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题型:阅读理解-阅读单选 难度:0.65 引用次数:133 题号:12549425

Plastic pollution has long been a problem, but now it's gotten to a new height-literally.

Microplastics, referring to plastic fragments and particles less than 5 millimeters in diameter, have been found on Mount Qomolangma as high as 8,440 meters above sea level, just 408.86 meters below the peak of the mountain, according to a recent study published in the journal One Earth.

“These are the highest microplastics ever discovered so far, “ lead author Imogen Napper from the University of Plymouth, UK, said in a statement.

Scientists collected snow and water samples from 19 different locations from 4, 200 meters above sea level all the way up to the top of Mount Qomolangma. They found microplastics in all the water samples and part of the snow samples. The most polluted sample was from the Base Camp in Nepal, where most human activity on the mountain is concentrated. It had 79 particles of microplastics per liter of snow.

But how have these fragments made it all this way and in such a great abundance? The answer is apparent-human activities. It is climbers who bring plastic products to the mountain. Even if they don't litter, just walking for 20 minutes or opening a bottle of water can release microplastics into the environment.

Even covered in ice, the Arctic is also a victim of plastic pollution. A 2020 report published in Nature suggests that there are 2,000 to 17,000 plastic particles per cubic meter in Arctic ice cores. Experts think microplastics may be transported by air and then reach the North Pole in snowfall.

“What we don't yet fully know is the potential problems these tiny pieces of plastic could be having to ecosystems," said Christian Dunn of Bangor University , UK.

Then what can we do? “We need to start focusing on deeper technological solutions that focus on microplastics, like changing fabric design and include natural fibers instead of plastic when possible, " Napper said.

1. Where did Napper's team find the microplastics?
A.At 408.86 meters below the top of Mount Qomolangma.
B.In all water and snow samples collected.
C.At 4,200 meters above the Everest Base Camp.
D.At the foot of Mount Qomolangma.
2. Which of the following may protect Mount Qomolangma from microplastics?
A.Stopping littering.B.Avoiding bottled water.
C.Limiting use of equipment.D.Forbidding climbing at all.
3. How do experts think plastic pollution reached the Arctic?
A.By planes flying in the airB.By wind from other places.
C.By humans traveling thereD.By huge tides in the sea.
4. What did Napper suggest?
A.Promoting new styles of clothes.B.Improving technology for ecosystems.
C.Replacing plastic with natural fibers.D.Researching microplastics' harm.
2021·辽宁铁岭·一模 查看更多[2]

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【推荐1】Scientists in Antarctica have recorded,for the first time,unusually warm water beneath a glacier (冰川)the size of Florida that is already melting and contributing to a rise in sea levels.

The researchers,working on the Thwaites Glacier,recorded water temperatures at the base of the ice of more than 2℃,above the normal freezing point.Critically,the measurements were taken at the glacier's grounding line,the area where it transforms from resting wholly on bedrock to spreading out on the sea as ice shelves.It is unclear how fast the glacier is getting worse:Studies have forecast its total collapse in a century or in a few decades.The presence of warm water in the grounding line may support estimates at the faster range.

That is worthy of attention because the Thwaites,along with the Pine Island Glacier and several smaller glaciers, acts as a brake on part of the much larger West Antarctic Ice Sheet, which , if melted, would raise the world's oceans by more than a meter over centuries,an amount that would put many coastal cities underwater.

“Warm waters in this part of the world,as remote as they may seem,should serve as a warning to all of us about the potential terrible changes to the planet brought about by climate change,” said David Holland, director of New York University's Environmental Fluid Dynamics Laboratory.

Glaciologists have previously raised alarm over the presence of warm water melting the Thwaites from below.This is the first time,though,that warm waters have been measured at the glacier's grounding line.

To observe activity beneath the glacier,Dr.Holland's team drilled a hole -about 30 centimeters wide and 600 meters deep-from the surface to the bottom and then placed equipment that measures water temperature and ocean turbulence,or the mixing of freshwater from the glacier and salty ocean water.Collecting the data took about 96 hours in subzero weather.Warm waters beneath the Thwaites are actively melting it, the team found.

While scientists may not yet be able to definitively predict how soon glaciers like the Thwaites will melt, human-caused climate change is a key factor.The biggest predictor of “how much ice we will lose and how quickly we will lose it,”Dr.Holland said,”is human action.”

1. What does warm water found in the glacier's grounding line indicate?
A.Sea levels should be remeasured.
B.It may take a century for the glacier to melt.
C.The grounding line is getting shorter.
D.The glacier might disappear sooner
2. The Thwaites and other glaciers are important because ______.
A.they hold back ice
B.they are extremely large
C.they are located at bedrocks
D.they are collapsing
3. What can be inferred from the passage about the researchers’ viewpoints?
A.We can predict how much ice can be kept.
B.Human beings are to blame for the loss of ice.
C.Glaciers serve a more important purpose than expected.
D.More data needs to be collected to support the estimates.
4. What is the passage mainly about?
A.The efforts made to avoid the presence of warm water.
B.The alarm voiced on the worsening situation of glaciers.
C.The tools employed to measure the temperature of Antarctica.
D.The prediction based on a scientific study of the grounding line.
2020-06-05更新 | 125次组卷
阅读理解-阅读单选(约380词) | 适中 (0.65)
名校
文章大意:本文是一篇说明文。主要说明了人与动物是关系紧密的朋友。并且例举了猫、狗、马、大象等动物对人类所做的贡献,他们是人类可靠的朋友。

【推荐2】Man’s relation with animals is very old. They can be traced back to the beginning of civilization. Man is the best creation and measure of all things. However, his kinship with animals is well established. Darwin believed that man has evolved from monkeys. Thus, they are our ancestors.

