（） I （） making my breakfast,my brother （） listening to the radio用was,were,when,while填空

I'm making my （） I （） making my breakfast,my brother （） listening to the radio用was,were,when,while填空 铁铵矾指示剂法测定对象为下列哪组物质时误差较小（ ）A Br-、I- 、Cl- B Br-、I- C Br- 、Cl- D I- 、Cl- 用氯水,四氯化碳检验Cl-,Br-,I-(写出现象,化学方程式） Br和I（离子）哪个先与Cl2反应 My mother is making the bed.(对画线部分提问）is making the bed画线 My uncle likes（）.选择 A 、make things B、making things C、making thing i'm just making my way through my email I learned a lot by making things（翻译） I have always been interested in making things.When I was a child,I enjoyed painting (绘画),but I also liked making things out of clay (粘土).I won a prize（奖）for one of my paintings when I was fourteen.That may be why I went to art school f Br酸(化学式）Br酸的化学式 i just finished making my last movie（划线）yesterday.(就划线部分提问）（）（）you just（）（）yesterday? just i making last my finished movie连词成句 I am making a birthday card for my I am making a birthday for my mother I making a card for my mather是什么意思 甲乙丙三种溶液各含有一种X（X为CL BR I ）向甲中加入淀粉溶液和CL2水则溶液变为橙色再加丙溶液颜色无明显变化则甲乙丙依次含有A BR CL I B BR I CL C I BR CL DCL I NR 一载有电流I的细导线分别均匀密绕在半径为R和r的长直圆筒上形成两个螺线管（R=2r）.两螺线管单位长度上的匝数相等,两螺线管的磁感应强度大小BR和Br应满足（一）BR=2Br（二）BR=Br（三）BR=B