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    Many of us believe that a person’s mind becomes less active as he grows older．But this is not true，according to Dr．Lissy F．Jarvik，professor of psychiatry(精神病学)at the University of California，Los Angeles，and a board member of the New Center for Aging at the Veterans Hospital．She has studied the mental functioning of aging persons for several years.For example，one of her studies concerns 136 pairs of twins, who were first examined when they were already 60 years old．As Dr．Jarvik continued the study of the twins into their 70s and 80s，their minds did not generally decline(下降)as was expected．
    However，there was some decline in their psycho-motor(精神运动的)speed． This means that it took them longer to accomplish mental tasks than it used to．But when speed was not a factor，they lost very little intellectual (智力的) ability over the years.In general，Dr．Jarvik’s studies have shown that there is no decline in knowledge or reasoning ability．This is true not only into the 30s and 40s，but into the 60s and 70s as well．
    As for learning new things，and ability to remember，studies by Dr．Jarvik and others show that the old are equal to the young．It is true that older people themselves often complain that their memory is not as good as it once was．However，much of  what we call“loss of memory”is not that at a11．
    In the cases where the older person’s mind really seems to decline，it is not necessarilv a sign of a decay due to becoming old or“senility”．Often it is simply a sign of a depressed emotional state．This depression usually can be got rid of by counseling(咨询)with a psychologist，or medicine which fights depression.
    In American society，when an older person loses something，we tend to call him or her“senile”．But notice that when a younger person loses something，he does not blame it on senility or loss of memory．He finds some other excuse!
    小题1:A long-term study of 136 pairs of twins showed that the only factor that declined over the years was  .
    A．mental healthB．intellectual ability
    C．the amount of knowledgeD．psycho-motor speed
    小题2:According to Dr．Jarvik’s studies，middle-aged and older persons should expect to     .
    A．reason betterB．learn fewer new things
    C．remember lessD．1ose little ability to remember
    小题3:The word“senility”most likely means       .
    A．excellent healthB．weakness in body and mind because of old age
    C．occasional forgetfulnessD．giving up one’s life
    小题4:Both younger and older persons should realize that          .
    A．a sign of a decay due to old age or“senility’’is a common thing
    B．older persons are wiser than younger ones because of different knowledge amount
    C．senility or mental decay due to aging is much less common than most of us believe
    D．a sign of a depressed emotional state is not a reason of decay

    小题1:D
    小题1:D
    小题1:B
    小题1:C

    小题1:由第二段第一句可知，被跟踪调查的136对双胞胎只是精神运动速度有所减慢。
    小题1:从文章第二、三段可知，中老年的记忆、推理能力不会有多少衰退。
    小题1:文中“senility”前的“a sign of decay due to old”即是其解释。
    小题1:通读全文可知，老年智力衰退并没有我们想的那么普遍和严重。
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    科目：高中英语 来源：不详 题型：阅读理解

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    科目：高中英语 来源：不详 题型：阅读理解

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    科目：高中英语 来源：不详 题型：阅读理解

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