GMAT逻辑题型练习（469）

2017-12-22 10:06

来源：新东方在线

作者：

　　GMAT逻辑题目内容

　　The tulu, a popular ornamental plant, does not reproduce naturally, and is only bred and sold by specialized horticultural companies. Unfortunately, the tulu is easily devastated by a contagious fungal rot. The government ministry plans to reassure worried gardeners by requiring all tulu plants to be tested for fungal rot before being sold. However, infected plants less than 30 weeks old have generally not built up enough fungal rot in their systems to be detected reliably. And many tulu plants are sold before they are 24 weeks old.

　　Which of the following, if performed by the ministry, could logically be expected to overcome the problem with their plan to test for the fungal rot?

　　A.Releasing a general announcement that tulu plants less than 30 weeks old cannot be effectively tested for fungal rot

　　B.Requiring all tulu plants less than 30 weeks old to be labeled as such

　　C.Researching possible ways to test tulu plants less than 24 weeks old for fungal rot

　　D.Ensuring that tulu plants not be sold before they are 30 weeks old

　　E.Quarantining all tulu plants from horticultural companies at which any case of fungal rot has been detected until those tulu plants can be tested for fungal rot

　　正确答案：D

　　GMAT逻辑题目解析

　　前提一有真菌的植物很容易翘

　　前提二 30周大的植物才可以检测真菌

　　前提三许多(=一部分)植物在24周大就卖掉了 = 一部分植物没有检测就卖掉了

　　conclusion：政府的措施可以让人放心，所有的植物在售卖前都经过检测了。

　　问加强

　　A 公告30周前的植物不能被检测自打耳光没有政府会这样做。

　　B 30周前的植物加标签还是没经过检测如何让人放心。

　　C 研究一种方法可以检测24周前的植物的真菌，可是现在缺少24周到30周的检测方法，还是不能让这一部分的植物经过一定的检测

　　D 30周前不准售卖。这样一来只要是出售的，就可以保证都经过检测了。无论这个方法多么awkward 逻辑上是完整的加强效果。

　　E哪些公司的植物出现过真菌就把这些公司的所有Tulu隔离开，直到30周送去检测。可是没有被检出真菌的公司还是可以把24周大未经检测的植物送进市场，这一部分还是未经检测。