While dog keepers realize their dogs can read their moods accurately,scientists have always been a little doubtful.Now thanks to some researchers at the University of Veterinary Medicine in Vienna,Austria,we finally have some convincing evidence.

    For their study,biologist Corson Miller and his team exposed eleven selected dogs to digital images of women that were either angry or happy.Half the dogs were rewarded for touching the screen when shown a happy face,while the other half got their treat for selecting those that appeared angry.

    Interestingly,the dogs were not provided with the entire face.Some dogs were shown only upper halves while the others observed lower halves.That's because the scientists believe humans show their emotions on their entire face.

    After some training like how to recognize small differences like the wrinkles between the eyes or the changes in their shape that accompany the happy or angry expressions,the dogs were mostly able to identify the correct expression not only on a familiar face but on a strange face.The researchers concluded the dogs were smart enough to read human emotions.

    They also found those being trained to read angry expressions took a longer time to learn.They guess it may be because dogs find angry faces disgusting,causing them to withdraw quickly.However,once the smart dogs realized they were getting rewarded,the trepidation seemed to disappear.In fact,the dogs had such a good time playing the computer "game" that scientists had a hard time keeping them away from the touch screens after the study was completed.

    The researchers also noticed only dogs with a male owner had a harder time understanding the expressions correctl. Since the touchscreen models were all females, this confirmed what has been observed in previous studies-dogs are more efficient at reading facial expressions of people that are the same gender as their owner.

    How do you get a good night's sleep?

    You may put your pillow (枕头) at the proper height, drink a glass of hot milk or maybe listen to some light music before bedtime. {#blank#}1{#/blank#}When World Sleeping Day falls on March 21, it will be a good time to explore a long-ignored fact that may make you feel tired after you wake up. Scientists have discovered that the position of your spine (脊椎) is very important when you sleep.

    {#blank#}2{#/blank#}Let's have a look at the advantages and disadvantages of each position.

On your back

    Sleeping on your back is the ideal (理想的) position to be in. First of all, your spine is in the best position.{#blank#}3{#/blank#}The downside is the greater likelihood of snoring (打鼾) and sleep apnea (窒息).

Lying on belly

    {#blank#}4{#/blank#}Dr Vaclav Vojta, a US child development specialist, said this is bad for your back because it takes away the natural curve (曲线) of your lumbar (腰部的) spine. But he also noted that this helps to prevent some snoring and sleep apnea.

On your side

    Sleeping on our sides happened naturally while we were in the womb (子宫).{#blank#}5{#/blank#}Plus, sleeping on your side (the left side in particular) has been reported to reduce troublesome digestive problems like heartburn. The downside is the “dead arm” and finger numbness (麻木) from this position.

A. Lying face down with your legs straight and your arms right by your sides is a bad idea.

B. Sleeping on your side can be a quick fix for snoring and can help to improve breathing.

C. Do you and your friends ever talk about your sleeping position with each other?

D. And a new study suggests that the sleeping position has something to do with it.

E. Of the three sleeping positions, which one do you usually go for?

F. You are also less likely to have digestive (消化的) problems.

G. But one thing you may tend to ignore is sleeping positions.

    A recent study led by researchers from the National University of Singapore (NUS) has found a clear link between the color of a taxi and its accident rate. An analysis of 36 months of detailed taxi, driver and accident data from two fleets of yellow and blue taxis in Singapore suggested that yellow taxis have fewer accidents than blue taxis. The higher visibility (能见度） of yellow makes it less difficult for drivers to avoid getting into accidents with yellow taxis, leading to a lower accident rate.

    The study was led by Prof Ho. To test whether there was a relationship between the color of a taxi and the number of accidents the taxi had, the research team analysed data collected by the largest taxi company in Singapore. The researchers found that yellow taxis have about 6. 1 fewer accidents per 1,000 taxis per month.

    They also studied the economic effect of changing the color of the entire fleet of taxis to yellow. The Singapore taxi company involved in the study owns about 16,700 taxis in a ratio (比例) of one yellow to three blue taxis. If a commercial decision is made to switch from blue to yellow taxis, 76. 6 fewer accidents will occur per month or 917 fewer accidents per year.

    Assuming an average repair cost of $1,000 per car and a downtime of six days, the color of all taxis to yellow could produce an annual saving of $2 million.

