1 . If you suddenly find yourself working from home or another remote location, you're going to miss those interactions with other people. Video conferencing can help by allowing you to talk face-to-face, even if it is via a screen. Jitsi is one of those free video conferencing apps you can use to connect.
Jitsi is a set of open-source projects that allows you to easily build and deploy secure videoconferencing solutions. At the heart of Jitsi are Jitsi Videobridge and Jitsi Meet, which let you have conferences on the internet, while other projects in the community enable other features such as audio, dial-in, recording, and simulcasting.
Jitsi started life as a way to talk to people over the internet using audio and video. Over the course of a decade, though, it's become so much more. Today, Jisi is:
A vibrant developer community.
First and foremost, Jitsi is a community of developers that are pushing the envelope of video conferencing quality on the web.
The foundation of some really amazing products.
The community members have developed countless projects and products that started with Jitsi code.
A crazy good, completely free video conferencing solution that anyone can use.
Jitsi is a favorite videoconferencing solution for anyone with privacy concerns, journalists, for example. There's a reason so many people use Jitsi Meet as a Skype alternative for video conferencing.
Unlike other videoconferencing technologies, Jitsi Videobridge, the heart of Jitsi, passes everyone’s video and audio to all participants, rather than mixing them first. Currently, Jitsi supports a maximum of up to 75 participants per call, although performance may suffer with more than 35. The project is working on “going beyond 100” participants at once. The service supports phone in audio participants in both the hosted and self-hosted versions. The service supports screen sharing and has mobile apps for iPhone and Android.
Now Jitsi has surpassed 10 million monthly average users. There are no extra payments to Jitsi, and the project remains free thanks to 8x8 (a company), which uses the technology in its own products.
1. The central services of Jitsi lie in ________.A.a set of open-source projects | B.world's best video conferences |
C.free features like audio and dial-in | D.Jitsi Videobridge and Jitsi Meet |
A.Jitsi helps with the privacy problem in videoconferencing |
B.Jitsi mixes everyone's video and audio to all participants |
C.Jitsi supports screen sharing in the hosted version |
D.Jitsi works on 100 participants at most right now |
A.it has surpassed 10 million monthly average users |
B.8x8 uses the technology in its own products |
C.only paid apps can ensure users' privacy |
D.users have limited access to Jitsi |
2 . It was summer 2019 in Aurora, Colorado, when CBS News first met Finn Lanning, a math teacher, and Damien, his student who always stood out.
Lanning was astonished when Damien told him he was not coming back to
But the real
“It
They got along smoothly, although Damien refused to get too excited. “I’m afraid the bubbles will burst one day. It’s kind of bad thinking about that, but some people actually do that. Like, they’ll be happy with you one day and then just kick you out the next,” Damien said. Lanning told him he’s not going anywhere,
In the nearly two years since CBS News shared their story, Damien was able to get a transplant and he’s a much
It’s proof that sometimes
A.school | B.hospital | C.community | D.family |
A.failure | B.risk | C.disease | D.change |
A.informed | B.forced | C.invited | D.followed |
A.trouble | B.danger | C.threat | D.fight |
A.hopeful | B.unsuitable | C.important | D.hard |
A.hurt | B.hit | C.touched | D.affected |
A.called in | B.believed in | C.gave in | D.took in |
A.whether | B.whatever | C.wherever | D.whenever |
A.politer | B.braver | C.healthier | D.warmer |
A.miracles | B.accidents | C.fairytales | D.surprises |
3 . I knew I shouldn’t be drawing in maths class, but just couldn’t
I suddenly realized Mr. Galvin was calling my name, “Peter, what is your—
Even though I hadn’t even started the problem, I replied in my most
Mr. Galvin, in a tone of
As I searched for an answer, Mr. Galvin reached my desk. He lifted my book with the
“Peter,” asked Mr, Galvin, “just what do you expect to
Wrong answer! The class gave a(n)
I had plenty of opportunity to think of other
A.avoid | B.remain | C.resist | D.doubt |
A.campaign | B.trick | C.fight | D.attempt |
A.need | B.could | C.must | D.dare |
