2 . As data and identity theft becomes more and more common, the market is growing for biometric(生物测量) technologies—like fingerprint scans—to keep others out of private e-spaces. At present, these technologies are still expensive, though.

Researchers from Georgia Tech say that they have come up with a low-cost device(装置) that gets around this problem: a smart keyboard. This smart keyboard precisely measures the cadence(节奏) with which one types and the pressure fingers apply to each key. The keyboard could offer a strong layer of security by analyzing things like the force of a user’s typing and the time between key presses. These patterns are unique to each person. Thus, the keyboard can determine people’s identities, and by extension, whether they should be given access to the computer it’s connected to—regardless of whether someone gets the password right.

It also doesn’t require a new type of technology that people aren’t already familiar with. Everybody uses a keyboard and everybody types differently.

In a study describing the technology, the researchers had 100 volunteers type the word “touch” four times using the smart keyboard. Data collected from the device could be used to recognize different participants based on how they typed, with very low error rates. The researchers say that the keyboard should be pretty straightforward to commercialize and is mostly made of inexpensive, plastic-like parts. The team hopes to make it to market in the near future.

3 . With the young unable to afford to leave home and the old at risk of isolation(孤独), more families are choosing to live together.

The doorway to peace and quiet, for Nick Bright at least, leads straight to his mother-in-law, she lives on the ground floor, while he lives upstairs with his wife and their two daughters.

Four years ago they all moved into a three-storey Victorian house in Bristol - one of a growing number of multigenerational families in the UK living together under the same roof. They share a front door and a washing machine, but Rita Whitehead has her own kitchen, bathroom, bedroom and living room on the ground floor.

“We floated the idea to my mum of sharing at a house,” says Kathryn Whitehead. Rita cuts in: “We spoke more with Nick because I think it’s a big thing for Nick to live with his mother-in-law.”

And what does Nick think? “From my standpoint, it all seems to work very well. Would I recommend it? Yes, I think I would.”

It’s hard to tell exactly how many people agree with him, but research indicates that the numbers have been rising for some time. Official reports suggest that the number of households with three generations living together had risen from 325,000 in 2001to 419,000 in 2013.

Other varieties of multigenerational family are more common. Some people live with their elderly parents; many more adult children are returning to the family home, if they ever left. It is said that about 20% of 25-34-year-olds live with their parents, compared with 16% in 1991.The total number of all multigenerational households in Britain is thought to be about 1.8 million.

Stories like that are more common in parts of the world where multigenerational living is more firmly rooted. In India, particularly outside cities, young women are expected to move in with their husband’s family when they get married.

4 . Bacteria are an annoying problem for astronauts. The microorganisms(微生物) from our bodies grow uncontrollably on surfaces of the International Space Station, so astronauts spend hours cleaning them up each week. How is NASA overcoming this very tiny big problem? It’s turning to a bunch of high school kids. But not just any kids. It is depending on NASA HUNCH high school classrooms, like the one science teachers Gene Gordon and Donna Himmelberg lead at Fairport High School in Fairport, New York.

HUNCH is designed to connect high school classrooms with NASA engineers. For the past two years, Gordon’s students have been studying ways to kill bacteria in zero gravity, and they think they’re close to a solution(解决方案). “We don’t give the students any breaks. They have to do it just like NASA engineers,” says Florence Gold, a project manager.

“There are no tests,” Gordon says. “There is no graded homework. There almost are no grades, other than ‘Are you working towards your goal?’ Basically, it’s ‘I’ve got to produce this product and then, at the end of year, present it to NASA.’ Engineers come and really do an in-person review, and...it’s not a very nice thing at times. It’s a hard business review of your product.”

Gordon says the HUNCH program has an impact(影响) on college admissions and practical life skills. “These kids are so absorbed in their studies that I just sit back. I don’t teach.” And that annoying bacteria? Gordon says his students are emailing daily with NASA engineers about the problem, readying a workable solution to test in space.

5 . We’ve all been there: in a lift, in line at the bank or on an airplane, surrounded by people who are, like us, deeply focused on their smartphones or, worse, struggling with the uncomfortable silence.

What’s the problem? It’s possible that we all have compromised conversational intelligence. It’s more likely that none of us start a conversation because it’s awkward and challenging, or we think it’s annoying and unnecessary. But the next time you find yourself among strangers, consider that small talk is worth the trouble. Experts say it’s an invaluable social practice that results in big benefits.

