1 . Scientists know that the internal forces that generate Earth’s magnetic field (磁场) can change and that the strength of the field swings over time. This can lead to gradual shifts in the intensity and location of Earth’s magnetic north and south poles and even reversals where Earth’s magnetic poles trade places.
But are these geomagnetic events responsible for extreme weather, extinction, and even disasters? Claims that Earth’s magnetic field is responsible for climate change are widespread online, but scientists say the theory has no basis. “At this time there aren’t any credible mechanisms that could make it a possibility,” says Gavin Schmidt, a climatologist in New York.” It’s not that we’re ruling out magnetic effects on climate without thinking about it, we collectively have thought about it, and it’s been found devoid.
There are three north poles on Earth: true north, geomagnetic north, and magnetic north. True north is a fixed position on the globe that points directly towards the geographic North Pole. But geomagnetic north, currently located over Canada’s Ellesmere Island, is not a fixed point — it represents the northern axis (轴) of Earth’s magnetosphere and shifts from time to time. Magnetic north corresponds to magnetic field lines and is what your compass locates.
During a pole reversal, Earth’s magnetic north and south poles exchange locations. This happens on average every 300,000 years or so, but the last reversal occurred around 780.000 years ago. Some scientists have assumed that reversals and the corresponding decrease in strength of the magnetic field could cause a big problem that increased solar radiation was able to enter Earth’s atmosphere, altering ozone levels and driving global climate shifts and extinctions.
Kirk Johnson, a director of the Smithsonian’s National Museum of Natural History, has spent much of his career studying the extinction of dinosaurs. While analyzing fossil records and timelines surrounding his research, Johnson zeroed in on the magnetic reversal that occurred around 66.3million years ago.
Deep ocean samples revealed significant climate change around 66.3 million years ago. But this also coincides with a large volcanic eruption in India called the Deccan volcanism, which produced some of the longest lava (熔岩) flows on Earth. “We’ve always owed that transition to the carbon dioxide released by the Deccan volcanism and the increase of greenhouse gases,” says Johnson. “There are two things happening: The magnetic field is changing, the Deccan volcanism is happening, and there’s climate warming. So that would be an example of coincidental climate change.”
1. The underlined word “devoid” in paragraph 2 probably means .| A．fruitless | B．obvious | C．reasonable | D．misleading |
| A．True north. | B．Geomagnetic north. | C．Magnetic north. | D．Geographic north |
| A．The geomagnetic events are to blame for the climate change. |
| B．The decrease in strength of the magnetic field resulted in extinction. |
| C．The magnetic field is changing all the time with the climate warming. |
| D．Internal forces which produce Earth’s magnetic field can alter over time |
| A．A magnetic reversal doesn’t necessarily cause climate change. |
| B．A magnetic reversal is accompanied with significant climate change |
| C．The extinction of the dinosaurs is due to the magnetic reversal. |
| D．Climate change is not relevant to the carbon dioxide emission. |
2 . Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.
But while it’s long been believed that endorphins (内啡肽) —chemicals in the body that cause happiness—are behind the so-called “runner’s high”, a study suggested that there may be more to this phenomenon than we previously knew.
According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素) may actually be responsible for this familiar great feeling.
To test this theory, the scientists turned to mice. Both mice and humans release high levels of endorphins and endocannabinoids after exercise. After exercising on running wheels, the mice seemed happy and relaxed and displayed no signs of anxiety. But after being given a drug to block their endorphins, the mice’s behavior didn’t seem to change. However, when their endocannabinoids were blocked with a different drug, their runners’ high symptoms seemed to fade.
“The long-held notion of endorphins being responsible for the runner’s high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscles you feel after working out,” Patrick Lucas Austin wrote on science blog Lifchacker.
Similar studies are yet to be carried out on humans, but it’s already known that exercise is a highly effective way to get rid of stress or anxiety. The UK’s National Health Service even prescribes (开药 方) exercise to patients who are suffering from depression. “Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can improve your mood if you have depression, and its especially useful for people with mild to moderate (中等的) depression,” it wrote on its website.
It seems like nothing can beat that feeling we get after a good workout, even if we don’t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is to put on our running shoes.
