A study,by means of quantitative analysis,on the speech act of refusals in Chinese shows that between men and women there are differences in using refusal strategy.

To date, some linguists have conducted their research on refusal strategy,e.

SPSS is used to analyze and describe the number, frequency and sequential order of refusal strategies of respondents in different power relations and different situations with qualitative case analysis of typical examples to reveal the refusal strategy patterns of Chinese college students in different situations and their relationship with different power relations.

This paper reports a contrastive study on refusal strategies employed by American English speakers and Mainland Chinese speakers.

The reason for using those refusal strategies is that the speech act of refusal represents an inherent threat to face.

Due to the differences in languages and cultures, Chinese and Americans people show diversities as well as similarities in refusal strategies even in the same situation.

This article introduces the method to generate K distribution random sequence by the accept-refuse method,and lets the random sequence pass through the linear system whose spectrum distribution is designated to generate the K distribution sequence with the designated spectrum distribution.