The cold, wet weather of winter often puts out any wildfires that are still burning, but not in the far North areas, such as Alaska, Canada, and other parts of North America. Some forest fires just don’t die in these places. Think of the fires as “zombies” (僵尸): Scientists do. When summers are warmer than normal, some fires can hide through the winter. They burn dead plant matter and soils under snow. In May 2021, scientists reported their work to a scientific journal. The scientists saw that zombie fires are rare but they could become more common as the world warms, the study warns.
“Some years, new fires were starting very close to the previous year’s fire,” explains Rebecca Scholten. She studies Earth and environmental sciences at Vrije University Amsterdam in the Netherlands. The new fires made scientists wonder how often fires might survive the winter. The scientists started by combing through firefighter reports. Then they compared these with satellite images of Alaska and northern Canada. The scientists looked for fires that began close to fires from the year before. They also focused on blazes starting before the middle of summer. Random lightning or human actions spark most fires in the area, Scholten says. But those fires happen later in the year.
Zombie fires accounted for less than 1 percent of the total area burned by fires from 2002 to 2018. But it changed from year to year. Take 2008, for example. A zombie fire burned Alaska that year. It caused almost one-third of fire damage that year. One clear pattern emerged: Zombie fires were more likely to happen after very warm summers. High temperatures may allow fires to reach more deeply into the soil. Such deep burns are more likely to survive to spring.
The zombie fire threat could grow. The climate is warming. Forests in the far North already are warming faster. “We’re seeing more hot summers and more large fires and intense burning,” Scholten says. Plus, zombie fires could cause more issues. The fires release huge amounts of greenhouse gases. These trap heat in the Earth’s atmosphere. The atmosphere is a layer of gases that surround the Earth. Scholten’s research could help fire management. Firefighters would know to check for them after warm summers.
1. What may lead to zombie fires according to the passage?A.wet weather | B.hotter summers |
C.low temperatures | D.cold winters |
A.Where flames broke out provided the clue. |
B.Changing climate plays a role in the zombie fire threat. |
C.Zombie fires are less likely to happen after very warm summers. |
D.It is of little use comparing firefighter reports with satellite images. |
A.It is important to understand zombie fires. |
B.Zombie fires are likely to be under control soon. |
C.Firefighters cannot do much to stop the zombie fires. |
D.We still have much to learn about the warming climate. |
A.“Zombie“ wildfires do great damage to land |
B.“Zombie” wildfires release greenhouse gases |
C.“Zombie“ wildfires sparked by human actions |
D.“Zombie” wildfires reappear after wintering underground |
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【推荐1】The public nowadays has a misunderstanding of forest fires, believing that fire s should be kept out of every type of forest. Many of us can recall Smoky the Bear’s famous warning: “Remember, only YOU can prevent forest fires”. However, that’s not always the case. Under the right conditions, and when conducted safely, fire can create many environmental benefits as well as help prevent larger, uncontrollable wildfires.
After a forest fire, many wildlife species will move into recently burned areas to feed on these newly available foods. Some reptiles and amphibians such as the pine snake prefer forests frequently burned by fire. As Herbert Stoddard put it, “One of the most harmful things modern man has done to birds has been his attempt to exclude fire from fire-type pine(松树) forests. Within a few years most forests choke up with bushes, lose their prairie-like vegetation(草原般植被) and can no longer support birds dependent on periodic burning for their food supply and proper cover.”
If you are asked to picture the forest floor, what do you see? Pine needles, cones, leaves, branches might come to mind-all sources of fuel. If these fuel sources build up without any type of removal, the ‘fuel load’ can lead to fires catastrophic to forests and people alike. In contrast, prescribed fire can be used by forest professionals every couple of years to keep forest fuels at an appropriate and manageable level. They can also minimize the spread of pest insects and disease and remove unwanted tree and plant species. Plus, they can create and maintain important wildlife habitats rich in grasses and promote the growth of trees, wildflowers and other various plants.
