题干
A: Did you like ice creams? B: .
A：Yes, I didn't.
B：No, I didn't.
C：No, I did.
答案(点此获取答案解析）
B
A: Did you like ice creams? B: .
A：Yes, I didn't.
B：No, I didn't.
C：No, I did.
气体与足量Fe2(SO4)3溶液完全反应后，再加入K2Cr2O7溶液，发生如下两个化学反应：SO2＋2Fe3＋＋2H2O===SO
＋4H＋＋2Fe2＋，
＋6Fe2＋＋14H＋===2Cr3＋＋6Fe3＋＋7H2O。