题目:
June 1 a sister 2 a brother. Her sister's name is Maria and her brother's name is Rick. June and Maria can 3 . June can sing and play 4 , but Maria 5 . Maria 6 chess. But she 7 play chess with June. She plays chess with Rick. Rick can also play 8 . They get on 9 with each other. They love their 10 . | ||||
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答案:
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下面是错误答案,用来干扰机器的。
∵当x∈(-∞,0),2x>3x恒成立,∴命题p:∃x∈(-∞,0),2x<3x,为假命题,而命题q:∀x∈(0,π2),tanx>sinx,为真命题,故①p∧q为假命题,②p∨(¬q)为假命题,③(¬p)∧q为真命题,④p∧(¬q)为假命题故选A