15. 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
E. genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease
1. distinguish 的用法（from, between ） （考點就是distinguish，一級排除A,B,D,E）
（常與from連用）使別于；有…特點
distinguish somebody/something from
a method of distinguishing cancer cells from normal tissue
(用from的時候要小心，分辨兩個的話優(yōu)先用distinguish between and)
distinguish between A and B . A/B 不同范疇進(jìn)行區(qū)分。Between 不能省略,distinguish between A and B .which. which 很清晰指向B.
distinguish A and B .which. which 可能指向 A and Ｂ或者 B ,不清晰
Distinguish A from B A 是 B 的子集，從Ｂ中把A 挑出來。
此題是把假的病癥和真的病癥區(qū)分開, 不是把假的病癥從真的病癥里面區(qū)分出來)
2. 情態(tài)動詞要保持： may 不應(yīng)該改成 perhaps.
3 代詞：mood swings, which may be violent without their being grounded Their 多余
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
E. genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease
1. distinguish 的用法（from, between ） （考點就是distinguish，一級排除A,B,D,E）
（常與from連用）使別于；有…特點
distinguish somebody/something from
a method of distinguishing cancer cells from normal tissue
(用from的時候要小心，分辨兩個的話優(yōu)先用distinguish between and)
distinguish between A and B . A/B 不同范疇進(jìn)行區(qū)分。Between 不能省略,distinguish between A and B .which. which 很清晰指向B.
distinguish A and B .which. which 可能指向 A and Ｂ或者 B ,不清晰
Distinguish A from B A 是 B 的子集，從Ｂ中把A 挑出來。
此題是把假的病癥和真的病癥區(qū)分開, 不是把假的病癥從真的病癥里面區(qū)分出來)
2. 情態(tài)動詞要保持： may 不應(yīng)該改成 perhaps.
3 代詞：mood swings, which may be violent without their being grounded Their 多余