    “We are eager to continue to validate (证实) the findings of our study by looking at the use of yellow in other types of public transport, such as school buses. For example, we hope to compare the accident rates of yellow school buses against those of other colors to find out if yellow is indeed a safer color for school buses. Besides, we' re also interested to look at private-hire vehicles and do a comparison of the accident rates of vehicles that are of different colors explained Prof Ho.

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

    Old age may not sound exciting.But recent findings offer good news for older people and for people worried about getting older.Researchers found that people become happier and experience less worry after they reach the age of fifty.In fact，they say by the age of eighty­five，people are happier with their life than they were when they were eighteen years old.

    The findings came from a survey of more than three hundred forty thousand adults in the United States.The Gallup Organization questioned them by telephone in 2008.At that time，the people were between the ages of eighteen and eighty­five.The researchers asked questions about emotions like happiness，sadness and worry.They also asked about mental or emotional stress.

    Arthur Stone in the Department of Psychiatry and Behavioral Science at Stony Brook University in New York led the study.His team found that levels of stress were highest among adults between the ages of twenty­two and twenty­five.The findings showed that stress levels dropped sharply after people reached their fifties.

    The study also showed that men and women have similar feeling patterns as they grow older.However，women at all ages reported more sadness，stress and worry than men.

    Researchers say they do not know why happiness increases as people get older.One theory is that，as people grow older，they grow more thankful for what they have and have better control of their feelings.They also spend less time thinking about bad experiences.

    Professor Stone says the emotional patterns could be linked to changes in how people see the world，or maybe even changes in brain chemistry.

    The researchers also considered possible influences like having young children，being unemployed or being single.But they found that influences like these did not affect the levels of happiness and well­being related to age.

    A new library in Tianjin—Tianjin Binhai Public Library—recently became an online hit. The Daily Mail described it as the “world's ultimate (终极的) library”, while the word “breathtaking” was the choice of Newsweek magazine. One look at the library and you'll see why. With its futuristic (未来主义) design and walls loaded with books, it's the dream library of every book lover.

    But as the surprise continues, there's a burning question lying in the back of our minds: When physical bookstores are closing down one by one, what makes libraries safe from the wave of digitalization (数码化)? And do we really still need libraries now that we've got the Internet in our hands?

    Reporter Ian Clark has the answer. “Libraries are not declining in importance—people are simply changing the way they use them,” he wrote on the Guardian website.

    What Clark means is that libraries have shifted from simply being storehouses of books to a medium to help “bridge the gap between the haves and the have-nots” according to website Libraries Are Essential. Since not everyone can afford a smartphone, a tablet or an Internet connection, and not everyone has the know-how to search the Internet correctly and efficiently, it's public libraries that make sure that these resources and technologies are available to a larger group of people.

    "Nobody is trying to sell you anything in the library. There is no pressure to buy and there is no judgment of your choices/' Anne Goulding, a professor at Victoria University in New Zealand, wrote on the Newsroom website. “There are few other spaces that you can just 'be' without somebody questioning your presence or your motivation."

    On Wednesday, January 13th, I performed on stage for the first time. As someone who takes part in so many activities, it's extremely difficult to find the time to be a part of any production. For me, it was a once-in-a-lifetime opportunity to try acting through the Senior Play Project.

    Auditions (试镜)came first. They weren't particularly difficult, more to see who may be a better fit tor certain roles. We were told our roles in the various plays, and started to work immediately.

    I was unsure of how I was as an actor, and I had to learn a lot fast: actions, my place in the story, my reactions, and countless other small details... As I began to improve as an actor, I was able to understand my characters better.

    My first character is a man named Roger who is a senior advisor to a presidential candidate in a play called "The Spot." He's a short-tempered guy who says what he wants and takes what he wants to assist his candidate in today's tough political races. He's on the set of The Spot, an advertisement for the candidate, to make sure everything runs smoothly and that any problems are dealt with quickly and efficiently.

    While I had really interesting characters, and the plays were funny and such a great experience to act in, I really love the Senior Play Project for the people. I worked with 12 other seniors who not only loved what they were doing, but offered help and advice throughout my entire learning process.

    Between the lights, sounds, costume and makeup, and plenty more, theatre is a team sport just like basketball or baseball. There are no small parts; there is no one who isn't needed. I've learned to appreciate live theatre, and the effort that every person in the show, both onstage and offstage, puts into it.