Exercising during the day can keep you awake at night instead of putting you to sleep，according to new research from the United States．It was believed a good workout helps to send you off by making you more tired-but it now appears that the opposite is true．
A study of fourteen participants who wore a piece of equipment monitoring their movements for 23 days found the more active they were the less they napped．Surprisingly，total sleep time increased by an average of 42 minutes a night after days with low activity．The findings suggest exercise and sleep have a more complicated relationship than many people realize．
Heart specialist Dr Am Eliasson，who led the research，said the results were the opposite of expectations．Quality of sleep did not improve after days of increased exercise．The data collected included total sleep time，the exercise energy that has been used，the height and weight of the participants．
Dr Eliasson speculates the findings may be explained by personality types．Individuals who are ambitious and active during the day may also be more "vigilant （警惕的）" at night and therefore sleep less．Meanwhile，less ambitious people who are less active may have no difficulties falling or staying asleep．
Another explanation may be that job and life stresses lead to busier days，more exercise and more calories burned but may interfere with （干擾） sleep．
It was believed that exercise improves sleep because it produces a rise in body temperature，which is then followed by a drop a few hours later．It is the drop in temperature that apparently makes you sleepy．So the traditional advice has been to exercise at least three to four hours before your bedtime to give your body time to cool down and avoid having a hard time falling asleep．But now scientists may have to think again．
（1）From the text we can learn that all the participants CC．
A．had sleep problems before the study
B．improved their quality of sleep after the study
C．had all their activities recorded all the time
D．put on weight more or less soon afterwards
（2）The research mentioned in the text was designed to DD．
A．call on more people to exercise before sleep
B．expect people to reduce their exercising time
C．change people's traditional idea about exercise and fitness
D．find out the relationship between exercise and sleep
（3）Who has the best sleep according to Dr Eliasson？ CC
A．A government official who is busy．
B．A senior who wants to go to college．
C．A librarian who has an easy and satisfying job．
D．A clerk in the bank with lots of customers．
（4）What may scientists have to think about again？ BB
A．The truth of the new findings by Dr Am Eliasson．
B．The traditional suggestion about the time for exercise．
C．The exact amount of time for the drop in temperature．
D．The necessity of the study on exercise and sleep．
（5）It can be inferred from the text that BB．
A．the latest finding is suspected by some scientists
B．people with low activity may have a longer sleep time
C．more people will start to take exercise in the evening
D．one can improve his quality of sleep by exercising more
【考點】社會．
【答案】C；D；C；B；B
【解答】
【點評】
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發(fā)布：2024/4/20 14:35:0組卷：5引用：1難度：0.4
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1．Hi Judy!
You often complain to me that you always buy goods unreasonably on sale promotion（促銷）and feel it shameful after going back to your school dormitory with new things not needed，considering all the money you spend is your parents' income．
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Find out the conditions where you are likely to buy things blindly．When seeing a dress advertised at 20% off，do not concentrate on the discount，but warn yourself against falling into the trap of "saving money''．
Besides，do not forget the long-term effects of your choice when meeting a sales promotion．Short-term benefits，like excited feeling just after buying items encourage impulsive buying．But the long-term costs such as waste of money and the sense of shame really annoy you．When seeing the advertisements，remember what you really want to buy originally and warn yourself of that terrible feeling．Only in this way can you save money for really needed things．
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（1）Judy felt it a shame to．
A．complain to others about the poverty of her family
B．waste her parents' money on unneeded things
C．buy cheap things at lower prices or with less money
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A．It is designed by shops to draw customers' attention．
B．It can be brought under control with the help of stores．
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（3）In face of sales promotion Judy is advised to．
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B．It is located in London.
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3．Ever since I graduated from high school I've worked in the factories surrounding my hometown every summer.However，making the transformation between school and full-time blue-collar work during the break never gets any easier.For a student like me who considers any class before noon to be unacceptable，getting to a factory by 6 o'clock each morning is suffering.My friends never seem to understand why I'm so relieved to be back at school or that my summer vacation has been anything but a vacation.
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