Many organizations and agencies work to promote fire on the landscape when and where appropriate. Smoky Bear even has an updated warning: “Only You can Prevent Wildfires,” as the Forest Service has over the last few decades developed policies and procedures to include prescribed fire as a management tool, as well as continuing their work to prevent and fight wildfires.
1. Why did the author mention Smoky the Bear’s warning?A.To raise people’s awareness of forest protection. | B.To illustrate a conventional wisdom. |
C.To show the significance of fire prevention. | D.To introduce the topic of the passage. |
A.Forest bushes. | B.Fuel sources. | C.Periodic burning. | D.Pine forests. |
A.To keep the forest balance. | B.To keep the fuel rich in the forest. |
C.To put out wildfires. | D.To remove tree and plant species. |
A.Why Not Keep The Forest Fire Burning | B.Not All Forest Fires Are Created Equal |
C.Where There Is Smoke There Is A Fire | D.One Match Can Start A Forest Fire |
【推荐2】Can you survive an unannounced storm? Although there is expert broadcasting and we are equipped with cell phones, there’re still some instances(情况) when the violent weather takes us by surprise.
While most Atlantic hurricanes form off the coast of Africa giving plenty of early warning, sudden Caribbean and Gulf of Mexico hurricanes form and move rapidly in less than a day’s time, endangering everyone and everything in their path.
Oil workers were trapped off the shore when sudden storms appeared. Natural scientists have been stuck in coastal areas without storm warning. Ten years ago a Texas National Guard group was trapped on the beach by rain-forced flooding and had to ride out(经受的住) a major hurricane during a training exercise. There’ve been a few instances when travelers were trapped on an island or in a coastal area and unable to escape in time.
Escaping from the storm-threatened areas is generally a choice for most of us—but not for all. Each year thousands of islanders across the Caribbean face the danger of hurricanes without so much as a public shelter to hide in. Most ride out the storm in their homes.
But there’re a few things you can do to prepare yourself for some unexpected emergencies. Being prepared for the unexpected may be your best and only defense. If you’re headed outdoors for a few days or weeks, you should always carry a flashlight (手电筒) with extra batteries, a Beidou device (装置), and a basic medical box. If you’re traveling in your car, remember you may suffer high winds. You’d better not stay inside to avoid being blown away along with your car. Keeping your head and your courage up is essential to survival in any type of danger. Let common sense guide you and always be prepared for the worst.
1. According to the text, most Atlantic hurricanes ________.A.form in the Caribbean Sea | B.develop off the coast of Africa |
C.come from Gulf of Mexico | D.are from the Pacific Ocean |
A.People trapped by sudden storms. | B.The bad situations of oil workers. |
C.The Texas National Guard group. | D.The danger of traveling on an island. |
A.We can get through the storm because of the expert broadcasting. |
B.Being prepared for the unexpected is likely to be our best and only defense. |
C.Escaping from the storm-threatened areas is a choice for all of us in general. |
D.We should stay inside the car to avoid being blown away in high winds. |
A.To give some advice. | B.To encourage traveling. |
C.To give some warnings. | D.To understand the danger of storms. |
A.Science. | B.Sports. | C.Life. | D.Culture. |
【推荐3】Angus, Doris, Gabriel and Kamil are some of the 21 names that have been chosen to be given to storms in the UK in the 2016/17 season.
The Met Office, the UK's national weather service, decided to give storms boys' and girls 'names in 2015 in the same way as they did in America.
The Met Office hopes that naming big storms will make people more aware(意识到) of them and how dangerous they can be. Derrick Ryall, from the Met Office, said,“We have seen how naming storms elsewhere in the world raises people's awareness of storms before they break. ”
In the past,the same UK storm could be given different names by different organizations. “We noticed that many organizations during the last couple of winters started giving names to them.Think back to the St Jude's Day storm in 2013,and the so-called(所谓的)Hurricane Bawbag in Scotland in 2011.But it led to confusion(混淆),”a Met Office spokeswoman said.
