-- How are you getting on with your work ? ---Oh, well. Things are going so well as __________.

题干

-- How are you getting on with your work ?
---Oh, well. Things are going so well as __________.

A：pla

B：planning

C：planned

D：to pla

上一题下一题 0.0难度选择题更新时间:2018-06-05 08:51:01

C

	实验事实	结论
①	将等浓度的盐酸、碳酸氢钠两溶液混合反应，产生CO₂气体	非金属性：Cl＞C
②	将燃烧的镁条放入CO₂中能继续燃烧，产物有C	还原性：Mg＞C
③	MgCl₂、AlCl₃溶液中分别加入过量氨水，均产生白色沉淀	金属性：Mg＞Al
④	某无色溶液中加入氢氧化钠溶液并加热，产生的气体能使湿润红色石蕊试纸变蓝	该溶液中一定有NH₄⁺