单选题
Some people are skeptical about the
validity
of Aristotle's argument that man is by nature a political animal.
A. efficiency B. soundness C. availability D. contribution
A
B
C
D
【正确答案】
B
【答案解析】
validity：有效性，合理；efficiency：效率；soundness：健全，良好状态，合理；availability：可得性，是否能搞到；contribution：贡献，撰稿，捐献
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