People who averaged fewer than seven hours of sleep per nigh
来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/10/01 05:33:04
People who averaged fewer than seven hours of sleep per night in the weeks before being exposed to the cold virus were nearly three times as likely to get sick as those who averaged eight hours or more, a new study found. Researchers used frequent telephone interviews to track the sleep habits of more than 150 men and women aged 21 to 55 over the last few weeks. Then they exposed the subjects to the virus, quarantined (检疫隔离) them for five days and kept track of who got sick. Besides sleeping more, sleeping better also seemed to help the body fight illness: Patients who fared better on a measure known as “sleep efficiency”—the percentage of time in bed that you’re actually sleeping—were also less likely to get sick. The results held true even after researchers adjusted for elements such as body-mass index, age, sex, smoking and pre-existing antibodies (抗体) to the virus. The researchers aren’t exactly sure why sleeping better makes you less likely to develop a cold. But they do try to give an answer: “Sleep disturbance influences the regulation of symptom mediators (调节因子) that are released in response to infection.” In plain English, maybe tossing and turning when you’re infected with the cold virus contributes to the symptoms that define a cold. The researchers were based at Carnegie Mellon, the University of Pittsburgh and the University of Virginia, and the study was funded by the National Institutes of Health. 小题1: According to the passage, what does the underlined word “subjects” mean in paragraph 2?
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小题1:B
小题2:D
小题3:C
People who sleep ___ six hours a day.是填fewer than还是less than
Most people need seven to ten hours of sleep _____
分析下句型individuals who average less than six hours of sleep ha
there are over 60% of people who sleep more than 8 hour each
less than two hours 还是fewer than two hours
you should have at _ seven hours of sleep a day.
英语翻译A small group of fewer than a hundred people caused trou
英语翻译昨晚我睡觉不到七个小时.I ____ for _____ _____ seven hours last nigh
I think it's important for us ____(sleep) eight hours a nigh
英语翻译I believe that it's _____ ______ sleep 8 hours each nigh
64406:people who do not get enough sleep are more than twice
Per cent of the people