第1个回答 2007-04-02
1. historically important events
2. one of the most important things
3. hear about the news
4. ask somebody to do something
5. take place
6. broken down
7. the first Chinese astronaut
8. a national hero
9. for example/ for instance
10. in the history of modern US
11. daily activity
12. in silence
13. recently
14. first walk on the moon
15. continuous for 22 hours/go on for 22 hours
16. all the world