GMAT考试的解释题答题技巧分享

　　解释题，又称explain题目。通常需要对GMAT逻辑题目的某一个部分做出合理解释。就是选出正确选项能够解释文章中给出的现象或者矛盾。解释题在GMAT逻辑题目中考察的比例有所增加，其重要性日渐凸显，同学们应该给予足够的耐心。
　　标志性词语：explain、reason、account for.本文就把GMAT逻辑解释题解题思路给大家介绍下，希望提高大家的GMAT逻辑推理能力。
　　一、GMAT逻辑解释题的答案形式
　　Explain/Solve the Discrepancy及填空题解题原则：定义结论句之因果关系，并确认议题焦点。
　　1、题目中有矛盾现象者：通常有转折字眼(极少数情况中无转折字，但句意上仍可找出矛盾处)。
　　1)找出矛盾句后出现的因果关系(因果之间会有矛盾)。
　　2)定义因--->预期果(预期结论通常与题目中的结果是相反状况)。
　　正确答案：否定预期果。
　　错误答案：削弱了答案。
　　2、题目中无矛盾现象者：视为Assumption类型来做。
　　1)题目中可辨识因果关系(结论句)者，找否定Weaken的答案。
　　2)题目中有跳跃结果者，找找补缺口的答案。
　　3、找出题目--->结论--->答案间可连结的关系。
　　4)题目--->结论间出现的新元素，要在答案中可找到。
　　3、Some Tips：Explain题中若无矛盾现象，较多为填补缺口类型。
　　二、GMAT逻辑解释题解题技巧：
　　1、找出A, however B,将however看作therefore,解释时思考整体
　　2、解释的对象是两者比较：正确选项必须体现此相对量
　　3、解释的对象再说上升下降，正确选项必须体现变化
　　三、GMAT逻辑解释题真题解析
　　例题：OG13-P5010-6 Parland's alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased. Which of the following, if true, most helps to explain the decline in the population of the fish species?
　　(A) The decline in the alligator population has meant that fishers can work in some parts of lakes and rivers that were formerly too dangerous.
　　(B) Over the last few years, Parland's commercial fishing enterprises have increased the number of fishing boats they use.
　　(C) The main predator of these fish is another species of fish on which alligators also prey.
　　(D) Many Parlanders who hunt alligators do so because of the high market price of alligator skins, not because of the threat alligators pose to the fish population.
　　(E) In several neighboring countries through which Parland's rivers also flow, alligators are at risk of extinction as a result of extensive hunting.

　　解析：题目：P地鳄鱼数量近几年一直在下降，主要由于对鳄鱼的猎杀。而鳄鱼喜欢捕食的淡水鱼是P地居民所喜爱的食物，那么P地居民就希望鳄鱼数量的减少能带来淡水鱼数量上升这个结果。但是淡水鱼数量也减少了，还是在当地居民没有增加淡水鱼消费量的情况下。
　　题干：解释鱼群数量下降这个现象。
　　A选项说鳄鱼数量下降会使得渔民可以在之前危险的地方进行作业，题目中已经排除了人为因素对鱼群数量的影响，不能忽视或者否定原文给定的信息。
　　B选项说P地的渔业企业增加了捕鱼船的数量，跟A选项问题一样。
　　C选项说鳄鱼不仅仅吃淡水鱼，同时也吃另一种喜欢捕食淡水鱼的物种，那么鳄鱼数量减少，这里所说的另一种喜欢捕食淡水鱼的物种数量会上升，能够导致淡水鱼数量下降这个结果。正确!
　　D选项讨论为什么要捕杀鳄鱼，与题目论点无关。
　　E选项说邻国鳄鱼濒临灭绝，None of our business…