According to the Met Office, there is a name for each letter of the whole alphabet (字母表),except for Q, U, X, Y and Z. That is the same as the naming tradition used in America. And not all storms will be big enough to get names-only those expected to cause great damage(损失)。
If there are more than 21 storms in a year,the Met Office will start again with another name beginning with “A”。 However, according to Met Office spokeswoman Lindsay Mears, "It's less possible we would get through the whole alphabet in one season. We had 14 storms in the very bad winter of 2013/14, and if the naming system had been in operation then we wouldn't have used the whole alphabet. ”
1. Why are storms in the UK named?A.To increase public awareness of them. |
B.B. To remind people of their short stay. |
C.To follow what other countries did. |
D.To meet the needs of its people. |
A.There are many storms to name in a year. |
B.organizations named storms differently |
C.some storms' names are similar to others' |
D.some storms' names are hard to understand |
A.Storms will be given names whatever their sizes. |
B.Serious storms will be given boys' names. |
C.21 letters will be used to begin the names. |
D.21 names will be given at most in a year. |
A.There are not too many big storms yearly. |
B.Action will be taken to prevent storms. |
C.There are usually 14 storms in a year. |
D.The naming system will not change. |
Jane Addams (1860 - 1935)
Addams helped the poor and worked for peace. She created shelters, education opportunities and services for people in need. In 1931, Addams became the first American woman to win the Nobel Peace Prize.
Rachel Carson (1907 - 1964)
Rachel Carson was born in the rural river town of Springdale, Pennsylvania in America. The popular 1962 book “Silent Spring” by Rachel Carson made people realize the dangers and the harmful effects (影响) of pollution on humans and on the world’s lakes and oceans.
Angela Merkel (1954 - )
In 2005, Germans chose Angela Merkel as their first woman head of the country. She had been a scientist in the past. As Germany’s leader, she has had an effect on the whole world.
Sandra Day O’Connor (1930 - )
When Sandra Day O’Connor finished her class at Stanford Law School, in 1952, she could not find work because she was a woman. However, she became the first woman to join the U.S. Supreme Court (最高法院) in 1981 after years of hard work.
Margaret Thatcher (1925 - )
In 1979, Margaret Thatcher became Britain’s first woman Prime Minister (首相). She served until 1990, which made her the first British leader to serve three terms in a row. Because of her high standards and strong will, people called her Britain’s Iron Lady.
Marie Curie (1867-1934)
Polish-born scientist Marie Curie discovered that some types of metal give off energy called radiation (辐射能). Her research led to new medical treatments and arms. She received the Nobel Prize in Physics in 1903 and in Chemistry in 1911.
1. Who once won the Nobel Prize?
A.Jane Addams and Marie Curie. |
B.Jane Addams and Margaret Thatcher. |
C.Marie Curie and Angela Merkel. |
D.Marie Curie and Rachel Carson. |
A.help the poor |
B.spread geographic knowledge |
C.protect the environment |
D.protect the rights of women |
A.Both of them were scientists before coming to power. |
B.Both of them are the first woman head of their country. |
C.Both of them are famous for being strict. |
D.Both of them have worked for three terms. |
A.Jane Addams. | B.Sandra Day O’Connor. |
C.Rachel Carson. | D.Margaret Thatcher. |
A.Great women | B.Famous scientists |
C.Strong leaders | D.Ways to success for women |
【推荐2】A snow leopard stared down from a steep rock high in the peaks of Mongolia. She was on the lookout for a snack. Noticing a wild goat below, the snow leopard rocketed down the mountainside. The wild goat struggled to escape. But with one 30-foot leap, the cat caught up. Seconds later, she was secured her meal and looked for a place to enjoy it.
These endangered cats are nearly impossible to see. Their spotted coats act as invisible cloaks(披风)by mixing into the rocky mountains of the 12 Central Asian countries where the cats live. The mountains the snow leopards call home are rough and extremely cold in the winter. But these cats have some amazing body parts that make living in the area no big deal. In addition to hiding them, a snow leopard’s soft, thick fur keeps it warm in the bitter cold.
