[問題] CR問題
People rarely recognize the fact that being
underweight is as dangerous to health as being overweight.
But the death rate for individuals who are ten percent underweight,
like that for those thirty percent overweight, is almost twice what it
is for individuals of normal weight.
The dangers of being underweight supported by the statistic above appear
less serious if which of the following is true?
(A) Many of the underweight persons studied had lost weight as a result of
illness or disease.
(B) Conception of underweight and overweight varied widely among those
studied.
答案是A，
不過我覺得答案A怎麼好像在支持原文，不像反駁....
有請各位幫我開竅一下這一題的邏輯
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