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题型:阅读理解-阅读单选 难度:0.65 引用次数:207 题号:16998294

The State of California is depending on its forests to help cut down planet-warming CO2. But that climate-change strategy may be risky, as new research from the University of California, Irvine(UCI)reports that trees in California’s mountains and open spaces are dying from wildfires and other pressures — and fewer new trees are filling the blank.

“The forests are not keeping up with these large fires,” said study co-author James Randerson, the Ralph J. and Carol M. Cicerone Professor of Earth system science at UCI. Acrossthe whole state, tree cover area has dropped 6.7% since 1985. “These are big changes in lessthan forty years,” he said. It’s the first time that researchers have been able to measure tree population fall in California, and find out the reasons(wildfires and woodcutting).

For the study, the UCI-led team used satellite data from the USGS and NASA’s Landsat mission to study plant changes between 1985 and 2021. They found that one of the most obvious falls in tree cover was in southern California, where 14% of the tree population in local mountain had disappeared, maybe everlastingly.

“The ability. of forests to recover(恢复)from fire appears to be dwindling in the south,” said Jonathan Wang, a researcher in Randerson’s research group, who led the study coming out in AGU Advances. “At the same time, the state’s coverage of bushes and grasses is rising, which could mean more everlasting ecosystem shifts(生态系统转化).”

“The speed and scale of fall in tree cover is different across the state. Tree cover in the Sierra Nevada, for example, stayed relatively unchanged until around 2010, then began dropping suddenly. Fortunately, in the north, there’s plenty of recovery after fire,” said Wang, perhaps because of the area’s higher rainfall and cooler temperatures. “This threat(威胁) to California’s climate solutions isn’t going away anytime soon,” Wang said. “We might be entering a new age of bigger fire and vulnerable(易受损的) forests.”

1. What mainly helped California cut down CO2?
A.Rich forests.B.Less vehicles.
C.Energy saving.D.Fine weather.
2. What has caused the drop of tree cover in the past few years?
A.Poor soil.
B.Continual floods.
C.High demand for farmland and food.
D.Large wildfires and people’s cutting trees.
3. What does the underlined word “dwindling” in paragraph 4 mean?
A.Suitable.B.Falling.C.Obvious.D.Boring.
4. Which is the most suitable title for the text?
A.California’s trees will die out in the future
B.California’s environment will face a big challenge
C.The reasonfor California wildfires has been found out
D.Wildfires seriously threaten California’s tree cover

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文章大意:这是一篇说明文。主要介绍了联合国报告说未来几年全球野火将增加,各国政府采取措施扑灭火灾,但是没能采取足够的措施消除火灾发生的原因。

【推荐1】A new United Nations report says a warming planet and changes to land use suggest an increase in wildfires around the world in the coming years. The report says these wildfires will cause an increase in smoke pollution and other problems that world governments are not prepared for.

The western United States, central India and eastern Australia are already seeing more wildfires. Even areas once considered safe from major fires, such as the Arctic, will very likely experience a major increase in burning. Tropical (热带的) forests in Indonesia and the southern Amazon of South America are also likely to see increased wildfires, according to the report.

The report describes n worsening series of events. Climate change will bring more dry periods and higher temperatures that make it easy for fires to start and spread. Those fires then give off more climate-changing carbon into the atmosphere as they burn through forests. Some areas, including parts of Africa, are seeing a fall in wildfires. That is because more land is being used for agriculture.

But UN researchers said many nations continue to spend too much time and money fighting fires and not enough trying to get rid of the causes of fires. Land use changes can make the fires worse. The report said the remains left behind by the logging (伐木) industry can easily burn. And some forests are purposely burned to clear land for farming.

Poor communities are often hit hardest by fires. Wildfires can worsen water quality, destroy crops and reduce land available to grow food. They affect people’s jobs and their economic situation. Fires are as harmful as floods and droughts.

UN researchers also called for more careful attention to the dangers from wildfire smoke inhalation, which can affect tens of millions of people’s health each year. Smoke from major wildfires can travel thousands of kilometers across international borders.

