下列全称命题中是假命题的是______. ①2x+1是整数(x∈R); ②对所有 发布时间:2017-04-18 12:25 │ 来源:www.tikuol.com 题型:解答题 问题: 下列全称命题中是假命题的是______.①2x+1是整数(x∈R);②对所有的x∈R,x>3;③对任意的x∈Z,2x2+1为奇数.
题型:解答题 Would you like to go to a concert this evening?()A.OK. Let's go.B.You are welcomeC.But I have nothing else to do.D.Not bad. 查看答案