Slowly but surely, we’re moving closer and closer to 5G world. From smart-home security(安全) to self-driving cars, all the internet-connected devices in your life will be able to talk to each other at lightning-fast speeds. Objectively speaking, the fastest 4G download speeds in the US top out at an average of 10.42 Mbps. But by comparison, 5G promises gigabit(千兆) speeds.
“5G is one of those signs, along with artificial intelligence(人工智能)，of this coming data age,” said Steve Koenig, senior director of market research for the Consumer Technology Association. The self-driving vehicle(车辆) is a great emblem of this data age, and that is to say, it is a sign of time, because with one single task, driving, you have a large number of data coming from the vehicle itself, and a variety of sensors(传感器) are collecting a lot of information to model its environment as it moves. It’s pulling in data from other vehicles about road conditions down the lane(车道). It could be weather information, but also connected infrastructure (基础设施)construction. There is lots of data behind that task, which is why we need high speeds.
Augmented reality glasses and virtual headset haven’t yet broken the mainstream, but tech companies are joyfully betting(打赌) that these devices will eventually replace our smartphones. With 5G, that could actually happen. This is notable(显著的) because companies such as Apple are reportedly developing AR glasses to assist--or perhaps even replace--smartphones.
Ericsson stated at February' s Mobile World Congress how smart glasses could become faster and lighter with a 5G connection, because instead of being weighed down with components(部件), the glasses could rely on hardware for processing(处理)power.
But don't get too excited. There's still a lot of work to be done in the meantime, including various trials to make sure the radios play nicely with hardware and infrastructure construction, so 5G isn’t concentrated(集中) only in big cities.
1. What does the author want to stress in Paragraph 1?| A．The lightning- fast speeds of 5G. | B．The expectation of 5G world. |
| C．The difference between 4G and 5G. | D．The internet-connected devices in our life. |
| A．Exhibition. | B．Success. | C．Symbol. | D．Explanation. |
| A．How to fully expand 5G coverage(覆盖范围). | B．Smart glasses will become faster and lighter. |
| C．Why 5G isn't concentrated in big cities. | D．The importance of infrastructure construction. |
| A．A science fiction. | B．A science magazine. |
| C．A business report. | D．A film documentary. |
相似题推荐
【推荐1】One of the most fundamental changes brought about in the last decade is the rise of remote learning. With the global climate crisis and health pandemics, remote learning has become even more relevant today. Schools, universities and corporates can continue affording education and training by remote technology in the time of social distancing due to the COVID-19 crisis.
Learn Anywhere, Anytime
Gone is the need to be on campus at a specific time of day and remain there for the duration of numerous classes.
When it comes to learning, one size doesn’t fit all People have varied learning styles that change depending on the nature of the content they are trying to absorb. E-Learning allows learners to personalize their education, focusing on areas that need greater attention in more detail. Also, rather than being a one-way path where the learner listens and takes in information, online training means that learners can pursue areas that interest them in more detail.
Better Engagement
Keeping learners engaged throughout the training is one of the key struggles. One of the strengths of E-Learning is the diverse nature in which the course content is delivered.
| A．E-Learning gives people the flexibility to be able to learn at home, anytime they want. |
| B．Personalized Learning Experience |
| C．Learn more in detail |
| D．Learners are now used to and expect interactivity. |
| E．Nearly 30 percent of learners, or more than six million students, having taken at least one course online. |
| F．Overall, there are a few core reasons to opt (选择) for remote learning. |
| G．Quizzes, polls, and discussion boards also mean trainees get to discuss content and interact with one another. |
【推荐2】Imagine this scenario: In 2050, you find an envelope, inside which is an old CD marked with the date 1998, your great-grandfather's name, and the words "all overseas bank accounts".
If this were to happen, you would be very excited, at least at first. Your excitement would be quickly followed by frustration because it would be difficult for you to retrieve the information on the disk. Even if the record was still in good condition, it would be hard to find a device that could read it.
