单选题What's the relationship between "John's uncle bought a new car yesterday" and "John has an uncle"?
A． Entailmen
B． Contradictio
C． Tautolog
D． Presuppositio
参考答案D
解析:预设是推理中认定的前提，是靠逻辑概念、语义、语境等推断出来的话语的先决条件。“约翰的叔叔昨天买了一辆新车”这句话预设了“约翰有叔叔”。
