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當(dāng)前位置： 2022-2023學(xué)年廣東省廣州市天河區(qū)天省實驗學(xué)校高二（上）期末英語試卷> 試題詳情

    A smoke bomb from a party started a major blaze （火焰） near Los Angeles in September，just one of many recent wildfires ignited （引燃） by people.Now，an analysis of satellite data shows human-caused blazes spread much faster and kill more trees than ones ignited by lightning.
    Fire has always been a part of California's natural history.But several centuries of human settlement have created new conditions that promote its spread.Studies have shown human ignition is to blame for 84% of all wildfires in the United States，and 97% of all those that threaten homes.
    Human-caused fires always seemed more extreme，says Stijn Hantson，a fire ecologist at the University of California，Irvine，who led the new research.But measurements of how fast they spread and their impacts on ecosystems （生態(tài)系統(tǒng)） in California had not been explored，he notes.
    To examine those differences，Hantson and his colleagues analyzed satellite data for 214 wildfires in California between 2012 and 2018.Human-caused fires typically spread about 1.83 kilometers per day，more than twice as fast as lightning-ignited burns，the team reports.The faster spreading fires also burned more violently and killed "double or triple" the trees as lightning-caused ones.
    However，there is no fundamental difference in the chemistry of a human-caused blaze. "A fire is a fire，" Hantson says. "It's the surrounding things that matter." Causes of fires ranging from improperly thrown cigarettes to sparking （冒火花） power lines could ignite a blaze on any given day，he says，while lightning strikes and dry thunderstorms only happen seasonally.
    The researchers tracked meteorological data and found that human-caused fires were more likely to start on days with extreme weather conditions，and were more associated with drier，less-forested landscapes.This adds to scientists' understanding of how humans are extending the fire season，says Nathan Mietkiewicz，an ecologist with the National Ecological Observation Network.

（1）The author uses some data in paragraph 2 to show that

.
A．wildfires are mostly caused by humans
B．most wildfires threaten people's homes
C．wildfire is a part of California's natural history
D．wildfires break out frequently in the United States
（2）What's the purpose of Hantson's research？

A．To prove how extreme human-caused fires are.
B．To find out the causes and solutions of wildfires.
C．To explore the speed and effects of wildfires caused by humans.
D．To examine the differences between a human-caused blaze and a nature-caused one.
（3）How is the result presented in paragraph 4？

A．By giving examples.
B．By making comparisons.
C．By analyzing cause and effect.
D．By giving definitions.
（4）What can be inferred from the last two paragraphs？

A．Human-caused fires and lightning-caused fires are basically different.
B．Lightning strikes and thunderstorms can always lead to wildfires.
C．Wildfires only happen in dry，less-forested areas.
D．Humans are to blame for the extended fire season.

【考點】說明文；災(zāi)害防范．

【答案】A；C；B；D

【解答】

【點評】

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發(fā)布：2024/7/17 8:0:9組卷：8引用：4難度：0.5

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（1）From the text，we know water can carry

.
A．energy and fibre in our bodies
B．fruit，vegetables and fish in our bodies
C．sugar and fat out of our bodies
D．poisons and waste out of our bodies
（2）Lack of water caused many people to put on weight because

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A．It makes them hungry
B．they think they are hungry and eat too much
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（3）Doctors suggest that we should

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A．eat less food and drink less water
B．not eat food and just drink water
C．eat less food and drink more water
D．eat more food and drink more water
（4）Which of the following is NOT mentioned in the text？

A．People should drink water and not eat fruit.
B．Some health problems start because of a lack of water.
C．Fruit provides us with energy and fiber .
D．Drinking more water may stop people from overeating.
發(fā)布：2024/9/22 4:0:8組卷：2引用：2難度：0.6
解析
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Kids love listening to their parents read，even as they get older，so don't stop reading aloud to your children just because they can read on their own.This is a perfect opportunity to challenge their abilities，vocabulary and worldviews by reading books.
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Ask every family member，even the youngest，what they have read that day and what they've learned from it.This will arouse discussion and debate about the issues raised in the books.
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發(fā)布：2024/9/21 3:0:11組卷：0引用：1難度：0.5
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發(fā)布：2024/9/21 3:0:11組卷：7引用：3難度：0.5
解析

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