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    The earth's biosphere (the surface layer of the planet and the surrounding atmosphere) provides the land, air, water, and energy necessary to sustain life. This life-support system is a complex, interdependent one in which energy from the sun is changed into food for humans. The entire system depends on the sun, reasonably moderate temperature, and enough supplies of oxygen, pure water, and fertile soil.
    Since the earth's creation millions of years ago, the ecosystem has worked as an interdependent system relatively undisturbed by outside forces. But recently, especially since the Industrial Revolution, human beings have begun to disturb the balance of nature. Natural resources have been severely depleted (消耗) (forests have been destroyed, fertile land worn away, water polluted, and minerals used up), and the life-support system of air, water, and land has been poisoned by a variety of waste products and chemicals.
    The degree of these problems was noted in a report by the U.N. Developing Council on Environmental Quality. This report predicted that if present trends continue, the world will be more crowded and polluted and less stable ecologically and politically than the world we live in now.
    The twin problems of resource shortages and pollution are caused by three social forces.  First, the tremendous increase in population growth constantly increases the demand for food, energy, and other products. As the current population continues to increase, the stress on an already overburdened environment will be increased．A second source of the problem is the concentration of people in urban areas, where the ecosystem simply cannot absorb their waste products. Finally, environmental problems are worsened as more and more nations move toward modem development: an increased reliance on modern technology. As these nations become more technological, they will consume more energy, deplete more natural resources, and create more waste products than the biosphere can absorb.
    小题1:The life-support system is composed of _____.
    A．air, water and landB．the earth, the sun and energy
    C．food, land and energyD．food, energy and the sun
    小题2:The life-support system _____.
    A．change energy from the sun into food for humans
    B．depends on the sun for enough supplies of air, water and land
    C．exists in the surface layer of the earth and the surrounding atmosphere
    D．is a complex but independent system
    小题3:The life-support system has been badly damaged by _____.
    A．natural forcesB．human activitiesC．social movements D．political changes
    小题4:The passage mainly talks about _____.
    A．the effects of Industrial Revolution on human beings
    B．the importance of life-support system to human beings
    C．the significance of balance of nature
    D．the destruction of life-support system and its causes

    小题1:A
    小题2:B
    小题3:B
    小题4:D
    这是一篇环保类短文，本文讲叙的是：地球的生物圈提供了一种由土地、空气、水和能量组成的生命支持系统，这一系统将太阳能转化为人类的食物。
    小题1:细节理解题。根据文章开头前两句，（the land, air, water, and energy necessary to sustain life）生命支持系统是由土地、空气、水和能量组成的。
    小题2:细节理解题。根据第一段第二、三句，（The entire system depends on the sun）生命支持系统是一个复杂的相互依赖的系统，在此系统中太阳能被转化为人类的食物。
    小题3:归纳概括题。在第二段中提到，尤其工业革命后，人类开始扰乱自然界的平衡，自然资源大量枯竭，主要是通过排放废产品和化学物质。所有上述行为可归结为human activities。
    小题4:主旨大意题。文章开头先讲了生命支持系统是什么，然后又讲了由于人类行为而造成的问题以及造成这些问题的三种社会力量，所以D项能概括这几层意思。
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    科目：高中英语 来源：不详 题型：阅读理解


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    科目：高中英语 来源：不详 题型：完形填空

    阅读下面短文，简要回答问题。
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    74.小题2:According to Americans, what does baloney refer to? (回答词数不超过8个)
                                                                      
    75.小题3:What do you know about the lord of Blarney castle, near Cork?  (回答词数不超过6个)
                                                                      

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    科目：高中英语 来源：不详 题型：阅读理解

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    科目：高中英语 来源：不详 题型：阅读理解

    Every human being has a unique① arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.
    The ridge structure on a person’s fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original② pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.
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    ①    unique  adj. 唯一的，独特的
    ②    original  adj. 最初的，原始的
    ③    identification  n. 辩认，鉴定
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    C．be the same when the wound is recoveredD．become ugly
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    C．damaging the outer skin D．damaging the colour
    小题4: Finger-prints have often been used as a method of solving criminal case because it ________.
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    C．is expensive but easy to doD．can bring a lot of money

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