狒狒110

cherryserena

Animals with a certain behavioral
disorder have unusually high levels of aluminum in their brain tissue.
Since a silicon-based compound binds to aluminum and prevents it from
affecting the brain tissue, animals can be cured to the disorder by
being treated with the compound.

    The argument is based on which one of the following assumptions?

    (A) Animals with the disorder have unusually high but invariable levels of aluminum in their brain tissue.

    (B) Aluminum is the cause of the disorder rather than merely an effect of it.

    (C) Introducing the compound into the brain tissue has no side effects.

    (D) The amount of the compound needed to neutralize the aluminum in an animal’s brain tissue varies depending upon the species.

    (E) Aluminum is never present in normal brain tissue.
答案是B, 但我选C
主要是因为那个merely, 也就是说aluminum 不仅是结果, 更加重要的是他是原因, 这样的话答案就不如C好
哪位能帮我解惑? side effects 是副作用的意思!

heywendy

解释得特别好！

cherryserena

谢谢LZ!

ChinaHawk

lz你的思维还没有转换到逻辑题的思维上去

题干中说a病会出现b现象 然后说c能使b现象消失 因而c能治a病

这里题干并没有说是b现象是a病的发生的原因 如果只是现象 结论无法推出

就比如说精神紧张的人常常会伴有失眠 安眠药可以治疗失眠 我们能说安眠药可以治疗精神紧张吗？

失眠只是精神紧张所伴随的一个现象而并非原因

所以要的出题干的结论 应如B所述

对C 首先side effect是题干根本没提到过的新词 其次 本题的中心在于它到底能不能治 有side effect又怎么样 它根本不影响我结论的推出

它还是可以治病 只不过可能导致其他不好的结果罢了

做逻辑题不要带太多常识进来思考 要紧扣题干