从方框内选出适当的选项完成对话，有两项是多余的。

A: Hello! Mr. Wang. 小题1:______  What are you doing?

B: I’m looking for a book called A Tale of Two Cities.

A: 小题2:_____________

B: That’s right. I’m thinking about asking some students to act a play about the book.

A: 小题3:___________ But I think that’s a bit hard for our students.

B: Well. 小题4:_____________ By the way, I hope you can be the hero of it.

A: Really? I’ll try my best.

B: OK. 小题5:_____________ Then I’ll give you one week to get ready.

转化停车过程中（）。

A、先进行氮气循环降温，再进行蒸汽钝化和蒸汽降温

B、转化气不能并入转化炉中做燃料气

C、蒸汽钝化结束，即可停锅炉给水系统

D、在蒸汽钝化降温过程中，当E3后烟气温度小于450℃，即可停工艺水系统