D

    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 That's bad news for the environment – and our wallets – as these outdated devices consume much more energy than the newer ones that do the same things.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 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 kid's 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 TV's 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 tables instead of TVs and desktop computers could cut energy consumption by 44%.

    The yearly Academy Awards ceremony was once a private affair. Now, because of television, it is very much a public affair. Hundreds of people gather in Hoolywood to see the Oscars presented to outstanding actors, and others involved（参与） in the motion picture industry. Millions more watch on the television.

    It all began on May 16, 1929, when 270 men and women sat down to dinner at the Hollywood Roosevelt Hotel. There was no secret about the winners. The names of the winners had been known for months. Janet Gaynor, for example had won as Best Actress. Douglas Fairbanks presented her with the famous gold statue（塑像）. The little statue was not then called Oscar. Like a new actor, Oscar was unknown. About six years later, it somehow got that renowned name. A number of explanations have been offered for its origin(由来), but nobody knows the true story for certain.

    Nowadays the result of the Oscar voting are kept secret. Only two people know the winners before the names are announced at the ceremony. The counting of votes is not done by one group of people but by different groups. Nobody except two members of an accounting company sees the final results.

    The information is not kept in open files. Winners' names are placed in closed envelopes. The accountants each carry a complete set of envelopes to the ceremony. One set is simply a spare to be used in case something happens to the other one.

    Have you ever kept your eyes groundward while otherwise presenting yourself well at a job interview? People who do often wonder why they fail to get the job despite having made full preparations and taken into consideration every possible interview question. To a large degree, the problem is not about your verbal preparation but rather your body language at an interview, Preparing your body language for an interview is crucial (至关重要的)，because it has various meanings in different cultures.

    And how does the language of gestures vary between Chinese and Western society? Instead of examining the theory, let's focus on handshake, the most practical gesture that easily escapes our attention. Patti Wood once said, “Most of the hiring decisions are made in the first 10 seconds of an interview.” The way you shake the interviewer's hand could create the first impression you make. A weak handshake implies lack of confidence. But is it wise to use a powerful handshake? It depends. This would not be a problem if you were shaking hands with a Westerner as they appreciate a firm handshake. But for Asian people a gentler handshake is better, as an over-powerful grip might seem offensive.

    Hand gestures are another major difference. Western prospective employers are likely to appreciate interviewees who use their hands expressively, and to assume that those who keep their hands hidden are either distrustful or lacking in confidence. The opposite applies in Asia. Be sure, therefore, to keep your hand gestures to a minimum at interviews with local companies in China.

    There are, apart from these two differences, other elements of body language that could ruin your interview wherever you are. You should make eye contact with your interviewer. That doesn't mean you should glare directly into the interviewer's eyes. The best point of focus would be a little lower than the middle point. Secondly, you shouldn't touch your nose, lips or forehead. This tells the interviewer that you are either extremely nervous or lying. Lastly, never jiggle (抖动)your legs or fold your arms. Leg jiggling delivers clearly the message that you feel uneasy and want to escape as quickly as possible. Likewise, crossing your arms implies that you are either defensive or bored.

    A research entitled “Non-Verbal Clues in Job Interviews” found that interviewers spotted a high connection between motivation, social skills and employment. Job seekers hence communicate their motivation and social skills through their body language. This crucial factor determines your fate in any job interview, which is why I cannot overemphasize (过分强调)the significance of body language and gestures. If you now recall your last failed interview, perhaps it is easier to understand why you didn't get the job.

    Forget Cyclists, Pedestrians are Real Danger

    We are having a debate about this topic. Here are some letters from our readers.

    ■ Yes, many cyclists behave dangerously. Many drivers are disrespectful of cyclists. But pedestrians are probably the worse offenders.

    People of all ages happily walk along the pavement with eyes and hands glued to the mobile phone, quite unaware of what is going on around them. They may even do the same thing while crossing a road at a pedestrian crossing or elsewhere. The rest of us have to evade (避让) them or just stand still to wait for the unavoidable collision.

    The real problem is that some pedestrians seem to be, at least for the moment, in worlds of their own that are, to them, much more important than the welfare of others.

—Michael Horan

    ■ I loved the letter from Bob Brooks about cyclists (Viewpoints, May 29). I am afraid they seem to think they own the roads.

    I was walking across Altrincharn Road one morning when a cyclist went round me and on being asked what he was doing he shouted at me.

    The government built a cycle lane on the road but it is hardly used.

    The police do nothing. What a laugh they are!

    The cyclists should all have to be made to use the cycle lanes and wear helmets, fluorescent (发荧光的)jacket and tights at night and in the morning. They should pay some sort of tax and be fined for not wearing them.

—Carol Harvey

    ■ Cyclists jump on and off pavements (which are meant for pedestrians), ride at speed along the pavements, and think they have a special right to go through traffic lights when they are on red.

    I was almost knocked down recently by a cyclist riding on the pavement when there was a cycle lane right next to him.

    Other road users, including horse riders, manage to obey the rules so why not cyclists?

    It's about time they had to be registered and insured, so when they do hit a pedestrian or a vehicle, or cause an accident, at least they can be traced and there might be an opportunity to claim.

—JML

    Write to Viewpoints of the newspaper.

    As Internet users become more dependent on the Internet to store information, are people remember less？If you know your computer will save information, why store it in your own personal memory, your brain？Experts are wondering if the Internet is changing what we remember and how.

    In a recent study, Professor Betsy Sparrow conducted some experiments. She and her research team wanted to know the Internet is changing memory. In the first experiment, they gave people 40 unimportant facts to type into a computer. The first group of people understood that the computer would save the information. The second group understood that the computer would not save it. Later, the second group remembered the information better. People in the first group knew they could find the information again, so they did not try to remember it.

    In another experiment, the researchers gave people facts to remember, and told them where to find the information on the Internet. The information was in a specific computer folder(文件夹). Surprisingly, people later remember the folder location better than the facts. When people use the Internet, they do not remember the information. Rather, they remember how to find it. This is called "transactive memory (交互记忆)".

    According to Sparrow, we are not becoming people with poor memories as a result of the Internet. Instead, computer users are developing stronger transactive memories; that is, people are learning how to organize huge quantities of information so that they are able to access it at a later date. This doesn't mean we are becoming either more or less intelligent, but there is no doubt that the way we use memory is changing.

Why should mankind explore space? Why should money, time and efforts be spent exploring and 1 for something with so few apparent benefits? Why should many resources be spent on space 2 than on conditions and people on Earth?

These are questions that, understandably, are very often asked. Perhaps the best answer 3 in our genetic makeup（基因构成）as human beings. What4 our ancestors to move from the trees into the plains. and on into all 5 areas and environments? The wider the 6 spread of a species, the better its chance of 7 . Perhaps the best reason for exploring space is this genetic tendency to expand 8 possible.

Nearly every successful civilization has 9 , because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be 10 destroyed by the danger. With knowledge, we can 11 its effects.

Exploration also allows minerals and other potential（潜在的）resources 12 . Even if we have no 13 need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques 14 through exploration. The techniques may have medical applications which can 15 the length or quality of our lives.