六、状语从句：
1. We must keep up with the development of the world’s leading enterprises before we can keep pace with the changing of the international situations.  

2. After people have learned that magnets attract things, centuries passed before they took note of the fact that magnets sometimes also repel things. 

3. While the general public tend to agree that animals should be treated humanely, most people are unlikely to give up eating meat or wearing goods made from leather and wool.

4. While there are almost as many definitions of history as there are historians, modern practice most closely conforms to one that sees history as the attempt to recreate and explain the significant events of the past.

5. Backward somewhat technologically as we are for the moment, we have perfect faith in our ability to catch up in time.

6．Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary article physics and many astrophysicists have been convinced for the better part of a decade that it is true.    
宇宙膨胀说虽然听似奇特，但是它是基本粒子物理学中一些公认的理论产生的在科学上看来似乎可信的结论。许多天体物理学家近十年来一直确信这一论说是正确的。

7．A very few courses are restricted to people already working in a profession or in other way; where this is the case, it is mentioned in the university handbook.

8. In Japan, a person’s capabilities are not forced into an inflexible specialty. Where there is willingness and intelligence, there is a place within the company for you to try and to succeed.

9. Until these issues are resolved, a technology of behavior will continue to be rejected, and with it possibly the only way to solve our problem.  
    （如果）这些问题得不到解决，研究行为的技术手段就会继续受到排斥，解决问题的惟一方式可能也随之继续受到排斥。

10. Until such time as mankind has the sense to lower its population to the point where the planet can provide a comfortable support for all, people will have to accept more “unnatural food.”
 除非人类终于意识到要把人口减少到地球能为所有的人提供足够的饮食的程度，否则人们将不得不接受更多的“人造食品”