题目内容：

听下面一段独白，回答以下小题。

1.Which might be the feeling of those standing while working?

A.Being more sleepy. B.Being concentrated. C.Time going by faster.

2.What is the outcome of the study mentioned in the passage?

A.Standing while working improves working efficiency.

B.Sitting for over 6 hours a day is harmful to health.

C.Sitting comfortably does some good to health.

3.What do some professors suggest?

A.Doing as leaders and colleagues do.

B.Moving around instead of just standing.

C.Finding a natural way to stand while working.