They surveyed the students, asking them how many fizzy soft drinks with sugar they had a day, and then questions from a standard questionnaire used to assess mental health.

• 他们对这些学生进行了调查,询问他们每天喝多少含糖汽水软饮料,然后问一些用于评估精神健康问题的标准化问卷里的问题。