New Words：

nation [ˈneɪʃn] 国家;民族;国民
national [ˈnæʃnəl] 国家的;民族的
National Day 国庆节

Sample Sentences：

China is a very old nation.
Pandas are the treasures of our nation!
We are a great nation, the leader of the world.

Happy National Day to all of you!
What are the colors of our national flag?
Today is National Day. It was a fine day for going out.

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