While we aim to avoid any appearance of baseless theories, it is noteworthy to observe the long-standing practice of putting magnets (磁铁) in cows, a phenomenon that has been carefully unfolding for years. Why are farmers putting magnets in cows?
Known as cow magnets, the devices are placed inside cattle to deal with “hardware disease”. Hardware Disease occurs after an animal eats a metallic object that then makes a hole in the wall of the reticulum, the second stomach room in ruminant animals (反刍动物). This issue arises from the natural eating behaviors of these ruminants, similar to a person at an unlimited food event — quickly and eagerly large bites without sufficient chewing. This fast-paced feeding approach makes them tend to unintentionally consume metal pieces in their food, including broken farm machinery parts, nails and wires used in fencing, for instance.
Metal objects entering the reticulum may result in infections, increased body temperatures, digestive problems, and unease for the animals. To address hardware disease, the main strategy is to prevent metal from entering the cattle’s diet. Farmers have also adopted the method of placing cow magnets into the stomach using either a stomach tube or a balling gun. The cow magnet attracts such objects and prevents them from becoming fixed in the animal’s tissue. These magnets, once positioned, remain within the animals throughout their lifespan, only being removed after death when the cows pass away or are processed for meat.
Moseley, a Veterinary Medicine professor, states in a hardware disease resource, “The magnet gathers foreign metallic objects, reducing the risk of making a hole in the reticulum.” Research shows a mild magnetic field affects a cow’s small blood pathways, improving circulation and aiding recovery without significant impact on the cow or milk quality.
1. Why are magnets fed to cows?A.To change feeding habits. | B.To prevent hardware disease. |
C.To improve the milk quality. | D.To enhance digestive system. |
A.Eating without chewing. | B.Taking magnets by mistake. |
C.Sufficient chewing hard food. | D.Swallowing metals accidentally. |
A.To describe the historical practice of putting magnets in cows. |
B.To deny the adoption of cow magnets to enhance cattle health. |
C.To discuss the influence of a mild magnetic field on milk quality. |
D.To explain the reason for using magnets to prevent hardware disease. |
A.Exploring more potential benefits of cow magnets. |
B.Investigating the broader applications of magnets. |
C.Discussing the alternative methods of caring for cows. |
D.Evaluating the long-term effects of magnets on animals. |
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【推荐1】Besides the theory of evolution, Charles Darwin was also responsible for the theory of emotion, the most important principle of which was that the mind consists of two competing forces, the rational(理性的)and the emotional. He believed emotions played a part in the lives of non-human animals, but in humans emotions were a very small remaining part whose usefulness had been largely replaced by the evolution of reason.
This theory dominated his field for more than a century, but it was dead wrong. We now know that, on the contrary, emotions enhance our process of reasoning and aid our decision-making. In fact, we can’t make decisions, or even think, without being influenced by our emotions.
Consider a pioneering 2020 study in which researchers analyzed the work of 118 professional traders at four investment banks. Some were highly successful, but many were not. The researchers’ goal was to understand what differentiated the two groups. Their conclusion? The traders had different attitudes toward emotions.
The relatively less successful traders for the most part denied that emotions had an effect on their decision-making. The most successful traders, in contrast, had a different attitude. They showed a great willingness to reflect on their emotion-driven behaviour. They recognised that emotion and good decision-making were linked. Accepting that emotions were necessary for high performance, they tended to reflect critically about the role of emotion. Though the successful traders accepted the positive and essential role emotions played, they understood that when emotions become too intense it is useful to know how to tone them down. The issue for them was not how to avoid emotion, but how to harness it.
If emotions aid rational reasoning, how does that work? Perhaps the most important discovery regarding the role of emotion is that even when you believe you are exercising cold, logical reason, you aren’t. People aren’t usually aware of it, but the very framework of their thought process is highly influenced by what they’re feeling at the time. As the Caltech neuroscientist Ralph Adolphs puts it: “Each emotion is a functional state of the mind that puts your brain in a particular mode of operation that adjusts your goals, directs your attention, and modifies(调整) the weights you assign to various factors as you do mental calculations.
