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题型:阅读理解-阅读单选 难度:0.65 引用次数:484 题号:10654146

More than half of the birds in Washington are at risk of extinction because of climate change. That's according to a new national report from the Audubon Society, which gives detailed analysis of climate effects on about 600 species of North American birds.

It's based on more than 140 million observations of birds across the US, Mexico and Canada. Audubon scientists looked at the likely effects of sea-level rise, urbanization, drought, extreme spring heat, increased fires, heavy rain and other factors.

But it doesn't just spell out a doomsday scenario (世界末日).Instead, it offers a range of effects and warming, depending on how much carbon humans add to the atmosphere.

"It is truly an existential threat (威胁), not only to birds but to people,” said Doug Santoni, board chair of Audubon Washington, who looked into the report as soon as it came out.

Santoni says he was struck to see the vulnerability (脆弱)of a common “ backyard bird" , the dark-eyed junco. It's one that many first-time birders become familiar with as they learn how to identify species based on their markings and other traits. Currently in Washington, you can count on juncos to show up at your feeder, year round. Extreme spring heat, increased fires and heavy rain are the kinds of changes that will force birds like these north, or kill them off if they fail to adapt.

Trina Bayard, director of bird conservation at Audubon’s Washington chapter, says, "It's certainly a very serious warning report," but adds that there’s still hope. “If we can stabilize current temperatures and decrease our emissions (排放), we can really reduce the effects to these birds …that's very motivating. ”

1. What can we know about the new report?
A.It analyses the species of birds in detail.
B.It's issued by watching 600 bird species.
C.It shows the end of North American birds.
D.It reports the threat some birds are facing.
2. What may Santoni probably agree with?
A.Climate change is a threat only to birds.
B.It's too late to take action to save the birds.
C.The current situation of the birds is worrying.
D.It's common that birds are affected by climate change.
3. Which of the following can help these birds according to Trina?
A.Lowering present temperatures.
B.Reducing our daily emissions.
C.Making them adapt to climate change.
D.Encouraging people to protect them.
4. What can be the best title for the text?
A.Climate change threatens many Washington bird species.
B.A new report about 600 species of North American birds.
C.Different attitudes towards the situation of bird species.
D.Climate change makes different kinds of species at risk.
2020·河北衡水·三模 查看更多[2]

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文章大意:这是一篇说明文。本文阐述了二十多种澳大利亚哺乳动物已经被野猫灭绝了,并且,野猫还在威胁着当地哺乳动物的生命。新南威尔士大学的Alexandra Ross经过试验发现,哺乳动物可以通过接受训练来躲避捕食者。

【推荐1】More than a score of Australian rare mammals have been killed by wild cats. These predators, which arrived with European settlers, still threaten native wildlife — and are too plentiful on the mainland to eliminate, as has been achieved on some small islands which were previously filled with them. But Alexandra Ross of the University of New South Wales thinks she has come up with a different way to deal with the problem. As she writes in a paper in the Journal of Applied Ecology, she is giving feline (猫科的) — awareness lessons to wild animals involved in re-introduction programs, in order to try to make them cat-conscious.

Many Australian mammals, though not actually extinct, are restricted to fragments of cat-free habitat. This will, however, put the forced migrants back in the sights of the cats that caused the problem in the first place. Training the migrants while they are in captivity, using stuffed models and the sorts of sounds made by cats, has proved expensive and ineffective. Ms Ross therefore wondered whether putting them in large natural enclosures with a scattering of predators might serve as a form of training camp to prepare them for introduction into their new, cat-ridden homes.

She tested this idea on a type of bandicoot (袋狸) that superficially resembles a rabbit. She and her colleagues raised two hundred bandicoots in a huge enclosure that also contained five wild cats. As a control, she raised a nearly identical population in a similar enclosure without the cats. She left the animals to get on with life for two years, which, given that bandicoots breed four times a year and live for around eight years, was a considerable period for them. After some predation (扑食) and probably some learning, she abstracted 21 bandicoots from each enclosure, attached radio transmitters to them and released them into a third enclosure that had ten hungry cats in it. She then monitored what happened next. The outcome was that the training worked. Over the subsequent 40 days, ten of the untrained animals were eaten by cats, but only four of the trained ones. One particular behavioral difference she noticed was that bandicoots brought up in a predator-free environment were much more likely to sleep alone than were those brought up around cats. And when cats are around, sleeping alone is dangerous. How well bandicoots that have undergone this extreme training will survive in the wild remains to be seen. But Ms Ross has at least provided reason for hope.

