The researchers studied hundreds of university students in their f irst and second years of degree courses and at pre-degree " foundation" level and observed what drinks, if any, they brought into exam halls with them.

研究人员针对几百名大学生，对他们大一和大二的学位课课程考试和预科班入门级课程考试进行了研究，并观察他们随身带入考场的饮品。