This paper selects Class 1 Senior 1 that studied in Kunming Experimental Middle School as the experiment class (50 persons, 26 boys, 24 girls), Class 2 Senior 1 as the compared class (52 persons, 31 boys, 21 girls).

• 本文选取昆明市实验中学的高一1班为实验班(50人，男26人，女24人)，高一2班为对照班(52人，男31人，女21人)。