鉴于GMAT逻辑演绎题的重要性，今天小编继续为大家讲解演绎题的另一种题型——评价题，大家可以结合前面两篇文章中小编讲解的削弱题和加强题一起攻克。
一、GMAT逻辑评价题分析
1、GMAT逻辑评价题背景分析。
演绎文章存在一个最主要的“原因和结论”——评价题/假设题/加强题/评价题都使用“演绎文章”。演绎文章的描述问题的方法有两种：原因推出结论(AB型)和结论揭示原因/现象解释(BA型)。
2、GMAT逻辑评价题基础知识。
1、评价题的定义。
评价题是需要同学们选出选项对原文结论进行评价，也就是说，正确答案是决定文章结论能否成立的关键。
2、评价题的标志：
1)标志词： evaluate, determine, whether.……
2)典型问法:
Which of the following would it be most useful to determine in order to evaluate the argument?
The answer to which of the following questions would be most important in determining whether implementing the proposal would be likely to achieve the desired result?
In assessing the plan’s chances of achieving its aim, it would be most useful to know which of the following?
(详情请看 GMAT逻辑评价题综述)
二、GMAT逻辑评价题考察形式分类
评价题的做题顺序：
1、对每个选项回答YES。
2、判断选项是否对 “文章”有“削弱”或“加强”。
3、再回答no,看其是否有相反的作用。
注意：一定是yes and no回答都起到作用，如果仅仅一方面回答起到作用，则不是评价。
(详情请看 GMAT逻辑评价题图解分析法)
三、GMAT逻辑评价题例题分析
Traverton’s city council wants to minimize the city’s average yearly expenditures on its traffic signal lights and so is considering replacing the incandescent bulbs currently in use with arrays of light-emitting diodes (LEDs) as the incandescent bulbs burn out. Compared to incandescent bulbs, LED arrays consume significantly less energy and cost no more to purchase. Moreover, the costs associated with the conversion of existing fixtures so as to accept LED arrays would be minimal.
Which of the following would it be most useful to know in determining whether switching to LED arrays would be likely to help minimize Traverton’s yearly maintenance costs?
(A) Whether the expected service life of LED arrays is at least as long as that of the currently used incandescent bulbs.
(B) Whether any cities have switched from incandescent lights in their traffic signals to lighting elements other than LED arrays.
(C) Whether the company from which Traverton currently buys incandescent bulbs for traffic signals also sells LED arrays.
(D) Whether Traverton’s city council plans to increase the number of traffic signal lights in Traverton.
(E) Whether the crews that currently replace incandescent bulbs in Traverton’s traffic signals know how to convert the existing fixtures so as to accept LED arrays.
例题分析：
1、题目类型：解决方案。
问题：T城市的委员会想减少交通灯的每年耗费。
方案：把现有的IB换成LED。
2、正确选项：第一项。
LED寿命是否比IB长?如果LED的使用寿命比IB的使用寿命长则加强的方案的实施;反之，如果LED的使用寿命比incandescent bulbs的使用寿命短，则削弱方案的实施。
3、其它选项：
第二项：其他城市是否选用白炽灯对方案的实施无影响
第三项：原来公司没卖可以去其他公司买，对方案的实施无影响。
第四项：T城的委员会是否计划增加交通灯?交通灯的数量的变化对方案的实施无影响。
第五项：以前换灯的工人是否知道怎么把IB换成LED?这也是无关方案实施的选项。
(详情请看 GMAT逻辑OG13逻辑第10题)
关于GMAT逻辑评价题的解题方法前程百利小编讲解的可能不是很详细，实际上评价题是削弱题和加强题两种题型的综合体，体会好前面两种题型，相信评价题也不在话下。
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