高考英语 考前突破阅读理解能力 科普类 人小型水电站有损生态系统素材

高考英语阅读理解(科普环保)试题经典含解析一、高中英语阅读理解科普环保类1．犇犇阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

A team of international scientists is due to set off for the world's biggest iceberg in a mission aiming to answer fundamental questions about the impact of climate change in the polar regions. The scientists, led by the British Antarctic Survey (BAS), are trying to reach a newly revealed ecosystem that had been hidden for 120,000 years below the Larsen C ice shelf.Last year, part of the Larsen C ice shelf calved (崩解) away, forming a huge iceberg-A68—which is four times bigger than London, and revealing life beneath for the first time. Now scientists say it is a race against time to explore these new ecosystems before they are transformed to the light. Marine biologist Dr Katrin Linse from the BAS is leading the mission."The calving of A68 provides us with a unique opportunity to study marine life as it responds to a huge environment change," she said. "It is important that we get there quickly before the undersea environment changes as sunlight enters the water."Professor David Vaughan, science director at the BAs, said, "We need to be bold (大胆的) on this one. Larsen C is a long way south and there's lots of sea ice in the area, but this is important science, so we will try our best to get the team where they need to be. He said climate change had already affected the sea around Antarctica and is warming some coastal waters. "Future warming may make some habitats warm. Where these habitats support unique species that are adapted to love the cold and not the warm, those species are going to either move or die."There is growing concern about the possible impact of climate change in the Antarctic. Earlier this month, a report revealed that melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of the sea level rise. The research, published by the National Academies of Science, Engineering and Medicine, said, "At the current rate, the world's ocean will be, on average, at least 60cm higher by the end of the century." However, it found that the process is accelerating, and more than three quarters of the acceleration since 1993 is due to melting ice sheets in Greenland and Antarctica, the study shows.（1）Why are the scientists eager to go to the iceberg?A. To study how the iceberg was formed.B. To study a newly discovered ecosystem.C. To explore a new way to prevent climate change.D. To explore the geography of the Larsen C ice shelf.（2）What do the underlined words "this one" in the fourth paragraph refer to?A. The Larsen C ice shelf.B. Climate change in Antarctica.C. The A68 iceberg with the ecosystem beneath it.D. The condition of animal species in Antarctica.（3）What can we learn about the A68 iceberg from the text?A. It is as big as London.B. It is part of an ice shelf in the Arctic.C. It will disappear in a very short time.D. It has uncovered an unknown ecosystem in Antarctica.（4）What can we infer from the last paragraph?A. There is no need to worry about climate change in Antarctica.B. The ice sheets in Greenland and Antarctica are melting at a steady rate.C. Many creatures living in deep water will die out due to climate change.D. By 2100, the sea level will have risen to a much higher level than now.【答案】（1）B（2）C（3）D（4）D【解析】【分析】本文是一篇说明文，南极地区的拉森C冰架崩解形成了一座巨大的冰山A68 iceberg。

高考英语阅读理解(科普环保)解题技巧和训练方法及练习题(含答案)一、高中英语阅读理解科普环保类1．犇犇阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

