请大家来看看本月逻辑的一道机经题

mademperor

Articles in Gardening Magazine often spur sales of the plants they describe, particularly among people new to gardening. Accordingly, we will no longer publish articles or accept advertisements praising the beauty of rare wildflowers. Most such plants sold to gardeners have been difficult to propagate under cultivation, so plant sellers often collect them in the wild. Our new policy is part of our efforts to half this yearly plundering of our native plant populations.
Which of the following, if true, support the magazine's new policy as a way of pursuing the intended effect ?

(A) When people new to gardening buy plants, they often fail to take adequate care of the plants that they buy and become discourged from buying those varieties again. 这跟杂志推不推销没关系
(B) Plant sellers who sell rare wildflowers have no reasonably inexpensive alternate way to offer their wares directly to new gardens. 就因为野花的卖家没有其他更便宜的途径向买家推销野花，所以野花的销售数量会减少
(C) The demand for rare wildflowers rarely exceeds the number of such plants that can be collected in the wild by plant sellers. 这跟杂志推不推销没关系，野花的数量不会受到威胁
(D) The propagation of rare wildflowers often depends on the plant's interaction with other organisms in their environment such as plants that create suitable soil conditions or insects and birds that disperse seeds.偏题
(E) Revenues from sales of plants collected in the wild are supporting the discovery of new low-cost techniques enabling rare wildflowers to be readily propagated innurseries.这是反对杂志的新措施

个人觉得应该选B. 原因如下.

题目是说买家由于看了杂志，所以时常按杂志说推销的花类来购买。该杂志为了保护野花的生存，所以决定不再推销野花。题目是问哪一项能够支持该杂志的新措施。

x_fan

B是个无关，谁也没说便宜就多做宣传，贵了就不做，文章没有提到这个事
我觉得C对

mademperor

B是个无关，谁也没说便宜就多做宣传，贵了就不做，文章没有提到这个事
我觉得C对

-- by 会员 x_fan (2010/9/24 2:20:45)

问题是如果野花原来的需求量远远低于供应量，那就说明根本没有对野花的生存造成威胁，那也就不存在该杂志为了保护野花生存而采取的措施。所以C并不能支持该杂志的措施.

szfifizheng

B 就因为野花的卖家没有其他更便宜的途径向买家推销野花，所以野花的销售数量会减少  实际是因为需求先减少然后销售才会减少
C 直接提到需求

个人认为C是弥补了题干的gap，相当于assumption，这题貌似不能用因果型support来分析
如果平时野花的需求不会超过供给，但是杂志介绍使其使其需求增加从而导致乱採摘，因此no longer publish可以使其需求回复到正常水平。否则，如果即使平时野花的需求已经超过供给，就算no longer publish也还是会有人乱採摘。

mademperor

B 就因为野花的卖家没有其他更便宜的途径向买家推销野花，所以野花的销售数量会减少  实际是因为需求先减少然后销售才会减少
C 直接提到需求

个人认为C是弥补了题干的gap，相当于assumption，这题貌似不能用因果型support来分析
如果平时野花的需求不会超过供给，但是杂志介绍使其使其需求增加从而导致乱採摘，因此no longer publish可以使其需求回复到正常水平。否则，如果即使平时野花的需求已经超过供给，就算no longer publish也还是会有人乱採摘。

-- by 会员 szfifizheng (2010/9/24 2:33:36)

所以B是提供了该杂志的新措施可以使野花的销售量降低。这也是题目问的地方。而不是关不关心野花原来的需求量是否大于供应量

szfifizheng

但是这题又不是问assumption。。所以很纠结。。

mademperor

之所以题目并不是问的assumption而是问支持。所以B应该是对的，该选择直接支持杂志的新措施，- 降低对野花的需求量

szfifizheng

B的话也有问题
如果说是排除了可能导致结果的其他原因的话，也只是排除了1个，也就是价格，并不是所有原因，所以就算是support也很weak。。

mademperor

A,D,E都不靠谱，所以问题就在B和C之间。但我们应该注意到题目所问得主要事项，那就是该杂志的新措施是否会有效？有效=野花的销售量（需求量）降低了。

B虽然不完整但是对比其他的选择来看是最靠谱的。

szfifizheng

不知道捏~~
JJ里面还有N道题不确定呢。。为啥么没有工作组专门负责解决逻辑捏。。伤心。。