1 . A new product from Google may help people solve their sleep problems, but some privacy rights groups are concerned.
Google showed off its newest Nest Hub home assistant device on Tuesday. In addition to recognizing your voice, showing pictures, videos, news and weather, it can also track your sleep. The basic model costs about $100 and the sleep-tracking technology will be available for free for the rest of 2021. The sleep tracker makes Google’s product different from a similar home assistant from Amazon. If you put the Nest Hub beside your bed, it can follow how you sleep. That is because of a new computer chip called Soli, which can sense motion. Some people may like the new technology because they would not have to wear another device to bed. Some companies make products people can wear on their wrist to track their sleep.
Google says the new Nest Hub will create reports each week that show how long and how well a person sleeps. It will also show if they snore, cough or wake up often. The company said it studied 15,000 people over the course of 110,000 nights to develop the technology.
For people who want to know more about their sleep, the device sounds like a good idea. But, people who pay attention to privacy are worried what Google might do with the information it is gathering. Jeff Chester is one of those people. He is the director of the Center for Digital Democracy. “Google’s goal is to monetize every cell of your body,” he said.
Google recently bought FitBit, a company that makes a health tracker people can wear on their wrist. Some technology experts think Google may find a way for the Nest Hub to work with the FitBit.
Google says the sleep tracker has a lot of privacy protections. For example, it will only work if the user turns it on. The company said it will not use a person’s sleep information to try to sell advertising. But Chester said he is not so sure that promise will be kept.
1. Which is true about the Google’s new Nest Hub?| A．It’s the first device to track people’s sleep. |
| B．It has some functions as a home assistant. |
| C．It can be available for free for the rest of 2021. |
| D．It is the same as a health tracker produced by FitBit. |
| A．Because private information may be let out. |
| B．Because the sleeping problems can’t be solved. |
| C．Because sleep may be interrupted. |
| D．Because sleeping reports may be created each week. |
| A．Make money on. | B．Keep track of. | C．Take care of. | D．Give away. |
| A．Google’s New Soli |
| B．Google’s sleep problem solver |
| C．Google’s Newest Nest Hub |
| D．A Sleep Tracker |
2 . In previous recessions (经济衰退), billionaires were hit along with the rest of us; it took almost three years for Forbes’s 400 richest people to recover from losses caused in 2008’s Great Recession. But in the coronavirus recession of 2020, most billionaires have gotten richer than ever before.
Billionaires increased their new billions just as millions of other Americans ran into terrible financial problems. More than 20 million people lost their jobs at the start of the pandemic. Food banks across the country are preparing for another great increase in demand. Why are American billionaires doing so well while so many other Americans suffer? People may find part of the reasons from the following fact. Stocks (股票) are overwhelmingly owned by the wealthy, and the stock market has recovered from its early-pandemic depths much more quickly than other parts of the economy.
But some billionaires are also benefiting from economic and technological trends that were accelerated by the pandemic. Among these are the owners and investors of retail giants like Amazon, Walmart, Target, Dollar Tree and Dollar General, which have reported huge profits this year while many of their smaller competitors were defeated completely as the coronavirus spread.
Then there are companies that have bet on the rapid digitization of everything Eric Yuan, the chief executive of Zoom, became a billionaire in 2019. Now he is worth almost $20 billion. Dan Gilbert, the chairman of Quicken Loans, was worth less than $7 billion in March, now he commands more than $43 billion. But there is a great deal of stratification (层化) even among billionaires—richer billionaires got even richer in 2020 than the poorer ones did. Jeff Bezos, Amazon’s funder, was worth about $113 billion at the start of the pandemic. Now he is worth $182 billion. Two years ago, Bezos was the only “centibillionaire” on earth—the trendy neologism (a new word) for people whose wealth exceeds (超过) ￥100 billion.
