标题: 这典型题，为何不选C呀？ [打印本页] 作者: frankzhiwei 时间: 2010-11-18 22:50 标题: 这典型题，为何不选C呀？ Editor: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.
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.
为何不选C，却是E呀·！？？？？求解答~ 作者: jake1 时间: 2010-11-18 23:22
C项的情况可能就算成立，也不一定能达到保护野花的程度。再说如果C成立，本来野花就没有被破坏，那个杂志社干嘛还费劲改变呢？ E项让措施没有达到目的（保护野花），因此削弱了结论。这个题的措施目的不是很直接，一般题目都是最直接的目的达不到就行了。作者: kevin0214 时间: 2010-11-18 23:33
C项，无关 E项，出售珍稀植物的收益可以用来支持对珍稀物种的低成本培育的研究，那就可以不用防止消费者购买珍稀植物了。作者: sdcar2010 时间: 2010-11-19 01:52
Rarely means not often, infrequently instead of NEVER.