Dismissing small talk as unimportant is easy, but we can’t forget that deep relationships wouldn’t

even exist if it weren’t for casual conversation. Small talk is the grease(润滑剂) for social communication, says Bernardo Carducci, director of the Shyness Research Institute at Indiana University Southeast. ＂Almost every great love story and each big business deal begins with small talk,＂ he explains. ＂The key to successful small talk is learning how to connect with others, not just communicate with them.＂

In a 2014 study, Elizabeth Dunn, associate professor of psychology at UBC, invited people on their way into a coffee shop. One group was asked to seek out an interaction(互动) with its waiter; the other, to speak only when necessary. The results showed that those who chatted with their server reported significantly higher positive feelings and a better coffee shop experience. ＂It’s not that talking to the waiter is better than talking to your husband,＂ says Dunn. ＂But interactions with peripheral(边缘的) members of our social network matter for our well-being also.＂

Dunn believes that people who reach out to strangers feel a significantly greater sense of belonging, a bond with others. Carducci believes developing such a sense of belonging starts with small talk. ＂Small talk is the basis of good manners,＂ he says.

6 . Many cities around the world today are heavily polluted. Careless methods of production and ________ of consumer demands for environment friendly products have ________ the pollution problem. One ________ is that millions of tons of glass, paper, plastic, and metal containers are produced, and these are difficult to get rid of.

________, today, more and more consumers are choosing “green” and demanding that the products they buy should be safe for the environment. ________ they buy a product, they ask questions like these: “Will this shampoo damage the environment?” “Can this metal container be ________ or can it only be used once?”

A recent study showed that two ________ five adults now consider the environmental safety of a product before they buy it. This means that companies must now change the ________ they make and sell their products to make sure that they are “green,” that is, friendly to the environment.

Only a few years ago, it was impossible to find green products in supermarkets, but now there are hundreds. Some supermarket products ________ labels to show that the product is green. Some companies emphasize that their products are clean and safe in their advertising and have made it their main selling ________.

The ________ for a safer and cleaner environment is making companies rethink ________ they do business. No longer will the public accept the old ________ of “Buy it, use it, throw it away and forget it.” The public ________ is still here, and companies are ________ their act gradually.

8 . While English is getting more important in our schools, Chinese has become popular among foreign kids. But Chinese can be more difficult to learn. At least 16-year-old Piao Chenglong thinks so. “English is easier for me. Chinese characters (汉字) have too many strokes (笔画),” said Piao. “But I want to learn it. I want to study at Beijing University when I grow up.” Piao is from Korea. He came to China in 2008.

In Korea, there are more than 300, 000 Chinese learners like Piao. Some Korean students begin to learn to write the language on their first day at school. To help students learn Chinese, Korea holds speaking competitions for high school students every year.

Chinese isn’t just popular in Korea. People from all the world want to learn it. The Ministry of Education of China says that nearly 130 million people from 85 countries are learning Chinese. This number will be increasing to 800 million in the coming years.

In America, Chinese is the second most popular foreign language after Spanish. Some American middle schools have Chinese classes. Students learn to make jiaozi and tie Chinese knots (中国结). Some even try to write and draw in the Chinese way!

People want to learn Chinese because China is becoming such an important country. Foreign countries want to understand China better to help them with business. The Chinese government is also helping the world learn Chinese. It has sent more than 200 Chinese teachers to more than 60 countries in the world. Many more Confucius Institutes (孔子学院) will be set up in the world. These institutes will teach Chinese to foreign students.

9 . Social media is taking over our lives: Facebook, Instagram, Twitter and now, TikTok. These social media platforms have changed from a way to stay connected to an industry where even kids can make money off their posts. While this may seem like another opportunistic innovation, it’s really full of hidden false realities.

The median income (中位收入) recorded in the United States of America was about $63,000 in 2018. TikTokers can make anywhere from $50,000 to $150,000 for a TikTok brand partnership, and TikTokers with over a million followers can make up to $30,000 a month—$360,000 a year. They are making more than the average person trying to feed their family and keep a roof over their heads simply by posting a 15-second video.

This is mad in more ways than one. Not only is it an overpaid “job”, it promotes undeserved admiration from viewers and a false sense of reality. Many of these famous TikTokers are still teens and the effects of fame at such an early stage in life might cause issues later in life, such as mental illness. Teens between the ages of 13 and 17 make up 27% of TikTok viewers, who can be easily influenced by what they are watching. They can put a false sense of self-value into who they look up to and what they represent: money, fame, being considered conventionally attractive.

While TikTok has become a great tool for marketing, it’s important to understand how this content affects young viewers. If we’re constantly consuming content that shows us all we need to do to be successful is be conventionally attractive and post a 15-second video featuring a new dance, it will challenge our knowledge of what really makes someone successful and will in turn affect our individual work ethnics (伦理). What about the people who miss birthdays and family holidays due to their jobs and aren’t getting paid nearly as much as these TikTokers?

Richard Colyer, president and creator of Metaphor, Inc, had his own view on this issue. “It sounds great that kids can make money for doing the latest dance moves in a 15-second video, but we should feed the minds of kids and not just their bank accounts. TikTok can be great if used properly. Money alone is not good; technology alone is not good and connectedness can be bad if it is only online.”

Again, as a fellow consumer of TikTok, I do enjoy the app when I have some time to kill and need a good laugh. I’m not against someone making a living on entertainment, but what does getting famous by posting a 15-second video teach young people?