单项选择题

A． When his stool becomes loose and watery.
B．When his diarrhea becomes inconveniently frequent and watery.
C．When his lips and mouth are dry.
D．When he loses a lot of body fluids.
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单项选择题
A．The stale food he ate. B．The fruit juice he drank. C．Too much food he ate. D．The cold he got.
A．The stale food he ate.
B．The fruit juice he drank.
C．Too much food he ate.
D．The cold he got.
单项选择题
A．Porridge. B．Purified wate. C．Pizza. D．Apple juice.
A．Porridge.
B．Purified wate.
C．Pizza.
D．Apple juice.
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