题目选项分析

In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease.

In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes between mood swings, which may be violent without being grounded in mental disease, and genuine manic-depressive psychosis.