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[问答] GRE逻辑 [复制链接]

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发表于 2012-5-1 00:07:53 |只看该作者 |倒序浏览
6 In the workplace, influenza is typically spread by
infected individuals to others with whom they work
in close quarters. A new medication that suppresses
the symptoms of influenza therefore will actually
increase the number of influenza cases, because this
medication will allow people who would otherwise be
home in bed to return to work while infected.
Which of the following, if true, most seriously chal-
lenges the prediction?
(A) Coughing, a symptom of influenza that the new
medication suppresses, is a primary mechanism
in the spread of this illness.
(B) Some medications that are used to suppress
symptoms of influenza are also used by many
people to treat symptoms that are caused not
by influenza but by other illnesses.
(C) Many workers who now remain at home when
infected with influenza do so because the
symptoms of influenza prevent them from per-
forming their jobs effectively.
(D) Most adults who are immunized against influ-
enza in order to avoid being infected are over
65 years old and retired and thus do not work
outside the home.
(E) Symptoms of an illness are often the body's
means of curing itself of the illness, and there-
fore suppression of symptoms can prolong the
illness that causes them.
不太明白,答案选A,求解答啊!!!
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GRE斩浪之魂

沙发
发表于 2012-5-1 10:36:15 |只看该作者
1.这个prediction说:这种药只治症状而不治本,得病的人吃了药症状消退可能病还没治好,因此会传染更多人;
2.再看前提,也就是第一句话influenza is typically spread by infected individuals to others with whom they work in close quarters,可以知传染的机制是人对人传染;
3.那么challenge这个prediction只需要达到“即使病还没治好但已经不会传染更多人”的效果就好了,所以选A,因为它切断了传染的途径。

也许这个题不要第2步也能做,但是我强烈建议对challenge/undermine这类逻辑题都经过“考虑前提”这一步(自己总结的,一般人我不告诉他哦~)。因为破坏前提可以达到直接削弱的作用,前提可以作为入手点。就算解题时不需要用到这个前提,它也提示给你正确选项的方向,于是看完选项A就非常确定地不再往下看了。
脚踏实地!

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板凳
发表于 2012-5-1 18:09:31 |只看该作者
讲解的太清楚了~谢了哈~

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RE: GRE逻辑 [修改]
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