题目

Brian Walker chews pens. He bites them so hard that his boss has warned him to stop or buy his own. Kate’s weakness is more acceptable-she is unable to walk past a cake shop without overeating Sophin Cartier finds her cigarette habit a headache, while Alice’s thumb-sucking drives her boy friend crazy. Four people with very different habits, but they all share a common problem anxiety disorder or, in serious cases. Obsessive Compulsive Disorder (OCD).From nail-biting to too much hand-washing, overeating and internet addiction（上瘾）,OCD is widespread in almost every workplace and count如图所示，用镊子夹起物体，这是镊子属于（　　）