题目内容：
根据下面对话，回答题。 
A：The weather in Lanzhou is kind of dry．Drinking more water can make you feel better．
B：Thanks for your suggestion．
A：___3___
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．___4___
B：Thank you．
第1题________ A．Would you mind telling me what you come here for?
B．Have a great time．
C．May I ask you some questions?
D．When did you arrive in Lanzhou?
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答案解析：