1. What does the author mainly tell us in the passage?| A．Food banks are not enough in the United States. |
| B．The richest kept getting richer even in the pandemic. |
| C．The stock market recovered before the pandemic started. |
| D．400 richest people recovered from losses in the pandemic. |
| A．The American inequality. |
| B．The recovery of stock market. |
| C．The effect of the pandemic. |
| D．The food shortage across the country. |
| A．The decline of digital games. |
| B．More money lent to people by banks. |
| C．The trend of technology acceleration. |
| D．High profit earned by smaller companies. |
| A．It is a new title in the stock market after the recession. |
| B．It is a new way of solution to poverty through the world. |
| C．It is a newly established company during the pandemic. |
| D．It is a new term for people whose wealth exceeds $100 billion. |
3 . Black Valley, 63 kilometers from downtown Chongqing, is one of the best preserved natural wonders around the municipality. The national 5A-level scenic spot is a popular summer resort for sightseeing, forest adventures, outdoor camping, hunting and angling.
Located in Heishan town, Wansheng Economic Development Zone, the scenic spot spans over 103 square kilometers, 97 percent of which are covered by primitive forests. With over 110,000 negative oxygen ions in each cubic centimeter of air, it is dubbed as a natural oxygen bar and “the most beautiful healthcare-themed valley.”
Black Valley is also known as “the natural gene bank of Chongqing and Guizhou regions” for the diversity of its rare plants and wildlife, including Cathaya argyrophylla, Davidia involucrata, Trachypithecus francoisi and clouded leopards.
Scenic spot level: AAAAA
Address: Heishan town, Wansheng Economic Development Zone, 63 kilometers from downtown Chongqing Opening hours: 8:30 am - 3:30 pm (peak season from November to February), 9:00 am-3:00 pm (off season from March to October)
Ideal sightseeing season: from May to September
Ticket price: 60 yuan ($8.72) during off season and 100 yuan during peak season, sightseeing bus and cable not included.
Notes:
1. It is recommended that tourists start from the higher southern area for a downward journey.
2. The average temperature is 18.1 degrees.
3. It’s a good idea to experience the local folk culture of the Miao ethnic group, especially when you choose to visit in May when the traditional Caishan Festival of Miao ethnic group is celebrated.
1. What can we know about Black Valley?| A．It lies in downtown Chongqing. |
| B．Plants and wildlife are rarely seen there. |
| C．A visit there costs at most 100 yuan. |
| D．The air is very high in negative oxygen ions there. |
| A．January. | B．March. | C．May. | D．July. |
| A．Culture. | B．Travel. | C．Nature. | D．Wildlife. |
4 . Slowing down was the last thing on Elaine Schaefer's mind when she turned 70 last year. She'd enjoyed an ambitious travel schedule for the previous decade. She didn't feel too old to travel.
Yet many people are asking that slightly embarrassing question: Can you be too old to travel? The travel industry has already responded. Try renting a car in Europe, for example. In Croatia, Schaefer wouldn't be able to this year, because the maximum age is 70. Insurance companies require higher rates; tour operators limit certain activities. That feels like a " no" for many travelers.
Definitely some folks should think twice before traveling, but not only based on their age. It's their level of fitness, says Kirsten Veldman, a former tour guide who now edits a retirement blog. She recalls a 93-year-old who was disabled and traveling alone on a Caribbean tour. "You can't expect to ask a tour leader to be there for you 24/7 for medical care. " she says. "Tour guides don't have the time, skills, and knowledge for it. So, in this case, my advice is: he shouldn't have traveled with us in this situation. "
But some tour operators serve older travelers. For example, Grand Circle Travel started in 1958 to serve senior members. “We have travelers into their 80s and even 90s. Some travel as a couple and some alone,” says company spokeswoman Ann Shannon. “We have no age limit.”
If you ask travel experts, they'll tell you that age is just a number. It's a question of physical, and to a certain extent, mental ability. "Many of our travelers are retired, focused on keeping their good health, and are experienced travelers who have a good idea of what to expect, "says Sara Baer-Sinnott, president of Oldways, a food and nutrition nonprofit that operates tours. "Someone in their 40's may struggle more than someone in their 80s. "
1. What is expected if Schaefer travels in Croatia this year?| A．She can rent a car to go around. |
| B．She has to pay more insurance fees. |
| C．She can join in all kinds of activities. |
| D．She will receive 24/7 medical care. |
| A．His old age. | B．His lack of money. |
| C．His poor health. | D．His in sociable personality. |
| A．It is a non-profit traveling organization. |
| B．It offers service to a wide range of travelers. |
| C．It has a history of more than seven decades. |
| D．Its main customers are senior travelers. |
| A．Opposed. | B．Supportive. | C．Tolerant. | D．Objective. |
5 . Imagine a world where you move around in front of a personal computer in your own sound space. You listen to your favorite songs, play loud computer games or watch a movie—all without other people hearing the sound. That is the possibility presented by “sound beaming,” a new technology from Noveto Systems, an Israeli company.
