逻辑JJ，来帮我分析一下这道题目里的逻辑，有点混乱。。。

pollotosin · 发表于 2012-1-16 18:21:49

59、【杂志植物】 一本杂志发现刊登了植物照片或者介绍之类的以后，读者就会去购买这种植物。有些珍稀野生植物因为难以培育，卖这种植物的人就要从野外采摘。为了减少这种采摘，这家杂志决定不再刊登这些植物的内容了。问support. By zhangxiru2006 考古：prep 92  感谢鲤鱼迎门 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 halt this yearly plundering of our native plant populations. Which of the following, if true, casts the most doubt on the wisdom of 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 discouraged from buying those varieties again. B. Plant sellers who sell rare wildflowers have no reasonably inexpensive alternative way to offer their wares directly to new gardeners. 问加强 C. The demand for rare wildflowers rarely exceeds the number of such plants that can be collected in the wild by plant sellers. D. The propagation of rare wildflowers often depends on the plants' interaction with other organisms in their environment, such as plants that create suitable soil conditions or insects and birds that disperse seeds. 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 in nurseries. 问削弱 问削弱理解的，问加强不理解。。。