous methods are not very popular.
D.People have widely accepted previous methods.
2. What is the special part of the new method?
A.It needs electricity to make the process efficient.
B.It can be done in any kind of container.
C.It doesn’t need extreme temperature.
D.It can produce much solid carbon.
3. What can we infer from the last paragraph?
A.The method will make fossil oil disappear.
B.The method will influence the future industry.
C.The method will make developed countries more powerful.
D.The method will be used to make new vehicles.
4. What is the best title for the passage?
A.How to change carbon into CO2.
B.A new carbon capture technology.
C.A new technology to get useful carbon.
D.Australia makes the world cleaner than before.

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阅读理解-阅读单选(约340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Facebook正在开发的一些新的技术。

【推荐1】Face book has published its mind-reading wrist device and an augmented reality (增强现实) keyboard with future hardware products. The company’s Facebook Reality Labs division showed off the technologies on a virtual call with members of the media. Executives from the division talked about the technologies while videos of the projects were played for audience.

The wrist device is capable of reading neurological (神经系统的) signals sent from aw’s brain down to his or her hand. It could read these signals to get a sense of what a user wants to do and copy the action in a virtual or augmented reality environment. “You actually have more of your brain dedicated to controlling your wrist than any other part of your body.” said TR Reardon, director of research science at Facebook Reality Labs.

The Facebook researchers demonstrated “force” actions where a user could use his or her fingers in real life to hold and control virtual, far-away objects in augmented reality. The name of the action is a reference to Star Wars where certain characters can use “force” to control and move people or objects that are far away from them.

Additionally, the company demonstrated electromyography wristbands (机电腕带) that users could wear to type on any surface as though they were typing on a physical keyboard. Although there is no keyboard, the wristbands would register the intention of a user’s finger stroke (挥笔动作) and note down the letters and words. .

Facebook’s development of these technologies comes as the company prepares to release its first smart glasses this year. That device will be Ray-Ban glasses. Unlike smartphones, which rely on touchscreens, there is no current obvious input mechanism for smart glasses.

Asked how soon these technologies may make their way to the public, Facebook CTO Mike Schroepfer said they are in the early stages of development and no doubt will bring much convenience to our future life.

1. Where did Facebook demonstrate the new technologies?
A.On a virtual callB.In a research paperC.At a press conferenceD.In an IT magazine
2. What can we learn from the passage?
A.The wrist device can only read neurological signals sent from a user’s brain.
B.Electromyography wristbands are connected to a physical keyboard.
C.There is no obvious input mechanism for Facebook’s smart glasses.
D.These technologies have been put on the market.
3. What’s Mike Schroepfer’s attitude to the future of these technologies?
A.TolerantB.CriticalC.HopefulD.Indifferent
4. Which is the most suitable title for the text?
A.Facebook and Its GoalB.Facebook, a Tech-company
C.Facebook and Its DevelopmentD.Facebook’s New Technologies
2023-03-10更新 | 221次组卷
阅读理解-阅读单选(约410词) | 适中 (0.65)

【推荐2】Telescopes(望远镜)have come a long way since the first ones were invented early in the 17th century.Traditional telescopes allow astronomers to view objects in space thanks to the visible(看得见的)light those objects emit(发出), or reflect.However, for modern telescopes, any Electromagnetic(电磁的)radiation will be enough for the purpose of viewing objects in space.Extremely hot objects, such as stars, emit not only visible light but also high-energy gamma radiation.Specialized telescopes—such as NASA's space-based Chandra X-ray Observatory—are built to detect such radiation.Cold objects—like comets and asteroids—emit low-energy radiation, which is invisible to the naked eye.Much of the universe is even colder.The clouds of dust and gas of which stars are made are only slightly warmer than absolute zero—the temperature at which atoms stop moving.To catch images of cold objects, astronomers use radio telescopes.

A radio telescope is a device that typically uses a large dish antenna(抛物面天线)to collect the low-energy radiation emitted by objects in space.However, it was quite challenging to get a clear image of those objects using ground-based antennas.The reason is that low-energy radiation is absorbed and distorted by water vapor(水蒸气)in the Earth's atmosphere.The signal that a dish antenna on the ground finally receives is therefore weak.

The signal can be strengthened by positioning the antenna on a site with very dry air.It can be made even stronger by arranging several antennas in an array, combining their signals so that they function together as a single, more powerful telescope.And if the antennas are portable, the distance between them can be adjusted to change the sensitivity of the telescope.Placed far apart, they can focus on a small goal, such as a planet.Grouping the antennas closer together can be useful for catching images of an object as large as a galaxy.

