GMAT逻辑题练习及答案(361)

2017-08-22 09:51

来源：新东方在线

作者：

　　GMAT逻辑题目:

　　To become an expert on a musical instrument, a person mustpractice. If a person practice a musical instrument for three hours each day,they will eventually become expert on that instrument. Therefore, if a personis an expert on a musical instrument, that person must have practiced for atleast three hours each day.

　　Which one of the following most accurately describes a flawin the reasoning above?

　　A. The conclusionfails to take into account that people who practice for three hours every daymight not yet have reached a degree of proficiency that everyone would considerexpert.

　　B. The conclusionfails to take into account that practicing for less than three hours each daymay be enough for some people to become experts.

　　C. the conclusionfails to take into account that if a person has not practiced for at leastthree hours a day, the person has not become an expert.

　　D. The conclusionfails to take into account that three consecutive hours of daily practice isnot recommended by all music teachers.

　　E. The conclusionfails to take into account that few people have the spare time necessary todevote three hours daily to practice.

　　参考答案:B

　　思路：In my view, the reasoning in this argument is that:

　　a person practice a musical instrument for three hours each day they will eventually become expert

　　Under this circumstance , it is obvious that the fact that a person practice a musical instrument for three hours each day is sufficient to reach the sound conclusion that they will eventually become expert on that instrument. But this fact is not the necessary factor relevant to the conclusion that they will eventually become expert on that instrument.

　　After this analysis, we can make clear the logical flaw in this argument.

　　a person is an expert on a musical instrument person must have practiced for at least three hours each day

　　So, we can easily find the correct answer is B.

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