A.equally | B.frequently | C.purely | D.normally |
A.imagination | B.solution | C.evaluation | D.description |
A.looking | B.shouting | C.pointing | D.walking |
A.hold | B.adjust | C.balance | D.replace |
A.dramatic | B.reasonable | C.respectful | D.friendly |
A.confidence | B.honesty | C.pride | D.strength |
A.regardless of | B.in spite of | C.in terms of | D.instead of |
A.disappointment | B.understanding | C.distrust | D.shock |
A.far | B.many | C.soon | D.long |
A.feel | B.help | C.have | D.let |
A.consideration | B.assumption | C.expectation | D.impression |
A.drawing | B.photo | C.story | D.report |
A.mood | B.space | C.courage | D.time |
A.drive | B.set | C.show | D.make |
A.taken | B.put | C.played | D.settled |
A.polite | B.nice | C.appreciative | D.average |
A.instructions | B.replies | C.suggestions | D.methods |
4 . Across the globe only 10 percent of the population are left-handed—and it has been that way for thousands of years. But when you look into the sports world, lefties exist in large numbers. Why? The answer lies in the relative balance between cooperation and competition in human society, says a new study published in Britain’s The Journal of the Royal Society Interface.
The study by professor Daniel Abrams and Mark Panaggio of applied science points out that for society to function efficiently—hand in hand—cooperation is key. And cooperation favors same-handedness—so we can share tools, for example, and more easily teach each other skills.
On the other hand, competition favors the element of surprise. And this is why “left-handers have the advantage in any sport where there’s direct physical contest,” Abrams said. “They have the surprise advantage in that they practice more against the right-handers, but the right-handers don’t practice much against them. “It’s also the reason lefties haven’t been wiped out,” evolutionarily speaking. “Left-handed people have always had this built-in advantage for this kind of competition,” Abrams said. Thus, so long as there’s competition in society, lefties will survive.
Adams and Panaggio created a computer model that correctly predicted the percentage of left-handed athletes in several sports. About half of major league baseball players and pro boxers are left-handers, while among PGa golfers the number of lefties is a mere 4 percent.
“Golf is one of our go-to examples for the cooperative effect,” Abram said. “Left-handers seem to be selected against in golf, and the reason for that is that golf has a cooperative aspect to it. Especially when people first begin playing golf they tend to borrow or rent clubs, and left-handed clubs are harder to find and they’re more expensive. So there’s a cooperative advantage in that people can share clubs when they’re all of the same handedness.”
But it’s not just golf that can be challenging. Living as a left-handed minority in a world designed for the right-handed majority can be really dangerous. “Evidence from outside the sports world is that left-handers are more likely to be involved in accidents in various ways,” Abrams said.
So when picking players for the office softball team, you want to choose as many lefties as you can to maximize your chance of winning—but don’t be surprised when they show up to the game injured.
1. There are more right-handers in the society because ________.A.they can work together better | B.people prefer to use right hands |
C.lefties are unwilling to cooperate | D.it has been the case for a long time |
A.Sports that surprise audience. |
B.Sports that value individual practice. |
C.Sports that require professional skills. |
D.Sports that involve physical competition. |
A.Because golf has a high entry barrier. |
B.Because left handers get injured easily |
C.Because golf Lakes up much lime and energy. |
D.Because left handers find it hard to win in golf. |
A.compare and educate | B.explain and inform |
C.discuss and persuade | D.examine and assess |
5 . Removing gender bias
Tailors worked out long ago that men and women have different shapes. Yet this message has failed to enter many other areas of design. Car seat belts, for example, which date back to the 1880s, are often still more suitable for men, who tend to sit farther back than women when driving. And today the most forward-looking tech companies on Earth are still placing old-school bias (偏见;成见) into new products. Consider smart phones. Most are too big to fit comfortably into the average woman’s hand, as are many video-game controllers.