When athletes at the 2020 Tokyo Olympics collect their medals, they'll not only be wearing something that celebrates their sporting performance, but something that symbolizes lastingness. For both the 2020 Olympics and Paralympics, organizers aim to make all of the gold, silver, and bronze medals out of used electronics. This strong message about how to make use of e-waste has gotten a lot of Japan involved.Starting in April 2017, the Japanese Olympic Committee began collecting old laptops, digital cameras, smartphones, and other abandoned electronics. The initiative (倡议) has achieved great success. Already, the quantity needed for bronze medals has been met, and they're in the homestretch for silver and gold medals, meaning the collection process can pack up at the end of March.When looking just at the number of cell phones collected, the amount of waste is shocking. In a period of about 18 months, a little over 5 million smartphones were collected thanks to cooperation with NTT DOCOMO. Japan's largest mobile phone operator allowed the public to turn in phones at their shops, which counted a lot in the project's success.After being taken apart and sorted, the small electronics underwent a smelting process to extract (提炼) all the gold, silver, and bronze elements. Thanks to this initiative, the worldwide struggle with e-waste will have a global platform. According to a study published by the United Nations University—44.7 million metric tons of e-waste were made in 2016. Only 20% of that was actually recycled. Unfortunately, this figure is set to rise significantly in the coming years, moving to 52.2 million metric tons by 2021. So while the Tokyo Olympics initiative might be just a drop in the bucket, it's a good start in showing what the public can do if they're made more aware of the issue.（1）What can be learnt about Tokyo Olympics initiative from the passage?A. E-waste in the world is increasing significantly.B. It is easy to get elements needed from the used electronics.C. Only producers of electronics participated in the project.D. NTT DOCOMO contributed to the success of the project.（2）Which can best replace the underlined word "homestretch" in Paragraph 2?A. starting periodB. collection effortC. final stageD. hard search（3）What influence does the Tokyo Olympics initiative have?A. It offers an effective method to solve the problem of e-waste.B. It shows the power of advanced technology in daily life.C. It saves the expense spent in making all the medals.D. It encourages the public's involvement in dealing with e-waste.（4）What is the writer's attitude to the Tokyo Olympics initiative?A. PositiveB. NegativeC. AmbiguousD. Indifferent【答案】（1）D（2）C（3）D（4）A【解析】【分析】本文是一篇说明文，介绍了日本将回收利用废弃的电子产品中的金属，用于制作2020年奥运会奖牌。

英语高三英语阅读理解科普环保专题训练答案及解析【英语】高三英语阅读理解( 科普环保 ) 专题训练答案及解析一、高中英语阅读理解科普环保类1．犇犇阅读短文，从每题所给的四个选项（A、 B、 C 和 D）中，选出最正确选项。

A shark moving around the coastline is normally a worrying sight ， but this waterborne drone(无人机 ) threatens floating rubbish instead of people.Developed by Dutch company RanMarine, the WasteShark takes nature as its inspiration with its whale shark-like mouth. Responsible for collecting waste, the drone will begin operations in Dubai Marina in November after a year of trials with local partner Ecocoast.According to RanMarine, the WasteShark is available in both autonomous and remote-controlled models. Measuring just over five feet by three-and-a-half feet (1.5 meters by 1.1 meter), it can carry up to 352 pounds of rubbish (159.6 kg) and has an operational battery life of 16 hours.By 2016 there were approximately 150 million tons of plastic in the world's oceans. One paper from December 2014 estimated that over a quarter of a million tons of ocean plasticpollution was afloat."WasteShark also has the abilities to gather air and water quality data, remove chemicals out of the water such as oil, and heavy metals, and scan the seabed to read its depth and outlines," said Oliver Cunningham, one of the co-founders of RanMarine. "Fitted with a collision-avoidance system, the drone uses laser imaging detection and ranging technology to detect an object in its path and stop or back up if the object approaches.""Our drones are designed to move through a water system, whether it's around the perimeter (周边 ) or through the city itself. The drones are that last line of defense between the city and the open ocean," added Cunningham. "WasteSharks are operating in Dubai, South Africa and theNetherlands and cost $ 17, 000 for the remote-controlled model and just under $ 23, 000 for the autonomous model."Dubai-based operator Ecocoast has two WasteShark drones. Co-founder Dana Liparts says they will clean waterfronts for clients including hotels and environmental authorities and that Ecocoast' intention is to have the collected rubbish recycled or upcycled. However, Liparts argues thatcleaning waterways doesn't have a one-size-fits-all solution and requires a combination of new technology, preventative measures and changing people's attitudes towards littering.（1） What do we know about the WasteShark?（2） What does Paragraph 4 mainly tell us?A. The causes of ocean pollution.B. The dangers of using plastics.C. The severity of ocean garbage pollution.D. The importance of ocean protection.英语高三英语阅读理解科普环保专题训练答案及解析（3） What will the WasteShark do with an approaching object?A. Avoid crashing into it.B. Break it into pieces.C. Swallow it.D. Fly over it.（4） Which of the following ideas does Liparts agree with?A. The WasteShark should be used more widely.B. More measures should be taken to make water clean.C. The production cost of WasteSharks should be reduced.D. People should take a positive attitude to new technology.【答案】（ 1） C（2） C（3） A（4） B【解析】【解析】本文是一篇说明文，介绍一种水上无人机可以用于清理浮在水面上的垃圾。