On Friday, the company presented a desktop device that sends sound directly to a listener without the need for headphones or a special receiver. Noveto Systems gave The Associated Press (AP) a chance to test its Sound Beamer 1.0 before its debut. The AP’s Louise Dixon writes that listening to the device is like something from a science fiction movie. The sound seems so close it feels like it is inside your ears while also in front, above and behind them.
Noveto expects the device will have many uses. Office workers could listen to music or conference calls without others hearing. People could play a game, a movie or music without waking up others in the same room. Because the device does not use headphones, it is possible to hear other sounds in the room clearly.
The device uses a 3-D technology that finds and follows the ear position of the listener. It sends ultrasonic waves to create sound pockets by the user’s ears. Sound can be heard in stereo or 3-D. The 3-D method creates sound on all sides of the listener The demo version of the device included nature videos of birds on a lake, bees flying and a quiet waterway. By changing a setting, the sound can follow a listener around when they move their head. It also is possible to move out sound beam’s path and hear nothing at all.
While the idea of sound beaming is not new, Noveto was the first to launch the technology. Its chief executive officer Christophe Ramstein said a smaller version of the device will be ready for release to consumers next year.
1. What do we know about Sound Beamer?| A．It’s a device appearing in the science fiction movie. |
| B．Listeners got its sound through a receiver. |
| C．It can prevent other sound being heard. |
| D．The smaller one will be on market next year. |
| A．New version. | B．First appearance. | C．Another failure. | D．Some doubt. |
| A．How the device works. | B．How to use the device. |
| C．The device’s advantage. | D．Why the device is invented. |
| A．The introduction of a new device — sound beamer. | B．The usage of 3D technology. |
| C．The influence brought by sound beamer. | D．3D technology and listening experience. |
6 . Drone（无人机）Training for Recreational Flyers
When: Saturday 12 December 9 a. m. to 1 p. m
Website: www. drone-wise. com. Au
Where: Hall ACT
Cost: $ 285 pp（per person）
This is the perfect training course if you plan to buy a drone soon. Best of all, no experience is required and the drones will be provided，so you just need to book online and come along on the day. The training course is held at Hall ACT. The 4-hour beginners course is $285. This includes written material, use of the Drone-wise aircraft for flying and morning tea. If you are under 18 years of age, you will need to be accompanied by a parent or grown-up friend or relative. Book your place today at drone-wise. com. au/our-training-courses.
Led by Martin Bass and Tim Robinson, commercially rated drone pilots with considerable experience, this training course is a chance to get.
Basic Knowledge
Recreational drone flying and the law
Risks and how to manage them
Flying environment
Basic Flying Skills
Pre-flight planning and checks
Aircraft handling skills
Obstacle avoidance
Your Instructors:
Martin Bass. Martin is a pilot with over 20-year experience He is also a commercial drone pilot and enjoys recreational drone flying as well. In his other role as a consultant and trainer to local government, Martin is an experienced educator and holds an honorary position with the University of Western Sydney.
Tim Robinson: Tim is an experienced photographer as well as a commercial drone pilot. His photos are about nature and wildlife. Tim is also an experienced adult educator and has lectured at the University of Technology Sydney and the University of Canberra.
1. What do we know about this training course?| A．it will last for an hour. |
| B．It requires experience of flying drones. |
| C．It asks people to pay more for morning tea. |
| D．Adolescents are not allowed in with no companion. |
| A．High-level drone flying skills. |
| B．A chance to be a commercial drone pilot. |
| C．An understanding of different aircraft types. |
| D．Knowledge of dealing with risks of drone flying. |
| A．They work at the same university. |
| B．They are experienced in photographing. |
| C．They are good at commercial drone flying. |
| D．They pay much attention to wildlife protection. |
7 . It was a cold winter. The wind blew all night and the snow was blinding. When morning came, my three children and I got up and made our way to the windows. As we looked out the window, we saw that the henhouse was gone. Our three hens had been blown away.
