【单选题】

So what is depressionDepression is often more about anger turned (1) than it is about sadness.But it’s usually (2) as sadness.Depression can (3) at all ages, from childhood to old age, and it’s the United States’ No. 1 (4) problem.

When someone is depressed, her behavior (5) change and she loses interest in activities she (6) enjoyed (like sports, music, friendships). The sadness usually lasts every day for most of the day and for two weeks or more.
What (7) depressionA (8) event can certainly bring (9) depression, but some will say it happens (10) a specific cause. So how do you know if you’re just having a bad day (11) are really depressedDepression affects your (12) , moods, behavior and even your physical health. These changes often go (13) or are labeled (14) simply a bad case of the blues.
Someone who’s truly (15) depression will have (16) periods of crying spells, feelings of (17) (like not being able to change your situation) and (18) (like you’ ll feel this way forever), irritation or agitation.A、depressed person often (19) from others.Depression seldom goes away by itself, and the greatest (20) of depression is suicide. The risk of suicide increases if the depression isn’t treateD、
A．patterns
B．links
C．intuition
D．conscientiousness