Improvementofpeople’sabilitytofocusmay______A．affect

Improvement of people’s ability to focus may______.

A．affect their moods

B．distract their minds

C．reduce their boredom

D．increase their depression

正确答案：C
解析：细节理解题由文章第四段“suchthatimproving…decreaseboredom”可知答案选C