这道PREP虽然做对了但是思路很乱求大神分析！（SD呼叫ING）

DUKB24

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Editor:  Articles in Gardening Magazine often spur salesof the plants they describe, particularly among people new to gardening.  Accordingly, we will no longer publisharticles or accept advertisements praising the beauty of rare wildflowers.  Most such plants sold to gardeners have beendifficult to propagate under cultivation, so plant sellers often collect themin the wild.  Our new policy is part ofour efforts to halt this yearly plundering of our native plant populations.
Whichof the following, if true, casts the most doubt on the wisdom of the magazine'snew policy as a way of pursuing the intended effect?
A.When people new to gardening buy plants, they often fail to take adequate careof the plants that they buy and become discouraged from buying those varieties again.
B.Plant sellers who sell rare wildflowers have no reasonably inexpensivealternative way to offer their wares directly to new gardeners.
C.The demand for rare wildflowers rarely exceeds the number of such plants thatcan be collected in the wild by plant sellers.
D.The propagation of rare wildflowers often depends on the plants' interactionwith other organisms in their environment, such as plants that create suitablesoil conditions or insects and birds that disperse seeds.
E.Revenues from sales of plants collected in the wild are supporting thediscovery of new low-cost techniques enabling rare wild flowers to be readily propagated in nurseries.

DUKB24

这是个plan-goal类型的题。

evidence：稀有野花很少，又不好人工养殖，所以卖花的就从野外采。
plan：不宣传稀有野花了
goal：是不让卖花的去采摘这些花了。
题目要求你指出plan的不可行。
也就是你要解释这样一个问题：即使你不宣传了，我还是会去摘野花。E就很好说明了原因：我摘野花才有钱（联系结论），我有钱了才能去开发新的技术让我能人工种植出这些野花，我种出来了就不再那么difficult to propagate了（到这里，很好的与题目中的stimulus联系在了一起，多么完美的答案！）
不知道你懂没。。。

-- by 会员 秋晨小仔 (2012/5/14 1:11:13)

啊啊回复得好快我这几天都没看这个帖子了谢谢了！...我貌似也搞明白了，这题其他比较容易排除，当时就是排除做出来的...
今天看完貌似也懂了，贴上自己的分析欢迎大牛拍砖
A:消费者的习性和题目讨论无关，而且plant也不是本题讨论的范围，范围是wild flower就是native blabla....
B.加强（取消了对wild flower宣传，采花者自然sales就减少了，这里还要eliminate了一个 potential objection他们可能会继续采花）
C（需求与供给持平，现在广告没了，需求貌似还会少了一点，那么采花者就没有financial incentive去弄花了，slightly strengthen）
D典型无关不解释


E（sales虽然没有被spurred，但是以前的sales部分还有revenue，然后采花者不用去野外采了直接在自己培养就掠夺更多的这种东东以更低的成本，成本降低利润升高无限incentive继续培养这个野花...良性循环有木有啊）

秋晨小仔

这是个plan-goal类型的题。

evidence：稀有野花很少，又不好人工养殖，所以卖花的就从野外采。
plan：不宣传稀有野花了
goal：是不让卖花的去采摘这些花了。
题目要求你指出plan的不可行。
也就是你要解释这样一个问题：即使你不宣传了，我还是会去摘野花。E就很好说明了原因：我摘野花才有钱（联系结论），我有钱了才能去开发新的技术让我能人工种植出这些野花，我种出来了就不再那么difficult to propagate了（到这里，很好的与题目中的stimulus联系在了一起，多么完美的答案！）
不知道你懂没。。。