单选题
According to the passage, the alarming increase in the rate of diabetes among children in the UK may partly be explained by the rise in
A、
the proportion of children born to mothers aged above 30.
B、
the incidence of diabetes in the whole country.
C、
the supply of diabetes medicines.
D、
the number of newborn babies.
【正确答案】
A
【答案解析】
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