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tudents asked questions to assistant because of misty printing, then assistant explain to them. Three teachers from this school marked papers and later they checked scores’ veracity.
 
4.4.4.2 Questionnaire
 
There were 67 questionnaires handed out to students in each groups, and 63 questionnaires were handed in to assistant. Four questionnaires were invalidated because there were no names or some questions were not answered according to standard. There were 20 questions on questionnaire and students were required to finish them in 15 minutes. There were not significant problems occurred in process of questionnaire test.

 
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