最新高二英语阅读理解(科普环保)提高训练及解析一、高中英语阅读理解科普环保类1．犇犇阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A shark moving around the coastline is normally a worrying sight，but this waterborne drone (无人机) threatens floating rubbish instead of people.Developed by Dutch company RanMarine, the WasteShark takes nature as its inspiration with its whale shark-like mouth. Responsible for collecting waste, the drone will begin operations in Dubai Marina in November after a year of trials with local partner Ecocoast.According to RanMarine, the WasteShark is available in both autonomous and remote-controlled models. Measuring just over five feet by three-and-a-half feet (1.5 meters by 1.1 meter), it can carry up to 352 pounds of rubbish (159.6 kg) and has an operational battery life of 16 hours.By 2016 there were approximately 150 million tons of plastic in the world's oceans. One paper from December 2014 estimated that over a quarter of a million tons of ocean plastic pollution was afloat."WasteShark also has the abilities to gather air and water quality data, remove chemicals out of the water such as oil, and heavy metals, and scan the seabed to read its depth and outlines," said Oliver Cunningham, one of the co-founders of RanMarine. "Fitted with a collision-avoidance system, the drone uses laser imaging detection and ranging technology to detect an object in its path and stop or back up if the object approaches.""Our drones are designed to move through a water system, whether it's around the perimeter (周边) or through the city itself. The drones are that last line of defense between the city and the open ocean," added Cunningham. "WasteSharks are operating in Dubai, South Africa and the Netherlands and cost $ 17, 000 for the remote-controlled model and just under $ 23, 000 for the autonomous model."Dubai-based operator Ecocoast has two WasteShark drones. Co-founder Dana Liparts says they will clean waterfronts for clients including hotels and environmental authorities and that Ecocoast' intention is to have the collected rubbish recycled or upcycled. However, Liparts argues that cleaning waterways doesn't have a one-size-fits-all solution and requires a combination of new technology, preventative measures and changing people's attitudes towards littering.（1）What do we know about the WasteShark?A. It can frighten sharks away.B. It is an ocean explorer.C. It is a rubbish collector.D. It can catch fish instead of people.（2）What does Paragraph 4 mainly tell us?A. The causes of ocean pollution.B. The dangers of using plastics.C. The severity of ocean garbage pollution.D. The importance of ocean protection.（3）What will the WasteShark do with an approaching object?A. Avoid crashing into it.B. Break it into pieces.C. Swallow it.D. Fly over it.（4）Which of the following ideas does Liparts agree with?A. The WasteShark should be used more widely.B. More measures should be taken to make water clean.C. The production cost of WasteSharks should be reduced.D. People should take a positive attitude to new technology.【答案】（1）C（2）C（3）A（4）B【解析】【分析】本文是一篇说明文，介绍一种水上无人机可以用于清理浮在水面上的垃圾。

