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    Scientists have developed a water treatment system that they say is a powerful but simple way to save lives. Four grams of chemicals can treat ten liters of dirty water for a low cost, about ten cents.
    Experts say infections from dirty water kill several thousand children in developing countries every day. The Procter and Gamble company has been developing the "PUR Purifier of Water" system since 1995. The company has been working with the United States Centers for Disease control and Prevention(C.D.C.).
    C.D.C. researchers tested it in Guatemala, Pakistan and Kenya. Procter and Gamble researcher Greg Allgood says cases of diarrhea(腹泻) in those studies fell by about 50 percent. Researchers from Johns Hopkins University in Maryland tested the system at a refugee camp in Liberia. Mr. Allgood says that study found a reduction of more than 90 percent. Use of the system is being expanded worldwide.
    The treatment contains bleach(漂白剂) to kill disease-causing organisms. It also contains something that dirt and other particles stick to. Mr. Allgood says the chemicals can remove lead and other dangerous metals and even agricultural poisons like D.D.T.
    Mr. Allgood heads the Children's Safe Drinking Water program at Procter and Gamble. He says about forty million packets of the treatment have been given to countries for free. They have been used in emergencies and in areas with limited supplies of clean water.
    Clean water is a limited resource in many parts of the world. Delegates from about 130 nations attended the Fourth World Water Forum last month in Mexico City. Scientists, policy experts and others discussed ways to provide clean water to the world’s poor. Organizers say more than twenty percent of the world population lacks clean drinking water. The final declaration did not go so far as to declare water a human right. But it did say that governments, not private companies, must take the lead in improving the public’s ability to have clean water.
    46. What is mainly talked about in this passage?
    A. Water pollution around the world.
    B. The causes of diarrhea in African countries.
    C. A newly developed water treatment system.
    D. The Fourth World Water Forum in Mexico City.
    47. Which of the following developed the water treatment system?
    A. The US Centers for Disease Control and Prevention.
    B. The Procter and Gamble Company and C.D.C.
    C. The Children’s Safe Drinking Water Program.
    D. Johns Hopkins University.
    48. Which of the following about the new water treatment system is NOT true?
    A. It is effective but very expensive.
    B. It was tested in Guatemala, Pakistan and Kenya.
    C. It is being expanded worldwide.
    D. It can remove dangerous metals in the water.
    49. Which of the following shows that the shortage of clean water is a serious problem?
    A. Forty million packets of the treatment have been given to countries for free.
    B. Delegates from about 130 nations attended the Fourth World Water Forum.
    C. Four grams of chemicals can treat liters of dirty water for a low cost.
    D. Infections from dirty water kill several thousand children every day.
    50. The best title for this article is ______.
    A. A Small Packet of Chemicals, a Big Effect on Dirty Water
    B. The Procter and Gamble Company and C.D.C.
    C. The Shortage of Clean Water                           
    D. How to Cure Diarrhea

    小题1:C
    小题2:B
    小题3:A
    小题4:D
    小题5:A
    略
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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

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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


    Stay and Play for 2 Days
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    科目：高中英语 来源：不详 题型：阅读理解


    第三部分：阅读理解（共20小题，每题2分，满分40分）
    阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
    Eight – year – old Jesse Abrogate was playing in the sea late one evening in July 2001 when a 7 – foot bull shark attacked him and tore off his arm. Jesse’s uncle jumped into the sea and dragged the boy to shore. The boy was not breathing. His aunt gave him mouth – to – mouth resuscitation (人工呼吸) while his uncle rang the emergency services. Pretty soon, a helicopter arrived and flew the boy to hospital. It was a much quicker journey than the journey by road.
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    A．By finding his lost arm.     B．By shooting the fish.
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    科目：高中英语 来源：不详 题型：阅读理解

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    67. We can infer from the passage that         .
    A. positive thinking can cure you of your diseases
    B. positive thinking can easily be generated by anyone
    C. a decline of hormone may cause you to be depressed
    D. a specific chemical reaction is the cause of negative thinking
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    A. Feeling and thoughts can generate each other.
    B. It's easier to control thoughts than to control feelings.
    C. Your success depends wholly on your attitude.
    D. Keeping smiling will surely make you successful.
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    A. take positive attitude in the office of militant negativism
    B. be king in your office
    C. pay no attention to what is going on around you
    D. control your feeling to what is happening to you
    70. The best title to the passage is               .
    A. the Bad Effect of Negative Thinking     B. Why Should People Think
    C. Positive Thinking Benefits People        D. Thinking: The Vital Way

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