[問題] OG12-CR-1
看板GMAT (GMAT入學考試)作者chenemily (天天保持好心情)時間15年前 (2011/03/28 17:08)推噓1(1推 0噓 10→)留言11則, 3人參與討論串1/2 (看更多)
"Life expectancy" is the average age at death of the entire live-born
population. In the middle of the nineteenth century, life expectancy in North
America was 40 years, whereas now it is nearly 80 years. Thus, in those days,
people must have been considered old at an age that we now consider the prime
of life.
Which of the following, if true, undermines the argument above?
(B)Most of the gains in life expectancy in the last 150 years have come from
reductions in the number of infants who die in their first year of life.
想請問B 看不出來哪裡反駁
題意:19C:人均壽命-40 現在:人均壽命-80
結論是:在19C 40歲是被認為老的 但是在現在是被認為是壯年
B只是說明嬰兒的死亡率下降 請問哪裡反駁
感謝
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