A new study shows that increases in extreme winter weather in parts of the US are linked to quickened warming of the Arctic (北极).
Over the past four decades, warming in the Arctic has been far more definite than that in the rest of the world and has caused a rapid decrease of summer sea ice. Heating in the Arctic has ultimately disturbed the circular pattern of winds known as the polar vortex (旋涡). As a result, it got stretched out of shape and slid southward off the pole. Scientists believe this vortex stretching process led to the deadly Texas cold wave in February this year.
“The polar vortex over the Arctic usually locks in cold air at the poles and does not easily move south. The stronger the winds, the more the air inside is kept, and the colder it gets,” explained lead researcher Dr. Judah Cohen, who’s a professor at the Massachusetts Institute of Technology (MIT). “Melting (融化) ice in the Arctic and rising temperatures can disturb the Arctic vortex, making cold air no longer locked in the Arctic? but move some farther south.”
The researchers say that their findings are based on both observations and modelling and they show a physical link between climate change in the Arctic, the stretching of the polar vortex and the impacts on ground.
The researchers believe their work could improve predictions about the beginning of extreme cold winter events. The research team also believes that their findings will help people understand that global warming is complex and perhaps let go of the idea that colder winters mean climate change isn’t happening. “In the past, these cold extremes over the US and Russia have been used to justify not reducing carbon, but there’s no longer any excuse to not start reducing emissions (排放) right away,’’ said Dr. Cohen.
1. What is paragraph 2 mainly about?A.The efforts made by scientists. | B.The definition of polar vortex. |
C.The decrease of summer sea ice. | D.The formation of Texas cold wave. |
A.Making the wind stronger. | B.Helping cold air move freely. |
C.Speeding up the melting of ice. | D.Keeping cold air from escaping. |
A.Global warming is just alarmist. |
B.Weather-gone-wild pattern is a fantasy. |
C.Reducing emissions is a pressing matter. |
D.Weather forecast has never been a perfect science. |
A.Environment. | B.Travel. | C.Education. | D.Life. |
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【推荐1】As a result of pollution,Lake Erie, on the borders of the USA and Canada, is now without any living things.
Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organisms (生物体) to be affected are either plants or plankton(浮游生物). But these organisms are the food of fish and birds and other creatures.When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it’s not until dead fish and water birds are seen at the river’s edge or on the seashore that people realize what is happening.
Where do the substances which pollute the water come from? There are two main sources of sewage (污水) and industrial waste. As more detergent (洗涤剂) is used in the home, so more of it is finally put into our rivers, lakes and seas. Detergents harm water bird, dissolving the natural substances which keep their feathers waterproof. Sewage itself, if not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful as there are many highly poisonous things in it, such as copper and lead (铅).
So, if we want to stop this pollution,the answer is simple: sewage and industrial waste must be made clear before flowing into the water.It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.
1. Pollution of water is noticed ________.A.when the first organisms are affected |
B.when a good many fish and birds die |
C.when poisonous things are poured into water |
D.as soon as the balance of nature is destroyed |
A.water | B.waste |
C.poison | D.oxygen |
A.Organisms. |
B.Plants and plankton in the water. |
C.Waste water from cities. |
D.Industrial waste made clear before flowing into the water. |
A.realize the serious situation clearly |
B.put oxygen into the water |
C.make the waste harmless before it flows into the water |
D.make special room in the sea for our rubbish |
【推荐2】What were you doing when you were nine years old? Making crafts from a Klutz book? Kicking around a soccer ball? Designing a business plan to deal with plastic pollution and relieve childhood poverty? Zymal Umar showed us the latter. The Pakistan’s youngest businesswoman has started a project entitled Zee Bags, which aims to reduce plastic pollution by providing an environmentally-friendly alternative to plastic grocery bags.
When Zymal was on a shopping trip with her parents three years ago, she was shocked by the number of plastic bags on the streets. Depressed by the plastic pollution, she was reminded of the severe consequences our habits have on the environment. Then, she noticed a shopkeeper handing out newspaper bags. And at that moment, Zymal knew she had to act. Since then she has created beautiful, unique reusable newspaper bags for hundreds of customers.
It’s amazing to see this youngster using her brains and business skills for good. And she should certainly feel proud of the work she is doing. After all, plastic grocery bags are killing thousands of marine animals every year through their contribution to plastic waste. According to The Earth Institute, over one trillion plastic bags are used worldwide annually—that’s about two million bags used per minute around the world.
And those bags certainly don’t disappear into thin air. Instead, they end up in our oceans, putting approximately 700 marine species in danger of extinction due to the threat from pollution. And plastic bags are just one of the many forms of plastic trash that ends up in the oceans—in fact, an astonishing 8. 8 million tons of this material make their way from land to the oceans every single year.
But with Zee Bags, we’re all empowered to make more thoughtful choices about our trash production. And Zymal’s amazingness doesn’t stop there—the profits from her sales go towards helping poor children.
