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Plant scientists have been able to genetically engineer vegetable seeds to produce crops that are highly resistant to insect damage. Although these seeds currently cost more than conventional seeds, their cost is likely to decline. Moreover, farmers planting them can use far less pesticide, and most consumers prefer vegetables grown with less pesticide, therefore, for crops for which these seeds can be developed, their use is likely to become the norm.

which of the following would be most useful to know in evaluating the argument above?

正确答案: D

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真题 又一道 - B or D?

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楼主
发表于 2005-6-12 18:21:00 | 只看该作者

真题 又一道 - B or D?

有争议的另一道题,B or D? 我选D



Plant scientists have been able to genetically engineer vegetable seeds to produce crops that are highly resistant to insect damage. Although these seeds currently cost more than conventional seeds, their cost is likely to decline. Moreover, farmers planting them can use far less pesticide, and most consumers prefer vegetables grown with less pesticide, therefore, for crops for which these seeds can be developed, their use is likely to become to norm.



Which of the following would be most useful to know in evaluating the


argument above?



A)       Whether plant scientists have developed insect-resistant seeds for every crop that is currently grown commercially



B)       Whether farmers typically use agricultural pesticides in larger amounts than is necessary to prevent crop damage



C)       whether plants grown from the new genetically engineered seeds can be kept completely free of insect damage.



D)       Whether seeds genetically engineered to produce insect-resistant crops generate significantly lower per acre crop yields than do currently used seeds.



E)       Whether most varieties of crops currently grown commercially have greater natural resistance to insect damage than did similar varieties in the past.

沙发
发表于 2005-6-12 18:28:00 | 只看该作者

MM,你可以在坛子搜索一下吗?如果是GWD的真题也许已经有人讨论过了~~~~


其实这样效率高,因为你不需要等待别人的回复就可以得到满意的答复,你说是吗?~~


谢谢对CD的支持~~~

板凳
 楼主| 发表于 2005-6-12 18:38:00 | 只看该作者

我的想法是:


题目说:科学家已经可以培育出一种种子,它们有很高的抗虫害性。虽然这些种子的成本比较高,但它们很可能会降价。而且,农民用这种种子可以少用很多杀虫剂(从而省些这笔开支);而且消费者也更喜欢绿色环保含较少杀虫剂的蔬菜(暗示这种种子培育出的蔬菜会有好销量,能使农民收入有保证)。综上所述,这些种子很可能被广泛推广。


D说:(这种新种子是不是每亩的收成比现在的种子低很多,也就是说,如果播种下去同样多的旧种子和新种子,虽然新种子有其他方面的优势,但如果它的亩产量很低的话,它的投入产出比就低,就不利于广泛普及,不划算。)


而B我觉得不知所云

地板
 楼主| 发表于 2005-6-12 18:40:00 | 只看该作者

是这样的,这题好像不是GWD13套里的,我也之前搜过了。据说好像是GWD小班那些真题里了。从朋友处借来的,不慎了解。不过,是真题应该不会错吧,我想。

5#
发表于 2005-6-13 03:47:00 | 只看该作者

题目说这种基因技术可以减少使用杀虫剂。所以,如果现在的农民已经很少用杀虫剂了(比如滴滴涕),那这种基因技术的优势是不是就没有了。


可是俺觉得D也对

6#
 楼主| 发表于 2005-6-13 09:04:00 | 只看该作者

但那种基因技术的优势不止绿色环保一条呀,新技术的优势包括:1技术领先,可以绿色环保 2可能降价 而其用以支持结论(有望推广)的真正原因是:基于以上两个优势而衍生出的核心优势:可以增加农民的收入(所以农民才愿意推广这新种子)。D是对新种子的核心优势即“增加收入”作判断,比B的对假设的两个小前提之一作判断要更convincing,不是嘛?

7#
发表于 2005-6-13 13:23:00 | 只看该作者

你这核心优势是怎么总结出来的?看最后一句话,moreover....,therefore,...。如果标点没错的话,我觉得第2点是一个很重要的前提,而那个第一点吗,我想只是想说传统的和基因的在cost方面没有很大差别。

8#
发表于 2005-6-13 13:41:00 | 只看该作者
D,谁会买种不出东西的种子?
9#
发表于 2005-6-13 15:40:00 | 只看该作者

难道答案是B??????


请问楼主,标准答案是什么?


[此贴子已经被作者于2005-6-13 15:46:05编辑过]
10#
发表于 2005-6-13 16:43:00 | 只看该作者

我好像在哪里见过类似的题目,但那题只和经济因素有关...判断农民是赚是亏...


这题应该是D

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