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A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibora's extinction.

Which of the following, if true, most seriously weakens the argument above?

正确答案: D

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大家看看这题答案是不是给错了?

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楼主
发表于 2008-3-5 01:44:00 | 只看该作者

大家看看这题答案是不是给错了?

1.     A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibora’s extinction.

Which of the following, if true, most seriously weakens the argument above?

(A) The drug made from ibora bark is dispensed to doctors from a central authority.

(B) The drug made from ibora bark is expensive to produce.

(C) The leaves of the ibora are used in a number of medical products.

(D) The ibora can be propagated from cuttings and grown under cultivation.E

(E) The ibora generally grows in largely inaccessible places.

 

答案给的是E,我觉得应该是D,大家看看。。。

答案给的是E,我觉得应该是D,大家看看。。。

沙发
发表于 2008-3-5 06:42:00 | 只看该作者
结论中的extinction是重心,weaken一定要与灭绝有关。d说它能通过cutting再生,但长得再快也快不过cutting的速度。而e则更准确,因为inaccessible places很难cut到,自然也就不容易灭绝了。
板凳
发表于 2008-3-5 22:38:00 | 只看该作者

没错啊,你看看og11的27题,答案就是d.

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