下图1显示了某种甲虫的两个种群基因库的动态变化过程。种群中每只甲虫都有相应的基因型，

请根据句意从方框中选择合适的单词，并用其适当形式填空，使句子通顺。

stomach     true       she      stress     Asia

1. China is one of the       countries in the world.
2. When feeling           , you can wear white.
3. Do you know that a bull has four           ?
4. To tell you the __________, I lost the present May give me yesterday.
5. She just wants to make ___________ look pretty.