The friendship between man and animals is more reliable and lasting. Man’s friendship with man may not last long, but it is of permanent nature with the domesticated and pet animals. Domesticated creatures are never ungrateful. They will never turn hostile. That’s why they have been so useful to mankind and live in perfect harmony with us.

In western countries cats are very popular as pets, for they kill rats and other rodents and make a good constant company. Dogs are kept for protection and safety. They are matchless in faithfulness and loyalty. They help in hunting, in rearing sheep and in protecting properties. They also help in detecting and tracking thieves and criminals. They are trained for many other purposes as well, including being good guides and rescuing services.

Horses are domesticated, for they’re well-known for their speed, strength, faithfulness and an unerring road sense. They are dependable friends both in war and peace. Similarly, elephants have been great and reliable friends of mankind from immemorial times. An elephant is very intelligent, brave, faithful and hardworking animal. Being an intelligent animal, it never forgets both the acts of kindness and acts of wrongdoing.

Donkeys, camels, yaks, bullocks are the beasts of burden. They serve us in a way that none can do. Similarly, the cow is raised for its milk, dung and hide. In western countries cow-meat is also eaten with relish(风味佐料). But in India cow is worshipped by the Hindu as mother and a symbol of holiness, care, affection and innocence. Monkeys are widely used in the discovery of medicines. Whenever a new medicine is discovered, it is first tried on them.

Really, these animals are great and reliable friends of ours, without which life would have lost half of its charm and usefulness. We should always be kind to them.

1. Why the author mentions Darwin in paragraph one?
A.To illustrate humans have evolved from monkeys.
B.To suggest Darwin was a highly accomplished biologist.
C.To imply the relation between man and animals is close.
D.To show the human civilization has a long history.
2. Which of the following has the closest meaning to the underlined word “hostile” ?
A.Hospitable.B.Grateful.C.Agreeable.D.Aggressive.
3. What can we know from the article?
A.Dogs are domesticated simply to be pets for people.
B.Elephants are so intelligent that they can’t be domesticated.
C.Horses can find its way home because of their sound sense of direction.
D.Cows are worshiped in India as well as in western countries.
4. Where can’t we read this passage?
A.A science fictionB.A textbookC.A magazineD.The Internet
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【推荐3】Exploration is about how we experience our most meaningful geography. A geography education without actively learning how to explore places is as frustrating as teaching music lessons without sound. Besides that, in its widest sense, exploration has the potential to be one of the most enjoyable and rewarding things we humans will ever do. It can be good for developing problem-solving, teamwork, social and other vital skills. Therefore, we should be given the opportunities to learn properly how to do it.

The sad reality is that millions of children are socially and geographically deprived (剥夺的). Their learning environments lack the diversity of place and experience-based opportunities that they need to develop well and as a result, they will not reach their full potential.

There is plenty of research showing that many children have little time and space to explore, play and learn outdoors. Perhaps most shockingly, Dirt is Good conducted a survey which found that three-quarters of UK children spend less time outside than prisoners, that the amount of time children spend playing in natural places has decreased and that a fifth of children do not play outside on an average day.

There are a large number of good and complex reasons why parents do not let their children play (and so learn) outdoors and not overcoming these barriers comes with its own risks. Changing the parenting cultures that are overly limiting many children’s freedom will potentially need efforts of generation after generation.

Partially as a response to this situation, an increasing number of doctors are providing social prescriptions (处方). Instead of being offered medicine for a mental or physical illness, young patients are being prescribed time with nature, volunteering, doing sports or some other activities instead.

Teachers are, in many ways, in a better position to provide time and space for children to benefit from experiences that help them not only to learn, but also to be well. Teachers can   spare both formal and informal time and space for exploration that helps not just children who are ill, but also those who are well to remain well or become even better.

1. What does Paragraph 1 mainly talk about?
A.The way to reach full potential.
B.The methods of doing exploration.
C.The different attitudes to exploration.
D.The importance of doing exploration.
2. What can we learn from the survey of Dirt is Good?
A.Prisoners in the UK are treated very well.
B.Children are badly in need of time outdoors.
C.Children are becoming less outgoing nowadays.
D.There aren’t enough natural places in many countries.
3. What do we know about the process of changing parents’ attitude?
A.It’s interesting but tiring.
B.It’s complex and risky.
C.It’s challenging but worthwhile.
D.It’s troublesome and demanding.
4. By mentioning social prescriptions, the author wants to say _______.
A.playing outside can promote people’s health
B.traditional medicines may have side effects
C.experienced doctors are in short supply
D.mental illness needs special treatment
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