An obvious part of the explanation for their design problem is that men control most of its companies—male-run firms receive 82% of venture-capital (VC) funding. Male bosses may be unaware of the problems women face. They may not flag up obvious areas of concern, or ask the right questions when doing their research for a new product design. And once an idea gets the green light, it will then be handled by product-design and engineering teams, three-quarters of whose members are men. These teams often use data to make decisions, but mixing all users together means they may fail to spot trends based on sex differences. Dependence on historical data, and the lack of data on underrepresented groups, can also create bias in algorithms (算法).
Next comes testing. Naturally, designers test original models on their intended customers, but they may not get feedback from a broad enough group of people. There is also the risk of confirmation bias—designers may listen to what they want to hear, and ignore negative reactions from some groups of users.
Tech’s design bias needs fixing for moral, safety and business reasons. The ethical importance is obvious: it is wrong that women have to make do with a “one-size-fits-men” world, as Caroline Criado Perez, a writer, puts it. As for safety, regulators can tackle that by banning things that are dangerous to women—including seat belts—because they are no! designed properly.
But there is also a powerful business case for avoiding design bias, because huge opportunities are being missed. Women are 50% of the population, and make 70—80% of the world’s consumer-spending decisions.
Change is coming. The first voice-recognition systems struggled to understand female voices, but most now manage just fine. “Femtech” start-up companies, which focus on women’s health and well-being, may raise MYM 1 billion by the end of this year. VC funds and tech firms are hiring more women. Ensuring that products are designed for everyone would lead to happier and safer customers. For the companies that get it right, that means higher profits. What is holding them back?
1. The underlined part in Paragraph 2 means ________.A.hits the market | B.gets approval |
C.becomes successful | D.comes into being |
A.Why tech’s design bias needs to be fixed. |
B.How gender bias is affecting tech companies. |
C.Where gender bias in product design is rooted. |
D.Who is to blame for gender bias in tech companies. |
A.tech companies are unwilling to change |
B.design bias may result in missed opportunities |
C.male workers benefit more in engineering teams |
D.tech companies are poor at making user-friendly products |
A.Uncertain. | B.Sceptical. |
C.Positive. | D.Negative. |
6 . Terasa Hill did not intend to do something unplanned. It began when Terasa, who had grown up around horses, was observing a horse auction (拍卖). A chestnut: racehorse was for sale? The horse had an injured leg, but that didn’t matter “She was the most beautiful thing I’d ever seen,” said Terasa.
When the bidding started, Terasa surprised herself by stepping in. There was no way she was going to allow that horse to have an uncertain future. At MYM450, the bidding stopped! Terasa became the new owner of Sierra, a nervous racehorse with an unfortunate past.
Sierra, limping (病) and hurt with pain from a broken knee, became a labour of love for Terasa. After three long months of nursing her under the guidance of a local animal doctor, the leg recovered and Terasa’s most impressive game began.
It wasn’t only Sierra’s leg that needed to recover; Sierra needed to relearn how to trust people. Terasa thought the best way to win Sierra’s trust and fondness was to feed her treats. Terasa provided Sierra with many treats, but none passed the sniff (嗅) test—Sierra turned up her nose at all of them. Desperate, Terasa experimented by making her own mixture of molasses and grains, which she baked in her own kitchen. The cookies were a hit with Sierra and other horses, sending Terasa’s life in a new direction.
Terasa look her treats, called “Barnies,” to a local store. They sold like hotcakes, and within months local businessmen began demanding for more. Terasa’s kitchen was no longer big enough for the increased demand, which forced her to move her operation to an Oshawa company.
Then a serious health problem threatened to derail her plans. Terasa called upon the same determination that had helped her save Sierra to help her overcome her own illness. Family and friends came to her rescue and kept Barnies Ltd. going. Almost a year later, healthy and more resolute than ever, Terasa found a national distributor and Bainies began selling in 144 stores across Canada.
And what about Sierra, the inspiration for all this success and change? The horse has fully recovered and has become a wonderful riding horse.
