OG 26.The average normal infant born in the United States weighs between twelve and fourteen pounds at the age of three months.Therefore,if a three-month-old child weights only ten pounds,its weight gain has been below the United States average.
which of the following indicates a flaw in the reasoning above?
A.Weight is only one measure of normal infant development.
B.some three-month-old children weigh as much as seventeen pounds.
c,it is possible for a normal child to weigh ten pounds at birth.
d.the phrase "below average "does not necessarily mean insufficient.
e.average weight gain is not the same as average weight.
答案是e，但什么是“average weitht gain"呢？d选项又如何翻译？请教高手
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