小型水电站有损生态系统Researchers conclude in a new report that a global push for small hydropower（水力发电）projects, supported by various nations and also the Kyoto Protocol to reduce greenhouse gas emissions, may cause unanticipated and potentially significant losses of habitat and biodiversity. An underlying assumption that small hydropower systems pose fewer ecological concerns than large dams is not universally valid, scientists said in the report. A five-year study, one of the first of its type, concluded that for certain environmental impacts the cumulative damage caused by small dams is worse than their larger counterparts.The findings were reported by scientists from Oregon State University in the journal Water Resources Research, in work supported by the National Science Foundation.The conclusions were based on studies of the Nu River system in China but are relevant to national energy policies in many nations or regions -- India, Turkey, Latin America -- that seek to expand hydroelectric power generation. Hydropower is generally favored over coal in many developing areas because it uses a renewable resource and does not contribute to global warming. Also, the social and environmental problems caused by large dam projects have resulted in a recent trend toward increased construction of small dams."The Kyoto Protocol, under Clean Development Mechanism, is funding the construction of some of these small hydroelectric projects, with the goal of creating renewable energy that's not based on fossil fuels," said Desiree Tullos, an associate professor in the OSU Department of Biological and Ecological Engineering."The energy may be renewable, but this research raises serious questions about whether or not the overall process is sustainable," Tullos said."There is damage to streams, fisheries, wildlife, threatened species and communities," she said. "Furthermore, the projects are often located in areas where poverty and illiteracy are high. The benefit to these local people is not always clear, as some of the small hydropower stations are connected to the national grid, indicating that the electricity is being sent outside of the local region."The result can be profound and unrecognized impacts."This study was one of the first of its type to look at the complete range of impacts caused by multiple, small hydroelectric projects, both in a biophysical, ecological and geopolitical basis, and compare them to large dam projects. It focused on the remote Nu River in China's Yunnan Province, where many small dams producing 50 megawatts of power or less are built on tributaries that fall rapidly out of steep mountains. There are already 750,000 dams in China and about one new dam is being built every day, researchers say.。

高三英语阅读理解(科普环保)解题技巧分析及练习题(含答案)含解析一、高中英语阅读理解科普环保类1．犇犇阅读下面文章，然后从题中所给的A、B、C、D四个选项中，选出每个问题的最佳选项。

When we see a person in trouble, the first idea that comes to our mind is to lend a hand. But what if we see an animal in trouble, does the same rule apply?This question was raised after a group of penguins were saved from an icy gully (峡谷) in Antarctica. It was filmed for the BBC wildlife series Dynasties. The film crew were anxious when they saw that a group of penguins had fallen into a gully and been trapped with their young. They built a slope (斜坡) so that a few of the penguins could save themselves.The case has taken the international media by storm. Viewers watching this film let out a sighof relief. "I'm so glad. I understand not taking action directly, but a helping hand isn't bothering, right?" viewer Kathryn Shaw said on her Facebook.However, others think human interference (干涉) is unnatural. "You can't have sunshine throughout your life. To have done anything else would only make matters worse," said the show's creator David Attenborough, according to The Times.In this case, however, Mike Gunton, the executive producer of the series, said that this was a one-off situation. "There were no animals going to suffer by interfering. You weren't touching the animals and it was just felt by doing this... they had the chance not to have to keep slipping downthe slope," he told the BBC.Such cases are familiar to Paul Nicklen, wildlife photographer for National Geographic. He told Metro, "If it's ever a predator (捕食者) situation, no matter how gut-wrenching, you stay out ofthe way. Even when you're watching a male polar bear eat a baby bear.""There's no rule book in those situations. You can only respond to the facts that are right therein front of you," Will Lawson, the show's director, told Daily Mail.（1）What has led to a heated media discussion?A.People's various remarks on penguins.B.The rescue of penguins from a gully.C.Some penguins' sufferings in a gully.D.Ways of filming the series Dynasties.（2）Who holds a positive attitude towards human interference?A.Kathryn Shaw.B.Will Lawson.C.Paul Nieklen.D.David Attenborough.（3）Which of the following best explains the word "gut-wrenching" underlined in paragraph 6?A.Putting one in place.B.Making one confused.C.Putting one in danger.D.Making one heartbroken.（4）What can be a suitable title for the text?A.Reasons for the Necessity of Lending a Hand to AnimalsB.Suggestions on How to Protect Animals From DangerC.Effects of Human Interference on Dangerous AnimalsD.Opinions on Whether to Help Animals in Trouble or Not【答案】（1）B（2）A（3）D（4）B【解析】【分析】本文是一篇说明文，介绍了当动物们面临危险时，我们是否要伸出援救之手，以及如何去保护它们脱险。

