|
 
- 精华
- 0
- 积分
- 1050
- 经验
- 1050 点
- 威望
- 104 点
- 金钱
- 104 ￥
- 魅力
- 104
|
狒狒逻辑 50题 跪求跪求T^T
Questions 49-50
Joseph: My encyclopedia says that the mathematician Pierre de Fermat died in 1665 without leaving behind any written proof for a theorem that he claimed nonetheless to have proved. Probably this alleged theorem simply cannot be proved, since---as the article points out---no one else has been able to prove it. Therefore it is likely that Fermat was either lying or else mistaken when he made his claim.
Laura: Your encyclopedia is out of date. Recently someone has in fact proved Fermat’s theorem. And since the theorem is provable, your claim---that Fermat was lying or mistaken---clearly is wrong.
50. Which one of the following most accurately describes a reasoning error in Laura’s argument?
A. It purports to establish its conclusion by making a claim that, if true, would actually contradict that conclusion.
B. It mistakenly assumes that the quality of a person’s character can legitimately be taken to guarantee the accuracy of the claims that person has made.
C. It mistakes something that is necessary for its conclusion to follow for something that ensures that the conclusion follows.
D. It uses the term “provable” without defining it.
E. It fails to distinguish between a true claim that has mistakenly between believed to be false and a false claim that has mistakenly been believed to be true.
答案：C
思路：
Laura的论证过程：该理论已证明—>P没有说谎，他的CLAIM对。理论对并不能表明是P证明的，这只是必要条件，不是充分条件。
我不明白为什么给理论证明了不能说明P没有说谎呢？？为什么不是充分条件啊...还有就是C说的意思是混淆和充分条件和必条件么？？
这类问题总是错啊...求大牛牛指点啊！！
|
|
