"Mike’s iPhone he just bought yesterday is expensive. " ______ "Mike has an iPhone. "

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问题 "Mike’s iPhone he just bought yesterday is expensive. " ______ "Mike has an iPhone. "

选项 A、is synonymous with
B、is inconsistent with
C、entails
D、presupposes

答案D

解析 句子之间主要存在以下四种意义关系:(1)X与Y同义(X is synonymous with Y):从真值条件的角度来看,如果X为真,Y就为真;如果X为假,那么Y也为假。(2)X与Y不一致(X is inconsistent with Y):如果X为真,Y就为假;如果X为假,Y就为真。(3)X蕴含Y(X entails Y/Y is an entailment of X):如果X为真,Y一定为真,例如,如果他去过北京,他就一定去过中国;如果X为假,Y有可能为真,有可能为假,例如,如果他没去过北京,他可能去过中国,也有可能没有去过。(4)X预设Y(Y是X的先决条件)[X presupposes Y/Y is a prerequisite of X]:如果X为真,Y一定为真,例如在本题中,迈克昨天买的iPhone昂贵,他一定拥有一台iPhone;如果X为假,Y仍然为真,例如,如果迈克的iPhone不昂贵,他还是拥有一台iPhone。所以本题选择D。
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