以武汉生物工程学院2007级随机抽取的两个教学班分别视为实验组和对照组，每组人数为32人。
Wuhan Institute of Biological Engineering in 2007 randomly selected two classes, respectively, as experimental group and control group, the number of each group of 32 people.
以武汉生物工程学院2007级随机抽取的两个教学班分别视为实验组和对照组，每组人数为32人。
Wuhan Institute of Biological Engineering in 2007 randomly selected two classes, respectively, as experimental group and control group, the number of each group of 32 people.
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