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    What will people die of 100 years from now?If you think that is a simple question,you have not been paying attention to the revolution that is taking place in bio-technology(生物技术).With the help of new medicine,the human body will last a very long time.Death will come mainly from accidents,murder and war.Today’s leading killers,such as heart disease,cancer,and aging itself,will become distant memories.
    In discussion of technological changes,the Internet gets most of the attention these days.But the change in medicine can be the real technological event of our times.How long can humans live?Human brains were known to decide the final death.Cells(细胞) are the basic units of all living things,and until recently,scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells,such as those of brain cells,would not last forever.But the upper limits will be broken by new medicine.Sometime between 2050 and 2100,medicine will have advanced to the point at which every 10 years or so,people will be able to take medicine to repair their organs(器官).The medicine,made up of the basic building materials of life,will build new brain cells,heart cells,and so on—in much the same way our bodies make new skin cells to take the place of old ones.
    It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence,but many technical problems still must be cleared up on the way to this wonderful future.
    【小题1】According to the passage,human death is now mainly caused by _______.

    A．diseases and agingB．accidents and war
    C．accidents and agingD．heart disease and war
    【小题2】In the author’s opinion,today’s most important advance in technology lies in _______.
    A．medicineB．the Internet
    C．brain cellsD．human organs
    【小题3】Humans may live longer in the future because _______.
    A．heart disease will be far away from us
    B．human brains can decide the final death
    C．the basic materials of cells will last forever
    D．human organs can be repaired by new medicine
    【小题4】We can learn from the passage that _______.
    A．human life will not last more than 120 years in the future
    B．humans have to take medicine to build new skin cells now
    C．much needs to be done before humans can have a longer life
    D．we have already solved the technical problems in building new cells


    【小题1】A
    【小题2】A
    【小题3】D
    【小题4】C

    解析【小题1】这是一道细节题。根据第一段“Today’s leading killers,such as heart disease,cancer,and aging itself,will become distant memories.”可知导致人类死亡的主要原因是疾病和衰老。
    【小题2】这是一道推断题。根据第二段“But the change in medicine can be the real technological event of our times.”可以推断出医药的改变是我们这个时代发展最大的技术。
    【小题3】这是一道推断题。根据第二段“But the upper limits will be broken by new medicine...medicine will have advanced to the point at which every 10 years or so,people will be able to take medicine to repair their organs.”可知医药将能够修复人的器官使人活得更长。
    【小题4】这是一道推断题。根据最后一段“but many technical problems still must be cleared up on the way to this wonderful future.”可知还有很多技术问题需要解决,才能实现(延长人类生命的目的)。

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