1.  I have even written some articles to attack somebody and some systems.

2.  Our country has adopted the two-day weekend system since May 1, 1995, so we have two days' holiday in a week.

3.  What make the great changes in developing country are due to the following reasons: 1. For political reasons the people owe independence from the capital system, and make the productivity increase greatly.

4.  We can make society and Marketing investigation, it can let us know that social department's struture and running, and through the information, we can see the system and requirement of society.

5.  I think we should establish some systems to control the using water of industry.

6.  It can help us to control the fresh water shortage, but save is not enough, now scientists are busy searching a good method to produce water, that is to clean the used water for reuse in this system, we won't use up our fresh water .

7.  They invented a machine that make the water clear and were equipped with a cycle system.

8.  Society is a complex system, for good serve , college students must know society as possible.

9.  We should reform the education system and examination method step by step for the students and the society.

10.  Today Great changes have taken place to our Country's economy system, and many factories and Companies face big difficulties .