Considering the principle of conjunction and graduation, the suitable arrangement of curriculum and teaching schedule benefits our teaching activities in databa.

A new progressive level of detail method;

Interactive Progressive Operator-based IBM System;

Analysis to the Characteristics of Political Participation and its Causes in the Progressive Reform in China;

Gradual reform focuses on characteristics of gradualism,evolutionary and piecemeal,which coincide with the theoretical logic of revolutionary economics,transition economics and market process theory.

Analysis of the meaning of English modals by case study shows that the main factors for indeterminacy of the meanings of the English modals are gradience and merger.

At the same time, by analyzing the meaning gradience of modals and the gradience of meaningful componential parts, he further sets forth the meaning of modals, which enables us to have a better understanding of them.