1. In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis.
(A) mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis
(B) mood swings, perhaps violent without being grounded in mental disease, and genuine manic-depressive psychosis
(C) between mood swings, which may be violent without being grounded in mental disease, and genuine manic-depressive psychosis
(D) between mood swings, perhaps violent without being grounded in mental disease, from genuine manic-depressive psychosis（C）
(E) genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease
distinguish A from B 和distinguish between A and B 有什么区别阿。字典上说前者是极物动词，后者是不及物动词，那么答案应该是a怎么是c 呢
distinguish A from B：从B当中区分出A，
distinguish between A and B：区别A和B
在这个句子里如果是前一种用法的话，句意不通：从真实的抑郁狂躁的精神中中区别出情绪的（起伏）摆动；
第二句的解释就通顺了：区别了【真实的抑郁狂躁的精神】和【情绪的（起伏）摆动】
MM最好把题目的出处标明以惠及后人。具体发贴规则请参照
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