特殊词汇
考研阅读试题中经常考查考生对于一些词语和词汇的理解，这些特殊词汇包括了平时不经常使用的生僻词、常见词语平时不经常用到的意思或搭配、以及关系代词等。这类题目的解题关键在于读懂词汇所在文章位置的前后句及上下文，从而推断中其意思。
【试题回放2010-Text2】
Curbs on business-method claims would be a dramatic about-face, because it was the federal circuit itself that introduced such patents with is 1998 decision in the so-called state Street Bank case, approving a patent on a way of pooling mutual-fund assets. That ruling produced an explosion in business-method patent filings, initially by emerging internet companies trying to stake out exclusive rights to specific types of online transactions. Later, move established companies raced to add such patents to their files, if only as a defensive move against rivals that might beat them to the punch. In 2005, IBM noted in a court filing that it had been issued more than 300 business-method patents despite the fact that it questioned the legal basis for granting them. Similarly, some Wall Street investment films armed themselves with patents for financial products, even as they took positions in court cases opposing the practice.
28. The word “about-face” (Line 1, Para 3) most probably means
[A] loss of good will
[B] increase of hostility
[C] change of attitude
[D] enhancement of dignity