1. What is the second paragraph mainly about?A.How Zymal felt about her shopping trip. |
B.How Zymal learned about plastic pollution. |
C.How Zymal was received by the shopkeeper. |
D.How Zymal was inspired to create her bags. |
A.To praise Zymal for her great efforts. |
B.To urge readers to stop using plastics. |
C.To stress the seriousness of plastic pollution. |
D.To show the rich knowledge of the author. |
A.She is amazing in every aspect of her life. |
B.She has concern for the disadvantaged. |
C.She urges everyone to be eco-friendly. |
D.She earns a lot of money from her business. |
A.Caring. | B.Determined. |
C.Confident. | D.Optimistic. |
【推荐3】Bringing species like beavers (河狸) back to England is no longer a priority, the government said on Friday to criticism from wildlife groups.
A recent report shows that one in six UK species are at risk of extinction. In September more than 60 conservation organisations reported a significant decline in species due to expansions in farming and the effects of climate change. In recent years, animals and plants have been reintroduced by charities as part of efforts to restore the country’s reduced biodiversity.
Despite the government allowing this, the Environment, Food and Rural Affairs Committee concluded in July that there was an absence of long-term plans on how to manage this. In response, the government has now said that the “reintroduction of species is not a priority”.
The government said it was focused on increasing biodiversity through habitat restoration. The government’s environment department has come under scrutiny (详细审查) for not doing more to prevent sewage dumping and other forms of pollution in England’s waterways.
Sir Robert Goodwill, chair of the Committee, said he was disappointed with the government response. Bringing back extinct species is a controversial issue — although farmers and landowners appear broadly supportive, there are risks of reintroducing new species, and without clear guidance, problems could arise.
A recent study showed that river barriers similar to those built by beavers can protect communities at risk of flooding. But there have also been cases documented in Europe where beavers have built their dams in places that have damaged crops and changed rivers.
Joan Edwards, director of Policy & Public Affairs at The Wildlife Trusts said, “Reintroducing wildlife must be part of the UK government’s arsenal (武器) for tackling nature loss and climate change — it is astonishing there is no strategy for doing so.”
“The return of wild beavers can help to recreate lost wetlands, with a knock-on effect that benefits other wildlife including insects, invertebrates and birds. Beavers also slow the flow of water, which can reduce flood risks to towns and villages,” she said.
1. What does paragraph 2 want to convey?A.The situation of species in the UK is severe. |
B.Reintroduction of species in the UK is not a priority. |
C.Expansions in farming have a great effect on climate change. |
D.The UK government’s response to reduced biodiversity is disappointing. |
A.By developing strategy. |
B.By offering guidance. |
C.By expanding farming. |
D.By restoring habitat. |
A.It was messy. | B.It was limited. |
C.It was beneficial. | D.It was costly. |
A.The advantages of reintroducing wildlife. |
B.The responses to a government statement. |
C.The effects of climate change on farming. |
D.The approaches to increasing biodiversity. |
【推荐1】Americans are now allowed to get a COVID-19 vaccine (疫苗). But the process in America is not going as smoothly as some had hoped. Many people are still facing a wait for their first shot. Moreover, the vaccines aren't available to kids under 16 yet. That's because scientists have only tested if the vaccine works in adults.
The good news is that there are two companies, Moderna and Pfizer, making COVID-19 vaccines. They are now running clinical trials(临床实验)to test their vaccines in teens and kids. Volunteers are given a treatment plan and then evaluated after.
Clinical trials are designed with safety in mind and usually done in adults first. They work like this: volunteers get placed into one of two groups. One group receives the vaccine. The other group gets a placebo. This is a shot given in the same way as the vaccine but with no effect. Scientists can compare the effects of the real vaccine against the placebo to see if the vaccine works. Researchers want to know everything that a person experiences when they get the shot, so they can detect any harmful effects. If anything did happen, the trial would stop immediately.
Some teens are eager to volunteer because they want to help people. Maybe you're the right age to be part of a clinical trial for the COVID-19 vaccine. Why not volunteer For A Vaccine Trial? Interested kids should read about the trials because every trial has risks. They should talk to their doctor and weigh the benefits and risks. Every vaccine has rare side effects in a few patients.
If you want to participate in a trial, you can try to sign up online by just clicking here, clinicaltrials gov. which lists every clinical trial in the US, including COVID-19 vaccine trials.
1. Why kids under 16 can't get a COVID-19 vaccine?A.Because the vaccine is too hard to get. |
B.Because the vaccine is too expensive for them. |
C.Because they are not at the risk of getting COVID-19. |
D.Because the effectiveness of the vaccine for kids hasn't been tested . |
A.A substance to comfort patients | B.A pill to treat patients |
C.A prize to award patients | D.A way to cure patients |
A.To tell American adults they can get a COVID-19 vaccine. |
B.To inform that American children can't get a COVID-19 vaccine. |
C.To give information about clinical trials of vaccines in teens and kids. |
D.To provide information for potential volunteers on trials. |
A.Newspapers. | B.Magazines. | C.Internet. | D.Textbooks. |
【推荐2】By the mid-1800s, German immigrants had brought their chopped beefsteak dish with them to the New World. In 1837, New York’s Delmonico’s restaurant offered a Hamburg steak on its first menu. At 10 cents, it was one of the most expensive items, twice the cost of pork chops and roast beef.
