Douglas Gentile says his research shows that pathological gamers tend to cut back the frequency of playing computer games______.

A．A full 80% of college students play.
B．It is debated whether game addiction can be diagnosed.
C．Many students tend to lie about the time they play.
D．Some students don- t think it disruptive.

A．They will shake grogginess.
B．They will be more liable to sleep.
C．They are made fuzzy-headed the next morning.
D．They feel exhausted and go to bed.