考考你的翻译水平：试将下列句子翻译成中文

1. Her face was an open book.
2. It's a sealed book to me.
3. She is a book-keeper.       
4. All the officers should open their books.
5. Ration books insured that all the citizens could receive at least enough food for living.

谢谢斑竹捧场，诚邀更多的版友加入。当然如果我的考元很多的话，我就会给参与者发红包（虚拟语气）。
我这儿还有一个作文题目愿意与版友一起交流（当然更需要斑竹支持）：
        What can we learn from the Olympics?

1，她喜怒皆形于色
2，这对我而言简直是天书
3，她是个图书管理员（这个不是很清楚）
4，所有的官员都该坦率诚实
5，配给制至少能保证所有市民的基本口粮