1. What can be learned from the first paragraph?
A.The feline-awareness lessons have proved ineffective.
B.There are too many wild cats to be killed in Australia.
C.Different ways have been tried to hunt and kill wildlife.
D.Native wildlife has been threatened by a growing population of wild cats.
2. The forced migrants in the second paragraph refer to ________.
A.Australian mammals restricted to certain areas
B.The wild cats tracking down the mammals
C.Wild animals involved in the program
D.The predators captured by the animal trainers
3. Which of the following is TRUE about the first two enclosures?
A.They were both closely monitored.B.They had 200 bandicoots in total.
C.They had similar natural environment.D.They both had wild cats in them.
4. What was the finding of Ms Ross’ research project?
A.Untrained bandicoots failed to identify cats.
B.Training bandicoots prepared them to fight cats.
C.Sleeping alone in the wild was dangerous.
D.Bandicoots could be trained to avoid predators.
2023-03-31更新 | 307次组卷
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【推荐2】Are you curious about mysterious creatures? We are going to tell you about some here.

Okapi

If giraffes and zebras could produce a next generation, their babies would look like an okapi. This strange-looking creature has striped legs like a zebra and the face of a giraffe. Its neck is much shorter than a giraffe, but like its cousin, it has an extremely long tongue, which can be up to 12 inches long. The okapi can use its tongue to wash its own eyelids and ears. Before 1901, Okapis were known only to the people living in the Congo rainforest.

Loch Ness Monster

The locals near Loch Ness in northwestern Scotland refer to the mysterious creature as "Nessie". Nessie is said to be a large animal with a long neck that lived during the time of the dinosaurs. Similar creatures have been reported in other lakes around the world. But whether it is real remains unknown.

Ivory-Billed Woodpecker

By the mid-1990s, the ivory- billed woodpecker was widely believed to have died out due to deforestation(砍伐森林) and hunting. It was rediscovered in 2004, when a bird lover reported seeing one alive in the woods of Arkansas, America. Researchers later got a video of the bird.

King Cheetah

Starting in 1926, people in Zimbabwe began to see a cheetah with unusual markings. This cheetah has large spots like a leopard(美洲豹) and black stripes down its back. People called the creature "king cheetah". It is a leopard-cheetah hybrid (混合).

1. Which of the following is TRUE about the okapi?
A.It is produced by a giraffe and a zebra.
B.It was not widely known until the twentieth century.
C.Its neck is much shorter than that of a zebra.
D.It was first found in 1901.
2. What can we learn from the passage?
A.People still don’t know why the king cheetah has strange markings.
B.The giraffe has a short tongue.
C.Nessie is a kind of dinosaur.
D.The decrease in forests has had a great effect on the ivory-billed woodpecker.
3. Where can one most probably find this passage?
A.In a nature magazine.B.In a travel guide.
C.In a book of fairy tales.D.In an advertisement.
2021-11-07更新 | 33次组卷
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【推荐3】Nowadays, bamboo growth cycles and the dietary needs of lemurs (狐猴) are out of sync. Findings show rainfalls are changing annually. “Over the past two years, there has been a three-month delay in the rainy season and new tender shoots that lemurs consume for nutrition are appearing in January and February - 14 days after the first rain” says Patricia Chapple Wright, a primatologist, anthropologist, and conservationist at Stony Brook University. “Lemurs eat a food source that is very adaptive,” Patricia Wright told PBS NewsHour. “It’s able to stand climate change, but the lemurs, unfortunately, can’t adapt quickly to this changed cycle.”

Since baby lemurs are born in November, the delayed rainy season is dangerously affecting the survival of them for lack of nutrition available for both the mothers and offspring. “This is why, for extreme feeding specialists like the greater bamboo lemur, climate change can be an unknowing killer,” J Wright says. “Making the lemurs rely on bamboo stems (茎) for just a bit longer may be enough to tip the balance from existence to extinction.” The lemurs’ highly specialized teeth are also similar to the pandas5 teeth. Both are the mammals able to chew up stems. But this diet can’t last for more than a season or two because the stems can wear away their teeth.

The researchers believe that climate change is affecting the lemurs. The fossil record shows that the lemurs once lived throughout the island. Today, the mammals are cornered on the eastern side, where the dry season at present is the shortest. And if people continue the deforestation practice in the area, the lemurs will have nowhere to go.

The situation is serious, so Wright and her colleagues plan to create bamboo corridors within the rainforests, which will provide available bamboo to eat. They want to work with local villagers to plant more bamboo and manage automatic watering systems when dry seasons last long. They also want to build the local economy by allowing people to harvest a part of bamboo while the rest remains with the lemurs, so people will be interested. Wright’s conservation plans include moving lemurs back to other places on the island as well.

1. What does the underlined part in Paragraph 1 most probably mean?
A.Go with each other.B.Occur at different times.
C.Lead to a heated discussion.D.Call for effective protection.
2. Why will lemurs get hungry if the dry season continues?
A.They may run out of bamboo.B.They can’t adapt to the hot season.
C.They dislike the less delicious stems.D.They can’t chew the stems for a long period.
3. What may be the root cause of the narrowing of lemurs’ living areas?
A.The climate change.B.Their teeth protection.
C.The decreasing forest.D.Their special dietary habits.
4. Which of the following may Wright approve of to protect lemurs?
A.Shortening the dry season.B.Forbidding the cutting of bamboo.
C.Increasing people’s motivation.D.Finding other islands for lemurs to live on.
2023-07-30更新 | 92次组卷
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