1. What does the second paragraph show us?
A.Main reasons for some wildfires.B.The differences between wildfires.
C.The importance of the report.D.Some findings of the report.
2. Why are wildfires in some African areas dropping?
A.Forests are well protected.
B.Land for agriculture is increasing.
C.Temperatures are not so high.
D.Farmers are more careful of fires.
3. What can he inferred from the words of UN researchers?
A.Many nations fail to put out fires.
B.Too much money is wasted on fires.
C.More should be done to prevent fires.
D.Farmland should be turned into forests.
4. What does the underlined word “inhalation” in the last paragraph probably mean?
A.Turning up.B.Breathing in.
C.Gathering together.D.Giving off.
2022-05-13更新 | 19次组卷
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【推荐2】As a child, I had spent my holidays travelling our village in Bangladesh — running across the rice fields or farms and fishing in lakes. But, this had started to wear off as a teen. One thing I remember about that trip was when we were only about half an hour from our village, we had to get out of our car. The road in front of us was completely under water. We all got on a bamboo boat for another two or three hours.

That was 15 years ago — the last time I visited our village. One by one, many other villagers left there. But my father has been working hard to build it up. He doesn’t want it to be lost.

Yes, we should protect our home. But there is something else to think about: climate crisis (气候危机). Bangladesh is at the centre of the climate crisis — it is hit by floods, droughts, storms and other natural disasters. “I jokingly say, Bangladesh is God’s laboratory for natural disasters,” says Prof Ainun Nishat, an expert on climate change from Bangladesh.

The period from June to October sees heavy rains. But the rainfall time is becoming more erratic (无常的). In 2020, Sylhet, my hometown, was hit by huge floods that affected thousands of families, whose homes were swept away. In fact, over a quarter of the country was flooded. Nearly 1.3 million homes were damaged, and hundreds of people died.

The weather is getting more extreme (极端的). It is getting too hot. And the supply of water can’t be relied upon, leaving the land getting drier.

Although people have worries about droughts and floods, unlike in the past, the country is well-prepared to deal with them. Prof Nishat says, “Maybe 20, 30 years back we depended on external (外部的) support to return to normal from any natural disaster, but now it’s different. The country has developed, and we suffered these disasters many times, so the people are one of the most prepared.”

1. What do the underlined words “wear off” in Paragraph 1 probably mean?
A.Advance.B.Make sense.
C.Disappear.D.Lose control.
2. What do we know about Bangladesh?
A.It is affected by many disasters.
B.It needs more people to build it up.
C.People living there lead an unhappy life.
D.Experts are studying why the climate changes there.
3. Why does the author mention the flood happening in 2020?
A.To prove floods are difficult to avoid.
B.To show the effects of climate change.
C.To prove floods are frequent in Bangladesh.
D.To show the great damage caused by floods.
4. What do Prof Nishat’s words in the last paragraph show?
A.People in Bangladesh think the external support is unnecessary.
B.People in Bangladesh try to rebuild their homes on their own.
C.Bangladesh needs more support to aid its development.
D.Bangladesh is trying hard to deal with climate change.
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【推荐3】How to Survive a Tsunami

A tsunami is a series of destructive and dangerous waves that are typically caused by earthquakes. If you live in a tsunami hazard region, make sure you know what to do in the unfortunate event of a tsunami.     1    

1. Evacuate on foot if possible.

Bridges and roads might be damaged or blocked after an earthquake. Whether there is an official tsunami warning or you live in a tsunami hazard zone and an earthquake just happened, immediately start moving on foot.     2    This helps you avoid getting stuck in a car in a dangerous location.

2.     3    

In some cases, you might not have time to evacuate. If you don’t have time to get away, go up to a third floor or higher in a strong building. Even better, try to get on the roof of the tallest, strongest building you can find. If you’re right on the coast, there might be a tall tsunami evacuation tower nearby. Look for evacuation route signs and follow them to the tower, then climb to the top.

3. Grab something floating if you’re in the water.

This can help keep you safe if you get caught by a tsunami’s waves.     4     Grab the object and hold on tightly while you get carried by the waves.

4.     5    

Tsunami activity can continue for up to 8 hours or longer. Stay away from the coast and on high ground for this period to play it safe. Listen to announcements from officials and only move when they say it’s safe to do so.

You may be stressed out and worried about loved ones, but you must stay where you are and try to remain calm. Don’t put your life at risk to try to meet up with someone in another area.

A.Look for a boat to stay on.
B.Walk or run towards safety quickly.
C.Stay in your safe spot for at least 8 hours.
D.Climb to the top of a building if you are trapped.
E.Here are some ways to react and survive a tsunami.
F.Look for something strong like a tree, a door or a life raft.
G.Join the rescue team in order to search for your loved ones.
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