题目内容

用真值表方法判断下列公式的类型。(1)(p∧q)∧¬(pVq)(2)(p→q)↔(¬p↔q)(3)((p→q)∧(q→r))→(p→r)

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3. The author’s hometown is_____?

A. New Orleans
B. New York
C. San Francisco
D. Seattle

4. The reason that many young people are drawn to New York is _____.

A. self-testing
B. job chances
C. metropolitan entertainment
D. freedom

New York remains dominant at least in two fields. They are _____.

A. banking & ad
B. banking & communications
C. politics & entertainment
D. education & banking

在保持本我的状态下表现另一个个体的心理及行为的活动是指()。

A. 扮演
B. 戏剧
C. 表演
D. 模仿