But the article only uses the questionnaire survey this kind of form to carry on the investigation, then analyzes. And I think this way is very simple, very objective. When doing the questionnaire, students will not be taken seriously because of some of the ideas, perhaps a part of the questionnaire can not reflect the actual situation of the students. Teachers should also do a questionnaire or interview with the teacher, the teacher has a knowledge of their students, the motivation for their study will be very clear. This increase in the form of investigation will make the results more accurate and effective.
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