1. What did scientists from German universities recently discover?| A．Working out is a highly effective way to treat depression. |
| B．The runner’s high could be caused by endocannabinoids. |
| C．Endorphins may contribute to one’s high spirits after running. |
| D．The level of endorphins and endocannabinoids could affect one’s mood. |
| A．To find what reduces the runner’s high symptoms. |
| B．To see the specific symptoms of the runner’s high. |
| C．To identify what is responsible for the runner’s high. |
| D．To test what influences the level of endocannabinoids released. |
| A．Effect. | B．Goal. | C．Opinion. | D．Question |
| A．They can help ease depression symptoms. |
| B．They are the best way to treat depression. |
| C．They only work for those with serious depression. |
| D．They can help people completely recover from depression. |
Young people around the world have volunteered
4 . Blind imitation is self-destruction. To those who do not recognize their unique worth, imitation appears attractive; to those who know their strength, imitation is unacceptable. In the early stages of skill or character development, imitation is helpful. When I first learned to cook, I used recipes and turned out some tasty dishes.
In the field of entertainment, our culture glorifies celebrities. Those stars look great on screen. But when they step off screen, their personal lives may be disastrous.
Blessed is the person willing to act on their sudden desire to create something unique. Think of the movies, books, teachers, and friends that have affected you most deeply. They touched you because their creations were motivated by inspiration, not desperation. The world is changed not by those who do what has been done before them, but by those who do what has been done inside them.
| A．If you are going to follow someone, focus on their talent, not their bad character or unacceptable behaviors. |
| B．In daily life, imitation can hurt us if we subconsciously hold poor role models. |
| C．Creative people have an endless resource of ideas. |
| D．I was very proud of myself. |
| E．But soon I grew bored. |
| F．Study your role models, accept the gifts they have given, and leave behind what does not serve. |
5 . If you live in Tokyo or Toronto, you need a warm coat in winter. But you want one that is short, or black, or has a designer brand. The aim of advertising to change our ideas about things we want and we need.
Some ads for designer products use people’s vanity to sell a product. The ads try to create a personality for each brand. For example, one brand of watches is for people who like adventure, with ads featuring an auto racer or a pilot wearing them. Another brand of watches is for elegant and fashionable people, and the ads show wealthy travelers on a cruise ship. The watches look almost the same- only their image as different. When you buy that brand of watch, you are buying the image.
Many ads use people’s emotions to persuade us that we need the product. Think of a TV commercial that shows a woman out driving in a car on a rainy day, with her two small children. Suddenly, another car turns in front of her. The children are still smiling and laughing. The message is: This car will keep you safe.
Commercials for soft drinks often show people having a party, playing sports, or enjoying a day at the beach: Everyone in the ad is having a good time. The message is : If you buy this drink, you will have a good time too. Many ads like this are based on people’s desire for fun and enjoyment.
Knowing about psychology in advertising lets us make better decisions about the things we buy.
| A．Advertisements like this one use fear to sell products |
| B．You have to be careful not to be fooled by the ads on the Internet. |
| C．But the children may not realize that what they are viewing is unreal. |
| D．This is the reason that people spend much more money for a product. |
| E．After an ad is prepared, advertisers use psychology to make it more effective. |
| F．It helps us know the difference between what we want and what we really need. |
Be Careful on the Internet
Parents of boys at a Sydney private school have been urged to monitor their sons’ use of social networking website, with a warning
The headmaster, Timothy Wright, wrote to parents on Thursday,
Modern technology means that a careless word, an ill-willed comment or an inappropriate photograph, are on permanent record and freely available to
Dr Wright said that
He urged parents to set ground rules for use of mobile phones and the Internet and in particular to set boundaries on taking and sending images that
7 . False medical news can lead to patients’ experiencing greater side effects through the “nocebo effect (反安慰剂效果)”. Sometimes patients benefit from an intervention simply because they believe they will- -that’s the placebo effect. The nocebo effect is the opposite: Patients can experience negative effects just because they expect them. This is very true of statins. In blinded trials, patients who get statins are no more likely to report feeling muscle aches than patients who get a placebo. Yet, in clinical practice, according to one study, almost a fifth of patients taking statins report side effects, leading many to discontinue the drugs.
What else is on the fake news hit list? As always, vaccines. False concerns that the vaccine for the virus called human papilloma virus causes seizures (癫痫) and other side effects reduced coverage rates in Japan from 10 percent to less than 1 percent in recent years.