最新高考英语阅读理解(科普环保)易错剖析及解析一、高中英语阅读理解科普环保类1．犇犇阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

Supercomputers which can analyse blood samples and predict which patients are likely to become seriously ill could save tens of thousands of lives a year, it was revealed last night, according to The Daily Express.The artificial intelligence (AI) system, developed at University College London and set to be piloted in NHS hospitals later this year, will screen "at risk" patients so doctors can take early action to prevent death or serious illness. Prof Young, a consultant surgeon at Southend University Hospital, said: "I am so excited about this form of technology." Instead of people getting sick or dying because they are not picked up in time, this will allow us to step in earlier which will save lives and an enormous amount of money. "I think the potential of AI in healthcare like this is as big as the Industrial Revolution was—and signals a completely new example in the way we manage healthcare."The technology is the brainchild of Dr Vishal Nangalia, a consultant at the Royal Free Hospital in London. He used AI to analyse a billion stored blood samples from 20 different UK hospital trusts dating back up to 12 years. Computers assess blood test results by picking up subtle changes in red and white blood cells, suggesting a patient is going downhill.He found the technique forecast outcomes of patients with kidney problems with up to 95 per cent accuracy. Traditional methods highlighting serious patient concerns picked up as few as 16 percent of patients who went on to die. "This gives us the opportunity not only to save lives but to prevent serious illness, making the health service not only safer but more efficient." Prof Young said, "Instead of waiting for people to get worse, we will be able to treat them earlier."（1）What does the underlined phrase "screen" in Paragraph2 mean?A. comfortB. treatC. spotD. nurse（2）How do supercomputers help save lives?A. By storing blood samples.B. By analyzing patients' cases.C. By observing changes in blood cells.D. By assisting doctors with their operations.（3）Why did Professor Young mention the Industrial Revolution?A. To show the influence of AI.B. To stress the importance of health care.C. To introduce the topic of supercomputers.D. To present the achievement he has accomplished.（4）What do we know about the new technology?A. It helps patients recover earlier.B. It has helped save thousands of lives.C. It will promote the health service greatly.D. It is intended for patients with kidney diseases.【答案】（1）C（2）C（3）A（4）C【解析】【分析】本文是一篇说明文，介绍超级计算机能够分析血样并预测哪些病人可能会患上重病，每年可以挽救数万人的生命。

