It s very common for college students to take part in social practice by getting a temporary job during school vacation for which is greatly concerned.

The present situation of the middle-school students participation in sports tour during their holidays was investigated and analyzed by questionnaires, interviews, mathematical statistics and literature consultation.

Taking Wuhan city as an example this paper makes investigations on contents,time,participating forms, purpose, consumer conditions and affecting factors of sports activities which are taken part in by middle school students and pupils during their winter and summer holidays among eight different districts.

Heated debates have been carried out mainly about whether there should be the Golden Week Holiday, how long the Holiday should be, and how to reach a reasonable distribution among the Golden Week Holiday and other holidays.

The generating function and expection of the busying period, whole vacation period and on-line period are calculated.

The whole vacation period, idle period and on - line period of system are analysed, and their generating.

And the whole vacation period, idle period and on-line period of the system are presented.

Basing on the short-term change of long-term rates and the long-term change of short-term rates,a framework for the test of the expectations hypothesis of the term structure of interest rates in China is put forward and empirically studied.

Using the weekly data on the SSE(Shanghai Stock Exchange) bond market from 2001-09-01 to 2005-02-28,the expectations hypothesis of the term structure was tested and analyzed with the modern financial econometric methods of regressive analysis,unit root test and vector autoregressive.

With weekly data of repo term structures in the Shanghai Stock Exchange from January 4 1999 to November 8 2004,it is found that term structure of repo rates has obvious risk premium,and pure expectations hypothesis can t explain the term structure behavior.