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 (檢疫隔離) 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 (抗體) 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 (調(diào)節(jié)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.
小題1: According to the passage, what does the underlined word “subjects” mean in paragraph 2?
A．a(chǎn)reas of knowledge in a school
B．people being studied in an experiment
C．research topics
D．a(chǎn)nimals being tested
小題2:It is shown in the passage that _______.
A．the researchers obtain information about the sleep habits by frequent interviews
B．the researchers do their research in the National Institutes of Health
C．people hope to avoid being infected with a cold by sleeping as much as possible
D．sleeping more and better helps regulate the symptom mediators
小題3:What’s the best title of the passage?
A．The Relationship Between Virus and Cold
B．How to Sleep Well
C．Good Sleep Helps Fight a Cold
D．The More the Sleep, the Better Your Body

小題1:B
小題2:D
小題3:C

試題分析： 本文主要講述的是有充足的睡眠以及高質(zhì)量的睡眠對我們的健康有很大的好處，尤其可以增強我們的抵抗力，不容易感冒。
小題1:B推理題。根據(jù)本段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,可知這里的subjects就是指接受研究的150多個男性和女性的研究對象，讓他們接觸到細菌。故B正確。
小題2:D細節(jié)題。根據(jù)文章3,4段Besides sleeping more, sleeping better also seemed to help the body fight illness和The results held true even after researchers adjusted for elements such as body-mass index, age, sex, smoking and pre-existing antibodies (抗體) to the virus.可知有充足的睡眠時間以及很好的睡眠質(zhì)量會調(diào)節(jié)我們的身體，讓我們更能夠抵抗感冒。故D正確。
小題3:C主旨大意題。根據(jù)文章第一段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可知睡眠時間較長的人身體更好，更不容易患感冒。故C正確。
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