气瓶壁有裂纹、渗漏或明显变形的应（） A.修复 B.补焊 C.报废

A: What a nice day today!
B: Yes, you are right.
A:    1   
B: I am going to the nature park.
A: Sounds great.    2   
B: I am going fishing with my father.
A:    3   
B: We often have an outing in our own car.
A:    4   
B: Because it can save us a lot of time to do other things.
A: Thanks for telling me so much
B: That's all right.