求助一道题

winonawu

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

根据distinguish 的用法，BDE out.
A 为什么不对呢？

Indigolove

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


A is distinguishes......from......
C is distinguishes between.......and.......
Both are ok, the problem is the "their" in A.
It is much more awkward than C