模态判断“□﹁p”与“◊p”（）
下列（）选项是推理有效的？
“唐朝总统是一个伟大的政治家”中的“唐朝总统 ”是（）
模态判断“□﹁p”与“◊p”（）
一个联言判断“﹁p∧q”为真，那么一定是（）
反证法先论证与原论题相矛盾的论断为假，然后得到原论题真，其所依据的是（）
题目
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模态判断之间的真假关系
“□﹁p”与“◊p”是矛盾关系，所以既不可以同真，也不可以同假。
多做几道
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- （）AissueBpassedCdebateDanotherE otherF internationalGrelatedH influenceIsawJprofessorKnationalLcomfortable
- （）AissueB passedCdebateDanotherEotherF internationalG relatedHinfluenceIsawJprofessorK nationalLcomfortable
- （）A issueBpassedC debateDanotherE otherFinternationalGrelatedHinfluenceIsawJprofessorKnationalLcomfortable
- （）AissueB passedCdebateDanotherEotherFinternationalGrelatedHinfluenceIsawJprofessorKnationalLcomfortable
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