题型:问答题 简答题 I like the Internet because I can____my friends and make a lot of new friends online. [ ]A. sing with B. go with C. chat with D. argue with 查看答案
题型:问答题 简答题 现有MgCl2、AlCl3、CuCl2、FeCl3、NH4Cl五种溶液,如果只用一种试剂把它们鉴别开来,应选用的试剂是( )A.浓NaOH溶液B.AgNO3溶液C.氨水D.NaCl溶液 查看答案