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All intelligent people are near-sighted. I am very nearsighted. So i must be a genius.
Which one of the following exhibits both of the logical flaws exhibited in the argument above?
B) All chickens hv beaks. This bird has a beak. So this bird must be a chicken.
C) John is extremely happy. so he must be extremely tall, because all tall people are happy.
两个选项都是把充分条件,当作必要条件。选C是不是因为intelligent 和genius的偏差与happy和extremely happy的偏差类似,还是别的原因?


Even if a crime that has been committed by computer is discovered and reported, the odds of being both arrested and convicted greatly favor the criminal.
Each of the following, if true, support the claims above except:
C) The priorities of local police departments, under whose jurisdiction most computer crime falls, are weighted toward visible street crimes that communities perceive as threatening.
D) Computer criminals are rarely sentenced to serve time in prison, because prisons are overcrowd with violent criminals.

Why answer D? C 和D的出发点应该差不多的啊?

[em20]
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crackok第一题解释地很清楚
第二题我还有疑问,因为监狱没空位会影响到convict时判刑的程度

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crackok: 你的解释非常到位,让人感觉思路很清晰,佩服!

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第一题是因为B中说小鸡有喙,这个本身并不构成判断是不是小鸡的条件,注意这句并不象题干和C一样,是个判断句.
第二题,警力都倾注于街头犯罪,能说明为什么逮到并判罪的少.但监狱没空位,并不能说明为什么没逮到.
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我们的口号是:路虽远,行则必至;事虽难,做则必成。

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