中国银行2010笔试完形填空真题

[中国银行笔试篇]笔试篇 12月上旬，顺利收到笔试通知，里面说全国有近10万申请人orz...然后确认，接着过了一个星期收到邮件，通知考试时间和地点等信息。一看考试时间，立马傻了眼：14:0018:00。现在的...+阅读

When trelers pass from one time zone to another, they suffer from disrupted circadian rhythms, an unfortable feeling known as jet lag. For instance, if you trel from California to New York, you lose 3 hours according to your body's clock. You will feel tired when the alarm rings at 8 a.m. the next morning because, according to your body's clock, it is still 5 a.m. It usually takes several days for your body's cycles to adjust to the new time. To reduce the effects of jet lag, some doctors try to manipulate the biological clock with a technique called light therapy. They expose people to special lights, many times brighter than ordinary household light, for several hours near the time the subjects want to wake up. This helps them reset their biological clocks and adjust to a new time zone.Symptoms much like jet lag are mon in people who work nights or who perform shift work. Because these people's work schedules are at odds with powerful sleep-regulating cues like sunlight, they often bee uncontrollably drowsy during work, and they may suffer insomnia or other problems when they try to sleep. Shift workers he an increased risk of heart problems, digestive disturbances, and emotional and mental problems, all of which may be related to their sleeping problems. The number and severity of workplace accidents also tend to increase during the night shift. Major industrial accidents attributed partly to errors made by fatigued night-shift workers include the Exxon Valdez oil spill and the Three Mile Island and Chernobyl nuclear power plant accidents. One study also found that medical interns working on the night shift are twice as likely as others to misinterpret hospital test records, which could endanger their patients. It may be possible to reduce shift-related fatigue by using bright lig hts in the workplace, minimizing shift changes, and taking scheduled naps.Many people with total blindness experience life-long sleeping problems because their retinas are unable to detect light. These people he a kind of permanent jet lag and periodic insomnia because their circadian rhythms follow their innate cycle rather than a 24-hour one. Daily supplements of melatonin may improve night-time sleep for such patients. However, since the high doses of melatonin found in most supplements can build up in the body, long-term use of this substance may create new problems. Because the potential side effects of melatonin supplements are still largely unknown, most experts discourage melatonin use by the general public.