最新高考英语阅读理解(科普环保)抓分精品训练含解析一、高中英语阅读理解科普环保类四个选项中，选出最佳选项。

和D、B、C．1犇犇阅读下列短文，从每题所给的A A team of international scientists is due to set off for the world's biggest iceberg in a missionaiming to answer fundamental questions about the impact of climate change in the polar regions.The scientists, led by the British Antarctic Survey (BAS), are trying to reach a newly revealed ecosystem that had been hidden for 120,000 years below the Larsen C ice shelf. Last year, part of the Larsen C ice shelf calved (崩解) away, forming a huge iceberg-A68—whichis four times bigger than London, and revealing life beneath for the first time. Now scientists sayit is a race against time to explore these new ecosystems before they are transformed to the light. Marine biologist Dr Katrin Linse from the BAS is leading the mission. The calving of A68 provides us with a unique opportunity to study marine life as it responds toa huge environment change, she said. It is important that we get there quickly before the湵敤獲慥攠癮物湯敭瑮挠慨杮獥愠?畳汮杩瑨攠瑮牥?桴?慷整? Professor David Vaughan, science director at the BAs, said, We need to be bold (大胆的) onthis one. Larsen C is a long way south and there's lots of sea ice in the area, but this is importantscience, so we will try our best to get the team where they need to be. He said climate changehad already affected the sea around Antarctica and is warming some coastal waters. Futurewarming may make some habitats warm. Where these habitats support unique species that are摡灡整?潴氠癯?桴?潣摬愠摮渠瑯琠敨眠牡?琠潨敳猠数楣獥愠敲朠楯杮琠?楥桴牥洠癯?牯搠敩尮There is growing concern about the possible impact of climate change in the Antarctic. Earlier this month, a report revealed that melting ice sheets in Greenland and Antarctica are speeding upthe already fast pace of the sea level rise. The research, published by the National Academies of Science, Engineering and Medicine, said, At the current rate, the world's ocean will be, onaverage, at least 60cm higher by the end of the century. However, it found that the process is accelerating, and more than three quarters of the acceleration since 1993 is due to melting icesheets in Greenland and Antarctica, the study shows.Why are the scientists eager to go to the iceberg? ）（1A. To study how the iceberg was formed.B. To study a newly discovered ecosystem.C. To explore a new way to prevent climate change.D. To explore the geography of the Larsen C ice shelf.What do the underlined words his one in the fourth paragraph referto? ）（2A. The Larsen C ice shelf.B. Climate change in Antarctica.C. The A68 iceberg with the ecosystem beneath it.D. The condition of animal species in Antarctica.What can we learn about the A68 iceberg from the text? ）（3A. It is as big as London.B. It is part of an ice shelf in the Arctic.C. It will disappear in a very short time.D. It has uncovered an unknown ecosystem in Antarctica.What can we infer from the last paragraph? 4）（ A. There is no need to worry about climate change in Antarctica.B. The ice sheets in Greenland and Antarctica are melting at a steady rate.C. Many creatures living in deep water will die out due to climate change.D. By 2100, the sea level will have risen to a much higher level than now.B）（1【答案】C）（2D）（3D ）（4【解析】【分析】本文是一篇说明文，南极地区的拉森C冰架崩解形成了一座巨大的冰山A68 iceberg。

【英语】高考英语阅读理解(科普环保)解题技巧及经典题型及练习题(含答案)一、高中英语阅读理解科普环保类1．犇犇阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A shark moving around the coastline is normally a worrying sight，but this waterborne drone (无人机) threatens floating rubbish instead of people.Developed by Dutch company RanMarine, the WasteShark takes nature as its inspiration with its whale shark-like mouth. Responsible for collecting waste, the drone will begin operations in Dubai Marina in November after a year of trials with local partner Ecocoast.According to RanMarine, the WasteShark is available in both autonomous and remote-controlled models. Measuring just over five feet by three-and-a-half feet (1.5 meters by 1.1 meter), it can carry up to 352 pounds of rubbish (159.6 kg) and has an operational battery life of 16 hours.By 2016 there were approximately 150 million tons of plastic in the world's oceans. One paper from December 2014 estimated that over a quarter of a million tons of ocean plastic pollution was afloat."WasteShark also has the abilities to gather air and water quality data, remove chemicals out of the water such as oil, and heavy metals, and scan the seabed to read its depth and outlines," said Oliver Cunningham, one of the co-founders of RanMarine. "Fitted with a collision-avoidance system, the drone uses laser imaging detection and ranging technology to detect an object in its path and stop or back up if the object approaches.""Our drones are designed to move through a water system, whether it's around the perimeter (周边) or through the city itself. The drones are that last line of defense between the city and the open ocean," added Cunningham. "WasteSharks are operating in Dubai, South Africa and the Netherlands and cost $ 17, 000 for the remote-controlled model and just under $ 23, 000 for the autonomous model."Dubai-based operator Ecocoast has two WasteShark drones. Co-founder Dana Liparts says they will clean waterfronts for clients including hotels and environmental authorities and that Ecocoast' intention is to have the collected rubbish recycled or upcycled. However, Liparts argues that cleaning waterways doesn't have a one-size-fits-all solution and requires a combination of new technology, preventative measures and changing people's attitudes towards littering.（1）What do we know about the WasteShark?A. It can frighten sharks away.B. It is an ocean explorer.C. It is a rubbish collector.D. It can catch fish instead of people.（2）What does Paragraph 4 mainly tell us?A. The causes of ocean pollution.B. The dangers of using plastics.C. The severity of ocean garbage pollution.D. The importance of ocean protection.（3）What will the WasteShark do with an approaching object?A. Avoid crashing into it.B. Break it into pieces.C. Swallow it.D. Fly over it.（4）Which of the following ideas does Liparts agree with?A. The WasteShark should be used more widely.B. More measures should be taken to make water clean.C. The production cost of WasteSharks should be reduced.D. People should take a positive attitude to new technology.【答案】（1）C（2）C（3）A（4）B【解析】【分析】本文是一篇说明文，介绍一种水上无人机可以用于清理浮在水面上的垃圾。

