1 . Monkeys seem to have a way with numbers.
A team of researchers trained three Rhesus monkeys to associate 26 clearly different symbols consisting of numbers and selective letters with 0-25 drops of water or juice as a reward. The researchers then tested how the monkeys combined—or added—the symbols to get the reward.
Here’s how Harvard Medical School scientist Margaret Livingstone, who led the team, described the experiment: In their cages the monkeys were provided with touch screens. On one part of the screen, a symbol would appear, and on the other side two symbols inside a circle were shown. For example, the number 7 would flash on one side of the screen and the other end would have 9 and 8. If the monkeys touched the left side of the screen they would be rewarded with seven drops of water or juice; if they went for the circle, they would be rewarded with the sum of the numbers—17 in this example.
After running hundreds of tests, the researchers noted that the monkeys would go for the higher values more than half the time, indicating that they were performing a calculation, not just memorizing the value of each combination.
When the team examined the results of the experiment more closely, they noticed that the monkeys tended to underestimate (低估) a sum compared with a single symbol when the two were close in value—sometimes choosing, for example, a 13 over the sum of 8 and 6. The underestimation was systematic: When adding two numbers, the monkeys always paid attention to the larger of the two, and then added only a fraction (小部分) of the smaller number to it.
“This indicates that there is a certain way quantity is represented in their brains, ”Dr. Livingstone says. “But in this experiment what they’re doing is paying more attention to the big number than the little one.”
1. What did the researchers do to the monkeys before testing them?| A．They fed them. |
| B．They named them. |
| C．They trained them. |
| D．They measured them. |
| A．They could perform basic addition. |
| B．They could understand simple words. |
| C．They could memorize numbers easily. |
| D．They could hold their attention for long. |
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.
Why do the researchers develop the smart keyboard?| A．To reduce pressure on keys. |
| B．To improve accuracy in typing. |
| C．To replace the password system. |
| D．To cut the cost of e-space protection. |
3 . We may think we’re a culture that gets rid of our worn technology at the first sight of something shiny and new, but a new study shows that we keep using our old devices (装置) well after they go out of style. That’s bad news for the environment — and our wallets — as these outdated devices consume much more energy than the newer ones that do the same things.
To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each product throughout its life — from when its minerals are mined to when we stop using the device. This method provided a readout for how home energy use has evolved since the early 1990s. Devices were grouped by generation — Desktop computers, basic mobile phones, and box-set TVs defined 1992. Digital cameras arrived on the scene in 1997. And MP3 players, smart phones, and LCD TVs entered homes in 2002, before tablets and e-readers showed up in 2007.
As we accumulated more devices, however, we didn’t throw out our old ones. “The living-room television is replaced and gets planted in the kids’ room, and suddenly one day, you have a TV in every room of the house,” said one researcher. The average number of electronic devices rose from four per household in 1992 to 13 in 2007. We’re not just keeping these old devices — we continue to use them. According to the analysis of Babbitt’s team, old desktop monitors and box TVs with cathode ray tubes are the worst devices with their energy consumption and contribution to greenhouse gas emissions (排放) more than doubling during the 1992 to 2007 window.
So what’s the solution (解决方案)? The team’s data only went up to 2007, but the researchers also explored what would happen if consumers replaced old products with new electronics that serve more than one function, such as a tablet for word processing and TV viewing. They found that more on-demand entertainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.
1. Why did Babbitt’s team conduct the research?| A．To reduce the cost of minerals. |
| B．To test the life cycle of a product. |
| C．To update consumers on new technology. |
| D．To find out electricity consumption of the devices. |
| A．The box-set TV. |
| B．The tablet. |
| C．The LCD TV. |
| D．The desktop computer. |
4 . Some parents will buy any high-tech toy if they think it will help their child, but researchers said puzzles help children with math-related skills.
Psychologist Susan Levine, an expert on mathematics development in young children at the University of Chicago, found children who play with puzzles between ages 2 and 4 later develop better spatial skills. Puzzle play was found to be a significant predictor of cognition(认知) after controlling for differences in parents’ income, education and the amount of parent talk, Levine said.
The researchers analyzed video recordings of 53 child-parent pairs during everyday activities at home and found children who play with puzzles between 26 and 46 months of age have better spatial skills when assessed at 54 months of age.
“The children who played with puzzles performed better than those who did not, on tasks that assessed their ability to rotate(旋转)and translate shapes,” Levine said in a statement.
