OG-68

KATIEUS

babypace

EXACTLY！

laveri

虽然最后我第二遍做的时候答案选了D，但还是得说

这题其实答案D也很扯，这个植物有生产不代表就不会灭绝，如果生产速度赶不上消耗的速度的话。很多动物都是可以繁殖的，甚至搞什么人工培育，为什么灭绝了呢？D也只是一个必要条件，不是充分条件。

再看E-植物正在做难以获取的地方，那么被剥皮的速度就慢，这样就给该植物的生长留下了时间和空间。这个逻辑没有问题啊。

D和E其实都有道理。

nolanhym

噢噢噢噢噢噢噢噢噢噢噢噢噢噢噢噢噢噢噢噢！！！！！！

我终于理解真谛了！！！！！！！！！！！！！！！！！

请看manhattan instructor 的这篇回复（http://www.manhattangmat.com/forums/a-drug-that-is-highly-effective-in-treating-many-types-of-in-t3788.html）：
Notice how D speaks directly to this issue. If the tree can, in fact, be grown from cultivation then extinction will not be an inevitable outcome. This severely weakens the extinction argument.

The rationale you give for E assumes that the inaccessibility of the ibora will eventually stop production, and so the tree won't become extinct. A better way to weigh E is to consider that even if the trees are found only in inaccessible places, the conclusion would still hold: IF production of the drug continues, THEN the tree would still become extinct. Choice E in no way addresses the extinction issue directly. Surely your line of reasoning makes sense, but it's too complicated a tale to be a typical GMAT correct answer. I might give E a "slightly weakens" while D is a "severely weakens."

所以其实就没有Mostly 或者 slightly的区别，没有靠感觉这个选项更好一点：只有对于错，只有攻击argument的logical chain本身才可以算对?

争取一次就过

babypace 发表于 2004-12-14 05:38
OG的意思我理解是：如果大部分bark生长在人们无法去的地区，那么不存在我们大量使用后的结果了，因为我们连 ...

同意！