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Landslides of ash, gas and rock that flow out downhill during volcanic eruptions may be even more dangerous than scientists had realized.

Laboratory and field measurements show pulses of high pressure form within these slides, known as pyroclastic (火山碎屑的) flows. Those pressures can be far stronger, and more destructive, than disaster evaluations typically assume. “It’s not a small difference,” says Cert Lube, a volcanologist at Massey University in Palmerston North, New Zealand. Conventional disaster evaluations might suggest a certain flow will only burst windows, but he says, “When actually, the pressures are so strong, they knock down the walls of the building.”

Pyroclastic flows are the deadliest volcanic disaster, in part because of the pressures they cause. Due to their violent nature, researchers often have to evaluate average pressures in the flows using computer simulations (模拟) based on measurements of geologic deposits left by past flows.

At Massey University in Palmerston North, New Zealand, researchers freed mixtures of hot rock, ash and gas down a channel to copy volcanic landslides known as pyroclastic flows. These pyroclastic flows have an inner rhythm (节奏) that makes them especially destructive. To directly study the inner workings of these forces of nature, Lube and colleagues reproduced smaller versions of the flows in experiments, measuring the destructive power. That let the team calculate the pressures inside the flows. The researchers also analyzed the first measurements of pressures in natural flows, collected in 2019, when pyroclastic flows burst from the Whakaari volcano and swallowed a set of sensors.

To the researchers’ surprise, pressures in the flows shook rhythmically. These pressure pulses would successively damage barriers like blows from an electric drill, Lube says. The pulses sometimes smashed more than three times as hard as the average pressure evaluates typically suggested by conventional simulations.

【小题1】Why do researchers use computers to simulate pyroclastic flows?
A.To find out their inner rhythm.B.To evaluate their violent nature.
C.To figure out their average pressures.D.To copy the scene of volcanic landslides.
【小题2】What does the fourth paragraph focus on?
A.How to prepare simulation experiment.
B.How to carry out the simulation experiment.
C.Why to conduct the simulation experiment.
D.Why to measure the inner rhythm of pyroclastic flows.
【小题3】What does the underlined word “smashed” in Paragraph 5 mean?
A.Crashed.B.Bombed.C.Conflicted.D.Increased.
【小题4】What’s the most suitable title for the text?
A.A Well-known LandslideB.The Deadliest Volcanic Disaster
C.More Destructive Pyroclastic FlowsD.A Pyroclastic Flows Simulation Experiment
2022·吉林长春·模拟预测
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The entire country struggled with the unprecedented heat of the July 2022 heatwave, but for the disabled, the heat hit even harder. The climate crisis is a threat to everyone’s health, but according toa report in 2021, people with disabilities are more vulnerable to the extreme weather events and natural disasters that result from the climate crisis.

Professor Kristie Ebi of the Centre for Health and the Global at the University of Washington, described the topic of heatwaves and disabled people as being an important issue. “Groups at higher risk during periods of high temperature include people with chronic(慢性的) medical conditions, people who take certain medications that can reduce the ability of the body to sweat, and the “disabled”, notes Ebi, going on to describe the different threats that heatwaves pose for different types of disabilities. Ebi notes the difficulty people with mobility issues or blindness may have with accessing services, such as cooling shelters, Ebi also comments on the importance of making messaging on the dangers of high temperatures accessible to those with learning disabilities or to deaf people,“ Some studies suggest higher rates of suicide and other mental health issues during heatwaves, requiring targeted help for those with mental disabilities,” she added.

Ailsa Speak, a disability and lifestyle blogger, experiences uncontrollable movements in the heat due to her cerebral palsy (脑瘫) “As you can imagine, when my involuntary movements increase, I get even hotter. It’s just a painful circle really.

In the absence of a concrete set of plans for people with disabilities during the climate crisis and extreme weather events, people with disabilities continue to be at increased risk of heat-related disease.

To prevent future death and destruction, the Climate Change Committee CCC), an independent organization tackling climate change, advocates for adaptation planning, as the temperature is set torise further due to the climate crisis and global warming. The CCC’s 2022 report on the health risks of overheating offers adaptation options to the government to ensure that buildings are fit for future climate change. Nevertheless, the publication does not offer specific advice about people with disabilities and overheating, which thus remains to be discussed promptly and thoroughly.

【小题1】The underlined word “vulnerable” in Paragraph 1 possibly means
A.defensiveB.delicateC.experiencedD.adaptable
【小题2】Which of the following would Professor Ebi most probably agree with?
A.Heatwaves make people with chronic diseases suffer most.
B.The mentally disabled have no access to cooling shelter.
C.Some disabled people are ill-informed about the risks of heatwaves.
D.Mobility disability contributes to higher risk of suicide in the heatwaves.
【小题3】Why does the author mention Ailsa Speak?
A.To share a disabled blogger’s painful life.
B.To show what a terrible disease cerebral palsy is.
C.To illustrate the trouble the disabled have in the heat.
D.To prove the never-before-seen highs in temperature.
【小题4】The author’s purpose of writing this passage is to
A.stress the urgent need to care for the disabled in the heat
B.suggest methods of helping the disabled in heatwaves
C.tell readers how severe the July 2022 heatwave was
D.introduce adaptation alternatives for future buildings

Ethiopia’s eastern lowlands bordering Somalia are suffering through a severe drought. The rainy season was late and not enough, causing great losses among local livestock herds. Coming on the heels of two previous dry years in Ethiopia, the drought of 2017 compounded already serious situation in the country. As a result, many families in the country’s Somali region are experiencing chronic (长期的) food insecurity and concerning rates of a lack of nutrition.