The parents were asked to interact with their children as they normally would, and about half of children in the study played with puzzles at one time. Higher-income parents tended to have children play with puzzles more frequently, and both boys and girls who played with puzzles had better spatial skills. However, boys tended to play with more complex puzzles than girls, and the parents of boys provided more spatial language and were more active during puzzle play than parents of girls.
The findings were published in the journal Developmental Science.
In which aspect do children benefit from puzzle play?| A．Building confidence. |
| B．Developing spatial skills. |
| C．Learning self-control. |
| D．Gaining high-tech knowledge. |
5 . I have a special place in my heart for libraries. I have for as long as I can remember. I was always an enthusiastic reader, sometimes reading up to three books a day as a child. Stories were like air to me and while other kids played ball or went to parties, I lived out adventures through the books I checked out from the library.
My first job was working at the Ukiah Library when I was 16 years old .It was a dream job and I did everything from shelving books to reading to the children for story time.
As I grew older and became a mother, the library took on a new place and an added meaning in my life. I had several children and books were our main source(来源) of entertainment. It was a big deal for us to load up and go to the local library, where my kids could pick out books to read or books they wanted me to read to them.
I always read ,using different voices ,as though I were acting out the stories with my voice and they loved it !It was a special time to bond with my children and it filled them with the wonderment of books .
Now, I see my children taking their children to the library and I love that the excitement of going to the library lives on form generation to generation.
As a novelist, I’ve found a new relationship with libraries. I encourage readers to go to their local library when they can’t afford to purchase a book. I see libraries as a safe haven(避风港) for readers and writers, a bridge that helps put together a reader with a book. Libraries, in their own way, help fight book piracy(盗版行为) and 1 think all writers should support libraries in a significant way when they can. Encourage readers to use the library. Share library announcements on your social media. Frequent them and talk about them when you can.
What does the author call on other writers to do?| A．Sponsor book fairs. |
| B．Write for social media. |
| C．Support libraries. |
| D．Purchase her novels. |
6 . The connection between people and plants has long been the subject of scientific research. Recent studies have found positive effects. A study conducted in Youngstown, Ohio, for example, discovered that greener areas of the city experienced less crime. In another，employees were shown to be 15% more productive when their workplaces were decorated with houseplants.
The engineers at the Massachusetts Institute of Technology(MIT)have taken it a step further changing the actual composition of plants in order to get them to perform diverse，even unusual functions. These include plants that have sensors printed onto their leaves to show when they’re short of water and a plant that can detect harmful chemicals in groundwater.“We’re thinking about how we can engineer plants to replace functions of the things that we use every day,” explained Michael Strano, a professor of chemical engineering at MIT.
One of his latest projects has been to make plants glow(发光)in experiments using some common vegetables. Strano’s team found that they could create a faint light for three-and-a-half hours. The light, about one-thousandth of the amount needed to read by, is just a start. The technology, Strano said, could one day be used to light the rooms or even to turn trees into self-powered street lamps.
In the future，the team hopes to develop a version of the technology that can be sprayed onto plant leaves in a one-off treatment that would last the plant’s lifetime. The engineers are also trying to develop an on and off “switch”where the glow would fade when exposed to daylight.
Lighting accounts for about 7% of the total electricity consumed in the US. Since lighting is often far removed from the power source(电源)-such as the distance from a power plant to street lamps on a remote highway-a lot of energy is lost during transmission(传输).Glowing plants could reduce this distance and therefore help save energy.
1. What is the function of the sensors printed on plant leaves by MIT engineer?| A．To detect plants’ lack of water |
| B．To change compositions of plants |
| C．To make the life of plants longer. |
| D．To test chemicals in plants. |
| A．They will speed up energy production. |
| B．They may transmit electricity to the home. |
| C．They might help reduce energy consumption. |
| D．They could take the place of power plants. |
7 . Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
What is Dr. Norberg’s suggestion for someone trying race walking?| A．Getting experts’ opinions. |
| B．Having a medical checkup. |
| C．Hiring an experienced coach. |
| D．Doing regular exercises. |
8 . Henry Raeburn (1756-1823)
The Exhibition
This exhibition of some sixty masterpieces celebrating the life and work of Scotland’s best loved painter, Sir Henry Raeburn, comes to London. Selected from collections throughout the world, it is the first major exhibition of his work to be held in over forty years.
