18.Are you having difficulty falling asleep?Try drinking a glass of warm milk.If that doesn't work,listen to soft,beautiful music.Still no luck?Try thinking about sheep jumping over a fence.If you are still awake,take a sleeping pill.But people who take pills often become dependent on the drugs.So you lie awake knowing that the new workday will soon arrive.If you have been in such condition for at least one month,you may have primary insomnia(失眠癥).
A new study has found that you might fall asleep more quickly and stay asleep longer if you try"cerebral hypothermia".It is not a complex medical process.It just means cooling down your brain.Eric Nofzinger and Daniel Buysse from the University of Pittsburgh Medical School led the study.They examined twelve people who had sleeping problems.Twelve others had no sleep problems.Each of them wore a soft plastic cap on their head at bedtime.
The caps had tubes inside filled with water.The researchers moved the water through the tubes and then changed the temperature of the water.Other studies showed that people who had sleeping problems often had more chemical reactions in the front of their brain.The researchers thought cooling down the brain might help.
On the first two nights of testing,the patients wore caps with no water.On the next two nights,the caps were worn,but the water was not cooled.Then the researchers cooled the water a little for another two nights.On the final two nights of the study,the temperature of the water was made much cooler.
The researchers found that the water caps didn't help the patients until the temperature was about 14℃.Most of the patients fell asleep faster and slept better when the coolest water was moving around their heads.
Dr Nofzinger and Dr Buysse noted that this was only the beginning of the brain temperature study.But they believed they had discovered something important that needed more research.

36.The first paragraph is written toB.
A.explain how serious insomnia is
B.bring forward the topic of the passage
C.tell us the causes of sleeping problems
D.tell us the danger of having sleeping problems
37.From the passage we know that"cerebral hypothermia"is actuallyC.
A.a(chǎn) complex medical process
B.a(chǎn) psychological treatment
C.a(chǎn) simple physical treatment
D.a(chǎn) difficult scientific theory
38.In the study,researchers helped people fall asleep faster throughD.
A.increasing chemical reactions in the front of their brain
B.making them feel safe with a cap on their head
C.a(chǎn)sking them to drink water to cool down
D.lowering the temperature of their brain
39.Dr Nofzinger and Dr Buysse seemed to believe thatB.
A.their research wouldn't help people greatly
B.more studies would be needed for their research
C.cooling down people's brain might be harmful
D.the results of their study would be made use of soon.

分析 本文屬于說(shuō)明文閱讀,作者通過(guò)這篇文章主要向我們描述了最近的一項(xiàng)研究發(fā)現(xiàn),降低大腦的溫度有助于失眠者睡一個(gè)好覺(jué).

解答 36.B.推理判斷題.根據(jù)第一段的句子"If you have been in such condition for at least one month,you may have primary insomnia(失眠癥)."可知這一段主要是為了提出文章的話題.故選B.
37.C.細(xì)節(jié)理解題.根據(jù)第二段的句子"It is not a complex medical process.It just means cooling down your brain."可知"cerebral hypothermia"實(shí)際上是簡(jiǎn)單的物理療法.故選C.
38.D.細(xì)節(jié)理解題.根據(jù)第三段的句子"The researchers thought cooling down the brain might help."可知研究人員通過(guò)冷卻人們的大腦讓他們更快地入睡.故選D.
39.B.推理判斷題.根據(jù)最后一段的表述Dr Nofzinger and Dr Buysse noted that this was only the beginning of the brain temperature study.But they believed they had discovered something important that needed more research可知,這兩位科學(xué)家認(rèn)為該研究剛開(kāi)始,今后還需要更多的研究;故選B.

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.

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