Cancer is another big target for pushers of medical misinformation — many of whom are making money off alternative therapies. “Though most people think cancer tumors are bad, they’re actually the way your body attempts to contain the harmful cells,” one fake news story reads. It suggests that surgery increases the risk of spreading harmful cells.
Silicon Valley needs to own this problem. When human health is at risk, perhaps search engines, social media platforms and websites should be held responsible for promoting or hosting fake information. The scientific community needs to do its part to educate the public about key concepts in research, such as the difference between observational studies and higher quality randomized trials.
Finally, journalists can do a better job of spreading accurate information. News sites are more likely to cover catchy observational studies than randomized controlled trials, perhaps because the latter are less likely to produce surprising results. Such coverage can overstate benefits, claiming for example, that statins could cure cancer; it can unduly emphasize potential risks, such as suggesting a misleading connection with dementia, a serious mental disorder.
1. What does the writer imply about the side effects of statins?| A．They are common in certain patients. |
| B．They aren’t like those of placebos. |
| C．They don’t really exist. |
| D．They disappear very soon. |
| A．The public should put more trust in news coverage. |
| B．Silicon Valley ought to take the blame for the fake medicine. |
| C．The scientific community ought to involve the public in research. |
| D．Journalists should be objective while reporting medical news. |
| A．on a small scale | B．overly | C．as likely as not | D．universally |
| A．To warn readers against fake medical news on the Internet. |
| B．To encourage journalists to report more positive news events. |
| C．To tell readers what role the “nocebo effect” plays in treating disease. |
| D．To teach readers how to distinguish truths from fake news. |
8 . My 21-year-old niece, a second-year undergraduate, mentioned that she watches video lectures offline at twice the normal speed. Struck by this, I asked some other students I know. Many now routinely speed up their lectures when learning offline — often by 1.5 times, sometimes by even more. Speed learning is not for everyone, but there are websites where students discuss how odd it will be once they return to the lecture theatre. One contributor wrote: “Normal speed now sounds like drunk speed.”
Education was adapting to the digital world long before Covid-19 but, as with so many other human activities, the pandemic has given learning a huge push towards the virtual. Overnight, schools and universities closed and teachers and students had to find ways to do what they do only via the internet. “This is a time for schools and systems to reimagine education without schooling or classrooms,” says Professor Yong Zhao. Dr Jim Watterston in Australia thinks that, while the traditional classroom is still alive and well, education needs to be more adventurous and flexible. Earlier this year, Zhao and Watterston co-authored a paper in which they identified some major changes that should happen in education post-lockdown.
The first concerns the content, which should emphasize such things as creativity, critical thinking and leadership, rather than the collection and storage of information. “For humans to progress in the age of smart machines, it is essential that they do not compete with machines.”, they wrote, “Instead, they need to be more human.”
The second is that students should have more control over their learning, with the teacher’s role shifting from instructor to supervisor of learning resources, advisor and motivator. This is where so-called “active learning” comes in with a growing body of research suggesting that comprehension and memory are better when students learn in a hands-on way — through discussion and interactive technologies, for example. It’s also where the concept of “productive failure” applies. Professor Manu Kapurin argues that students learn better from their own or others’ failed attempts to solve a problem before or even instead of being told how to solve it.
If the progress of the times is unable to hold back the coming revolution in education, it seems unlikely that the traditional classroom is going to have any luck in its attempts trying to turn back the clock. As Laurillard puts it, “It took a global pandemic to drive home what we’ve been saying for 20 years.”
1. By giving examples of “speed learning” in the first paragraph, the author wants to show that _________.| A．digital world is dramatically reforming the way of learning. |
| B．speed learning completely replaces normal speed learning. |
| C．returning to the lecture theatre is strange after speed learning. |
| D．education begins to adapt to digital world after Covid-19. |
| A．It is essential for smart machines to be more human. |
| B．Students should possess more information about creativity. |
| C．Students value others’ failure over their own failure. |
| D．“Active learning” calls for diverse ways of involvement. |
①learning mode ②learning motive ③learning attitude ④learning focus
| A．①④ | B．②③ | C．①③ | D．②④ |
| A．Speed learning harms students’ learning efficiency. |
| B．The coming revolution in education is irreversible. |
| C．Teachers will play a less important role in the future. |
| D．The traditional classrooms will eventually disappear. |
9 .