I looked at the emptiness outside. Then I saw all three chickens sat around the edge of a white bucket. How was this violent wind not blowing them into the field beyond? I quickly pulled on long snow pants and heavy winter coat, wrapped a scarf and stuck my feet into very large boots.
I shouted at the wind as it blew. I was alone, save for my children. They stared out the window into the vast white sea of snow, their eyes peeled for any sign of movement. Outside I heard the sound of my boots as I walked against the wind.
The snow circling around me, I steadily made my way to the soft cluck-cluck-cluck sound my hens always made. When I reached them, I saw that their little feet were holding on to the edge of the bucket, heads bent forward and away from the wind. I gently lifted each hen and put it carefully into the warm inside. Then I began the freezing walk back to the small shed directly behind our house. One by one I laid my chickens on the cold floor, and they began to cluck softly.
As I shut the shed doors, my eyes went directly to the window where my children were watching. They jumped up and down cheering, and so did I! I wasn’t some dragon slayer (屠龙者) from a fairy tale. I was simply a mom, but the look on my children’s faces told me that they thought I was a hero mom.
1. What was the author’s feeling when seeing all three chickens sitting around the bucket?| A．incredible | B．worried |
| C．shy | D．confident |
| A．By searching for the white bucket. |
| B．By wearing protective clothes. |
| C．By following the sound of the hens. |
| D．By shouting at the henhouse. |
| A．The author’s children liked dragon slayers. |
| B．The children watched their mother all the way. |
| C．The author struggled to be a hero. |
| D．The author enjoyed herself in the snow. |
| A．Weather in extreme. | B．Hens in trouble. |
| C．Kindness in need. | D．Hero in the snow. |
8 . These days there is so much tempting technology to look at: smart phones, tablets, computer games and TV screens. Much of children's entertainment and education comes from using them, so it's no wonder they spend so much time staring at them. But even if the saying that looking at a screen for too long gives you square eyes isn't true, there is still some concern. So, should we be worried?
Certainly for children who spend hours glued to a screen, there is a concern that their health might be at risk. Also there is a fear that their eyesight is declining too. Although there's not much evidence to prove this yet, recent findings have brought the problem into light.
Chris Hammond, consultant at St Thomas' Hospital, says “We find short-sightedness is becoming more common It has greatly spread in East Asia, Singapore, Taiwan, South Korea where approaching 90 of 18-year-olds are now short-sighted.”
But can this be linked to children's obsession with using electronic gadgets? Annegret Dahlmann, expert at Moorfields Eve Hospital in London. says lack of natural light seems to be the key issue. She's suggested that children in East Asia study a lot, using computers, smart phones or tablets, and they go outside less. Wearing glasses is one solution, but it's not ideal.
This leads to a dilemma: achieving short-term academic success or protecting your long-term eyesight. It's always going to be a challenge to drag children away from their screens and it's likely that more and more studying will be done online. But despite that, Professor Hammond says. “In countries like urban China, where 10% of children in each class per year are becoming short-sighted from about the age of six. there's an argument for saying we should be trying to prevent it.” It's evidence we can't turn a blind eye to. So, maybe it's time to hit the “off” button and get our children outside?
1. What can we infer from the first two paragraphs?| A．Recent findings have opened our eyes to the issue of eyesight. |
| B．Looking at a screen for too long will get you square eyes. |
| C．It has been confirmed that children's eyesight is failing. |
| D．Using electronic gadgets affects children's education. |
| A．Wearing glasses. | B．Heavy school work. |
| C．Lack of natural light. | D．Booming technology. |
| A．Learning online or offline. |
| B．Reading for pleasure or exams. |
| C．Focusing on study or protecting eyesight. |
| D．Protecting eyesight or promoting technology. |
| A．Study hard. | B．Head outdoors. | C．Quit computer. | D．Challenge more. |
9 . Video calls are a common occurrence, but have you imagined being able to touch the person on the other end of the line? Scientists are making this a reality.
Researchers at the University of New South Wales, Australia, have invented a soft skin stretch device (SSD), a haptic (触觉的) device that can recreate the sense of touch. Haptic technology mimics (模仿) the experience of touch by stimulating small areas of the skin in ways that are similar to what is felt in the real world, through force, vibration (震动) or motion.
