问题
选择题
若命题“￢p”与命题“p∨q”都是真命题，那么（ ）
A．命题p与命题q的真值相同
B．命题p一定是真命题
C．命题q不一定是真命题
D．命题q一定是真命题
答案
命题￢p是真命题，则p是假命题．
又命题pvq 是真命题，所以必有q是真命题．
故选D．
搜题请搜索小程序“爱下问搜题”
若命题“￢p”与命题“p∨q”都是真命题，那么（ ）
A．命题p与命题q的真值相同
B．命题p一定是真命题
C．命题q不一定是真命题
D．命题q一定是真命题
命题￢p是真命题，则p是假命题．
又命题pvq 是真命题，所以必有q是真命题．
故选D．
John was sad. Nothing could make him ."I don't want to go to school today." "Come on, sleepy head. We're going for a "said his mum. When they walked down the street, his mum said, "John, do you see in Mr. Butler's garden? Would you like to sniff(嗅)them? " "，said John. "But I want to. Come with me", His mum sniffed the flowers. "Oh, these roses me my son should be happy, and they also tell me my son should go to ." "Aha, mum, you are joking. How can roses ?" laughed John.. They walked on. "Maybe we can have a dog cat mouse chicken lamb ice cream cone," said his mum. John ."Don't be so silly(傻的),Mum. That sounds .You can't have that kind often cream cone." John kept smiling from that moment. Mum felt happy now that John was happy. John thanked his mum very much to make him .He thought his mum was great.
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