1. Why did Terase try making her own cookies?A.To be able to work from home. |
B.To set up a business of her own. |
C.To provide a healthy diet for Sierra. |
D.To find a way to bond with the horse. |
A.Reject. | B.Develop. | C.Launch. | D.Ruin. |
A.Determined and caring. | B.Capable and courageous. |
C.Ambitious and out-going. | D.Strong-willed and humor. |
A.A Remarkable recovery |
B.Love me, Love my horse |
C.A Labour of Love Inspires a Career |
D.Animal Lover Lifts Limping Horse’s Spirits |
7 . Record collector
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Pink Floyd---Shooting For The Moon
It records the development of this globally loved band, from their beginnings back in 1967 to their lasting position half a century later, by the way of archive (档案,史料).
The rolling Stones: Making The Legend
This special magazine focusing on the archives tells the best story of the rise of The rolling Stones. It’s a must-have for fans of the world’s greatest rock’n’roll band—and for anyone who wants to know how rock became what it is today, this is the bookazine for you.
The Beatles—Vol 1 Evolution (1940--64)
This is the first in die set of three. Its 116 pages cover every single, album and EP from 1962 to 1964, all newly reviewed by top experts, forming a UK Beatles discography (录音作品名录) with comments: a must-have for fans and collectors.
The Beatles—Vol 2: Revolution (1965-67)
It is the second in the set. Covering their creative glory years in the mid-60s, up to the recording of their masterpiece, Sgt Pepper’s, it presents interviews with their great producer George Martin, Pattie Boyd and Beatles insider Tony Bramwell, 116 pages of quality reading.
The Beatles—Vol 3: Ascension (1968-2019)
It is the third in the series, covering their final years together, from the story of the White Album to the success of Abbey Road. There is analysis of what finally broke up the band.
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1. If a reader is interested in the development of rock’n’roll, he will choose ________.A.Pink Floyd—Shooting For The Moon |
B.The Rolling Stones: Making The Legend |
C.The Beatles—Vol 2: Revolution (965—7) |
D.The Beatles—Vol 3: Ascension (1968—2019) |
A.It includes interviews. | B.It accesses the archives. |
C.It has a total of 116 pages. | D.It tells why the band broke up. |
A.£37.47. | B.£31.47. |
C.£34.50. | D.£28.50. |
8 . Fire Prevention Information
The University of Adelaide employs a full-time staff of fire prevention professionals. They inspect all campus buildings and test and maintain all sprinkler(喷水灭火装置)systems fire alarms and fire extinguishers (灭火器). They also provide educational programs or fire safety in the residence hall. Whenever you move to a new area, you should locate the fire alarm pull stations and the two exits nearest your room.
Fire Alarms
The floors of all campus buildings are equipped with manual(手动的)fire alarm systems which include fire alarm pull stations and pipes. Most are also equipped with automatic fire alarm systems consisting of heat detectors, smoke detectors and sprinklers. For your safety, never tamper with(胡乱摆弄)these systems. False fire alarms are illegal and may lead to imprisonment.
Fire Drills
A fire drill will be conducted in your residence hall every semester. During a fire drill, please do the following:
·Take your room key and ID close and lock the door to your room.
·Exit immediately from the nearest emergency exit do not use a lift.
·Meet outside of your residence hall and wait for further instructions.
Fire Extinguishers
Fire extinguishers are located on each floor and in each apartment. Use a fire extinguisher only if you have been trained to do so. Irresponsible use of a fire extinguisher can create a dangerous situation for other residents and could result in damage to personal property.
Misuse of a fire extinguisher will result in fines.
Smoke Detector
A smoke detector is on the ceiling in your room. Some buildings also have heat detectors on the ceilings. Do the following to ensure the safe operation of your smoke detector:
·If your smoke detector is working properly, the red light should be on. If the red light is not blinking(闪动),contact residence hall staff immediately.
·Do not cover or block your smoke detector in any way.
·If a smoke detector sets off an alarm and there is no fire or smoke, inform your hall staff.
