我的几道LSAT逻辑3

renaversace

8. Of 2,500 people who survived a first heart attack, those who did not smoke had their first heart attack at a median age of 62. However, of those 2,500 people who smoked two packs of cigarettes a day had their first heart attack at a median age of 51. On the basis of this information, it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day.
The conclusion is incorrectly drawn from the information given because this information does not include
(A) the relative seventy of heart attacks suffered by smokers and nonsmokers
(B) the nature of the different medical treatments that smokers and nonsmokers received after they had survived their first heart attack
(C) how many of the 2,500 people studied suffered a second heart attack
(D) the earliest age at which a person who smoked two packs a day had his or her first heart attack
(E) data on people who did not survive a first heart attack
结论不是最后一句it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day. 吗？那跟答案E说的能不能够挺过FIRST ATTACK有什么关系呢？我怎么觉得5个答案都跟结论没什么关联呀？？

天山

作者调查的是生还者2500人，假若另外还有2500名心脏病患者已经死掉了，而对死者进行调查分析得出的结论与生还者相反，则作者的结论是错误的，片面的。调查心脏病者的习惯应该包括那些已经死去的患者，正如E所讲。

renaversace

恩恩！经典！