31.  Second, the development of the medicine service results the increase of life expectancy.

32.  The health service improved.

33.  The developments of production, medical service and the techniques, all had contributed to the former changes.

34.  The development of our national economy and the modernization of our country depends on qualitified products and services.

35.  Another way is to take part in the services.

36.  Society service is an example of one way.

37.  Secondly, college students have many opportunities to take part in kinds of community service advocated by the League Committee or other authorities.

38.  So it is important for them to getting to know the world outside the campus.As a knowledge man, we can use the things that we have learned to do something, we can find a job through media and construction of service , during the studying times, we must read newspapers and watch TV, or we can find a job in the company, or teach some primary and middle school students, all by all the ways are many, but we must have a courage to do .

39.  On the other hand, you can also do that through the societ service.

40.  So, I want to do some society service on this summer holiday.