高考英语阅读理解( 科普环保) 解题技巧及练习题一、高中英语阅读理解科普环保类1．犇犇阅读理解A study found wireless signals are able to pass through bags and suitcases to judge the sizes of dangerous metal objects and identify them." These items could include weapons, chemicals, laptops and batteries for bombs, "the research team said on Tuesday.Research suggested that Wi-Fi can now be used to estimate the volume of liquids such as water, acid, alcohol and other chemicals for explosive material. The study led by researchers at the Wireless Information Network Laboratory (WINLAB) in the School. of Engineering showed a wireless device with two to three antennas( 天线)that could be fitted in existing Wi-Fi networks.The detection system analyzes what happens when wireless signals go through and bounce off objects or materials. The approach, which the paper states, works by separating the wireless interference( 干扰)caused by two factors of objects-the material and shape." Most dangerous objects such as weapons are usually metal or liquid, which have significant interference," researchers said.When it was tested on a backpack, the accuracy rate topped 95 percent. "But the accuracy dropped to about 90 percent when objects inside bags are wrapped. And the tech could save lives if used in museums, stadiums, theme parks or schools," the team said, noting its design can inspect bags or luggage without being an exposure to privacy.It uses channel state information (CSI) that is readily available in low-cost Wi-Fi devices." This could have a great impact on protecting the public from dangerous objects," said Yingying Chen,a co-author of the study," There's a growing need for that now. In large public areas, it's hard toset up expensive screening equipment like what's in airports. Manpower is always needed to check bags and we want to develop a method to try to reduce manpower. ”The peer-reviewed study, which recently won a best paper award at the 2018 IEEE Conferenceon Communications and Network Security, is now published online." Future work will continue to focus on ameliorating the accuracy of identifying objects and imaging shapes and volumes," researchers said.（1）What does paragraph 3 talk about?A. The function of the technique.B. The way the device works.C. The principle the study is based on.D. The benefit of the study findings.（2）What's the advantage of the device?A. It saves people in danger of natural disasters.B. It passes through bags without damaging them.C. It uses antennas to pick up networks' signals.D. It protects personal information from being disturbed.（3）Why did the researchers study the device according to Yingying Chen?A. To save money and labour.B. To make full use of Wi-Fi.C. To protect passengers' privacy.D. To research dangerous objects.（4）Which of the following can replace the underlined word “ameliorating" in the lastparagraph?A. Confirming.B. Improving.C. Discovering.D. Examining.【答案】（1）B（2）D（3）A（4）B【解析】【分析】本是一篇说明文，介绍了研究人员发现，WiFi 可用于可用于安检。