已知命题p：∃x0∈R，2x0=1．则￢p是( ) A．∀x0∈R，2x0≠1 发布时间：2017-04-17 17:48 │ 来源：www.tikuol.com 题型：选择题 问题： 已知命题p：∃x0∈R，2x0=1．则￢p是( )A．∀x0∈R，2x0≠1 B．∀x0∉R，2x0≠1 C．∃x0∈R，2x0≠1 D．∃x0∉R，2x0≠1
题型：选择题 从下面方框内所给的七个选项中选出五个句子，将其序号填入相应空白处，使对话完整通顺。 A: You don't look well. What's the matter? B: 1________________________________ A: Oh dear! Why don't you go to bed for a rest? B: 2________________________________ A: Shall I call him and tell him you're ill? B: 3________________________________ A: OK. I'll do that. I'm going to the shop now. Can I get you some medicine? B: 4________________________________ A: Yes, of course. Is there anything else I can do? B: 5________________________________ A: See you later then. Take care! A. Oh, yes, please. His number is in the phone book. B. No, I'll be all right. Thanks for your help. C. My head hurts and I feel really hot. D. Could you buy me a box of cold pills, please? E. It doesn't hurt very much. F. I can't. I will play ping-pong with our teacher this afternoon. G. Do you think it's a good idea? 查看答案