LSAT test 61题

yuyemanbu · 发表于 2011-1-21 21:07:22

61. Investigatorsconcluded that human failure was not responsible for the fatal airplane crashlast August, and since that time new and more stringent rules for identifyingand reporting mechanical problems have been in effect. That accounts for thefact that reports of airplane mechanical problems have increased in frequencyby 50 percent since last August.
Which one of thefollowing is an assumption underlying the argument in the passage?
(A) Airplanetravel is still relatively safe, despite the increase in reported mechanicalproblems.
(B) Mechanicalproblems in airplanes have increased dramatically since last August.
(C)Mechanical problems in airplanes have not increased by 50 percent since lastAugust.
(D) Airlines are lessreluctant to report mechanical problems than they previously were.
(E) Mechanicalproblems in airplanes have become easier to detect since last August.
答案选的C，我选了D,虽然我不认为Ｄ是对的，但我怎么也看不出来Ｃ为什么对了，麻烦哪位大牛解释一下？

sdcar2010 · 发表于 2011-1-21 22:05:33

Use negation method.

If echanical problems in airplanes HAVE increased by 50 percent since lastAugust, then the original conclusion (more stringent rules of reporting mechanical problems would NOT account for the 50% increase in reports of mechanical problems) would be wrong.

Hence, C is the assumption.

jamily_2008 · 发表于 2011-2-19 01:36:43

举个例子: 女人化妆后变好看了.言下之意, 前提是:女人化妆前不那么好看.对吧~

LSAT test 61题

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