Atacama Large Millimeter Array(ALMA), a large array of antennas, was officially opened in March 2013.Since the official opening of ALMA, there has been a steady stream of discoveries of great interest to astronomers.In July 2013, the telescope's high-quality images provided clues that may help answer a question that has long puzzled astronomers.ALMA is also helping researchers understand how planets are born, by providing the first-ever images of the planet-forming process.These observations are just the beginning.In the future, ALMA will show us even finer details of galaxies and star systems.

1. What images can radio telescopes catch that other telescopes cannot?
A.Images of distant atoms.
B.Images of distant hot objects.
C.Images of objects that emit visible light.
D.Images of objects that emit low-energy radiation.
2. What is a limitation of a radio telescope?
A.It can only be used in large and distant deserts.
B.It is greatly affected by water vapor from the Earth.
C.It often fails to combine signals with other telescopes'.
D.It breaks down easily due to using ground-based antennas.
3. What is a good way to get a wide-field shot of a galaxy?
A.Using a telescope with antennas spaced far apart.
B.Using several telescopes all aimed at the same place.
C.Using several telescopes all aimed at different places.
D.Using a telescope with antennas spaced closely together.
4. What is the purpose of the last paragraph?
A.To show the importance of ALMA.B.To explain the operation of ALMA.
C.To describe how ALMA was set up.D.To point out that ALMA has changed.
2021-11-15更新 | 33次组卷
阅读理解-阅读单选(约460词) | 适中 (0.65)
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【推荐3】An old saying has it that half of all advertising budgets are wasted — the trouble is, no one knows which half. In the internet age, at least in theory, this fraction can be much reduced. By watching what people search for, click on and say online, companies can aim “behavioral” ads at those most likely to buy.

In the past couple of weeks a quarrel has illustrated the value to advertisers of such fine-grained information: Should advertisers assume that people are happy to be tracked and sent behavioral ads? Or should they have explicit permission?

In December 2010 Americas Federal Trade Commission (TC) proposed adding a “do not track” (DNT) option to internet browsers, so that users could tell advertisers that they did not want to be followed. Microsoft’s Internet Explorer and Apples Safari both offer DNT; Google’s Chrome is due to do so this year.In February the FTC and the Digital advertising Alliance (DAA) agreed that the industry would get cracking (尽快行动) on responding to DNT requests.

On May 31st Microsoft set off the row.It said that Internet Explorer 10, the version due to appear with Windows & would have DNT as a default (默认值).

Advertisers are horrified.Human nature being what it is, most people stick with default settings. Few switch DNT on now, but if tracking is off it will stay off. Bob Lidice, the chief executive of the Association of National Advertisers, says consumers will be worse off if the industry cannot collect information about their preferences. People will not get fewer ads, he says. “They’ll get less meaningful, less targeted ads.”

It is not yet clear how advertisers will respond. Getting a DNT signal does not oblige anyone to stop tracking, although some companies have promised to do so. Unable to tell whether someone really objects to behavioral ads or whether they are sticking with Microsoft’s default, some may ignore a DNT signal and press on anyway.

Also unclear is why Microsoft has gone it alone. After all, it has an ad business too, which it says will comply with DNT requests, though it is still working out how. If it is trying to upset Google, which relies almost wholly on advertising, it has chosen an indirect method: There is no guarantee that DNT by default will become the norm.DNT does not seem an obviously huge selling point for Window 8 — though the firm has compared some of its other products favorably with Google’s on that count before.Brendon Lynch, Microsoft’s chief privacy officer, blogged: “We believe consumers should have more control: Could it really be that simple?”

1. It is suggested in Paragraph 1 that “behavioral” ads help advertisers to _________.
A.ease competition among themselvesB.lower their operational costs
C.avoid complaints from consumersD.provide better online services
2. “The industry” (Line 4, Para.3) refers to__________.
A.online advertisersB.e-commerce conductors
C.digital information analystsD.internet browser developers
3. Bob Liodice holds that setting DNT as a default_________.
A.may cut the number of junk adsB.fails to affect the ad industry
C.will not benefit consumersD.goes against human nature
4. Which of the following is true according to Paragraph 6?
A.DNT may not serve its intended purpose.
B.Advertisers are willing to implement DNT.
C.DNT is losing its popularity among consumers.
D.Advertisers are obliged to offer behavioral ads.
2020-12-14更新 | 173次组卷
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