Computers and digital technology have vastly expanded our capacity to store all kinds of information, but how long will our access to this stored information last? This is a problem that began to worry technology experts. They became concerned that, without better ways of preserving information, future generations might look back on our times as the "digital dark ages". They may not have access to the digital record of our lives and our world.
Vint Cerf, a vice president at Google, argues that this could happen if we do not quickly take steps to address the issue. He uses the term "bit rot" to describe how our digital records may slowly but surely become inaccessible. Most softwares and apps that were used to create documents and websites ten or twenty years ago are already out of date, and in another fifty years they may not even be available. We can read letters from long ago, but will we be able to read a Twitter feed or access a Snapchat exchange a hundred years from now?
Computer scientist Mahadev Satyanarayanan of Carnegie Mellon University has found a way to store everything—all together in the Cloud. Using his state-of-the-art approach, Satyanarayanan has been able to recover and preserve digital records that might otherwise have been lost forever.
Both Cerf and Satyanarayanan stress the importance of deliberate preservation. Important records shall be transferred to new forms of storage technology as they appear. Otherwise, they may disappear into the digital dark ages.
1. What does the underlined word "this" refer to in the 2nd paragraph?| A．The find of a CD. | B．A travel to the future. |
| C．The recovery of bank accounts. | D．An encounter with your great-grandfather. |
| A．Post on Twitter. | B．Store via new technology. |
| C．Upload to the Cloud. | D．Record in traditional letters. |
| A．E-Waste: Dark Side of Digital Age | B．Are We Living in the Digital Dark Ages? |
| C．What Can the Digital Dark Ages Teach Us? | D．Google's Vint Cerf warns of Dark Technologies |
【推荐3】The last time the horse seriously competed with man-made transport for speed was 1830, when a stagecoach won a race against America’s first domestically manufactured steam locomotive (蒸汽机车).
Now horsekind has emerged victorious over what is in theory a far more powerful opponent — the broadband internet connection.
The contest over the gently rolling hills of the Sauerland, a pretty district in western Germany, started as a joke.
Klaus-Peter Kappest, a photographer from Oberkirchen, had been frustrated for years by the slow pace of his uploads. At 15 megabits (比特,一种信息量单位) per second, it sometimes takes him several hours to send a batch of high-resolution images to his clients. One day Mr Kappest, 52, was chatting to his colleagues at Woll, a local magazine. He suggested that he would be better off delivering his photographs by horse. “That was the most reliable communications technology in the Middle Ages,” he said. “And the editor said, ‘Well let’s do it then, let’s see which is truly faster.”
Mr Kappest turned to Jakob Schutte, a rider who lives in the same village, and Favo, his horse. The photographer burnt 4.2GB of images on to a DVD, packed it into a bag and sent it off with Favo and Mr Schutte on the 10km ride to the printer’s office in Schmallenberg.
At the same time he uploaded the data through WeTransfer, a popular file-sharing service. The computer had a 20-minute head start while Mr Schutte started off down the road, past Wilzenberg mountain. Favo made the journey in 104 minutes. The file transfer, however, was not finished until the horse had returned to Oberkirchen more than two hours later. In total it took five hours.
There was a serious point behind the story. Germany has long been known for its poor broadband and mobile internet coverage, particularly in the countryside. Two years ago a report by a network regulator found that 29 per cent of internet users received less than half the speed to which they were contractually entitled. While things have improved, a global survey carried out this year found that it took on average 16 minutes and eight seconds to download a 5GB film through a German internet connection—a little better than the UK but worse than Puerto Rico and Barbados.
In the Sauerland, Mr Kappest’s area, millions of euros have been spent on a new network but the connections have yet to be switched on in dozens of towns and villages, including Oberkirchen. The horse race did its job: Mr Kappest has since been assured that his broadband will be up and running next month.
