1. 单词拼写。

结合语境，根据汉语或首字母提示用单词的适当形式填空。

1. （1） The dam (爆裂) under the weight of water.
3. （2） Although the world is full of (苦难), we don't fear it.
5. （3） Many people are reported killed and (受伤) in the incident.
7. （4） Life would be very difficult without (电).
9. （5） The whole city lay in (废墟) after the earthquake.
11. （6） Everybody on this earth needs food, s, and clothing.
13. （7） Every year natural's d can cause heavy loss to the world.
15. （8） Most of the buildings were completely d in the earthquake.
17. （9） Her head was b in the book when she was reading.
19. （10） The life boat was sent out to r the sailors from the sinking ship.