【题目】给下列句子排序，组成一段完整的对话。
（____）It's more than twenty thousand kilometres long.
（____）Look! It's a picture of the Great Wall. Do you know it?
（____）It's in China.
（____）No, I don't. Tell me more about it. Where is the Great Wall?
（____）And how long is it?
【答案】5 1 3 2 4
【解析】
略
