1．America is growing older．For fifty years，only 4 out of every 100 people in the United States were 65 or older．Today，10 out of every 100 Americans are over 65．The aging of the populations will affect aspects of society-education，medicine，housing，and business．The graying of American has made us a very different society-one in which people have quite a different perception （認識） of what kind of behavior is proper at various ages．
An adult's age no longer tells you anything about that person's economic or marital status （婚姻狀況），lifestyle，or health．There's no longer a particular year，or even a particular decade，in which one gets married or goes to work or goes to school or has children．The social clock that kept us on time and told us when to get married，to school，get a job，or retire isn't as strong as it used to be．It doesn't surprise us to hear of a 29-year-old university president or a 35-year-old grandmother or a 70-year-old man who has become a father for the first time．Public attitudes are changing．
Many people say，"I am much younger than my mother or my father was at my age．"No one says，"Act your age，"anymore．We've stopped looking with disagreement at older people who act in youthful ways．
13．The best explanation of the expression"acting your age"isB．
A．a(chǎn)cting a part of a play when you are old enough
B．doing the things that people expect you of your age to do
C．playing an important role in the society when you are grown up
D．working hard and supporting the family when you are an adult
14．According to the passage，the population in America is getting older，which will affect all of the following exceptB？
A．ho using and business  
B．birth rate     
C．medicine            
D．education
15．Choose the best one to complete the sentence"An adult's age used to tell people something about what person'sD．"
A．schooling and interest  
B．family and housing
C．a(chǎn)bility to so something  
D．health，lifestyle，economic or marital status．

分析 本文主要講的是美國的老齡化問題．美國正在變老．現(xiàn)在，每100個美國人中有十個人的年齡在65歲以上．人口老齡化將會在教育、醫(yī)學和經(jīng)濟等許多方面給美國帶來影響．人們對某一年齡段應(yīng)該做什么事情的看法也發(fā)生了改變．

解答 13．B 細節(jié)理解題．根據(jù)文章內(nèi)容"The social clock that kept us on time and told us when to get married，to school，get a job，or retire isn't as strong as it used to be"社會時鐘，使我們及時和告訴我們什么時候結(jié)婚，上學，找到工作，或退休是不是那么強，因為它曾經(jīng)是．故選B．
14．B 細節(jié)理解題．根據(jù)第一段"The aging of the populations will affect aspects of society-education，medicine，housing，and business．"人口老齡化將影響社會教育、醫(yī)藥、住房和商業(yè)等各個方面，可知本題選B．
15．D 細節(jié)理解題．根據(jù)第二段"細節(jié)理解題．"An adult's age no longer tells you anything about that person's economic or marital status （婚姻狀況），lifestyle，or health．"一個成年人的年齡不再告訴你關(guān)于那個人的任何經(jīng)濟或婚姻狀況（婚姻狀況）、生活方式、健康．可知本題選D．

點評 本文是社會文化類閱讀理解．做這類題材閱讀理解時要求考生對文章通讀一遍，做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進行仔細分析，結(jié)合選項選出正確答案．推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據(jù)

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