题型:填空题 下列离子方程式书写正确的是( )A.饱和石灰水跟稀硝酸反应Ca(OH)2+2H+=Ca2++2H2OB.稀硫酸与锌反应:H2SO4+Zn=Zn2++SO42-+H2↑C.碳酸钙与盐酸反应:CO32-+2H+=CO2↑+H2OD.碳酸氢钠溶于醋酸溶液:HCO3-+CH3COOH=CH3COO-+H2O+CO2↑ 查看答案
题型:填空题 单词辨音,找出划线部分读音不同的一项(每小题1分,共5分)小题1:A. grow B. well-known C. now小题2:A. pilot B. engineer C. rich小题3:A. save B. travel C. lady小题4:A. dream B. exercise C. meat小题5:A. have B. as C. about 查看答案