The paper presented the concepts and methods of identifying significant environmental impacts and critical control points, the screening of assessment indicators based on significance and technology criteria, and the system of critical assessment indicators for APEIA.

This article is an empirical research on this issue, and the statistical analysis shows that significant interactions exist between L2 self-repairs behavior and L2 proficiency leve

The effects of remarkable affecting genes on the bacteria s action and the production of methane are reviewed,which include that trace element,sulfate,pH,redox potential,and so on.

Behavior and environmental influence of trace elements in cement production;

Connecting with the present situation of the economic evaluation of the environmental influence, this paper analyzes the current economic evaluation system of the environmental influence, and advances some suggestions on perfecting the economic evaluation of the environmental influence of construction project.

This paper analyzes on the subsidence of Nanzhuang Coalmine of Yangquan City and the environmental influence caused by the subsidence,and puts forward some rational and practicable countermeasures for preventing the subsidence.