题目内容

[音频]I have friends in the rank and file. Some are rich and in power. Some are low and . Some are like myself, working as a teacher, reading and writing and content with the simple life we have. To many of my friends, I know what to , what to tolerate and what to share.

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[音频]I will never forget my old friends and keep making new friends. I will not be cold and ___________ to the poor friends and will show concern for them, even if it is only a comforting word.

由p和q可构成不等值的命题公式共____。

对于若干个联结词组成的非空集合S,若任意的命题公式都可由仅含S中的联结词等值地表示出来,则称S为____。

设S是功能完备的联结词集,而S的任意非空真子集都不是功能完备的联结词集,则称S为____的功能完备的联结词集。