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9.Loud noises in everyday activities can damage the inner ear.This type of hearing loss can't be healed.But it can be prevented.Block the noise from entering your ears; walk away from it; and turn it down.Those are your first steps in staying safe.
On average,15% of all school-age children live with some hearing loss.And it's a growing problem.A study published in the Journal of the American Medical Association in 2012found a 31% rise from 2003to 2010in hearing loss among kids ages 12to 19.
A 2013study by Harvard Medical School did not find the same significant increase.But the Harvard study found that teenage girls have more hearing problems than teenage boys.The study did not track kids into adulthood.
"Imagine a handful of pipe cleaners (煙斗通條).They represent the hair cells (毛細胞) in your ear,"Andrea Boidman of Research Foundation said."Being exposed to a really loud noise is like shaking the pipe cleaners really fast.When you're done,the pipe cleaners are all bent.You can never really make them straight again,"she says."That's like what happens with your hair cells.Once they are damaged,they never go back to being perfect again,and eventually the damage will start to affect your hearing."
Most people don't know that listening to headphones at full volume puts your ears at risk,"If your iPod is on the maximum volume(最大音量),it's too loud,"says Boidman."If you listen to it at that level every day,it will cause hearing loss."Sometimes,staying safe and sound is as simple as turning it down.
21We can conclude from the study by Harvard Medical School thatC.
A.the increase of hearing loss among kids reached 31%
B.more teenage boys suffer hearing loss than teenage girls
C.teenage girls experience more hearing loss than teenage boys
D.the number of adults with hearing problems increased greatly
22.Why does the author compare the pipe cleaners to the hair cells?D
A.Both can be strongly shaken    
B.Neither could be seen clearly
C.Both should be protected carefully   
D.Neither can recover fully if damaged
23.According to the text,when listening to an iPod one shouldB.
A.avoid using headphones     
B.set the proper volume level
C.take a walk while listening     
D.check the safety rules for the headphones
24.The text is mainly aboutD.
A.teenagers'bad habit      
B.a research on teenage safety
C.listening ability and hearing loss   
D.everyday activities and hearing loss.

分析 本文主要講述青少年的日;顒蛹奥犃Φ慕档停

解答 21-24 CDBD
21   C  細節(jié)題. 根據(jù)文章第 二段But the Harvard study found that teenage girls have more hearing problems than teenage boys. 可知哈佛大學研究發(fā)現(xiàn)在聽力問題方面女生比男生嚴重,故選C.
22  D  細節(jié)題. 根據(jù)文章倒數(shù)第 二段 Once they are damaged,they never go back to being perfect again,可知一旦他們被毀壞,他們將不能恢復到完美的境地,故選D.
23  B  細節(jié)題. 根據(jù)文章最后一段 Sometimes,staying safe and sound is as simple as turning it down.可知聽iPod時應該將聲音調低,有利于你的聽力,故選B.
24  D  主旨大意題.  通讀全文可知本文主要講述青少年的日常活動及聽力的降低.故選D.

點評 做閱讀理解時要快速的瀏覽全文,把握文章主旨大意,帶著問題回到原文,尋找細節(jié)或概括相應的答案,最后要理清作者寫作思路.

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C.twins raised in two separate families are different in personality
D.upbringing has a less significant effect on children's personality development
34.According to Paragraph 3,we know thatC.
A.it is easier for children to gain a language at home
B.it is harder to follow the effects of parental upbringing
C.immigrant children avoid speaking the same way as their parents at school
D.it is proved that peers have a greater effect on children's qualities
35.What does the author mean by saying parents are not completely off the look at the end of the passage?D
A.Parents should control the situation.
B.Parents should give their way to children.
C.Parents should spend more time on children.
D.Parents should take on their responsibility.

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