1. The story of a stagecoach is mentioned in the first paragraph mainly to _______.| A．lead in the topic | B．introduce a new race |
| C．highlight a historical year | D．correct people’s misunderstanding |
| A．They were hired by WeTransfer. |
| B．They used to live in Schmallenberg. |
| C．They completed the task in less than two hours. |
| D．They spent five hours on the way to Oberkirchen. |
| A．Germany will realize its poor broadband service. |
| B．Mr Kappest will soon have a better internet connection. |
| C．More euros will be spent on the new network in the Sauerland. |
| D．Oberkirchen will be the first in Germany to stop any horse race, |
| A．Germany falls behind in wifi connection |
| B．History hardly repeats itself in normal ways |
| C．Uploading photographs in a modern world is all that easy |
| D．Horse power still has an advantage in race with village wifi |
【推荐1】Have you ever taken a test that you thought you could have passed easily, only to make some silly mistakes that really hurt your grade? More than a few students have done that. And some seem to do it over and over again.
There are several problem areas that can cause students to goof up or do poorly in a test that they could have passed.
Some students can become overconfident in their knowledge of the subject matter. They think they know the material better than they actually do. It is easy for students to misjudge their own knowledge, and when they realize that they don’t know the material, it is too late.
What happens more often, though, is that some students feel they are smart enough to be able to guess their way through a test. So they don’t bother studying the material. They are overconfident in their ability to figure things out.
In either case, overconfidence can result in lower grades in tests. Does this apply to you?
Another thing that can happen is that students underestimate (低估) the difficulty of the test. They expect an easy test, but the teacher throws in a real tough test that they haven’t prepared for. Sometimes the teacher may cover material in the test that students weren’t expecting. That can happen, especially if you weren’t paying attention in class.
Finally, there are students who don’t feel that getting a good grade is important to them, so they don’t bother to study or even try to do well. Such students may be trying to punish their parents, have a poor image of themselves, or are just plain foolish. Hopefully, you are not one of these students.
1. The writer believes that many students .| A．are afraid of exams |
| B．make careless mistakes |
| C．hate homework |
| D．lack confidence |
| A．Be overconfident. |
| B．Be nervous. |
| C．Make silly mistakes. |
| D．Make wrong choices. |
| A．Edward, dissatisfied with his parents. |
| B．John, expecting an easy test for him. |
| C．Dobby, believing he is the smartest in the class. |
| D．Peter, being overconfident about his ability. |
| A．The causes of overconfidence. |
| B．The causes of a poor self-image. |
| C．Ways to prepare for a test. |
| D．Ways to avoid goofing up a test. |
【推荐2】Researchers in Australia and the US are starting a multi-million dollar project to bring the Tasmanian tiger, nicknamed thylacine(袋狼), back from extinction. The last known one died in 1939.
The team say it can be recreated using stem cells(干细胞)and gene-editing(基因编辑)technology, and the first thylacine could be reintroduced to the wild in 10 years’ time. They plan to take stem cells from a living species with similar DNA, and then use gene-editing technology to ”bring back“ the extinct species - or an extremely close one of it.
It would be a great achievement for the researchers attempting it, and require a number of scientific breakthroughs.
The population of Tasmanian tigers dropped when humans arrived in Australia tens of thousands of years ago, and again when dingoes - a species of wild dog - appeared.Eventually, the species only lived free on the island of Tasmania, and was finally hunted to extinction.
If scientists were to succeed, it would mark the first “de-extinction“ event in history, but many outside experts doubt it, and believe that the project is more about media attention for the scientists and less about doing serious science.
The idea of bringing back the extinct has been around for more than 20 years. In 1999, the Australian Museum started to pursue a project to clone the Tasmanian tiger, and various attempts have been made ever since to get or rebuild DNA from samples. The US firm made headlines last year with its plans to use similar gene editing technology to bring the woolly mammoth back to life - a technological achievement yet to be made.
