从方框内选择正确选项，并把字母序号写在对话后面的横线上。(方框中有一个是多余的选项）

A. What is the longest river in Jilin? B. It is higher than any other mountain in Jilin. C. Where is the most beautiful place in Changchun? D. I'm happy to meet you. E. Did you know that Changchun is one of the biggest cities in China? F. What can you do for me?

A: Hi, I am Jack. I'm from the UK.

B: Welcome to Jilin, Jack.

A: Can you tell me a bit more about Jilin?

B: Sure!

A: Yes, I did. What's the highest mountain in Jilin?

B: Changbai Mountain!

A:

B: Songhuajiang! It is more than 1, 900 kilometers long.

A: Wow, I didn't know that.

B: Jingyuetan. It is much bigger than the South Lake Park.

A: Thank you.

B: You're welcome.