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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 changes may be required in Britain s drink drive legislation.

Dr James Horne, director of the Sleep Research Laboratory at Loughborough University, is investigating pose _ 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 of the same primeval 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 studies Dr Horne has been investigating the role of alcohol."The theory is that if you are more 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 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 lunch _ time 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 Horne recommends mild exercise, a splash of cold air or cold water on the face, or a cup of coffee. Otherwise, take a cat nap. But this should be less than 15 minutes,"otherwise, sleep really sets in and one can wake up feeling very groggy and far sleepier than to ??? be in with."

1. It is implied that British people

[A]like to take a short nap after lunch.

[B]don t take a short nap after lunch.

[C]don t feel sleepy after lunch.

[D]like to sleep twice a day.

2. take a rest in the hot afternoon sun.

[A]All animals in the bush

[B]The remnant of the same primeval programming

[C]The same primeval programming

[D]All animals in the world

3. Most drivers ought not to drink at all at lunch time because

[A]alcohol will be less potent after lunch.

[B]a pint of beer at lunchtime is equivalent to a quart in the evening, it cause afternoon sleepiness.

[C]people are more alert at lunchtime.

[D]it is not legal to drink at lunchtime.

4. According to the passage, if you sleep more than 15 minutes after lunch

[A]you will be refreshed.

[B]you will be waken up.

[C]you will feel far sleepier.

[D]you will take a cat nap.

5. It can be inferred that

[A] People are not allowed to drive after they drink one quarter in the evening.

[B] People are still allowed to drive after they drink one quarter in the evening.

[C] People are still allowed to drive after they drink out pint at lunch _ time.

[D] None.

参考答案：

1.[B] 含蓄题。此题答案由第二段第二句推知"We humans are designed to sleep twice a day...but we tend to repress that"。

2.[A]具体题。此题答案在第三段。

3.[B] 具体题。此题答案在第七、八段。

4.[C] 具体题。答案在第九段第三句。

5.[A] 推理题。此题答案根据第七段推知。由于alcohol可引起afternoon sleepiness, C选项不对;根据one pint at lunch _ time与a quarter in the evening造成sleepiness效果等同，因此B选择不对，A选项为答案。

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