题目内容：

假如昨天下午全校师生进行了一次地震逃生演练（a practice of escaping from an earthquake）。请展开合理想象，写一篇短文介绍这次演练的情况。不少于60词。

提示词：under the desk, cover the head, run out, one after another (一个接一个), walk on the right down the stairs (楼梯), get to (到达)。

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