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  3. Mark Ramirez, a senior executive at AOL, could work in the most comfortable leather chair, if he wanted. No, thanks. He prefers

Mark Ramirez, a senior executive at AOL, could work in the most comfortable leather chair, if he wanted. No, thanks. He prefers

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问题     Mark Ramirez, a senior executive at AOL, could work in the most comfortable leather chair, if he wanted. No, thanks. He prefers to stand most of the day at a desk raised above stomach level. "I’ve got my knees bent; I feel totally alive, " he said. "It feels more natural to stand. "
    In the past few years, standing has become the new sitting for 10 percent of AOL employees at the firm’s Virginia campus, part of a standing ovation (赞同) among accountants, programmers, telemarketers and other office workers across the nation.
    GeekDesk, a California firm that sells $800 desks raised by electric motors, says sales will double this year.
    Standers give various reasons for taking to their feet: It makes them feel more focused, prevents doze, and makes them feel like a general even if they just push paper. Former defense secretary Donald Rumsfeld works standing up. So does novelist Philip Roth.
    But unknown to them, a debate is spreading among some experts and public-health researchers about whether all office workers should be encouraged to stand—to save lives.
    Doctors point to surprising new research showing higher rates of obesity, heart disease and even death among people who sit for long stretches. A study earlier this year in the American Journal of Epidemiology showed that among 123000 adults followed over 14 years, those who sat more than six hours a day were at least 18 percent more likely to die during the time period studied than those who sat less than three hours a day.
    "Every rock we turn over when it comes to sitting is stunning, " said Marc Hamilton, a leading researcher on inactivity physiology at the Pennington Biomedical Research Center in Louisiana. " Sitting is hazardous. It’s dangerous. We are on the tip of a major revolution. " He calls sitting "the new smoking".
    Not so fast, other experts say. Standing too much at work will cause more long-term back injuries. Incidences of varicose veins (静脉曲张) among women will increase. The heart will have to pump more.
    Hedge, the Cornell professor, isn’t a fan of all this standing. "Making people stand all day is dumb, " he said.
    The sensible and most cost-effective strategy, he said, is to sit in a neutral posture, slightly leaned, with the keyboard on a tray above the lap. This position promotes positive blood flow. Workers should occasionally walk around, stretch and avoid prolonged periods at the desk. The key, he said, is movement, not standing.
The study in the American Journal of Epidemiology is mentioned to show that________.
选项 A、obese people tended to die young
B、people who sat for long stretches showed higher rates of health problems
C、those who sat more than six hours a day were likely to die young
D、those who sat less than three hours a day lived longer
答案B
解析 根据题干中的American Journal of Epidemiology定位到原文第六段第二句。细节辨认题。本题考查作者提及《美国流行病学杂志》的一项研究的目的。文中的例子一般用来证明论点，由此可知，答案应在定位段第一句。该句指出，新的研究表明久坐的人肥胖、患心脏病甚至死亡的比率更高，B项与原文意思相符，故为答案。
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