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    Whatever our differences as human beings are we all think we’re more like the rest of the animal world than we realize. It is said that we share 40 per cent of our genetic(遗传的)structure with the simple worm.
    But that fact has helped Sir John Sulston win the 2002 Nobel Prize for Medicine. Sir John is the founder of the Sanger Institute in Cambridge, which was set up in 1992 to get further understanding of the human genome(染色体组).
    To help them do this, they turned to the worm. The nematode(线虫类的)worm is one of the earliest creatures on planet earth. It is less than one millimeter long, completely transparent and spends its entire life digging holes through sand. But it still has lots to say about human life, and what can be done to make it better.
    What the worm told Sir John and his colleagues was that each of the cells in the human body is programmed like a computer. They grow, develop and die according to a set of instructions that are coded in our genetic make-up.
    Many of the diseases that humans suffer from happen when these instructions go wrong or are not obeyed. When the cell refuses to die but carries on growing instead, this leads to cancer. Heart attacks and diseases like AIDS cause more cell deaths than normal, increasing the damage they do to the body. Sir John was the first scientist to prove the existence of programmed cell death.
    小题1:Sir John Sulston got a Nobel Prize for Medicine because he has         .
    A.found that human beings are similar to the worm
    B.got the fact we share 40 per cent of our genetic structure with the simple worm
    C.found the computer which controls each of the cells in the human body
    D.proved that cell death is programmed
    小题2:People might be seriously ill if the cells in their body        .
    A.grow without being instructedB.die regularly
    C.fail to follow people’s instructionsD.develop in the human body
    小题3:The underlined word“they”(paragraph 5)refers to        .
    A.cell deathsB.diseasesC.instructionsD.cells
    小题4:What is the subject discussed in the text?
    A.The theory of programmed cell deaths. B.A great scientist—Sir John Sulston.
    C.The programmed human life.D.Dangerous diseases.

    本题信息:英语阅读理解难度容易 来源:未知
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健康环保累阅读概念:

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。


健康环保类文章阅读技巧:

       健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考,理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文,从结构上看大致可分为三个部分:
       第一部分一般是文章的首段,主要用来提出文章的主题,即文章想要阐述、说明的主要内容;
       第二部分是文章的主体,可由若干个段落组成,对文章的主题进行展开说明;
       第三部分是结尾段,对文章的主题进行归纳总结。这类文章多用一般现在时,而且一般多使用客观性词语表述。有时为了强调客观性,也常使用被动语态。
       从近几年的考试题来看,科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节,很多同学对此类文章感到费解。但一般的科普类文章都是就事论事,需要逻辑推理和想象的时候较少,因此此类阅读题也没有同学们想象中的那么难,只要多加训练,就能较好地答题。
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