Few humans have seen snow leopards in real life, but hunting scenes like the one above have been recorded on video. Snow leopard experts need to gather more information about the secretive cats’ lives to help protect them. To do that, researches use high-tech tools to spy on the shy animals. They gently trap the wild cats to put on satellite radio collars to know where the cats wander.
Even though snow leopards live in some of the most rugged mountains on Earth, people pose the biggest threat to their survival. Poachers(盗猎者)can sell a snow leopard’s hide and bones for thousands of dollars. Sheepherders(牧羊人)often kill any snow leopard that attacks their sheep. Hunters target goats, wild sheep, and other animals for food-removing important snow leopard food. The more scientists can learn about snow leopards, the better they can protect these rarely seen cats from humans who harm them.
1. What’s the function of the first paragraph?A.To lead to the theme of the passage. |
B.To describe how snow leopards hunt. |
C.To show the main food of snow leopards |
D.To show snow leopards have a good ability of adaption |
A.They don't go out in winter. |
B.They have unique body characters. |
C.Their living regions are large enough. |
D.Their thick fur can help camouflage (伪装). |
A.Spending more time searching for them. |
B.Trapping snow leopards to examine them. |
C.Using advanced technology to track them. |
D.Surfing the internet to get more information. |
A.The process of researchers’ job. |
B.The snow leopards, awful living conditions. |
C.The threat that humans pose to snow leopards. |
D.The reasons why some persons kill snow leopards. |
【推荐3】Is it time to put the brakes on the development of artificial intelligence? If you've quietly asked yourself that question, you're not alone. In late March, a group of AI experts signed an open letter calling for a six-month pause on the development of more powerful models than GPT-4; European researchers called for tighter AI regulations; and long-time AI researcher Yudkowsky demanded a complete shutdown of AI development.
Meanwhile, the industry shows no sign of slowing down. In March, a senior AI executive at Microsoft spoke of “very, very high” pressure from chief executive to get GPT-4 and other new models to the public “at a very high speed ”. GPT-4 is much larger and has been trained on significantly more data. Like other large language models, GPT-4 works by guessing the next word in response to prompts(提示). In tests, it passed legal and medical exams, and can write software better than professionals in many cases. And its full range of abilities is yet to be discovered.
GPT-4 and models like it are likely to have huge effects across many layers of society. They could facilitate personalized phishing(网络钓鱼) attacks, produce disinformation at scale, and be used to hack through the net -work security around computer systems. Open AI's own research suggests models like GPT-4 are “general-purpose technologies” which will influence 80 percent of the US workforce. Professions such as customer services, primary translations and editing, and security guard will be greatly impacted. Moreover, technology is accelerating much faster than our ability to understand and regulate it. If we're not careful, it will also drive changes that are too fast for safety. The US sociologist E. O. Wilson described the dangers of change like so: “The real problem of humanity is the following: we have Paleolithic(旧石器时代的) emotions, medieval(中世纪的) institutions and god-like technology.”
I believe a wise course of action is to slow down and think about where we want to take these technologies. It is not about stopping, but rather moving at a sustainable pace of progress. We can choose to steer this technology, rather than assume it has a life of its own we can't control.
1. How is the first paragraph mainly developed?A.By listing reasons. |
B.By giving examples. |
C.By making comparisons. |
D.By analyzing cause and effect. |
A.It has no match in software writing. |
B.AI experts have stopped its development. |
C.We don't have a clear picture of what it can do. |
D.It works by creating the next word with no need for prompts. |
A.We manage to keep up with AI Technology. |
B.We can be taken back to ancient times by AI Technology. |
C.AI Technology is developing too fast and beyond our control. |
D.AI Technology has a minor impact on different fields of society. |
A.Time to Adjust to AI | B.Time to Go Slow on AI |
C.An Urgent Stop to AI | D.A Significant Progress of AI |