It is of great significance to a country s far-reaching development and stability for a country to keep a moderate quantity of foreign exchange,the establishment of which includes the method of proportion analysis,the method of regression analysis and the method of cost-benefit analysis.

An Empirical Study of Applying Contrastive Analysis to Vocabulary Instructions in Chinese College English Classes;

Contrastive Analysis (CA) is a method to predict learners’potential difficulties and problems by comparing the mother tongue and the target language.

This article applying 17 prefecture-level cities statistic data of Anhui Province analyzes the development of these 17 prefecture-level cities from city scale、industry cluster、elements cluster and synthetic economic strength etc by the method of comparative analysis and regression analysis.