2. 外语
  3. While it’s easy enough to brush off a few sleepless nights with a pot of coffee and the occasional desk nap, you may be doing mo

While it’s easy enough to brush off a few sleepless nights with a pot of coffee and the occasional desk nap, you may be doing mo

admin2014-05-30  21
问题     While it’s easy enough to brush off a few sleepless nights with a pot of coffee and the occasional desk nap, you may be doing more harm than you realise. According to a new study from Surrey University, having less than six hours of sleep per night can actually shut down genes that play a key role in the body’s【C1】______of self-repair.
    We rely on our genes to constantly produce the proteins needed to【C2】______the wear on our bodies’ tissue that we suffer throughout the day. But when scientists divided 26volunteers into two groups—one of which slept for less than 6 hours per night for an entire week and the other for 10 hours per night—some of the sleep-deprived group’s genes actually stopped working.
    The functions of 711 genes in total were altered in some way,【C3】______ones involved in metabolism(新陈代谢), inflammation(炎症), immunity and stress. There is some good news though: a week of normal sleep was enough to【C4】______the malfunctioning genes back to peak condition, but should the【C5】______sleep patterns continue, health problems that aren’t quite so easily reversible, like obesity(肥胖)and heart disease, have a【C6】______chance of cropping up. And this study only scratches the【C7】______, according to Professor Colin Smith, one of the scientists【C8】______in the study: This is only a week of sleep【C9】______and it is only five and a half or six hours a night. Many people have that amount of sleep for weeks, months and maybe even years so we have no idea how much【C10】______it might be.
A)experiment I)slight
B)high J)specifically
C)involved K)substitute
D)namely L)surface
E)process M)unhealthy
F)restore N)unstable
G)restriction O)worse
H)reverse
【C3】
选项
答案J
解析 空格前是完整的句子，因此空格所填词及其后的部分在句中作状语起补充说明的作用。involved in…是非谓语动词结构作定语修饰ones(即genes)，具体说明了是哪些基因。空格前的句意为“711种基因的功能或多或少都发生了变化”，后面进一步说明了是哪一部分，由此可知应是对前面内容的具体解释，故specifically“更具体地”符合文意。namely意为“也就是，即”，是指前面所有的内容，可此处只描述了部分基因，与文意不符，故排除。
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大学英语四级

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