题干
--- Sorry, I made a mistake again.
--- __________. As long as you practise more, you will succeed one day.
--- __________. As long as you practise more, you will succeed one day.
A：Never mind
B：Certainly not
C：Out of the questio
D：Don’t mention it
答案(点此获取答案解析）
A
”表示氢原子，用“ 
”表示氧原子，用“ 
”表示硫原子，上述反应过程可用如图2表示．该反应的化学方程式为