此句意为：她1893年获engineering 学位,然后,作为一个professional,专攻（specialized in ）发动机和发电机的设计.B.的错误在于：b.specialize in sth.是固定搭配,不用as.c.获得学位与专攻.是前后关系,不是同时的关系.不能以为变成现在分词就万事大吉了,两个动词是等同地位的,不是伴随关系.而A硬是把 后一个句子看成定语从句是毫无理由的,他与前面哪一个词都够成不了修饰关系.真亏能想出来a这句话.
以下是几个选项的英文
A):the original has an extra 'which'.This 'which' has no reference and is not necessary.
(B):the two actions 'received' and 'specialized' are clearly in sequence and thus the 2nd verb 'specialized' should not be turned into a present participial clause.
(C):'specialized' and 'received' are in sync and both are in past tense.The 'as a professional' is a parenthetical phrase.
(D):'specializes' is present tense,disagreeing with the past tense 'received'
(E):This creates a run-on sentence.
