【段3】①Curbs on business-method claims would be a dramatic about-face, because it was the Federal Circuit itself that introduced such patents with its 1998 decision in the so-called State Street Bank case...
The word “about-face” (Para. 3) most probably means
[A]loss of goodwill.
[B]increase of hostility.
[C]change of attitude.
[D]enhancement of dignity.
答案：C
问：如下哪个选项不能用来解释about-face的意思？
A : characteristic of attitude
B : change of attitude
C : reversal of attitude
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