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Studies of the effect that makes many of us slumber or feel sleepy during the Queen’s speech on Christmas Day have revealed that
Studies of the effect that makes many of us slumber or feel sleepy during the Queen’s speech on Christmas Day have revealed that
admin
2012-06-20
32
问题
Studies of the effect that makes many of us slumber or feel sleepy during the Queen’s speech on Christmas Day have revealed that changes may be required in Britain’s drink drive legislation.
Dr. James Horne, director of the Sleep Research Laboratory at Loughborough University, is investigating post-lunch sleepiness. "We humans are designed to sleep twice a day, once at night and a short nap after lunch, but in this part of the world we tend to repress that."
It is a remnant (剩余的) of the same primeval (原始的) programming that makes all animals in the bush rest in the hot afternoon sun to conserve energy.
"Hot environments make it worse and many cultures living near the equator," says Dr. Horne, "have conceded to the inevitable, where the afternoon siesta is the way of life."
In this study Dr. Home has been investigating the role of alcohol. "The theory is that if you are more often sleepy after lunch then it figures that alcohol will be more potent after lunch. One would figure then that a pint of beer at lunchtime has more effect than in the evening, when people are more alert. Indeed, we find that it has about twice the effect."
This has more sinister (险恶的) implications. "If people take alcohol up to the legal driving limit, their performance is seriously impaired after lunch," he said.
It seems that alcohol interacts with the circadian rhythm of sleep to cause afternoon sleepiness, so that one pint at lunchtime is equivalent, in effect, to a quart in the evening.
"For this reason, most drivers ought not to drink at all at lunchtime and the legal blood alcohol limit is no guide to ’safe’ driving here," said Dr. Horne.
For those who wish to enjoy the Queen’s speech, Dr. Home recommends mild exercise, a small amount of cold air or cold water on the face, or a cup of coffee. Otherwise, take a catnap. But this should be less than 15 minutes, otherwise, sleep really sets in and one can wake up feeling very tired and far sleepier than to begin with.
Why shouldn’t most drivers drink at lunchtime?
选项
A、They are more alert at lunchtime.
B、Alcohol will be less potent after lunch.
C、Drinking at lunchtime causes them to sleep in the afternoon.
D、It is illegal to drink at lunchtime.
答案
C
解析
倒数第二段提到For this reason,most drivers ought not to drink at all at lunchtime,this reason指代上段提到的…alcohol interacts with the circadian rhythm of sleep to cause afternoon sleepiness(酒精与睡眠的昼夜节律相互作用,导致下午的瞌睡),故答案为[C]。[B]与第五段第二句提到的more potent矛盾。
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0
大学英语四级
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