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    12．Besides giving off gases and dusts into the air，humans produce waste that is poured on the environment．Often，this waste produced by major industries and people is harmful to both nature and human life．
    One of the main causes of the large amount of dangerous waste is that people do not realize how large a problem it is．Because it can be simply removed and sent to a landfill（废渣填埋场），the problem is often believed to end there．In addition，industries have often shown an unwillingness to find ways to deal with dangerous waste because of the re-lated expenses．Many industries and governments build simple landfills to store waste，and often just pour waste chemicals into nearby bodies of water．Often，chemicals used for industrial production cause dangerous forms of waste．The amount of these chemicals has increased greatly in the past，but it is often difficult and expensive to get rid of these chemicals or to store them in a way safe to human life and the environment．
    Every year，major health problems result from dangerous waste．Sadly，it is often only after someone has died or become seriously ill that governments will take measures to reduce levels of harmful waste．
    Some governments have realized how serious the dangerous waste problem is and are now trying to settle this problem．They are also trying to limit the amount of waste industries are allowed to produce．
    Not only governments but ordinary people as well must work together to solve the problem．They can choose not to buy those products which require the production of dangerous waste，and produce less harmful waste themselves．Many scientists think that waste production can be cut．The waste can be reduced by at least one third using existing technologies and methods．
    56．What would be the best title for the text？B
    A．Measures of Reducing Dangerous Waste     
    B．Danger of Harmful Waste to Mankind
    C．Dangerous Waste and Water Pollution      
    D．Environmental Protection
    57．According to the text，peopleC．
    A．do not produce harmful waste in their daily life
    B．do not know where to place the dangerous waste
    C．are not clear about how serious the dangerous waste problem is
    D．are not sure about where harmful waste ends
    58．What troubles industries most in dealing with the dangerous waste problem？D
    A．How to get government support．
    B．How to increase their production．
    C．How to store harmful waste．
    D．How to cut down the related costs．
    59．What can be inferred from the passage？A
    A．To solve the problem requires the efforts of the whole society．
    B．Present technologies have settled the harmful waste products．
    C．Everyone should obey the government rules for the problem．
    D．The polluting industries are not allowed to sell their products．

    分析 本文是一篇科教类阅读，主要讲的是危险废弃物对人类和自然的危害．

    解答 56-59．BCDA
    72．B 考查主旨大意，统观全文，知道是在讲危险废弃物对人类和自然的危害，故应选B．
    73．C 考查细节推理，根据文章第二段的"One of the main course…is that people don't realize how large a problem it is．"（主要的问题之一是人们并未意识到问题有多大）．可知C为正确选项．
    74．D考查细节推理，根据文中第二段"In addition…because of the related expenses．"（另外，由于相关的开支）．可知D为正确答案．
    75．A 考查细节推理．根据文中最后一段"Not only governments…to solve the problem．"（不仅是政府…解决该问题）．可推出D为正确答案．

    点评 本文是一篇科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对 性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．

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