【单选题】A study comparing a group of chronically depressed individuals with an otherwise matched group of individuals free from depression found significantly more disorders of the immune system among the dep...
A.
The researchers' view does little more than echo a familiar theme in folklore and literature.
B.
Chronically depressed individuals are no less careful than others to avoid exposure to infections.
C.
Disorders of the immune system cause many of those individuals who have them to become chronically depressed .
D.
Individuals who have previously been free from depression can become depressed quite suddenly.
E.
A high frequency of infections can stem from an unusually high level of exposure rater than from any disorder of the immune system.
【单选题】Being plugged into an iPod is a feature of adolescence. A new study suggests that teens who spend too much time listening to music may be at higher risk of depression. The study found that teens who r...