在日常的交往、学习和工作中,逻辑用语是必不可少的工具,它也是高中数学的核心知识,同时也是高考的高频考点,且经常以选择题和填空题的形式出现,基本属于简单题或中档题,其中不乏经典题目,下面就解逻辑问题应体现的几种数学意识加以盘点,与广大同行交流.1.反证意识例1若命题“p■q”为真命题,则下列命题一定为真命题的是(). In daily communication, study and work, logical language is an indispensable tool, it is also the core knowledge of high school mathematics, but also high frequency test centers, and often in the form of multiple choice questions and fill in the blank, basic is simple Questions or mid-range questions, many of them classic topics, the following logic problems should be reflected in the interpretation of several mathematical knowledge to inventory, communicate with the majority of peers.1 Anti-card case 1 If the proposition p q The following proposition must be the true proposition is ().