乘____机（chénɡ  chèn）     尊____重（zūn  zhūn）      为难____（nán  nàn）

敝____国（bǐ  bì）          拱____手（ɡǒnɡ  ɡōnɡ）     耻辱____（wǔ   rǔ）

选词填空阅读下面短文，从方框中选择单词，根据实际情况用其适当形式填空，使短文意思完整、通顺。每空一词，每词只能用一次。

 A man was tired of living in his small house in the country.  He wanted to sell it and buy a ____  one than the old one nearby. He tried to sell it for a long time, but____ wanted to buy it. So at last, he decided to use a house salesman. The salesman soon put a picture of the man's house on a magazine. ____  days later, the owner saw a very beautiful picture of the house, with a wonderful introduction to its gardens, on a magazine. After the house owner had read ____ the whole introduction, he at once called up the salesman and said,“I'm sorry, but I've decided not to sell this house after all. After ____  your introduction, now I know that It's just the kind of house I'm going to live in for the rest of my life.

唐朝是我国历史上最繁荣与开放的朝代，它不仅有开放的对外政策，还有开明的民族政策。下列哪一历史事件体现了“开明的民族政策” (    )