Lecture Series
Scottish National Portrait (肖像画) Gallery presents a series of lectures for the general public. They are held in the Lecture Room. Admission to lectures is free.
An Introduction to Raeburn Sunday 26 Oct., 15:00 DUNCAN THOMSON | Raeburn’s English Contemporaries Thursday 30 Oct., 13:10 JUDY EGERTON |
Characters and Characterisation in Raeburn’s Portraits Thursday 6 Nov., 13:10 NICHOLAS PHILLIPSON | Raeburn and Artist’s Training in the 18th Century Thursday 13 Nov., 13:10 MARTIN POSTLE |
Exhibition Times
Monday-Saturday 10.00-17.45 Sunday 12.00-17.45
Last admission to the exhibition: 17.15. There is no re-admission.
Closed: 24-26 December and 1 January.
Admission
£4. Children under 12 years accompanied by an adult are admitted free.
Schools and Colleges
A special low entrance charge of £2 per person is available to all in full-time education, up to and including those at first degree level, in organised groups with teachers.
What is the right time for attending Raeburn’s English Contemporaries?
| A．Sun. 26 Oct. |
| B．Thurs. 30 Oct. |
| C．Thurs. 6 Nov. |
| D．Thurs.13 Nov. |
9 . We journalists live in a new age of storytelling, with many new multimedia tools. Many young people don’t even realize it’s new. For them, it’s just normal.
This hit home for me as I was sitting with my 2-year-old grandson on a sofa over the Spring Festival holiday. I had brought a children’s book to read. It had simple words and colorful pictures — a perfect match for his age.
Picture this: my grandson sitting on my lap as I hold the book in front so he can see the pictures. As I read, he reaches out and pokes (戳) the page with his finger.
What’s up with that? He just likes the pictures, I thought. Then I turned the page and continued. He poked the page even harder. I nearly dropped the book. I was confused: Is there something wrong with this kid?
Then I realized what was happening. He was actually a stranger to books. His father frequently amused the boy with a tablet computer which was loaded with colorful pictures that come alive when you poke them. He thought my storybook was like that.
Sorry, kid. This book is not part of your high-tech world. It’s an outdated, lifeless thing. An antique, like your grandfather. Well, I may be old, but I’m not hopelessly challenged, digitally speaking. I edit video and produce audio. I use mobile payment. I’ve even built websites.
There’s one notable gap in my new-media experience, however: I’ve spent little time in front of a camera, since I have a face made for radio. But that didn’t stop China Daily from asking me last week to share a personal story for a video project about the integration of Beijing, Tianjin and Hebei province.
Anyway, grandpa is now an internet star — two minutes of fame! I promise not to let it go to my head. But I will make sure my 2-year-old grandson sees it on his tablet.
Why did the kid poke the storybook?
| A．He took it for a tablet computer. |
| B．He disliked the colorful pictures. |
| C．He was angry with his grandpa. |
| D．He wanted to read it by himself. |
10 . A British woman who won a S1 million prize after she was named the World's Best Teacher will use the cash to bring inspirational figures into UK schools.
Andria Zafirakou, a north London secondary school teacher, said she wanted to bring about a classroom revolution (变革). “We are going to make a change,” she said. “I’ve started a project to promote the teaching of the arts in our schools.”
The project results from the difficulties many schools have in getting artists of any sort - whether an up-and-coming local musician or a major movie star - into schools to work with and inspire children.
Zafirakou began the project at Alperton Community School, her place of work for the past twelve years. “I've seen those magic moments when children are talking to someone they are inspired by - their eyes are shining and their faces light up,” she said. “We need artists. more than ever in our schools."
Artist Michael Craig-Martin said: “Andria's brilliant project to bring artists from all fields into direct contact with children is particularly welcome at a time when the arts are being downgraded in schools." It was a mistake to see the arts as unnecessary, he added.
Historian Sir Simon Schama is also a supporter of the project. He said that arts education in schools was not just an add-on. “It is absolutely necessary. The future depends on creativity and creativity depends on the young. What will remain of us when artificial intelligence takes over will be our creativity, and it is our creative spirit, our visionary sense of freshness, that has been our strength for centuries."
What should be stressed in school education according to Schama?
| A．Moral principles. |
| B．Interpersonal skills. |
| C．Creative abilities. |
| D．Positive worldviews. |
