单项选择题

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
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单项选择题
Which of the following situations will cause the death of a child
A．The child clears its body of bacteria.
B．The body loses liquids without any control.
C．The child has diarrhea in a developing country.
D．The body controls its fluid levels.
单项选择题
By sending this letter, the writer expected to ________.
A．draw the attention of the company
B．get an opportunity for an interview
C．apply for a suitable position in China Daily
D．obtain more information about the company
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