一、出题原理

解释矛盾题是一种在GRE考试中出现频率极小的题型。其出题结构是逻辑文章中含有一个矛盾点，即按大家的常规性理解事件一理应推出事件二，但结果却发生了与事件二方向相反的事件，要找一个选项解释“事件二的反面”发生的原因。

解释矛盾题、支持题、假设题有一个共同的特性：都承认文章中逻辑链的结论（conclusion）成立。

解释矛盾题也可以转换成削弱题，例如：

Nitrogen dioxide is a pollutant emitted by automobiles. Catalytic converters, devices designed to reduce nitrogen dioxide emissions, have been required in all new cars in Donia since 1993, and as a result, nitrogen dioxide emissions have been significantly reduced throughout most of the country. Yet although the proportion of new cars in Donia's capital city has always been comparatively high, nitrogen dioxide emissions there have showed only an insignificant decline since 1993.

Which of the following, if true, most helps to explain the insignificant decline in nitrogen dioxide emissions in Donia's capital city?

解读： 题干部分有explain、account for、discrepancy等词汇的即为解释矛盾题。此题的原文主要内容是：“别的地方二氧化氮下降很多，首都下降得不多”，要求从选项中找一个话题能解释为什么首都下降不多。

此题可以转换为“别的地方下降二氧化氮多→首都二氧化氮下降也多”，要削弱结论，即“首都下降二氧化氮不多”。 3fUFJpF0kU7rtSrzxHOEupKgO5AdeS7nJheXNLLh9XVUTqBlQ3CWAPbjY/9WGTck