题目内容：

假设你是红星中学高二（1）班学生李华。请你根据以下四幅图的先后顺序，给21世纪英文报写一封稿件，介绍上周你班同学参观北京市规划展览馆（Beijing Planning Exhibition Hall）的全过程。

注意：同数不少于60；

提示如：沙盘 urban planning model 讲解员 docent

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