Drones（无人机）equipped with hyperspectral and thermal sensors will be applied in Italy to spot trees infected with Xylella fastidiosa，a deadly bacterium that has been destroying the country's olive crops for almost a decade.
The sensors will be able to detect signs of early infection that cannot be noticed easily，such as slight changes in the color of leaves，allowing farmers to select affected trees and prevent outbreaks.More than 300，000 trees will be examined using the new drone technology in the next few months.
"This technology has the potential to give the Italian government a major advantage in the fight against Xylella，"says Manuela，a researcher of the project."We tend to realize far too late if a plant is infected-these drone sensors will alow us to spot and prevent outbreaks rather than just react to them."
Early detection strategies like this are key for controlling Xylella，which is spread by spitle bugs that feed on infected plants，taking in bacteria and passing them to healthy plants nearby.Once the bacteria have infected a plant，they block the xylem vessels that transport water through the plant，cutting off its ability to absorb water and，eventually，killing it.
"Xylella is particularly dangerous because it has many different natural hosts through which it can spread，"says Andrea Maiorano，a plant health expert at the European Food Safety Authority in Italy."There are hundreds of different plant species that can host it."
According to the law，as soon as a tree is found to be infected with Xylella，it must immediately be cut down-along with all species easily affected within a 50-metre radius（半径）.A 2.5-kilometre zone around the infected plant is then closely monitored to prevent spread to surrounding trees.The remote-detection drones will ensure that any infected tree in these areas is diagnosed and recognized quicker than ever before.
The hope is that this containment strategy in infected regions can buy time for the rest of the country's olive plantations until a cure can be found.
（1）What is the problem with the olive crops in Italy？ AA
A．Bacteria infection.
B．Lack of water.
C．Soil pollution.
D．Backward technology.
（2）How do drones help the farmers？ DD
A．By curing the affected trees.
B．By changing the color of leaves.
C．By monitoring the quality of trees.
D．By discovering the unnoticed infection.
（3）What is paragraph 4 mainly about？ AA
A．The danger of Xylella.
B．The key of the strategies.
C．The cause of the bacteria.
D．The feature of the drones.
（4）What can we expect of the drones in the future？ CC
A．They will prevent trees from being infected.
B．They will ensure the recognition of the plants.
C．They can speed up the diagnosis of diseased trees.
D．They might help increase country's olive plantations.
【答案】A；D；A；C
【解答】
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发布：2024/4/20 14:35:0组卷：1引用：1难度：0.5
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But despite this，our children are growing up naturedeprived（剥夺）.I spent my boyhood climbing trees.These days，children are robbed of the ancient freedom，due to problems like crime，traffic，the loss of the open space and strange new ideas about what is best for children，that is to say，things that can be bought，rather than things that can be found.
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The life of old people is measurably better when they have access to nature.The increasing concern for the growing population of old people is in quality rather than quantity of years.And study after study finds that a garden is the single most important thing in finding that quality.Even problems with crime and aggressive behaviour are reduced when there is contact with the natural world.
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（1）According to the author，people enjoyto seek nature.
A．jogging on the street
B．running in the gym
C．shopping in the supermarket
D．sitting in the garden
（2）From the second paragraph，we can see that.
A．Children don't want to approach nature
B．children probably spend less time in nature nowadays
C．climbing trees will certainly do good to the children
D．children tend to be happier as a result of their material satisfaction
（3）In what way do people benefit from their contact with nature？
A．Children with ADHD can be cured.
B．Children's performance at school is greatly improved.
C．Problems with crime and violent behavior will easily be solved.
D．A garden nearby improves the quality of old people's life.
（4）what is the main idea of this passage？
A．Access to nature improves our life.
B．Nature treats children for ADHD.
C．Getting close to nature reduces crime.
D．Man can't live without natural areas.发布：2025/1/6 16:30:6组卷：0引用：1难度：0.5 -
2．It is widely believed that biodiversity（生物多样性）is promoted to save species.But in reality species exist only as part of ecosystems and cannot survive unless their ecosystems are protected along with as much as possible of the diversity they contain.
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For a number of environmentalist，protecting the world's 25 biodiversity hotspots（热点地区）is critical to saving habitats and species.But many hotspots are endangered already，having lost up to three-quarters of their original plants.
The poor state of most biodiversity hotspots results directly from population growth and migration（迁移） into these areas.A study found that by the mid-1990s around 1.1 billion people lived in these hotspots.Moreover，the annual population growth rate in these areas was 1.8%，higher than the global average of 1.4%.The PAI report concluded that human-related environmental changes will continue to put pressure on hotspots.Therefore，keeping biodiversity requires paying close attention to population size.
Protecting hotspots is not simply a matter of putting up fences and employing guards.The best results are achieved when local people are educated about the value of wildlife，and actually gain a share of the benefits from eco-tourism.Only then do they have a chance to see the benefits of protecting hotpots.
（1）What can we infer from paragraph 1？
A．The loss of any species can affect humans.
B．Endangered species are paid more attention to by humans.
C．Species can still survive when their ecosystems are destroyed.
D．Ecosystem protection is as important as diversity protection.
（2）What does the underlined word "ecocide" in paragraph 2 mean？
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（3）What's the direct cause of the terrible state of the hotspots？
A．Population growth in hotpots.
B．Migration out of these areas.
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（4）What's the author's opinion on protecting the hotspots？
A．It's simple to carry out.
B．It leads to the increase of tourists.
C．It's closely connected with local people.
D．It suggests that the local people are well educated.发布：2025/1/6 16:30:6组卷：0引用：1难度：0.5 -
3．New editions of Roald Dahl's classic books，such as Charlie and the Chocolate Factory and Matilda，are now available in bookstores.Some passages relating to weight，mental health，gender and race were changed.The changes made by Puffin Books，a division of Penguin Random House，first were reported by Britain's Daily Telegraph newspaper.
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（1）What is the reason for the changes to Dahl's books？
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B．To review the language used and add details.
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（2）What might the underlined word in Paragraph 6 probably mean？
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D．Misrepresenting.
（3）Which of the following may Laura Hackett agree？
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（4）What might be the proper title of the passage？
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A．To persuade readers to buy Roald Dahl's classic books.
B．To entertain readers by the changes of Roald Dahl's books.
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D．To inform diverse views on the changes of Roald DahI's books.发布：2025/1/30 8:0:1组卷：5引用：1难度：0.4
