二氧化碳和一氧化碳化学性质不同的原因是( ) A.二氧化碳的密度比一氧化碳的大 发布时间:2017-04-17 12:53 │ 来源:www.tikuol.com 题型:选择题 问题: 二氧化碳和一氧化碳化学性质不同的原因是( )A.二氧化碳的密度比一氧化碳的大B.分子构成不同C.一氧化碳难溶于水D.用途不同
题型:选择题 阅读材料:《史记夏本记》记载有以下一段话:“劳身焦思,居外十三年,过家门而不敢入”这段话描述是对谁的描述?请你分析一下他“不敢”入家门的原因是什么?______________________________________________________________________ 查看答案
题型:选择题 情景对话。从所给的选项中选择最佳项完成对话。A. Are you feeling better? B. Where shall we meet? C. What are you doing? D. I'm feeling better. E. Would you like to go with me? F. When shall we meet? John: Hello, Jim. This is John. 1 Jim: I'm staying in bed. I had a bad cold. John: I'm sorry to hear that. 2 Jim: Yes. My mother took me to the hospital. What's the matter? John: I got two tickets to Titanic this evening. 3 Jim: Yes, I'd like to. John: 4 Jim: Let's meet at half past six. John: 5 Jim: Let's meet at the school gate. John: OK. See you then. Jim: See you. 1. 2. 3. 4. 5. 查看答案