The new view of emotion may not correspond to the way Darwin saw it, but it does support one of the basic conclusions of his theory of evolution: humans are not as different from non-human animals as people believed. Want to fare better? Value and regulate your emotion.
1. Based on the study, successful traders would .A.reveal their hidden emotions |
B.owe their success to emotions |
C.review decisions depending on emotions |
D.examine their actions influenced by emotions |
A.Control and use. | B.Analyse and release. |
C.Face and adapt to. | D.Understand and accept. |
A.Confidence may expose one to more chances. |
B.Depression will consume one’s energy. |
C.Anger may lead one to risk-seeking. |
D.Optimism will affect one’s health. |
A.The contributing factors to emotions. |
B.The workable strategies of emotions. |
C.The working principle of emotions. |
D.The constructive role of emotions. |
【推荐2】In the first series of the BBC television comedy Flying Circus, broadcast in 1969, a man tells a slightly nervous woman on her doorstep that he would like to come into her house and steal a few things. Suspiciously, she asks him: “Are you an encyclopedia (《百科全书》) salesman?” No, he announces, he is a burglar. Eventually, she lets him in. Once inside, he says: “Mind you, I don’t know whether you’ve really considered owning a really fine set of modern encyclopedias…” The self-proclaimed thief was, after all, a successful encyclopedia salesman.
Author and journalist Simon Garfield quotes this comedy in his book, All the Knowledge in the World, his “history” of the encyclopedia. Garfield’s passion for encyclopedias began as a child in the 1960s and continues to this day. Although now, like everyone else, he searches for information online too, he asks at the end of the book “Is the information we receive today more or less reliable than the information we received in our childhood?” It is a fascinating question, which his book goes at least some of the way toward answering.
Despite a large variety of encyclopedias, Garfield’s account is dominated by Britannica, launched in the United Kingdom in 1768 and Wikipedia, launched in the United States in 2001. Britannica’s contributors have always been selected for their expertise. During the 20th century, named contributors included Cecil B. DeMille on motion pictures, Albert Einstein on space-time, J. B. Priestley on English literature and George Bernard Shaw on socialism. Most were paid a fee, however modest; Einstein, for example, received $86.40 for his entry. The contrast with Wikipedia is sharp: Anyone may contribute to it, contributors are anonymous, and none receives payment.
Authority is therefore the key feature of Britannica, although it certainly contains errors — whereas Wikipedia claims to be full of expertise, leaving itself open to both praise for its unparalleled diversity and criticism for its elementary errors. Even so, “You could still consider,” writes Garfield, “Wikipedia as the most influential and enduring representative of the internet as a force for good.” Yet he also wryly notes that “wiki” is the Hawaiian word for “quick”. Wikipedia tends to be quickly written, quickly consumed, sometimes quickly corrected, and often quickly forgotten.
“I hope this book has encouraged you to think twice about throwing out an old set of encyclopedias,” concludes Garfield. As it controversially suggests, despite — or perhaps because of — the continuing growth of the internet, we are sometimes less reliably informed today than the 1960s. After all, anyone can be a contributor nowadays.