1. Which of the following might be the major reason for thylacine’s extinction?| A．Habitat loss. | B．Climate change. |
| C．Human activities. | D．Wild dog protection. |
| A．It will make history. |
| B．It is particularly difficult. |
| C．It deserves greater attention. |
| D．It is more of a piece of eye-catching news. |
| A．Future for bringing back the extinct. |
| B．Benefits of bringing back the extinct. |
| C．Previous efforts to bring back the extinct. |
| D．Technology needed to bring back the extinct. |
| A．Science and Technology. | B．History and Traditions. |
| C．Nature and Environment. | D．Culture and Society. |
“Small talk is where all your relationships begin,” Forbes magazine summed up.
The following is a five-step guide to making small talk from Bernardo J. Carducci, the director of the Shyness Research Institute at Indiana University Southeast, US. Let’s have a look.
Getting started
Begin by talking about the setting, such as the weather outside or the room you are in (“It’s cold in here, isn’t it?”). The purpose of talking about the setting is to show the other person that you are willing to make a conversation.
②The personal introduction
You should mention something about yourself, such as your name. A good personal introduction helps move the conversation forward.
③Looking for topics
At this point, you and your conversation partner need to find common ground. This is a good time to ask questions or to refer back to things you’ve said or heard earlier. Don’t worry if it gets quiet. The other person is probably just thinking of something to say.
④Expanding the topic
The goal is to keep the conversation going. At every stage, you should be careful not to talk too much. But don’t let the other person dominate the conversation either. If that starts to happen, mention something about yourself when he or she takes a breath.
⑤A polite ending
When ending a conversation, let the person know you’ll be leaving soon, express gratitude for the conversation and set the stage for a future conversation. For example, you could say, “I really must be going soon, but I had a great time chatting with you. I really liked hearing your opinion about that new movie. Here’s my phone number. Call or text me if you know of any other movies you think I might enjoy.”
1. According to the article, starting by talking about the setting is meant to ________.
| A．find common ground | B．impress the other person |
| C．make a conversation | D．make the room warmer |
| A．interrupt | B．control | C．adapt | D．simplify |
| A．talk about how much you want to keep talking |
| B．show that you’ve not enjoyed the talk |
| C．mention a specific movie that you love |
| D．give your opinion about the other person’s earlier comments |
| A．encourage students to make more friends |
| B．give students tips on making small talk |
| C．introduce popular topics for students |
| D．teach students how to create friendships |
【推荐1】Prospect Park Soiree (晚会)
DESCRIPTION
Attend the most celebrated party of the year! We provide the entertainment and breathtaking setting, while you gather with thousands of friends — new and old — to enjoy an evening under stars in Prospect Park.
Wear your most festive clothes, prepare a delicious feast, and dine and dance under the stars in one of Prospect Park's most secluded (僻静的) locations. Show off your creativity with a show-stopping topper — a fabulous hat — as well as table decor that celebrates the beautiful surroundings.
We are excited to introduce this year's entertainment! Inspired by the Big Band Era of Jazz, Dandy Wellington and his Band have taken the sounds of the 1930's and 40's and created a world of well-dressed music. Post-dinner, enjoy a DJ dance party with DJ Cosmo Baker, who has played alongside artists as diverse as Drake, Jay-Z, Frank Ocean, The Roots, Erykah Badu, Pitbull, Trey Songz and Moby.
Proceeds (收入) benefit Prospect Park Alliance, the non-profit organization that sustains (供养), restores and advances Prospect Park for the benefit of the diverse communities that call Brooklyn home.
EVENT DETAILS:
5pm: Gates open
6 pm: Dinner begins with live jazz of Dandy Wellington and his band.
8 pm: Dance party begins with a live set by DJ Cosmo Baker
10 pm: Soiree concludes .
Learn more and view our event galleries!
Please note:
• Guests bring their own food and table decor. Tables and chairs are provided.
• Tables each accommodate up to 10 guests.
