69.According to the passage, a person suffering from OCD .
(A)reduces his/her anxiety by taking drugs 　
(B)gets into unwanted hagbits to relieve stress 　
(C)has unwanted thoughts about habits 　
(D)has unwanted thoughts because of illness

细节推断题。根据文中第二段第三句话以及第四句话综合推断，可确定B选项正确。