Yawning sends out certain messages---either “Oh, this movie is boring”or I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is so overheated?
A new study, led by a research team of Princeton University, has indicated that yawning could be the brain’s natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily.com.
The research team did an experiment on 160 people , 80 in summer and 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.
When people yawn, their jaw is also stretched, which increases blood flow and may also help cool the brain.
The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawn. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.
However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.
According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.
小題1:The purpose of the experiment is ________.
A.to prove people yawn in winter and in summer equally.
B.to indicate brain can regulate temperature naturally
C.to find the frequency of people’s yawning
D.to show the real reason why people yawn
小題2:The information we get from Paragraph 5 and 6 is that_______
A.longer outdoor summertime results in more yawns.
B.yawning frequency changes with outdoor time
C.yawning frequency increases with outdoor time
D.longer outdoor wintertime leads to fewer yawns
小題3:According to the text, people yawn more often________.
A.when the air temperature is lower outside the body
B.when the hot air breathed in makes the brain hotter
C.when the air temperature is higher than the body
D.when the air temperature is equal to the body.
小題4:What could be the best title for the text?
A.Yawning is a Sign of Brain Disease
B.Yawning Carries Some Information
C.Yawning Benefits Your Body
D.Yawning Cools Your Brain

小題1:C
小題2:B
小題3:A
小題4:D

試題分析:文章介紹了一項研究結果,人們多長時間打一次哈欠,研究表明,當外面的溫度比身體的溫度低的時候,人們就會打哈欠。打哈欠可以讓人的大腦冷靜下來。
小題1:細節(jié)題:從第三段的句子:The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. 可知這個研究的目的是看人們多長時間打一次哈欠,選C
小題2:細節(jié)題:從第五段的句子:The study showed that the amount someone yawned could be related to the amount of time they spent outside.可知人們打哈欠的時間和在戶外是時間有關,選 B
小題3:細節(jié)題:從第二段的句子:People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com.可知當外面的溫度比身體的溫度低的時候,人們就會打哈欠。選A
小題4:標題確定題:從第一段的句子:But did you know that a yawn can also help your brain to cool down when it is overheated?可知打哈欠可以讓人的大腦冷靜下來。選D
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科目:高中英語 來源:不詳 題型:閱讀理解

One day, when I was a freshman in high school, I saw Kyle from my class walking home from school. It looked like he was carrying all of his books. I thought to myself, "Why would anyone bring home all his books on a Friday? He must really be a nerd (a foolish person)." I had quite a weekend planned, so I shrugged my shoulders and went on.
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科目:高中英語 來源:不詳 題型:閱讀理解


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Rao
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A.a(chǎn)bsorbedB.willingC.carelessD.unhappy
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小題4:
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A.differentB.missingC.shortD.broken
小題2:
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A.tileB.brickC.ceilingD.house
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A.look onB.focus onC.count onD.rely on
小題7:
A.peacefulB.difficultC.easyD.ordinary
小題8:
A.certainlyB.merelyC.hardlyD.generally
小題9:
A.secretB.factorC.ruleD.key
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A.wealthyB.gratefulC.proudD.generous
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A.upsetB.quarrelC.complainD.depress
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A.a(chǎn)dmittingB.a(chǎn)ssumingC.provingD.realizing
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A.sourcesB.resultsC.a(chǎn)nswersD.goals
小題14:
A.a(chǎn)mongB.fromC.throughD.for
小題15:
A.probableB.possibleC.likelyD.capable
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A.valueB.destinationC.survivalD.existence
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A.needB.lackC.demandD.expect
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A.involveB.includeC.a(chǎn)bsorbD.mean
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Winners Club
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Excellent interest rates!
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Convenient
Teenagers are busy—we get that. You may never need to come to a bank at all. With the Winners Club you can choose to use handy tellers and to bank from home using the phone and the Internet. You can have money directly deposited into your Winners Club account. This could be your pocket money or your pay from your part-time job!
Mega magazine included
Along with your regular report, you will receive a FREE magazine full of good ideas to make even more of your money. There are also fantastic offers and competitions only for Winners Club members.
The Winners Club is a great choice for teenagers. And it is so easy to join. Simply fill in an application form. You will have to get permission from your parent or guardian (so we can organize that cool key-card) but it is easy. We can’t wait to hear from you. It’s the best way to choose to be a winner!
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C.Services are convenient for its members.
D.Fees are necessary for the account keeping.
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A.To set up a club.B.To provide part-time jobs.
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