四级Participants were balanced across the three groups for age, sex, educational background, severity and duration of depression, and use of antidepressant.
参与者在年龄、性别、教育背景、抑郁的严重程度和持续时间以及抗抑郁药的使用方面在三组之间保持平衡。
2019年6月四级真题(第三套)阅读 Section C
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