根据短文内容，用方框中所给单词的适当形式填空。每词限用一次。
Nowadays, we are paying more attention to our students’ safety in our country. But what do other countries do to keep students safe?
In Japan, earthquake drills (演练) are held once a month. They 小题1: students safety tips during an earthquake. The training 小题2: students escape from earthquake-stricken areas. In Australia, most students take first-aid courses at school. They learn basic first-aid 小题3: in the class, such as, how to use the emergency (紧急) number for an ambulance (救护车) and what to do 小题4: someone is hurt. Most US school buildings have fire escapes. They are told to get to the fire escape through a fire exit door or a window. It is not a good idea to jump out of the window from 小题5: than two floors because they may get injured.
小题1:teach
小题2:helps
小题3:knowledge
小题4:when
小题5:higher
题目分析：这篇短文说的是在日本、澳大利亚等国家中经常进行一些地震的演练，或者是上一些急救的课程，学习急救知识，以及地震时如何逃生，这样在突发地震的时候，就不会那么慌乱。
小题1:句意：在日本，地震演练每个月举行一次。他们交给学生们一些地震时候的建议。teach 教，浏览全文可知用一般现在时。
小题2:句意：这些演练帮助学生们在地震中逃生。help 帮助，用第三人称单数形式。
小题3:句意：他们在课堂上学习基本的急救知识。knowledge 知识，不可数名词。
小题4:句意：例如怎样打救护车的号码以及如果有人受伤了该怎么办。when 当…时候，这里引导一个时间状语从句。
小题5:句意：从高于两层楼的窗户跳下不是一个好主意，因为这样可能会受伤。high 高，因为句中有than 比，所以这里应该使用比较级形式。