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单选题
When the mixture is used, it is important to ______.
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
参考答案
参考解析
解析：
根据文章第三段，it keeps fluid (体液) levels normal until the body has fought off the harmful bacteria.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。因此B选项正确。
根据文章第三段，it keeps fluid (体液) levels normal until the body has fought off the harmful bacteria.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。因此B选项正确。
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共用题干
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单选题Cooking is an effective way in preserving food because _____.A
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cooking can make the food become dryC
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