It is valuable to analyze the students in the treatment class in more details. Because this quasi-experiment is a voluntary activity for the students, twenty-eight students participated in both pre-test and post-test, and can be called full treatment students group, while the other thirty-two participated only in pre-test or in post-test, and can be called partial treatment students group. What is the difference of the learning behavior with the CSIEC system between the two groups of students and their corresponding performance in the vocabulary tests and regular exams?