For centuries in Spain and Latin America, heading home for lunch and a snooze with the family was something like a national righ

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问题     For centuries in Spain and Latin America, heading home for lunch and a snooze with the family was something like a national right, but with global capitalism standardizing work hours, this idyllic habit is fast becoming an endangered pleasure. Ironically, all this is happening just as researchers are beginning to note the health benefits of the mid-afternoon nap.
    According to a nationwide survey, less than 25 percent of Spaniards still enjoy siestas. And like Spain, much of Latin America has adopted Americanized work schedules, too, with shortened lunch times and more rigid work hours. Last year the Mexican government passed a law limiting lunch breaks to one hour and requiring its employees to work their eight-hour shift between 7 a.m. and 6 p.m. Before the mandate, workers would break up the shift—going home midday for a long break with the family and returning to work until about 9 or 10 p.m. The idea of siesta is changing in Greece, Italy and Portugal, too, as they rush to join their more "industrious" counterparts in the global market.
    Most Americans I know covet sleep, but the idea of taking a nap mid-afternoon equates with laziness, unemployment and general sneakiness. Yet according to a National Sleep Survey poll, 65 percent of adults do not get enough sleep. Numerous scientific studies document the benefits of nap taking, including one 1997 study on the deleterious effects of sleep deprivation in the journal Internal Medicine. The researchers found that fatigue harms not only marital and social relations but worker productivity.
    According to Mark Rosekind, a former NASA scientist and founder of Alertness Solutions in Cupertino, Calif., which educates businesses about the advantages of sanctioning naps, we’re biologically programmed to get sleepy between 3 and 5 p.m. and 3 and 5 a.m. Our internal timekeeper—called the circadian clock—operates on a 24-hour rotation and every 12 hours there’s a dip. In accordance with these natural sleep rhythms, Rosekind recommends that naps be either for 40 minutes or for two hours. Latin American countries, asserts Rosekind, have had it right all along. They’ve been in sync with their clocks; we haven’t.
    Since most of the world is sleep-deprived, getting well under the recommended eight hours a night(adults get an average of 6.5 hours nightly), we usually operate on a kind of idle midday. Naps are even more useful now that most of us forfeit sleep because of insane work schedules, longer commute times and stress. In a study published last April, Brazilian medical researchers noted that blood pressure and arterial blood pressure dropped during a siesta.
In the second sentence of para. 1, "all this" refers to______.

选项 A、the habit of napping
B、the standardizing of work hours
C、the decline of the siesta tradition
D、the growth of global capitalism

答案C

解析 属指代关系题。“all this”所在的上下文的大意是:几百年来,西班牙人和拉丁美洲人一直把回家吃午饭、午睡当成一种国民权利,但是随着资本主义全球化的进程使工作时间标准化,这种田同般的生活习惯正迅速演变成一种岌岌可危的享受。具有讽刺意味的是:所有这一切(allthis)发生的同时,研究人员也开始注意到午觉对于身体健康的种种好处。由此可见all this指的是上文中的this idyllic habit is fast becoming an endangered pleasure,其中idyllic habit,endangered分别对应选项C中的siesta tradition(午休习惯)和decline(衰退)。因此,选项C正确。
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