【简答题】交际用语: 32. A :
__2____ B:
I want to get a dictionary. Could you tell me what dictionary I should take?A. 2.
A. What do you want to buy? B. You want to buy a book, don’t you? C. What can I do for you? D...
【简答题】(11分)下图所涉及的物质均为中学化学中的常见物质,其中C为气体单质一种主要成分、D在常温下是黄绿色气体、E为Fe单质,其余为化合物。它们存在如下转化关系,反应中生成的水及次要产物均已略去。 (1)写出有关物质的化学式 F ,G ,H 。 (2)指出MnO 2 在相关反应中的作用,反应①中是 剂,反应②中是 剂。 (3)若反应①是在加热条件下进行,则A是 ;若反应①是在常温条件下进行,则A的电子式...
【简答题】A :_________2 _______ B:
I want to get a dictionary. Could you tell me what dictionary I should take?A. What do you want to buy? B. You
want to buy a book, don’t you ? C. What can I do for you ? D. Ho...
【简答题】(4分)现有下列4种物质:① NH 3 、② NO 2 、③Cl 2 、④NaHCO 3 溶液。其中,常温下为黄绿色气体是 (填序号,下同),能使湿润的红色石蕊试纸变蓝的气体是 ,红棕色的气体是 ,与盐酸反应能生成气体的溶液是 。
【单选题】I want that dictionary, would you please ________ it to me?