Step 1 Read and complete（基础性作业）
同学们参加校园安全体验活动，一起观看了急救宣传片。读一读，在“故事山”的横线上填写正确的字母编号。

A. First, his friend Linlin called the school doctor.
B. The school doctor arrived soon.
C. Finally, Lele was resting at home.
D. Lele hurt his feet and couldn’t stand up.
E. Next, she checked his ankle and put ice on it.

1. D 2. A 3. B 4. E 5. C

Step 2 Read and order（拓展性作业）
李明还没有独自一人乘坐过地铁，同学们给他写了一份乘坐指南，但顺序被打乱了，请帮他将以下句子排序吧。
How to take the underground safely?
1. Wait for the train behind the yellow line.
2. Walk into the underground station carefully.
3. Let people get off the train first.
4. Get off the train carefully.
5. Hold the handrail on the train.

2, 1, 3, 5, 4