1. What do the automatic fire alarm systems include?A.Pipes and smoke detectors. | B.Smoke detectors and sprinklers. |
C.Fire alarm pull stations and pipes. | D.Sprinklers and fire alarm pull stations |
A.Using them wrongly results in punishment. |
B.Irresponsible use of them can damage them. |
C.Improper use of them can destroy the apartment. |
D.Using them without a trainer present is forbidden. |
A.contact the hall staff regularly | B.cover the things that burn easily |
C.start the smoke detector in a fire | D.make certain the red light is working |
9 . Enough “meaningless drivel”. That’s the message from a group of members of the UK government who have been examining how social media firms like LinkedIn gather and use social media data.
The House of Commons Science and Technology Committee’s report, released last week, has blamed firms for making people sign up to long incomprehensible legal contracts and calls for an international standard or kitemark (认证标记) to identify sites that have clear terms and conditions.
“The term and conditions statement that we all carelessly agree to is meaningless drivel to anyone,” says Andrew Miller, the chair of the committee. Instead, he says, firms should provide a plain-English version of their terms. The simplified version would be checked by a third party and awarded a kitemark if it is an accurate reflection of the original.
It is not yet clear who would administer the scheme, but the UK government is looking at introducing it on a voluntary basis. “we need to think through how we make that work in practice,” says Miller. Would we pay any more attention to a kitemark? “I think if you went and did the survey, people would like to think they would,” says Nigel Shadbolt at the University of Southampton, UK, who studies open data. “We do know people worry a lot about the inappropriate use of their information. But what would happen in practice is another matter,” he says.
Other organisations such as banks ask customers to sign long contracts they may not read or understand, but Miller believes social media requires special attention because it is so new. “We still don’t know how significant the long-term impact is going to be of unwise things that kids put on social media that come back and bite them in 20 years’ time,” he says.
Shadbolt, who gave evidence to the committee, says the problem is that we don’t know how companies will use our data because their business models and uses of data are still evolving. Large collections of personal information have become valuable only recently, he says.
The shock and anger when a social media firm does something with data that people don’t expect, even if users have apparently permission, show that the current situation isn’t working. If properly administered, a kitemark on terms and conditions could help people know what exactly they are signing up to. Although they would still have to actually read them.
1. What does the phrase “meaningless drivel” in paragraphs 1 and 3 refer to?A.Legal contracts that social media firms make people sign up to. |
B.Warnings from the UK government against unsafe websites. |
C.Guidelines on how to use social media websites properly. |
D.Insignificant data collected by social media firms. |
A.social media firms would conduct a survey on the kitemark scheme |
B.people would pay as much attention to a kitemark as they think |
C.a kitemark scheme would be workable on a nationwide scale |
D.the kitemark would help companies develop their business models |
A.their users consist largely of kids under 20 years old |
B.the language in their contracts is usually harder to understand |
C.the information they collected could become more valuable in future |
D.it remains unknown how users’data will be taken advantage of |
A.think carefully before posting anything onto such websites |
B.read the terms and conditions even if there is a kitemark |
C.take no further action if they can find a kitemark |
D.avoid providing too much personal information |
10 . For a long time Gabriel didn’t want to be involved in music at all. In his first years of high school, Gabriel would look pityingly at the music students,
This
A.travelling | B.marching | C.pacing | D.struggling |
A.rising up | B.coming up | C.driving up | D.turning up |
A.betray | B.accept | C.avoid | D.appreciate |
A.Therefore | B.However | C.Thus | D.Moreover |
A.part | B.nature | C.basis | D.spirit |
A.missed | B.disliked | C.enjoyed | D.denied |
A.transparent | B.obvious | C.false | D.similar |
A.because | B.but | C.though | D.so |
A.ear | B.taste | C.heart | D.voice |
A.occurred to | B.took to | C.appealed to | D.held to |
A.change | B.chance | C.mission | D.function |
A.proved | B.showed | C.stressed | D.meant |
A.pushing | B.dragging | C.lifting | D.rushing |
A.admiring | B.pitying | C.annoying | D.teasing |
A.over | B.aside | C.behind | D.out |