根据语境，用恰当的语言完成对话。

A: Excuse me, I am a reporter from a student magazine. 小题1:__________________     ？

B: Sure, please.

A: 小题2:_________________________________       ?

B: I am from Germany.

A: 小题3:_______________________________ ?

B: I got here the day before yesterday.

A: How do you like Lanzhou?

B: I like your city very much. The people here are very friendly. But I’m still not used to the weather here. I have a sore throat today.

A: The weather in Lanzhou is kind of dry. Drinking more water can make you feel better.

B:  Thanks for your suggestion.

A小题4:________________________________?

B: Of course not. I come here for watching Lanzhou International Marathon. And then I’m planning to go to Dunhuang for a tour.

A: Great. Thank you for answering my questions. 小题5:____________________      !

B: Thank you.

某含氧有机化合物可以作为无铅汽油的抗爆震剂，它的相对分子质量为88.0，含C的质量分数为68.2%，含H的质量分数为13.6%，红外光谱和核磁共振氢谱显示该分子中有4个甲基。请写出其结构简式。