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高中三年级英语

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    The inhalation (吸入) of asbestos particles is associated with a number of lung diseases, such as asbestosis and ___50___ cancer. 
    Asbestosis is caused by the entry of asbestos particles into the wall of the alveoli, causing scarring which limits the functioning of the lungs.  The lung ___51___ its elasticity and may change shape.  The initial symptoms of asbestosis are a tightness in the chest and breathlessness.  In its ___52___ stages, sufferers develop the barrel-shaped chests associated with emphysema, cyanosis, (where the skin takes a bluish ___53___ ) and club fingers.
    Lung cancer, the generic ___54___ for malignant tumors(肿瘤)of the alveoli and bronchial tubes, has been shown to be directly ___55___ to the inhalation of asbestos particles.  As in the case of asbestosis, there is generally a period of inactiveness which may ___56___ from 25 to 30 years after initial exposure, despite the ___57___of further exposure.  Research suggests that there is a direct correlation between the degree of exposure to asbestos ___58___the incidence of lung cancer.  Where exposure occurs, the level of risk is further ___59___ by cigarette smoking.  Asbestos workers who smoke cigarettes have a 90% greater risk of catching lung cancer than workers who do not ___60___. 
    Exposure to blue asbestos has been shown to producemesothelioma, a rare cancer of the outer lining of the lung or pleura.  In a normal population the incidence of mesothelioma is extremely ___61___. Where epidemiological surveys have revealed a higher incidence of the disease, it is almost always related to ___62___ exposure.
    ___63___ changes in lung tissue caused by exposure to asbestos are pleural plaques and effusions.  The former refer to a thickening of the lining of the chest wall, ___64___ the latter consists of a collection of fluid in the chest region outside the lungs.  Pleural plaques commonly remain undiagnosed and generally have no detrimental effect on health.
    小题1:
    A.skin B.blood C.liver D.lung
    小题2:
    A.losesB.gainsC.improves D.tightens
    小题3:
    A.earlyB.formalC.laterD.final
    小题4:
    A.sizeB.colorC.soundD.smell
    小题5:
    A.nounB.term C.wayD.approach
    小题6:
    A.relatedB.revealedC.comparedD.exposed
    小题7:
    A.disappearB.spreadC.liveD.extend
    小题8:
    A.presenceB.activenessC.absenceD.intensity
    小题9:
    A.and B.alongsideC.as well asD.plus
    本题信息:英语完形填空难度较难 来源:未知
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    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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