Americans eventually called the dish “hamburger.” It’s not certain who first “invented” the sandwich as we know it today, but in 1885, both “Hamburger Charlie” Nagreen of Seymour, Wisconsin, and the Menches brothers of Hamburg, New York, served up ground-beef sandwiches at their local fairs.
Meanwhile, Louis’ Lunch in NewHaven, Connecticut, claims to be the oldest burger shop in America, having served them since 1900. But what might surprise fast-food fans is that the first burger chain in the U.S. was neither McDonald’s nor Burger King. That title goes to White Castle, founded in Witchita, Kansas, in 1921.
A big advantage is that burgers can be eaten without tools, although not everyone considers them a handheld food. Many people around the world prefer to eat them with a fork and knife. Among them: the late Queen Elizabeth II. The German knife-maker Wüsthof even makes a special burger knife (similar to a steak knife, but with a wider tip for spreading condiments).
The perfect hamburger is subjective, of course. Medium well or medium rare? Set or just by itself? Cheese or ketchup (番茄酱)? Even the beef can be changed to turkey, bison or a portobello mushroom cap. In Australia, you can choose a fried-egg topper, or slices of pineapple, pumpkin or beet. In the Netherlands, the Bicky burger features a deep-fried patty (肉饼) made with pork, chicken and horse meat. With so many ways to enjoy a burger, it’s no surprise that as the McDonald’s sign reads, we’ve eaten “billions and billions” of them.
1. Which of the following is the first burger chain America?A.Delmonico. | B.McDonald’s. | C.White Castle. | D.Louis’ Lunch. |
A.To prove burgers can be eaten without tools. |
B.To prove the knife Wüsthof makes is popular. |
C.To show some people eat hamburgers with tools. |
D.To show everyone considers burgers a handheld food. |
A.A burger knife is the same as a steak knife. |
B.The beefsteak in the hamburger can be changed. |
C.Hamburg steak was once the most expensive items. |
D.“Hamburger Charlie” was the first to invent hamburgers. |
A.McDonald’s has been very popular. |
B.People have eaten too many hamburgers. |
C.Many countries have the perfect hamburger. |
D.Hamburgers can be specially designed in ways people like. |
【推荐3】Why do we find ugly animals so attractive? And what makes odd-looking creatures so cute?
Evolution plays a role. According to Austrian zoologist Konrad Lorenz, human attraction to infantile (婴儿的) features, such as big eyes, large heads and soft bodies, is an evolutionary adaptation that helps ensure that adults care for their children, guaranteeing the survival of their species. Strange-looking animals such as blobfish, pugs, aye-ayes and bulldogs all share these infantile qualities that cause an affectionate response among humans and an innate instinct to nurture and protect. And these infantile characteristics increase a person’s “protective behavior, attention and willingness to care” for the individual and reduce the “likelihood of aggression towards an infant”, says Marta Borgi, a researcher.
Ugly animals often have other value—some, like the blobfish or the naked mole rat, live in extreme environments that they have adapted to in remarkable ways. Scientists are keen to study these animals to understand whether their biology might provide fresh insights that could lead to treatments for human health conditions such as cancer, heart disease and neurodegenerative diseases.
But while many ugly creatures are exquisitely adapted to their life in the wild and can provide enormous benefits to the ecosystems they live in, they often still don’t get as much attention as more traditionally cute and cuddly animals. This can result in a bias (偏见) which leads to many of the less attractive species being overlooked in terms of research.
There are culture-led other factors that also drive our obsession (痴迷) with ugly-cute animals. “The ugly-cute thing is very fashionable,” says Rowena Packer, a lecturer of animal behavior. This is partly driven by social media, with many celebrities (名人) and influencers showing off pet pugs and French bulldogs on Instagram, she says.
But there are some serious welfare concerns around this trend. Vets are urging people not to choose a flat-faced dog breed, because they suffer from serious health problems. Pugs and French bulldogs which have been selectively bred experience breathing difficulties, repeated skin infections and eye diseases. So while goofy features such as bulging eyes and wrinkly faces may make us smile, we might want to reconsider our obsession with “ugly-cute” pets.
1. According to Konrad Lorenz, what features in animals are attractive to humans?A.Shiny colors. | B.Big eyes and large heads. |
C.Unusual body shapes. | D.Soft fur and large faces. |
A.Valued. | B.Reconsidered. | C.Ignored. | D.Misunderstood. |
A.By leading different cultures. |
B.By showing off ugly animals’ behaviors. |
C.By exposing many celebrities and influencers. |
D.By publicizing widely known people’s ugly-cute pets. |
A.How ugly animals adapt to the wild. | B.Why we like ugly-cute animals. |
C.Why lovely animals attract humans. | D.How we handle animals’ health problems. |