题干
---I’m sorry I’m late. I got held up in the traffic on my way here.
---___________________.
A：Don’t be late next time
B：You should be blamed
C：It doesn’t matter. I’m also late
D：Never mind. Come and sit dow
答案(点此获取答案解析）
D
、CuO)共5.76 g,经如下处理：