1. The author begins the article with a comedy to .A.criticize the quality of information found in encyclopedias |
B.highlight the reliability of encyclopedias as a source of information |
C.illustrate the declining popularity of encyclopedias in the modern age |
D.introduce the topic of encyclopedias in a lighthearted and engaging way |
A.To explain where the fees of Britannica went to. |
B.To illustrate the high level of professional knowledge of Britannica. |
C.To highlight the diversity of its contributors’ backgrounds. |
D.To give typical examples of its world-famous contributors. |
A.Britannica contributors were paid more than Wikipedia contributors. |
B.Britannica contributors were paid a descent fee, while Wikipedia contributors were not. |
C.Britannica contributors were selected for their expertise, while anyone can contribute to Wikipedia. |
D.Britannica contributors were nameless while Wikipedia contributors were selected for their expertise. |
A.ironically | B.bitterly | C.objectively | D.seriously |
A.Because we have too much information available to us. |
B.Because we are too reliant-on social media for news and information. |
C.Because the internet has led to an increase of inaccurate information. |
D.Because we have lost the sense of expertise that encyclopedias used to represent. |
【推荐3】Good news: your happiest years are still ahead of you. Science says so! Think you have already reached your top in life? We want to share some good news with you:
According to new research, we’re happiest at two points in our lives — not just one. Researchers at the London School of Economics and Political Science asked 23,000 German volunteers aged 17 to 85 to rate their life satisfaction.
Their results? Anything but bad!
Of course, that’s all the more reason to find easy ways to be happier without really trying, regardless of your age!
A.You might want to think again. |
B.Your happiest years are still ahead. |
C.If you think about it, that makes a lot of sense. |
D.Experts recommend choosing small yet rewarding tasks. |
E.Volunteers predicted how happy they would feel in five years. |
F.The study found that happiness tends to follow a U-shaped line over a person’s lifetime. |
G.Take things one step further with the 50 tiny changes that will make you a happier person. |
【推荐1】As much as I love the rides in theme parks, my favorite part of the experience is the live entertainment. Whether it’s a parade, stage show, “streetmosphere”, or even an impressive nighttime show, I just love the energy that a live performance can bring to a space. It is not uncommon for me to visit a theme park and go on one ride and spend the rest of the time just enjoying the atmosphere.
No matter how many times I ride an attraction, I’m having the same experience. But with live entertainment, it constantly changes. Different performers bring their own touch to the show. Even when things go wrong in a live situation, I find it fascinating to see how it is covered. There is an impressive art to fixing an error, or sometimes even making it a comedic moment.
But because these live performances aren’t bolted (固定) to the ground and are easily influenced, they are often the first thing to get removed from the parks when there is a shortage of money. As much as I understand this business decision, it feels shortsighted. The parks simply don’t feel alive when live entertainment is missing. Without it, a theme park is just a group of people walking quickly from one ride to the next.
We are certainly living in an unprecedented time, but I’m happy to see that theme parks have found creative ways to make sure there is some sort of live entertainment put on safe. Most parks are having their characters and performances visible from a distance.
One of my favorite examples of this was shared by @Attractions on Twitter, where Winnie the Pooh was frolicking around Epcot and trying to catch a butterfly. This is such a great example of what can be done with characters and live entertainers in a time when the “norm” isn’t possible, I honestly hope that these special moments remain once it’s safe for the meet-and-greets and close-up interactions to return.
1. What does the author like best in a theme park?A.Joining its parades. | B.Observing its visitors. |
C.Trying its various rides. | D.Enjoying its live shows. |
A.The error. | B.The show. | C.The reason. | D.The attention. |
A.It will bring theme parks more business. |
B.It will make theme parks easily influenced |
C.It will make theme park rides more popular. |
D.It will take away the liveliness of theme parks. |
A.To explain what theme parks can do to stay |
B.To show its popularity among theme park visitors. |
C.To explain what characters can do to get closer to visitors. |
D.To show the influence special times can have on theme park. |
【推荐2】Social media use has been linked to mental health problems in the teenagers. But a new study from England argues that the issue may be more complex than experts think.
The new research interviewed 10, 000 teenagers, who reported the frequency they used social media. More than three times daily was considered “very frequent.” But the researchers, for the first time, went a step further to investigate what kind of websites the teenagers frequented. They found that, in both sexes, very frequent visits to social media with negative (负面的) contents was associated with greater mental depression and anxiety.
