18.What will people die of 100years 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 diseases,cancer,and aging itself,will become distant memory.
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 120years 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 2050and 2100,medicine will have advanced to the point at which every 10years 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 conditional human existence,but many technical problems still must be cleared up on the way to this wonderful future.
25.According to the passage,human death is now mainly caused byA.
A.diseases and aging B.accidents and war
C.accidents and agingD.heart diseases and war
26.In the author's opinion,today's most important advance in technology lies inA.
A.medicine B.the internet C.brain cellsD.human organs
27.Humans may live longer in the future becauseA.
A.human organs can be repaired by new medicine.
B.human brains can decide the final death.
C.the basic materials of cells will last forever.
D.heart disease will be far away from us.
28.We can learn from the passage thatC.
A.human life will not last more than 120years in the future.
B.human can have a much longer life now.
C.we don't have the technical problems in helping humans live longer at all.
D.much needs to be done before humans can have a longer life.
分析 本文是一篇医学科普题材的文章.介绍了在未来,由于医学的高度发达,人类的寿命将会更加长久.
解答 25.A.细节理解题.由文章第一段Today's leading killers,such as heart diseases,cancer,and aging itself,will become distant memory可知现在人类死亡的主要原因是心脏病、癌症和衰老;故选A.
26.A.细节理解题.由文章第二段第二句"But the change in medicine can be real technological event of our times."可知作者认为,当今技术最重要的发展是医学;故选A.
27.A.推理判断题.根据第二段倒数第二句"sometime between 2050 and 2100,…people will be able to take medicine to repair their organs"可知在2050~2100期间,每隔10年左右,人们可以通过吃药来修整生病的或衰老的器官,这应是未来长生不老的原因,故选A.
28.C.主旨大意题.全文主要介绍了科技发展尤其是医学的发展给人类带来的巨大突破.但文章最后一段告诉人们要想实现这个目标仍有好长的路要走;故选C.
点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.