问题
选择题
若p是真命题，q是假命题，则（ ）
A．p∧q是真命题
B．p∨q是假命题
C．﹁p是真命题
D．﹁q是真命题
答案
∵p是真命题，q是假命题，
∴p∧q是假命题，选项A错误；
p∨q是真命题，选项B错误；
￢p是假命题，选项C错误；
￢q是真命题，选项D正确．
故选D．
搜题请搜索小程序“爱下问搜题”
若p是真命题，q是假命题，则（ ）
A．p∧q是真命题
B．p∨q是假命题
C．﹁p是真命题
D．﹁q是真命题
∵p是真命题，q是假命题，
∴p∧q是假命题，选项A错误；
p∨q是真命题，选项B错误；
￢p是假命题，选项C错误；
￢q是真命题，选项D正确．
故选D．
从A—J选项中选出能填入空白处的最佳选项补全对话。（选项中有两项是多余的） W: Excuse me, sir. M: Yes, 小题1: W: I have been here for an hour to meet my father. 小题2:___ M: Are you sure of the time his flight arrives? W: 小题3:He told me he would reach the airport at about 1:00 this afternoon M: That’s true. 小题4: W: What? BA506? Well, I don’t think it’s his flight number. M: 小题5: W: Yes, it’s VA407. I think...Oh, just a minute, please. Here. 小题6:Sorry, it’s VA408. M: VA408? I see, madam, 小题7:but it will be two hours and twenty minutes late because of the bad weather in New York. W: OK. 小题8:Thank you very much ,sir. M: Good luck! Madam.
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