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  3. Did you sleep well last night? Or did you wake up feeling fatigued and sluggish — perhaps even wondering if you really slept at

Did you sleep well last night? Or did you wake up feeling fatigued and sluggish — perhaps even wondering if you really slept at

admin2010-11-29  39
问题     Did you sleep well last night? Or did you wake up feeling fatigued and sluggish — perhaps even wondering if you really slept at all? Getting a good night’s sleep requires more than crawling into bed and closing your eyes.Understanding your sleep behavior and preparing for a sound slumber can help make sure every night is a good night for sleeping.
    "Sleep is a behavior and, like all behaviors, it varies greatly among people," explains Dr. Carol Landis, sleep researcher and associate professor in biobehavioral nursing and health systems at the University of Washington School of Nursing. "The greatest differences occur in the timing of sleep and the amount of sleep — the factors which are most important in determining whether you will wake up feeling rested."
    Research has found that people sleep better at different times during their daily cycle. For example, some people function better if they go to sleep early and rise early, while others feel more rested if they stay up late and sleep in. "Many people don’t pay attention to the timing of their sleep," Landis notes. "Yet delaying or altering the time you go to sleep can have a major impact on how you feel when you wake up."
    The amount of sleep the average adult needs each night also varies. Some people may be fine with six hours sleep, while others need up to nine hours per night. Landis points out that those who follow a regular sleep schedule are more apt to function better on fewer hours, but she adds that most adults need at least six hours of sleep each night.
    "A person’s sleeping patterns aren’t set in concrete," Landis stresses. Gradually altering the timing of sleep can help change sleep patterns. An "evening person" who needs to get to work early in the morning can try upping the time they go to bed by 30 minutes every few days. Within a few weeks, this slow adjustment will help "reset" the internal body clock.
    In addition to maintaining a regular daily sleep schedule, Landis offers the following tips on practicing good sleep hygiene:
    1) Avoid stimulants including cigarettes, caffeinated beverages and food such as chocolate in the late afternoon and evening.
    2) Finish exercising at least two hours before going to sleep. Exercise increases body temperatures and has an arousing effect, making it more difficult to easily fall asleep.
    3) Don’t sleep in a warm environment. A drop in a person’s body temperature is important at the onset of deep sleep. People who sleep in a well-heated room or use an electric blanket may not sleep as soundly.
According to Dr. Carol Landis,______.
选项 A、people should sleep early and rise up early
B、an adult needs at least nine hours daily for sleep
C、sleeping patterns are changeable
D、sleeping behaviors of human beings are pretty much alike
答案C
解析 细节题。注意题干中出现的人名“Carol Landis”不能算作定位关键词，因为全篇文章，需要对每个选项进行比较。选项A与原文第三段内容有出入，只有部分人是早睡早起型。选项B与第四段第一、二句不符， “The amount of sleep the average adult needs each night also varies．Some people may be fine with six hours sleep，while others need up to nine hours per night．”不是所有的成年人每天都需要至少九小时睡眠。选项C符合第五段中提到的“aren’t set in concrete”的说法，睡眠形式是可变的。选项D与第二段第一句之意恰好相反“Sleep is a behavior and，like all behaviors，it varies greatly among people”。
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