题目内容：

The patient,( )how serious his illness was,still refused an operation．
A．not realize \x05\x05B．not to realise \x05
C．not realising \x05\x05D．not being realized
选哪一个,为什么?

优质解答

C 句子结构可以唤作如下The patient still refused an operation,not realizing how serious his illness was.首先排除A和D,这句话中不缺乏谓语（refused）,所以不能用A ;意识是个人所拥有的主动形式,没有必要用被动...