After a few weeks’ experience, apprentice jewelers can usually begin to discriminate, though not with absolute certainty, genuine diamonds from imitation diamonds.
(A) genuine diamonds from imitation diamonds
(B) genuine diamonds apart from imitations
(C) between genuine diamonds and imitation diamonds
(D) among genuine diamonds and imitation diamonds
(E) whether diamonds are imitation or genuine
字典里discriminate A from B，或者discriminate between A and B两个用法都有。这道题A为什么不对啊？
难道ETS不承认前者吗？
搜索过以前的帖子，有人问过，但是好像都没有回答过。请NN们答疑解惑！
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