• Groups of 20+ can contact us at soiree@prospectpark. org for assistance.
• Groups smaller than 10 people are encouraged to share tables.
• Prospect Park Soiree will take place, rain or shine.
• Help us keep the Park green: trash bags will be provided.
• Barbecues and other open flames are not allowed in Prospect Park.
• Tents and other structures are not permitted.
• Tickets are non — refundable (不可退费的), but are transferable.
1. What can we learn about Prospect Park Soiree?| A．People can attend the amusement activities for free. |
| B．People can camp in Prospect Park under the stars. |
| C．Prospect Park Alliance provides financial support for it. |
| D．Prospect Park Soiree includes a live jazz and a dance party, |
| A．you will be advised to share a table with other people |
| B．you'd better introduce him/her to other participants |
| C．you should contact the staff by emailing in advance |
| D．you are expected to bring tables and chairs with you |
【推荐2】British birdwatcher are used to bad news. House sparrow numbers have fallen from an estimated 30m to 10m since 1966. Curlews （杓鹬）have become a rare sight, their numbers sharply declining by 50% in 15 years. Cuckoos（布谷鸟）， once-frequent visitors from Africa, have decreased by 63% in the south-east in the past two decades. Earlier springs that confuse migrant birds, more efficient farming and the transformation of ruined buildings (good for nesting) into modern homes have all contributed to these woes.
But data released by the British Trust for Ornithology(BTO), a research charity, suggest some are rising. Tracking bird populations by means of regular surveys, the figures give the clearest picture of 49 species across Britain.
Blackcaps（黑顶林莺）, small woodland birds native to Germany and eastern Europe, are unwilling to return after their summer short visits: Since 1967 numbers have increased by 177%. The little egret（小白鹭）, a white heron-like bird, arrived from continental Europe in 1989 and now numbers over 5,000. Wood pigeons（斑尾林鸽）, once found shyly singing in forests, have bravely moved into cities and suburbs.
Environmental and agricultural changes have helped as well as confused birds. Modern farming techniques allow grain to be planted in the autumn rather than the spring; that helps wood pigeons feed in winter. Warmer winters mean rivers and ponds are less likely to freeze, providing the little egrets with food. James Pearce-Higgins of the BTO says that blackcaps benefit particularly from the increasing popularity of berry bushes in people’s gardens.
Birders complain nonetheless. Some of the species booming, such as carrion crows（食腐乌鸦）and buzzards（秃鹰）, are disliked. And migrant birds that extend their visits may provide competition for some bird natives. They are “muscling in and getting the first claim on breeding sites”, says Richard Cowser of the Sussex Ornithological Society. I like their human counterparts（同行）, residents of a small island stricken by global winds, British birds will have to learn to compete.
1. The underlined word “woes” in Paragraph 1 probably means____________.| A．Tragedy | B．construction | C．damage | D．migration |
| A．The access to people’s gardens. | B．Modern farming methods. |
| C．The different environmental patterns. | D．Rebuilding of abandoned houses. |
| A．All bird lovers are satisfied with the situation of birds increasing. |
| B．Migrant birds lengthening their stays cause threat to the local birds. |
| C．Black caps whose home is Germany and eastern Europe refuse to stay in Britain. |
| D．More than 5000 little egrets arrived in Britain from continental Europe in 1989. |
| A．A travel brochure. | B．An annual report. |
| C．A personal journal. | D．A magazine article. |
From my point of view, literature is very important in our lives from several points of view. For example, reading is a means of gaining culture and enriching our knowledge in different areas of activities. It can help us have a great imagination and it makes things easier when it comes to making compositions on different themes. It gives you the possibility to speak about science, even if you don’t work in this field, or you can express your opinion about a political aspect, just because you have read something connected to that.
Secondly, literature offers us the possibility to enter the world of imagination, and to leave apart the real one for a couple of hours. We come to meet kings and queens many years ago, dream in the world of the rich or imagine how life will be in the future. Sometimes, we identify ourselves with the characters in the stories we read and they can give us some clues to solve our problems and how to react in certain circumstances.