 New big pack from Sierra Designs The latest pack from Sierra Designs is the Gigawatt 60L. The pack has an adjustable back system that fits back lengths from 40cm to 53cm. It’s made from durable 300D polyester. Features include a zipped top and side access, oversized side and front pockets. The Gigawatt 60L weighs 1.84kg and costs £130. sierradesigns.com |  Scarpa upgrades its Maestrale boots Maestrale Re-Made ski boots are made from Polymer taken from around three tons of leftover materials. Creating a Re-Made boot from Polymer emits 27% less carbon dioxide than creating a “classic” boot from plant-based Pebax Rnew, which emits 32% less carbon dioxide than Fossil-based Plastics. The design and manufacturing process behind the Re-Made boot were developed by Scarpa’s Green Lab, the production department dedicated to sustainable solutions. A pair costs £500. scarpa.co.uk / ellis-brigham.com |
 Vasque Breeze gets sustainable update The well-established Vasque Breeze hiking boot has been modernised with environmentally friendly materials. It’s now made with recycled polyester and is the first boot to have a VasqueDry Waterproof membrane, which is made from 25% recycled materials. The Breeze is also comfortable to wear with its soft footbed. The Breeze weighs 1120 grams and comes in two widths. It costs £140. vasque.com |  The North Face launches new ski touring clothing The Dawn Turn clothing provides a layering system for ski touring designed to keep you warm, dry and freely moving. It includes a shell jacket, midlayers, trousers and accessories. The Dawn Turn 2.0 jacket won the innovation award at ISPO for its breathable layer. The cost is £350. The Dawn Turn 1.0 Jacket is made from waterproof DryVent. It features a windproof hood and oversized front pockets, and costs £325. thenorthface.co.uk |
| A．The ski athletes | B．The outdoor lovers |
| C．The environmentalists | D．The sports retailers |
| A．Both kinds of boots mentioned in the passage have two different widths. |
| B．The latest big pack from Sierra Designs has a fixed back system. |
| C．The Vasque Breeze hiking boot is both eco-friendly and waterproof. |
| D．The Dawn Turn 1.0 Jacket won the innovation award at ISPO. |
| A．Polymer > Pebax Renew >Fossil-based Plastics |
| B．Fossil-based Plastics > Pebax Renew > Polymer |
| C．Fossil-based Plastics > Polymer >Pebax Renew |
| D．Polymer >Fossil-based Plastics >Pebax Renew |
10 . Day of the Dead
Here’s one thing we know: Día de los Muertos, or Day of the Dead, is not a Mexican version of Halloween.
Day of the Dead originated several thousand years ago with the Aztec, Toltec, and other Nahua people, who considered mourning the dead disrespectful.
Today’s Día de los Muertos celebration is a mash-up(混聚) of pre-Hispanic religious rites and Christian feasts. It takes place on November 1 and 2—All Saints’ Day and All Souls’ Day on the Catholic calendar—around the time of the fall maize harvest.
Cultural heritage is not just monuments and collections of objects. The United Nations Educational, Scientific and Cultural Organization (UNESCO) says that cultural heritage also includes living expressions of culture—traditions—passed down from generation to generation.
Day of the Dead is an extremely social holiday that spills into streets and public squares at all hours of the day and night. Dressing up as skeletons is part of the fun. People of all ages have their faces artfully painted to resemble skulls, and, mimicking the Calavera Catrina, they don suits and fancy dresses.
| A．In 2008, UNESCO recognized the importance of Día de los Muertos by adding the holiday to its list of Intangible(无形的) Cultural Heritage of Humanity. |
| B．Some families place their dead loved one’s favorite meal on the altar(祭坛). |
| C．Though related, the two annual events differ greatly in traditions and tone. |
| D．Many revelers wear shells or other noisemakers to fuel the excitement—and also possibly to rouse the dead and keep them close during the fun. |
| E．Today, the calavera Catrina, or elegant skull, is the Day of the Dead’s most ubiquitous symbol. |
| F．For these pre-Hispanic(前西班牙时期的) cultures, death was a natural phase in life’s long continuum. |
