LSAT1-IV-22问题请教

albert · 发表于 2003-6-19 01:34:00

22. It is illogical to infer a second and different effect from a cause which is known only by one particular effect. This is incorrect because the inferred effect must necessarily be produced by some different characteristic of the cause than is the observed effect, which already serves entirely to describe the cause.

Which one of the following arguments makes the same logical error as the one described by the author in the passage?

(A) An anonymous donor gave a thousand dollars to our historical society. I would guess that that individual also volunteers at the children’s hospital.

(B) The radioactive material caused a genetic mutation, which, in turn, caused the birth defect. Therefore, the radioactive material caused the birth defect.

(C) The tiny, unseen atom is the source of immense power. It must be its highly complex structure that produces this power.

(D) The city orchestra received more funds from the local government this year than ever before. Clearly this administration is more civic-minded than previous ones.

(E) If I heat water, which is a liquid, it evaporates. If I heat hundreds of other liquids like water, they evaporate. Therefore, if I heat any liquid like water, it will evaporate
答案是A。。看不懂原文，请教。

谢谢。

mindfree · 发表于 2003-6-19 02:43:00

In A, the second effect is "volunteers at the children’s hospital". The particualr effect and pbserved effect is "gave a thousand dollars to our historical society". The error described in the passage is that it is wrong to conclude that another different effect is derived from the same cause of an observed effect, which is the only effect of that cause.

In A, it is wrong to conclude that volunteer is the effect of the same cause that make the person donate money. It should be from another cause. Here the cause is not specified.

albert · 发表于 2003-6-19 02:55:00

oh...I see...thank you, mindfree.
I mistakenly thought that there is some logic errors in the argument of passage...The passage just describe an error, there is no logic error throughout the passage...

thank you..

freemind301 · 发表于 2003-6-19 03:00:00

thanks a lot , mindfree.

I got it.

linchechin · 发表于 2004-4-24 21:59:00

Thanks!!!Mindfree!!

LSAT1-IV-22问题请教

LSAT1-IV-22问题请教

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