大学英语六级分类模拟题447及答案解析.doc
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1、大学英语六级分类模拟题 447及答案解析(总分:343.50,做题时间:90 分钟)一、Part Reading Compr(总题数:0,分数:0.00)It“s Time to Pay Attention to Sleep, the New Health FrontierA. Your doctor could soon be prescribing crucial sleep as treatment for everything from obesity to mental health as experts say carving out time for sleep is just
2、as important as diet and exercise. B. After being diagnosed with brain and lung cancer in 2011, Lynn Mitchell, 68, was averaging about an hour of solid sleep a night. Stressed about her treatments, she was paying for it in hours of lost sleep. The brain cancer was already affecting her mobilityMitch
3、ell was often dizzy and would lose her balancebut the lack of sleep was making things worse. Even walking became increasingly difficult. Exhausted in the mornings, she was practically incoherent. When her doctors recommended she see a sleep therapist, Mitchell was relieved at how benign it sounded i
4、n comparison to the chemotherapy (化疗) she had undergone, which had side effects like nausea and fatigue. C. For about nine weeks, Mitchell worked with the sleep therapist to adjust her sleep habits. She got under the covers only when she was extremely tired. She quit watching TV in bed. She stopped
5、drinking caffeinated coffee in the evening. She also learned breathing exercises to relax and help her drift off. It was all quite simple and common sense, and, most importantly, noninvasive and didn“t require popping any pills. D. “It“s common knowledge that sleep is needed for day-to-day function,
6、“ says Dr. David Rapoport, director of the Sleep Medicine Program at NYU School of Medicine. “What isn“t common knowledge is that it really mattersit“s not just cosmetic.“ Rapoport has long seen people seek sleep therapy because they“re chronically tired or suffering from insomnia (失眠),but an increa
7、sing number of patients are being referred to his center for common diseases, disorders, and mental health. E. Researchers have known for some time that sleep is critical for weight maintenance and hormone balance. And too little sleep is linked to everything from diabetes to heart disease to depres
8、sion. Recently, the research on sleep has been overwhelming, with mounting evidence that it plays a role in nearly every aspect of health. Beyond chronic illnesses, a child“s behavioral problems at school could be rooted in mild sleep apnea (睡眠呼吸中止症). And studies have shown children with ADHD (注意力缺损
9、多动障碍) are more likely to get insufficient sleep. A recent study published in the journal SLEEP found a link between older men with poor sleep quality and cognitive decline. Another study out this week shows sleep is essential in early childhood for development, learning, and the formation and retent
10、ion of memories. Dr. Allan Rechtschaffen, a pioneer of sleep research at the University of Chicago, once said, “If sleep does not serve an absolutely vital function, then it is the biggest mistake the evolutionary process ever made.“ F. But to many of us, sleep is easily sacrificed, especially since
11、 lack of it isn“t seen as life threatening. Over time, sleep deprivation can have serious consequences, but we mostly sacrifice a night of sleep here and there, and always say that we“ll “catch up“. Luckily, it is possible to make up for sleep debt (though it can take a very long time), but most Ame
12、ricans are still chronically sleep deprived. G. While diet and exercise have been a part of public health messaging for decades, doctors and health advocates are now beginning to argue that getting quality sleep may be just as important for overall health. “Sleep is probably easier to change than di
13、et or exercise,“ says Dr. Michael Grandner, a sleep researcher at the University of Pennsylvania. “It may also give you more of an immediate reward if it helps you get through your day.“ And while there“s more evidence linking diet and exercise as influential health factors, sleep is probably more i
14、mportant in terms of brain and hormonal function, Grandner says. “Among a small group of sleep researchers, if it is always been said that eating, exercise, and sleep are the three pillars of health,“ says Dr. Rapoport. H. In our increasingly professional and digital lives, where there are now more
15、things than ever competing for the horns in our day, carving out time for sleep is not only increasingly difficult, but also more necessary. Using technology before bed stimulates us and interferes with our sleep, yet 95% of Americans use some type of electronics like a computer, TV, or cell phone a
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