单选题 Sasha: Handwriting analysis should be banned in court as evidence of a person's character: handwriting analysis called as witnesses habitually exaggerate the reliability of their analyses.
Gregory: You are right that the current use of handwriting analysis as evidence is problematic. But this problem exists only because there is no licensing board to set professional standards and thus deter irresponsible analysts from making exaggerated claims. When such a board is established, however, handwriting analysis by licensed practitioners will be a legitimate courtroom tool for character assessment.
Gregory does which one of the following in responding to Sasha's argument?

A、 He ignores evidence introduced as support for Sasha's recommendation.
B、 He defends a principle by restricting the class to which it is to be applied.
C、 He abstracts a general principle from specific evidence.
D、 He identifies as self-contradictory statement in Sash's argument.
E、 (E) He shows that Sasha's argument itself manifests the undesirable characteristic that it condemns.

【正确答案】 B

【答案解析】[解析] 本题属逻辑应用与技巧题。Gregory在应答Shasha时首先承认笔迹分析存在的问题，然后指出问题起因，接下来提出了一个消除这些问题的办法，最后下结论认为笔迹分析在他提出的这一方法的作用下将会变得有效，由此分析可知(B)为正确答案。