The United States, Ethiopia’s largest donor of emergency and development aid, continues to deliver a large-scale humanitarian response. In late August, USAID Administrator Mark Green announced that in order to help relieve the terrible humanitarian situation, the United States will deliver 91 million dollars in additional humanitarian assistance for those Ethiopians who are even now struggling with severe food insecurity and malnutrition (营养不良).

“This funding will provide additional emergency food assistance and vital medical care,” he said.

A day earlier, Mr. Green announced that Ethiopia had been chosen as one of a dozen countries that will participate in the second period of the Feed the Future Initiative. This 7-year old program aims to reduce global hunger, poverty, and under-nutrition by focusing on smallholder farmers, increasing investments in agriculture, and supporting country-owned plans for improving food security and nutrition while creating opportunities for economic growth and trade. In this way, the United States hopes to help strengthen Ethiopia’s resilience (恢复力) to climatic shocks.

I don’t view development in humanitarian assistance as a gift or a handout. I view it as a hand up. We want to help people stand on their own two feet and build their own brighter futures, and that’s what I hope our assistance can play a useful role in.” said USAID Administrator Green.

【小题1】What does the underlined word “compounded” in Paragraph 1 mean?
A.Mixed.B.Changed.
C.Formed.D.Worsened.
【小题2】What is the purpose of the Feed the Future Initiative?
A.To help build Ethiopian brighter futures.
B.To deliver humanitarian assistance to Ethiopia.
C.To reduce hunger, poverty mid under-nutrition worldwide.
D.To help strengthen global resilience to severe droughts.
【小题3】What can be learned according to the text?
A.USAID is expected to help Ethiopians build brighter futures.
B.The United States will send 91 billion dollars to Ethiopia.
C.USAID is considered as a handout by Administrator Green.
D.Ethiopians are now suffering no nutrition.
【小题4】What is the best title for the text?
A.The Feed the Future Initiative Program
B.More US Humanitarian Aid for Ethiopia
C.Severe Droughts in Ethiopia
D.Food Insecurity and Malnutrition in Ethiopia

In the foot hills of Chianti Classico in central Italy, Elena Lapini and her husband make their way down neat rows of grapevines and inspect their fruit. The grapes are ripening too fast under the hot sun. Too much bronzing on the vine, they will wither into raisins (葡萄干), turning the wine into a sour, unpleasant blend. Getting the harvest date right is crucial for this reason, but climate change is making it increasingly hard.

An analysis of harvest dates going back to 1354 in France found that air temperatures have increased so much that grapes are now harvested two weeks earlier than in medieval times. Elizabeth Wolkovich, a biologist researching the impact of climate change on vine yards, says rising temperatures are changing the taste of wine itself.

For some cooler regions, warming conditions have allowed winemakers to grow more flavorful berries and enjoy longer growing seasons. Germany, best known for its Riesling white wines, has become more favorable to heat-loving grapes. Parts of Britain where it rains frequently now have the perfect climate to make sparkling wines, giving British bubbly from Kent and Sussex a fair fight against French champagne. But in warmer places like France, Italy and Spain ripening grapes at a higher temperature means more sugar and less acid in the berry, making high-alcohol, honey-like wines.

Climate change is also threatening the world's wine supply. In April producers in Italy and France found themselves lighting thousands of bucket-sized candles to warm the air against a killer frost that threatened to destroy buds emerging with the first warm spells of spring. In some regions the frost wiped out 90% of the crop, resulting in an estimated €2bn loss, French officials described it as “probably the greatest agricultural catastrophe at the beginning of the 21st century”.

【小题1】What does the underlined word “it” in paragraph 1 refer to?
A.Controlling the growing speed.B.Figuring out the exact harvest date.
C.Increasing the output of the grapes.D.Improving the taste of wine for better.
【小题2】What is caused by climate change?
A.Sweeter grapes in Italy.
B.Low-alcohol wines in France.
C.Longer harvesting seasons in Germany.
D.Threatened berry supply over the world.
【小题3】Why do the wine producers in Italy and France light thousands of huge candles?
A.To speed up the ripening course.
B.To produce more tasty and healthy wine.
C.To give out light for producers to watch grapes.
D.To increase the temperature to protect the buds from frost.
【小题4】In which section of a magazine may this text appear?
A.Nature and Environment.B.Science and Technology.
C.Leisure and Entertainment.D.Life and Health.

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