The authors make a tracking investigation of the controllable factors of some of the students in Grade 98 in their foreign language learning and discuss the interacting relationship between the factors, which lays a foundation for the college English education in our college.

Through video document,literature,expert interview and mathematical statistics,an investigation and research are given to the controllable factors of result in events ranked by points,and an analysis are taken to the results of Chinese team in World Cup in 2006 and 2007.

The integrative effect of 13 controllable factors of rice fields on diseases and insect pests, natural enemies and rice yield, and technology of mixture of insecticides and fungicides to control main diseases and insect pests of rice at three periods were studied from 1994 to 1996.

The integrative effect of 16 controllable factors of soybean fields on diseases and insect pests, natural enemies and soybean yield was studied from 1993 to 1996.

Under the guidance of system control, the integrative effect of 11 controllable factors of soybean yield on threespotted plusia ( Argyrogramma agnata Staudinger ), natural enemies and summer soybean yield was studied from 1993 to 1996.

Learners internal factors, especially controllable factors, such as: motivation, individual effort, learning style, learning strategies, emotional factors, etc.

Discussion on the claims caused by noncontrollable factors in engineering construction;

Controllable and Uncontrollable Factors in Management of Adult Education;