题型:填空题 There ____ lots of bad information that is not suitable for teenagers on the Internet.A.seem to beB.seems to have C.seem to haveD.seems to be 查看答案
题型:填空题 向100ml 2mol/L AlCl3溶液中加入了100ml某浓度的NaOH溶液,得到沉淀的质量是7.8g,则该NaOH溶液的物质的量浓度是[ ]A.1mol/LB.3mol/L C.5mol/L D.7mol/L 查看答案