123. (31031-!-item-!-188;#058&005972)
Vivien Thomas, who had no formal medical training, in struggling against overwhelming odds, he
became a cardiac surgeon and eventually to receive an honorary doctorate from Johns Hopkins
(A) who had no formal medical training, in struggling against overwhelming odds, he became
(B) having had no formal medical training, in struggling against overwhelming odds to become
(C) who, having no formal medical training, he struggled against overwhelming odds in becoming
(D) who, having had no formal medical training and struggled against overwhelming odds, became
(E) who had no formal medical training, struggled against overwhelming odds to become
答案是E
请问D为什么不对？became为什么不能看成主句的谓语？who用逗号隔开和不隔开有什么区别？请指教，谢谢~ | 
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发表于 2011-8-9 21:48:33
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