电子课本网 第213页

第213页

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excited
finally
xample
He was a governor and a water engineer.
Because he needed ships to send food to his army.
Eight years.
Li Bing's work helped the local people a lot.
He was clever and hard-working.
When the drill began, the teachers told us to calm down first. 
Then, they led us to leave the classroom one by one. All the students helped each other on the way. At last, we
reached the playground safely. 

For example, we should keep ourselves away from windows or pictures on the wall. They may 
fall down and hurt us. We can hide under a strong desk or table to protect ourselves. 


these activities are very interesting and useful for us. We can learn a lot of knowledge about 
earthquakes and how to save ourselves in an earthquake.