To conclude, I would like to say that literature is the perfect means to enrich our culture, to express correctly and have a rich vocabulary, to be able to interfere（干涉） in conversations in different fields of interest and to really be considered an erudite person.
1. The people who are fond of literature are those that _________.
| A．go to libraries on weekends |
| B．buy expensive books in the bookstore |
| C．keep many books in their studies |
| D．have much interest in reading |
| A．we can bring kings and queens back to life |
| B．what we read can be useful in our daily life |
| C．it is very good for us to stay alone for some hours |
| D．we can make friends with the people in the stories |
| A．hard-working | B．enthusiastic |
| C．learned | D．creative |
| A．To advise readers to like reading. |
| B．To explain the true meaning of reading. |
| C．To tell readers how to read a book. |
| D．To tell readers who has the real passion for literature. |
【推荐1】How to survive in the jungle
When you’re in the jungle (丛林), you need to leave all your mobile phone, your favorite coffee and your chocolate bars at home. When you’re in the jungle, you need only four things—water, food, shelter, and fire. You can find all of these easily, but you must know what to look for.
Let’s start with water. Even though there’s a lot of water in the jungle, you may not find it Insects can also be a good sign, because they usually build their nests near water. However, don’t only look for rivers. You can also find water in some plants such as roots and palm trees.
You can usually find a lot of food in the jungle, but you must be happy to eat things you wouldn’t normally want to, for example, insects. However, you need to know the difference between those you can eat and those that are poisonous, so start reading about them now!
For cooking and for warmth, collect dry firewood, leaves, and grass. Then make fire using dry sticks-take a box of matches or a lighter with you!
The type of shelter you need depends on the weather and the kind of animals in the jungle. Some insects can be very dangerous, so protect yourself against bites .If you don’t have any insect repellent (驱虫剂), try putting mud on your skin.
Of course, if you’re lost in the jungle and want to get home again, the sun and stars can help you find your way.
1. If you adventure in the jungle, you should bring ________.| A．chocolate bars | B．coffee |
| C．a mobile phone | D．a box of matches |
| A．food | B．fire |
| C．water | D．shelter |
| A．Learning about what food is safe. |
| B．Protecting the skin from sunlight. |
| C．Predicting the weather by the sun and stars. |
| D．Collecting leaves to build a place to live in. |
| A．A business newspaper. | B．A health guide. |
| C．A travel magazine. | D．A science journal. |
【推荐2】The Ebola virus, which has killed more than 670 people in West Africa, is a “threat” to the UK, Foreign Secretary Philip Hammond has told the BBC.
A woman is being treated for ‘ Ebola-like’ symptoms at the Queen Elizabeth’s Hospital in Hong Kong after recently returning from a strip to Africa.
The woman has been given the all-clear after testing negative for Ebola, according to South China Morning Post.
The 39-year-old woman was kept in isolation while undergoing tests, but a hospital source said she did not have the virus and was in a stable condition.
Ebola virus first emerged in 1976 in outbreaks of Ebola hemorrhagic fever in Zaire and Sudan. Ebola that broke out in Zaire has one of the highest case fatality rates (病死率) of any human virus, roughly 90%.
Symptoms include vomiting and diarrhea, fever, weakness, headache and sore throat. Those struck down can also suffer internal and external bleeding. The virus is spread through human contact. There is no cure.
1. Which city in the text has the highest death rate by Ebola?| A．Hong Kong. | B．London. |
| C．Sudan. | D．Zaire. |
| A．The woman was tested positive for Ebola. | B．People suffering Ebola virus will not bleed. |
| C．Ebola virus can be got from person to person. | D．Scientists have found the solution to the virus. |
| A．a news report | B．a story |
| C．a notice | D．an advertisement |
【推荐3】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. |
