Sleeping and learning go hand in hand，which studies have shown for years.Even a brief sleep can improve your memory and sharpen your thinking.But according to a new study the relationship goes deeper than that—it turns out that a sleeping brain can be taught a thing or two，which is contrary to most scientists' thought.
"The brain is not passive while you are sleeping；you can do quite a lot of things while you are asleep，"said Anat Arzi，who researched the sense of smell and also worked on the new study.
Arzi and her coworkers didn't try to teach the sleeping volunteers any complex information，like new
words or facts.Instead，the scientists taught sleeping volunteers to match smells and sounds.
When we smell something nice，we automatically take deep breaths.When we smell something bad，we automatically take short breaths.Arzi and her coworkers based their experiment on these reactions.It is common sense that our senses don't turn off while we are sleeping.
Once the volunteers fell asleep in the lab，the scientists went to work.They gave the volunteers a whiff
（一陣氣味） of something pleasant，like shampoo，and at the same time played a particular musical note.
The volunteers didn't wake up，but they did hear—and sniff（用鼻子聞） deeply.Then the scientists gave
the volunteers a whiff of something repulsive，like bad fish，and played a different musical note.Again，the volunteers heard and smelled—a short snort（鼻息聲） this time—but didn't wake up.
After just four repetitions，volunteers made a connection between the musical notes and their paired
smells.When the scientists played the musical tone that went with good smells，the sleepers breathed in the air deeply —even though there was no good smell to sniff.And when the scientists played the musical tone that went with unpleasant smells，the sleepers breathed in the air briefly—despite there being no bad smell.
（1）What did most scientists use to think？ DD
A．Sleep could not improve one's memory.
B．Sleep could not make one think quickly.
C．Sleeping and learning were not closely connected.
D．A sleeping brain couldn't learn anything new.
（2）On what knowledge did the researchers base their experiment？ AA
A．That our senses don't stop working while we sleep.
B．That people are more influenced by smell than by sound.
C．That people may be woken up if they smell something bad.
D．That our breathing rate is controlled by the brain.
（3）What does the underlined word "repulsive" in paragraph 5 probably mean？ BB
A．Strong.
B．Unpleasant.
C．Unfamiliar.
D．Sweet.
（4）What does the passage mainly talk about？ AA
A．Learning in sleep.
B．Benefits of a good sleep.
C．Smells influence sleep.
D．Music benefits sleep.
【考點(diǎn)】說(shuō)明文；學(xué)習(xí)．
【答案】D；A；B；A
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：1引用：1難度：0.5
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