- UID
- 78083
- 在线时间
- 小时
- 注册时间
- 2005-3-1
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
再贴一个吧
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 accepta dvertisements praising the beauty of rare wildflowers. Most such plants sold to gardeners havebeen difficult to propagate under cultivation, so plant sellers often collect them in the wild. Ournew 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 asa 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 offertheir wares directly to new gardeners.
C. The demand for rare wildflowers rarely exceeds the number of such plants that can be collectedin 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 andbirds 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.
答案:E
题干分析:为了防止野生的珍贵植物数量被人为地降低,因此将会停止在杂志上刊登珍贵植物的文章。因为新手看到杂志上的文章就会想要购买这些植物,而这些珍贵植物又不易人工养殖,花店就会在野外采集这些珍稀植物,这样就会造成珍稀植物的。问削弱,
选项分析:
A 新手买植物的时候通常都会不能很好的照料这些植物,然后就会不愿意再买这些种类的植物了。这个选项跟题干没有关系嘛,无关选项。
B 卖野花的商家没有便宜的其他方法来把他们的商品买给新手。这个选项讲的是商家除了这杂志就没有做广告的方法了,那么题中的措施就可以控制新手购买稀有植物了,是加强选项。
C 对野花的需求量很少会超过能够在野地一采集到的野花的数量。我们讨论的是政策有没有用,所以这个是无关选项。
D 这种稀有植物的传宗接代一般都是需要靠小飞虫小鸟什么的,讲的是植物的特性,也是无关选项。
E 卖这些植物的钱都用来开发新的廉价的给这些珍稀花传粉的方法。如果没有这些收入,就会影响到传粉的研究,因此也会影响到这些花的数量。。削弱这个方案 |
|