“Our results suggest social media itself doesn't cause harm, but that frequent use may disrupt (中断) activities that positively influence mental health such as sleeping and exercising, while increasing exposure of young people to harmful contents," said study co author Russell Viner of the UCL Institute of Child Health,
It's an important discovery. J ust last month, research from Canada showed that higher level of social media use was linked with increased mental depression in adolescents.
With this study, the problem is put in a better context. It's not necessarily social media that's causing these issues. It's more likely the contents that young people are exposed to and its hindrance (阻碍) of healthy sleep and exercise.
Bob Patton, a professor of the University of Surrey, said this means that remedies focusing only on reducing social media use to improve mental health might not help. “Finding ways to improve the online contents and promote better sleep and exercise is needed to reduce physical and psychological harms," said he.
“If healthy lifestyles can be kept, the positive effects of social media use, such as encouraging social interactions, can be more supported," said Ann DeSmet, a professor at Ghent University in Belgium.
1. How does the new research differ from the previous studies?A.By carrying out detailed interviews. | B.By focusing on both girls and boys. |
C.By analyzing the social media contents. | D.By studying a larger number of teenagers. |
A.It doesn't cause any mental problems in teenagers. |
B.Its abuse may negatively change the healthy lifestyle. |
C.Its harmful contents should be reduced immediately. |
D.It encourages social interactions among adolescents. |
A.Measures. | B.Effects. | C.Experiments. | D.Differences. |
A.To prove the harmful effects of social media. |
B.To show the proper way to use social media. |
C.To present related studies and discoveries. |
D.To introduce an important new discovery. |
【推荐3】Hybrid cars are cars that run on both petrol and electricity.They have a small standard petrol engine and a battery and electric motor to provide electric power.
There are some differences between different models of hybrid cars,but the general principle is that the car runs on petrol,and the electric motor kicks in when additional power is required,for example when going uphill or accelerating.In some hybrid cars the petrol engine turns itself off when not needed,for example when the car has stopped at traffic lights,keeping only the electric engine running.
Conventional cars have large engines to cope with driving uphill and accelerating.Most of the time,this high engine capacity is not needed,but the engine continues burning up fuel.Hybrid cars have much smaller petrol engines,boosted by electric motors when needed,so they use less petrol.
Hybrid cars are also lighter and aerodynamically(空气动力学的) designed for greater fuel efficiency.
Another way that fuel consumption is cut is by a system of"regenerative braking(刹车)"。The electric motor is used to slow down the car,rather than conventional brakes.The energy produced by the slowing car is transformed into electrical power,which is automatically stored in the battery.In effect,the battery recharges when you brake.In conventional cars the energy produced when braking is wasted.
Car manufacturers and engineers have been experimenting with electric and hybrid cars since the late 19th century.In 1928 Ferdinand Porsche built an experimental hybrid car that used both an internal burning engine and electric motors.The first mass-produced hybrid car,the Toyota Prius,came out in Japan at the end of 1997.However,Hybrid cars became available in the USA only in 1999,when the Honda Insight went on sale.
As they use less fuel,hybrid cars are cheaper to run.There are also many initiatives in place to encourage people to buy them.In some countries,hybrid car owners pay a lower rate of tax,and don't have to pay on certain toll roads(收费公路)。In some cities around the world,hybrid cars are allowed to park for free.
1. What can we learn from paragraph 2?A.Hybrid cars don't need petrol any more. |
B.Petrol engine and electric motor work all the way. |
C.Hybrid cars mainly depend on electric power to run., |
D.Some hybrid car petrol engines will quit when unnecessary. |
A.Smaller petrol engines. |
B.Scientific design. |
C.Conventional brakes. |
D.Energy storage. |
A.Hybrid cars are cheaper to buy. |
B.Hybrid car owners don't have to pay tax. |
C.Hybrid car owners don't need to pay parking fee. |
D.Hybrid cars will have a bright future.; |
A.To advertise hybrid cars. |
B.To introduce hybrid cars. |
C.To compare conventional cars and hybrid cars. |
D.To inform the development of hybrid cars. |