题目

There are so many models on sale that I don't know which one to choose.There are so many models on sale that I don't know which one to . 答案：【1】pick【2】out11．下列是某同学对相应反应的离子方程式所作的评价，其中评价合理的是（　　）选项化学反应离子方程式评价A碳酸钙与醋酸反应CO32-+2CH3COOH═CO2↑+H2O+2CH3COO-错误，碳酸钙是弱电解质，不应写成离子形式B等物质的量的FeBr2和Cl2反应2Fe2++2Br-+2Cl2═2Fe3++Br2+4Cl-正确C苯酚钠溶液中通入少量CO2C6H5O-+CO2+H2O→C6H5OH+HCO3-错误，通入少量CO2应生成CO32-D向碳酸氢钙溶液中加入足量的氢氧化钠溶液HCO3-+Ca2++OH-═CaCO3↓+H2O正确A．AB．BC．CD．D