假如你是一名导游,陪同某国际旅游团游览长城

Here we are at the foot of the Great Wall. It is the longest wall in the world and has a historyof over 2000 years. It is one of the wonders of the world. We'll stay here for two hours and a half,that is to say, we'll leave at 11 o'clock. The bus will be waiting for us at the entrance. Please remember our bus number and be back on time. Besides, please take your valuable things with you and shut all the windows before you get off. Be careful while you are on the Great Wall. Have a good time!