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[主观题]
Consider the following statements. When do we say Statement A entails Statement B? When do
we say Statement A presupposes Statement B? Does Statement A necessarily entail Statement C? Why? Do Statements A and D both presuppose Statement B? Why?(南京大学2008研) A. Jacks brother has gone bankrupt. B. Jack has a brother. C. Jacks sibling has gone bankrupt. D. Jacks brother has not gone bankrupt.
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