分析 本文属于说明文阅读,作者通过这篇文章主要向我们描述了人类的生命由于生物技术的发展可以无限期延长的愿望有可能成为现实.
解答 17.A.细节理解题.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;故选A.
18.A.推理判断题.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;故选A.
19.D.推理判断题.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;故选D.
20.C.推理判断题.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);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.
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