Ⅰ. 根据句意及汉语提示完成单词（10分）
1. Many houses were carried away in the ______（洪水）.
2. We can express our thoughts by ______（言语）.
3. We all know the dragon is the ______（象征）of China.
4. You can’t ______（想象）how beautiful the girl is.
5. The experience in ______（军队）is helpful to him.
