2. 外语
  3. Forty-thousand of the world’s young children die every day. This is 15 million a year. Many of these deaths can be prevented. In

Forty-thousand of the world’s young children die every day. This is 15 million a year. Many of these deaths can be prevented. In

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问题     Forty-thousand of the world’s young children die every day. This is 15 million a year. Many of these deaths can be prevented. In fact, experts say, techniques now exist to save the lives of half of these children. The techniques are medically effective, simple to use and low cost. The biggest task has been to inform parents about these life-saving techniques.
    Diarrhea(腹泻)is the main cause of deaths among children in developing countries. Diarrhea results when the body tries to clear itself of harmful bacteria(细菌). The body does this by getting out liquids, sometimes uncontrollably. If too much water, sugar and salt are lost in this way, the body cannot work normally. The child may die.
    The United Nations International Children’ s Fund, UNICEF, introduces a technique. It uses a simple mixture of sugar and salt in water. The mixture does not stop diarrhea. But if used often as needed, it keeps fluid(体液)levels normal until the body has fought off the harmful bacteria. In Egypt, for example, the treatment was used in a children’ s health care program in the province of Alexandria. It reduced by one-half the number of deaths caused by diarrhea. The technique has now been used throughout the country.
When the mixture is used, it is important to______.
选项 A、keep sugar and salt in water
B、drink it as often as necessary
C、take it as much as possible
D、use it to kill the bacteria
答案B
解析 推理判断题。题目询问混合物要怎样服用才会对腹泻起作用。答案在文章的第三段。文章说到虽然这种混合物对腹泻并没有立竿见影的效果，但如果能坚持服用的话会对腹泻起作用的。所以正确答案为B。
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