Vibration is the most common haptic technology today and has been built into many electronic devices, such as one attached to the back of a trackpad (触控板) in laptops, which mimics a button clicking. However, haptic feedback with vibration becomes less sensitive when used continuously. The existing technology also has great difficulty recreating the sense of touch with objects in virtual environments or located remotely, according to Mai Thanh Thai, lead author of the study.
The new technology overcomes issues with existing haptic devices. The research team introduced a novel method to recreate the sense of touch through soft, artificial “muscles”.
“Our three-way directional skin stretch device, built into the fingertips of the wearable haptic glove we also created, is like wearing a second skin — it’s soft, stretchable and mimics the sense of touch — and will enable new forms of haptic communication to enhance everyday activities,” said Thanh Nho Do, senior author of the study.
It works like this: Imagine you are at home and you call your friend who is in Australia. You wear a haptic glove with the SSDs and your friend also wears a glove with integrated (集成的) 3D force sensors. If your friend picks up an object, it will physically press against your friend’s fingers. And his/her glove with 3D force sensors will measure these interactions. The force signals can be sent to your glove so your device will generate the same 3D forces, making you experience the same sense of touch as your friend.
The haptic devices could be applied in various scenarios, allowing users to feel objects inside a virtual world or at a distance. This could be especially beneficial during such times like the COVID-19 pandemic when people rely on video calls to stay connected with loved ones. Or it could be used in medical practices. Doctors can feel a patient’s organ tissues with surgical tools without touching them.
1. What’s the main purpose of the text?| A．To encourage the use of a new product. |
| B．To inform readers of a new invention. |
| C．To compare different haptic devices. |
| D．To introduce the development of haptic technology. |
| A．It mimics the sense of touch through a trackpad. |
| B．It mainly uses vibration technology. |
| C．It takes the shape of a glove. |
| D．It makes virtual haptic communication possible. |
| A．The advantages of the new haptic glove. |
| B．The applications of the new haptic technology. |
| C．An explanation of how the haptic device works. |
| D．A personal experience of using SSDs during a video call. |
| A．It could replace video calls as a way to communicate. |
| B．it could be used for recreating organ tissues. |
| C．Doctors could perform surgeries at once. |
| D．Users could feel remote objects in a realistic way. |
10 . Honeybees can’t swim, and when their wings are wet, they can’t fly, either. But Chris Roh and other researchers at the California Institute of Technology found that when bees drop into bodies of water, they can use their wings to produce little waves and slide toward land-like surfers who create and then ride their own waves.
As with many scientific advances-Isaac Newton’s apple or Benjamin Franklin’s lightning bolt-Dr. Roh’s experiment began with a walk. Passing Caltech’s Millikan Pond in 2016, he observed a bee on the water’s surface producing waves. He wondered how an insect known for flight could push itself through water.
Dr. Roh and his co-worker, Morteza Gharib, used butterfly nets to collect local Pasadena honeybees and observed their surf-like movements. The researchers used a wire to restrict each bee’s bodily movement, allowing close examination of their wings. They found that the bee bends its wings at a 30-degree angle, pulling up water and producing a forward force. Bees get trapped on the surface because water is roughly three times heavier than air. But that weight helps to push the bee forward when its wings move quickly up and down. It’s a tough exercise for the bees, which the researchers guess could handle about 10 minutes of the activity.
The researchers said the surf-like movement hasn’t been documented in other insects and most semiaquatic insects use their legs for propulsion, which is known as water-walking. It may have evolved in bees, they-predicted.
Dr. Roh and Dr. Gharib have imagined many practical applications for bees’ surfing. One plan is to use their observations to design robots able to travel across sky and sea. “This could be useful for search and rescues, or for getting samples of the surface of the ocean, if you can’t send a boat or helicopter,” Dr. Gharib said.
1. What does the author intend to show by mentioning Newton and Franklin?| A．Roh’s admiration for them. | B．Roh’s chance discovery about bees. |
| C．Their outstanding talent for science. | D．Their similar achievements in discovery. |
| A．The air weight. | B．Its leg extension. |
| C．The water movement. | D．Its continuous wingbeat. |
| A．Fast flight | B．Driving force. | C．Pulling speed. | D．Explosive power. |
| A．Honeybees can surf to safety. | B．Bees help scientists make inventions. |
| C．Insects can adapt to the environment. | D．Nature is a helpful guide for discovery. |
